/// <summary>
/// Fill to buffer base rows data information using non-zero rule
/// </summary>
/// <param name="paint">linear gradient object</param>
/// <param name="rows">row data information</param>
/// <param name="startRowIndex">start row index in row array need to draw</param>
/// <param name="endRowIndex">end row index in end row array need to draw</param>
/// <param name="gammaLutRed">gamma look up table for red</param>
/// <param name="gammaLutGreen">gamma look up table for green</param>
/// <param name="gammaLutBlue">gamma look up table for blue</param>
void OnFillingTransformedVerticalNonZero(LinearGradient paint, uint opacity, RowData[] rows, int startRowIndex, int endRowIndex, byte[] gammaLutRed, byte[] gammaLutGreen, byte[] gammaLutBlue)
{
// now not need to check null or not
uint[] builtColors = paint.GetLinearColors(opacity);
#region private variable for filling
int currentCoverage, scLastCoverage, scLastX = 0;
int tempCover = 0;
int currentArea = 0;
int lastXPosition = 0;
int startXPosition = 0;
byte calculatedCoverage = 0;
int currentColorIndexScaled = 0;
CellData currentCellData = null;
uint colorData = 0;
uint dst, dstRB, dstG;
//uint colorG = 0;
//uint colorRB = 0;
// each row color index will increase value
double startRowIncrement = 0;
#endregion
#region varialbe for vertical
double startY = paint.StartY;
double endY = paint.EndY;
double distance = endY - startY;
#endregion
#region variable for transform
#region transform line 1,1 => 101,1
double currentYTransformed = 1 * InvertedMatrixShy + 1 * InvertedMatrixSy + InvertedMatrixTy;
double destYToTransformed = 101 * InvertedMatrixShy + 1 * InvertedMatrixSy + InvertedMatrixTy;
#endregion
// in vertical we need increment by x after steps
double transformedRatio = (destYToTransformed - currentYTransformed) / 100;
// when transformed horizonline increase 1, x will increase by increment.
int incrementTranformedColorIndexScaled =
(int)((transformedRatio / distance) * ColorIndexIncludeIncrementScale);
#endregion
#region prepare value for rows
//transform first cell of row
currentYTransformed =
startRowIndex * InvertedMatrixSy + InvertedMatrixTy;
currentYTransformed = ((currentYTransformed - startY) / distance);
//calculate row increment
startRowIncrement = ((InvertedMatrixSy / distance));
#endregion
#region FILLING
if (paint.Ramp.NoBlendingColor)
{// no blending color
if (paint.Style != GradientStyle.Pad)
{
#region optimized for reflect and repeat mode
incrementTranformedColorIndexScaled &= ColorIndexIncludeIncrementDoubleMask;
if (incrementTranformedColorIndexScaled < 0)
{
incrementTranformedColorIndexScaled = ColorIndexIncludeIncrementDoubleScale - incrementTranformedColorIndexScaled;
}
#endregion
// when no need to blending, when draw a horizontal line
// do not need check the back color, alway setup
#region filling without blend for horizontal lines
startRowIndex--;
while (++startRowIndex <= endRowIndex)
{
currentCoverage = scLastCoverage = scLastX = 0;
if (rows[startRowIndex] != null)
{
#region transform for row
currentColorIndexScaled = (int)
(currentYTransformed * ColorIndexIncludeIncrementScale);
if (currentColorIndexScaled < 0)
{
currentColorIndexScaled += ColorIndexIncludeIncrementDoubleScale;
}
currentYTransformed += startRowIncrement;
#endregion
// get first cell in current row
currentCellData = rows[startRowIndex].First;
if (currentCellData != null)
{
#region fill current row
do
{
currentArea = currentCellData.Area;
#region blend horizontal line
if ((currentCellData.X > scLastX + 1))
{
if (scLastCoverage != 0)
{
// fast bit absolute
scLastCoverage = (scLastCoverage ^ (scLastCoverage >> 31)) - (scLastCoverage >> 31);
#region non-zero checking code
if (scLastCoverage > 255) scLastCoverage = 255;
#endregion
#region BLEND HORIZONTAL LINE
// calculate start and end position
startXPosition = BufferStartOffset + startRowIndex * BufferStride + scLastX + 1;
lastXPosition = BufferStartOffset + startRowIndex * BufferStride + currentCellData.X;
// get current color index value
if (scLastCoverage >= 254)
{
while (startXPosition < lastXPosition)
{
//BufferData[startXPosition++] = colorData;
//BufferData[startXPosition++] = builtColors[(currentColorIndexScaled >> IncrementColorIndexShift) ];
BufferData[startXPosition++] = builtColors[(currentColorIndexScaled & ColorIndexIncludeIncrementDoubleMask) >> IncrementColorIndexShift];
// incre color index
currentColorIndexScaled += incrementTranformedColorIndexScaled;
//currentColorIndexScaled &= ColorIndexIncludeIncrementDoubleMask;
}
}
else
{
while (startXPosition < lastXPosition)
{
colorData = builtColors[(currentColorIndexScaled & ColorIndexIncludeIncrementDoubleMask) >> IncrementColorIndexShift];
// incre color index
currentColorIndexScaled += incrementTranformedColorIndexScaled;
calculatedCoverage = (byte)((colorData >> 24));
calculatedCoverage = (byte)((scLastCoverage * calculatedCoverage) >> 8);
if (calculatedCoverage >= 255)
{
BufferData[startXPosition] = colorData;
}
else
{
//// blend here
//dst = BufferData[startXPosition];
//dstRB = dst & 0x00FF00FF;
//dstG = (dst >> 8) & 0xFF;
//BufferData[startXPosition] =
// (uint)(AlphaCache[(((dst >> 24) & 0xFF) << 8) + calculatedCoverage])
// | (uint)((((((((colorData & 0xFF00) >> 8) - dstG) * calculatedCoverage) >> 8) + dstG) << 8) & 0x0000FF00)
// | (uint)((((((colorData & 0x00FF00FF) - dstRB) * calculatedCoverage) >> 8) + dstRB) & 0x00FF00FF);
#region gamma apply
dst = BufferData[startXPosition];
dstG = (dst >> 8) & 0xFF;
dstRB = (((((colorData & 0x00FF00FF) - (dst & 0x00FF00FF)) * calculatedCoverage) >> 8) + (dst & 0x00FF00FF));
BufferData[startXPosition] =
(uint)((AlphaCache[(((dst >> 24) & 0xFF) << 8) + calculatedCoverage])
| (((uint)gammaLutGreen[(((((((colorData & 0xFF00) >> 8) - dstG) * calculatedCoverage) >> 8) + dstG) & 0xFF)] << 8))
| ((uint)gammaLutRed[(dstRB & 0x00FF0000) >> 16] << 16)
| (gammaLutBlue[(dstRB & 0x00FF)]));
#endregion
}
startXPosition++;
currentColorIndexScaled++;
}
}
#endregion
}
else
{
// incre color index
currentColorIndexScaled += (currentCellData.X - scLastX - 1) * incrementTranformedColorIndexScaled;
}
}
#endregion
currentCoverage += currentCellData.Coverage;
#region blend the current cell
tempCover = ((currentCoverage << 9) - currentArea) >> 9;
if (tempCover != 0)
{
// fast bit absolute
tempCover = (tempCover ^ (tempCover >> 31)) - (tempCover >> 31);
#region non-zero checking code
if (tempCover > 255) tempCover = 255;
#endregion
colorData = builtColors[(currentColorIndexScaled & ColorIndexIncludeIncrementDoubleMask) >> IncrementColorIndexShift];
calculatedCoverage = (byte)(colorData >> 24);
#region blend pixel
tempCover = (int)((tempCover * calculatedCoverage) >> 8);
//if (tempCover > 255) tempCover = 255;
calculatedCoverage = (byte)tempCover;
startXPosition = BufferStartOffset + startRowIndex * BufferStride + currentCellData.X;
#region blend here
//dst = BufferData[startXPosition];
//dstRB = dst & 0x00FF00FF;
//dstG = (dst >> 8) & 0xFF;
//BufferData[startXPosition] =
// (uint)(AlphaCache[(((dst >> 24) & 0xFF) << 8) + calculatedCoverage])
// | (uint)((((((((colorData & 0xFF00) >> 8) - dstG) * calculatedCoverage) >> 8) + dstG) << 8) & 0x0000FF00)
// | (uint)((((((colorData & 0x00FF00FF) - dstRB) * calculatedCoverage) >> 8) + dstRB) & 0x00FF00FF);
#region gamma apply
dst = BufferData[startXPosition];
dstG = (dst >> 8) & 0xFF;
dstRB = (((((colorData & 0x00FF00FF) - (dst & 0x00FF00FF)) * calculatedCoverage) >> 8) + (dst & 0x00FF00FF));
BufferData[startXPosition] =
(uint)((AlphaCache[(((dst >> 24) & 0xFF) << 8) + calculatedCoverage])
| (((uint)gammaLutGreen[(((((((colorData & 0xFF00) >> 8) - dstG) * calculatedCoverage) >> 8) + dstG) & 0xFF)] << 8))
| ((uint)gammaLutRed[(dstRB & 0x00FF0000) >> 16] << 16)
| (gammaLutBlue[(dstRB & 0x00FF)]));
#endregion
#endregion
#endregion
}
#endregion
// incre color index
currentColorIndexScaled += incrementTranformedColorIndexScaled;
scLastCoverage = currentCoverage;
scLastX = currentCellData.X;
// move to next cell
currentCellData = currentCellData.Next;
} while (currentCellData != null);
#endregion
}
}
}
#endregion
}
else
{//GradientStyle.Pad mode
#region GradientStyle.Pad
// when no need to blending, when draw a horizontal line
// do not need check the back color, alway setup
#region filling without blend for horizontal lines
startRowIndex--;
while (++startRowIndex <= endRowIndex)
{
currentCoverage = scLastCoverage = scLastX = 0;
if (rows[startRowIndex] != null)
{
#region transform for row
currentColorIndexScaled = (int)
(currentYTransformed * ColorIndexIncludeIncrementScale);
//if (currentColorIndexScaled < 0)
//{
// currentColorIndexScaled += ColorIndexIncludeIncrementDoubleScale;
//}
currentYTransformed += startRowIncrement;
#endregion
// get first cell in current row
currentCellData = rows[startRowIndex].First;
if (currentCellData != null)
{
#region fill current row
do
{
currentArea = currentCellData.Area;
#region blend horizontal line
if ((currentCellData.X > scLastX + 1))
{
if (scLastCoverage != 0)
{
// fast bit absolute
scLastCoverage = (scLastCoverage ^ (scLastCoverage >> 31)) - (scLastCoverage >> 31);
#region non-zero checking code
if (scLastCoverage > 255) scLastCoverage = 255;
#endregion
#region BLEND HORIZONTAL LINE
// calculate start and end position
startXPosition = BufferStartOffset + startRowIndex * BufferStride + scLastX + 1;
lastXPosition = BufferStartOffset + startRowIndex * BufferStride + currentCellData.X;
// get current color index value
if (scLastCoverage >= 254)
{
while (startXPosition < lastXPosition)
{
//BufferData[startXPosition++] = colorData;
//BufferData[startXPosition++] = builtColors[(currentColorIndexScaled >> IncrementColorIndexShift) ];
BufferData[startXPosition++] = builtColors[
currentColorIndexScaled < 0 ?
0 :
(currentColorIndexScaled > ColorIndexIncludeIncrementScale ?
255 :
currentColorIndexScaled >> IncrementColorIndexShift)];
// incre color index
currentColorIndexScaled += incrementTranformedColorIndexScaled;
//currentColorIndexScaled &= ColorIndexIncludeIncrementDoubleMask;
}
}
else
{
while (startXPosition < lastXPosition)
{
//colorData = builtColors[(currentColorIndexScaled & ColorIndexIncludeIncrementDoubleMask) >> IncrementColorIndexShift];
colorData = builtColors[
currentColorIndexScaled < 0 ?
0 :
(currentColorIndexScaled > ColorIndexIncludeIncrementScale ?
255 :
currentColorIndexScaled >> IncrementColorIndexShift)];
// incre color index
currentColorIndexScaled += incrementTranformedColorIndexScaled;
calculatedCoverage = (byte)((colorData >> 24));
calculatedCoverage = (byte)((scLastCoverage * calculatedCoverage) >> 8);
if (calculatedCoverage >= 255)
{
BufferData[startXPosition] = colorData;
}
else
{
// blend here
//dst = BufferData[startXPosition];
//dstRB = dst & 0x00FF00FF;
//dstG = (dst >> 8) & 0xFF;
//BufferData[startXPosition] =
// (uint)(AlphaCache[(((dst >> 24) & 0xFF) << 8) + calculatedCoverage])
// | (uint)((((((((colorData & 0xFF00) >> 8) - dstG) * calculatedCoverage) >> 8) + dstG) << 8) & 0x0000FF00)
// | (uint)((((((colorData & 0x00FF00FF) - dstRB) * calculatedCoverage) >> 8) + dstRB) & 0x00FF00FF);
#region gamma apply
dst = BufferData[startXPosition];
dstG = (dst >> 8) & 0xFF;
dstRB = (((((colorData & 0x00FF00FF) - (dst & 0x00FF00FF)) * calculatedCoverage) >> 8) + (dst & 0x00FF00FF));
BufferData[startXPosition] =
(uint)((AlphaCache[(((dst >> 24) & 0xFF) << 8) + calculatedCoverage])
| (((uint)gammaLutGreen[(((((((colorData & 0xFF00) >> 8) - dstG) * calculatedCoverage) >> 8) + dstG) & 0xFF)] << 8))
| ((uint)gammaLutRed[(dstRB & 0x00FF0000) >> 16] << 16)
| (gammaLutBlue[(dstRB & 0x00FF)]));
#endregion
}
startXPosition++;
currentColorIndexScaled++;
}
}
#endregion
}
else
{
// incre color index
currentColorIndexScaled += (currentCellData.X - scLastX - 1) * incrementTranformedColorIndexScaled;
}
}
#endregion
currentCoverage += currentCellData.Coverage;
#region blend the current cell
tempCover = ((currentCoverage << 9) - currentArea) >> 9;
if (tempCover != 0)
{
// fast bit absolute
tempCover = (tempCover ^ (tempCover >> 31)) - (tempCover >> 31);
#region non-zero checking code
if (tempCover > 255) tempCover = 255;
#endregion
colorData = builtColors[
currentColorIndexScaled < 0 ?
0 :
(currentColorIndexScaled > ColorIndexIncludeIncrementScale ?
255 :
currentColorIndexScaled >> IncrementColorIndexShift)];
calculatedCoverage = (byte)(colorData >> 24);
#region blend pixel
tempCover = (int)((tempCover * calculatedCoverage) >> 8);
//if (tempCover > 255) tempCover = 255;
calculatedCoverage = (byte)tempCover;
startXPosition = BufferStartOffset + startRowIndex * BufferStride + currentCellData.X;
#region blend here
//dst = BufferData[startXPosition];
//dstRB = dst & 0x00FF00FF;
//dstG = (dst >> 8) & 0xFF;
//BufferData[startXPosition] =
// (uint)(AlphaCache[(((dst >> 24) & 0xFF) << 8) + calculatedCoverage])
// | (uint)((((((((colorData & 0xFF00) >> 8) - dstG) * calculatedCoverage) >> 8) + dstG) << 8) & 0x0000FF00)
// | (uint)((((((colorData & 0x00FF00FF) - dstRB) * calculatedCoverage) >> 8) + dstRB) & 0x00FF00FF);
#region gamma apply
dst = BufferData[startXPosition];
dstG = (dst >> 8) & 0xFF;
dstRB = (((((colorData & 0x00FF00FF) - (dst & 0x00FF00FF)) * calculatedCoverage) >> 8) + (dst & 0x00FF00FF));
BufferData[startXPosition] =
(uint)((AlphaCache[(((dst >> 24) & 0xFF) << 8) + calculatedCoverage])
| (((uint)gammaLutGreen[(((((((colorData & 0xFF00) >> 8) - dstG) * calculatedCoverage) >> 8) + dstG) & 0xFF)] << 8))
| ((uint)gammaLutRed[(dstRB & 0x00FF0000) >> 16] << 16)
| (gammaLutBlue[(dstRB & 0x00FF)]));
#endregion
#endregion
#endregion
}
#endregion
// incre color index
currentColorIndexScaled += incrementTranformedColorIndexScaled;
scLastCoverage = currentCoverage;
scLastX = currentCellData.X;
// move to next cell
currentCellData = currentCellData.Next;
} while (currentCellData != null);
#endregion
}
}
}
#endregion
#endregion
}//GradientStyle.Pad mode
}// no blending color
else
{// has blending color
if (paint.Style != GradientStyle.Pad)
{
#region optimized for reflect and repeat mode
incrementTranformedColorIndexScaled &= ColorIndexIncludeIncrementDoubleMask;
if (incrementTranformedColorIndexScaled < 0)
{
incrementTranformedColorIndexScaled = ColorIndexIncludeIncrementDoubleScale - incrementTranformedColorIndexScaled;
}
#endregion
// when no need to blending, when draw a horizontal line
// do not need check the back color, alway setup
#region filling without blend for horizontal lines
startRowIndex--;
while (++startRowIndex <= endRowIndex)
{
currentCoverage = scLastCoverage = scLastX = 0;
if (rows[startRowIndex] != null)
{
#region transform for row
currentColorIndexScaled = (int)
(currentYTransformed * ColorIndexIncludeIncrementScale);
if (currentColorIndexScaled < 0)
{
currentColorIndexScaled += ColorIndexIncludeIncrementDoubleScale;
}
currentYTransformed += startRowIncrement;
#endregion
// get first cell in current row
currentCellData = rows[startRowIndex].First;
if (currentCellData != null)
{
#region fill current row
do
{
currentArea = currentCellData.Area;
#region blend horizontal line
if ((currentCellData.X > scLastX + 1))
{
if (scLastCoverage != 0)
{
// fast bit absolute
scLastCoverage = (scLastCoverage ^ (scLastCoverage >> 31)) - (scLastCoverage >> 31);
#region non-zero checking code
if (scLastCoverage > 255) scLastCoverage = 255;
#endregion
#region BLEND HORIZONTAL LINE
// calculate start and end position
startXPosition = BufferStartOffset + startRowIndex * BufferStride + scLastX + 1;
lastXPosition = BufferStartOffset + startRowIndex * BufferStride + currentCellData.X;
while (startXPosition < lastXPosition)
{
colorData = builtColors[(currentColorIndexScaled & ColorIndexIncludeIncrementDoubleMask) >> IncrementColorIndexShift];
currentColorIndexScaled += incrementTranformedColorIndexScaled;
calculatedCoverage = (byte)(colorData >> 24);
calculatedCoverage = (byte)((scLastCoverage * calculatedCoverage) >> 8);
if (calculatedCoverage >= 254)
{
BufferData[startXPosition] = colorData;
}
else
{
#region blend here
//dst = BufferData[startXPosition];
//dstRB = dst & 0x00FF00FF;
//dstG = (dst >> 8) & 0xFF;
//BufferData[startXPosition] =
// (uint)(AlphaCache[(((dst >> 24) & 0xFF) << 8) + calculatedCoverage])
// | (uint)((((((((colorData & 0x00FF00) >> 8) - dstG) * calculatedCoverage) >> 8) + dstG) << 8) & 0x0000FF00)
// | (uint)((((((colorData & 0x00FF00FF) - dstRB) * calculatedCoverage) >> 8) + dstRB) & 0x00FF00FF);
#region gamma apply
dst = BufferData[startXPosition];
dstG = (dst >> 8) & 0xFF;
dstRB = (((((colorData & 0x00FF00FF) - (dst & 0x00FF00FF)) * calculatedCoverage) >> 8) + (dst & 0x00FF00FF));
BufferData[startXPosition] =
(uint)((AlphaCache[(((dst >> 24) & 0xFF) << 8) + calculatedCoverage])
| (((uint)gammaLutGreen[(((((((colorData & 0xFF00) >> 8) - dstG) * calculatedCoverage) >> 8) + dstG) & 0xFF)] << 8))
| ((uint)gammaLutRed[(dstRB & 0x00FF0000) >> 16] << 16)
| ((uint)gammaLutBlue[(dstRB & 0x00FF)]));
#endregion
#endregion
}
startXPosition++;
currentColorIndexScaled++;
}
#endregion
}
else
{
// incre color index
currentColorIndexScaled += (currentCellData.X - scLastX - 1) * incrementTranformedColorIndexScaled;
}
}
#endregion
currentCoverage += currentCellData.Coverage;
#region blend the current cell
tempCover = ((currentCoverage << 9) - currentArea) >> 9;
if (tempCover != 0)
{
// fast bit absolute
tempCover = (tempCover ^ (tempCover >> 31)) - (tempCover >> 31);
#region non-zero checking code
if (tempCover > 255) tempCover = 255;
#endregion
colorData = builtColors[(currentColorIndexScaled & ColorIndexIncludeIncrementDoubleMask) >> IncrementColorIndexShift];
calculatedCoverage = (byte)(colorData >> 24);
#region blend pixel
tempCover = (int)((tempCover * calculatedCoverage) >> 8);
//if (tempCover > 255) tempCover = 255;
calculatedCoverage = (byte)tempCover;
startXPosition = BufferStartOffset + startRowIndex * BufferStride + currentCellData.X;
#region blend here
//dst = BufferData[startXPosition];
//dstRB = dst & 0x00FF00FF;
//dstG = (dst >> 8) & 0xFF;
//BufferData[startXPosition] =
// (uint)(AlphaCache[(((dst >> 24) & 0xFF) << 8) + calculatedCoverage])
// | (uint)((((((((colorData & 0xFF00) >> 8) - dstG) * calculatedCoverage) >> 8) + dstG) << 8) & 0x0000FF00)
// | (uint)((((((colorData & 0x00FF00FF) - dstRB) * calculatedCoverage) >> 8) + dstRB) & 0x00FF00FF);
#region gamma apply
dst = BufferData[startXPosition];
dstG = (dst >> 8) & 0xFF;
dstRB = (((((colorData & 0x00FF00FF) - (dst & 0x00FF00FF)) * calculatedCoverage) >> 8) + (dst & 0x00FF00FF));
BufferData[startXPosition] =
(uint)((AlphaCache[(((dst >> 24) & 0xFF) << 8) + calculatedCoverage])
| (((uint)gammaLutGreen[(((((((colorData & 0xFF00) >> 8) - dstG) * calculatedCoverage) >> 8) + dstG) & 0xFF)] << 8))
| ((uint)gammaLutRed[(dstRB & 0x00FF0000) >> 16] << 16)
| (gammaLutBlue[(dstRB & 0x00FF)]));
#endregion
#endregion
#endregion
}
#endregion
// incre color index
currentColorIndexScaled += incrementTranformedColorIndexScaled;
scLastCoverage = currentCoverage;
scLastX = currentCellData.X;
// move to next cell
currentCellData = currentCellData.Next;
} while (currentCellData != null);
#endregion
}
}
}
#endregion
}
else
{
#region GradientStyle.Pad
// when no need to blending, when draw a horizontal line
// do not need check the back color, alway setup
#region filling without blend for horizontal lines
startRowIndex--;
while (++startRowIndex <= endRowIndex)
{
currentCoverage = scLastCoverage = scLastX = 0;
if (rows[startRowIndex] != null)
{
#region transform for row
currentColorIndexScaled = (int)
(currentYTransformed * ColorIndexIncludeIncrementScale);
//if (currentColorIndexScaled < 0)
//{
// currentColorIndexScaled += ColorIndexIncludeIncrementDoubleScale;
//}
currentYTransformed += startRowIncrement;
#endregion
// get first cell in current row
currentCellData = rows[startRowIndex].First;
if (currentCellData != null)
{
#region fill current row
do
{
currentArea = currentCellData.Area;
#region blend horizontal line
if ((currentCellData.X > scLastX + 1))
{
if (scLastCoverage != 0)
{
// fast bit absolute
scLastCoverage = (scLastCoverage ^ (scLastCoverage >> 31)) - (scLastCoverage >> 31);
#region non-zero checking code
if (scLastCoverage > 255) scLastCoverage = 255;
#endregion
#region BLEND HORIZONTAL LINE
// calculate start and end position
startXPosition = BufferStartOffset + startRowIndex * BufferStride + scLastX + 1;
lastXPosition = BufferStartOffset + startRowIndex * BufferStride + currentCellData.X;
while (startXPosition < lastXPosition)
{
//colorData = builtColors[(currentColorIndexScaled & ColorIndexIncludeIncrementDoubleMask) >> IncrementColorIndexShift];
colorData = builtColors[
currentColorIndexScaled < 0 ?
0 :
(currentColorIndexScaled > ColorIndexIncludeIncrementScale ?
255 :
currentColorIndexScaled >> IncrementColorIndexShift)];
currentColorIndexScaled += incrementTranformedColorIndexScaled;
calculatedCoverage = (byte)(colorData >> 24);
calculatedCoverage = (byte)((scLastCoverage * calculatedCoverage) >> 8);
if (calculatedCoverage >= 254)
{
BufferData[startXPosition] = colorData;
}
else
{
#region blend here
//dst = BufferData[startXPosition];
//dstRB = dst & 0x00FF00FF;
//dstG = (dst >> 8) & 0xFF;
//BufferData[startXPosition] =
// (uint)(AlphaCache[(((dst >> 24) & 0xFF) << 8) + calculatedCoverage])
// | (uint)((((((((colorData & 0x00FF00) >> 8) - dstG) * calculatedCoverage) >> 8) + dstG) << 8) & 0x0000FF00)
// | (uint)((((((colorData & 0x00FF00FF) - dstRB) * calculatedCoverage) >> 8) + dstRB) & 0x00FF00FF);
#region gamma apply
dst = BufferData[startXPosition];
dstG = (dst >> 8) & 0xFF;
dstRB = (((((colorData & 0x00FF00FF) - (dst & 0x00FF00FF)) * calculatedCoverage) >> 8) + (dst & 0x00FF00FF));
BufferData[startXPosition] =
(uint)((AlphaCache[(((dst >> 24) & 0xFF) << 8) + calculatedCoverage])
| (((uint)gammaLutGreen[(((((((colorData & 0xFF00) >> 8) - dstG) * calculatedCoverage) >> 8) + dstG) & 0xFF)] << 8))
| ((uint)gammaLutRed[(dstRB & 0x00FF0000) >> 16] << 16)
| ((uint)gammaLutBlue[(dstRB & 0x00FF)]));
#endregion
#endregion
}
startXPosition++;
currentColorIndexScaled++;
}
#endregion
}
else
{
// incre color index
currentColorIndexScaled += (currentCellData.X - scLastX - 1) * incrementTranformedColorIndexScaled;
}
}
#endregion
currentCoverage += currentCellData.Coverage;
#region blend the current cell
tempCover = ((currentCoverage << 9) - currentArea) >> 9;
if (tempCover != 0)
{
// fast bit absolute
tempCover = (tempCover ^ (tempCover >> 31)) - (tempCover >> 31);
#region non-zero checking code
if (tempCover > 255) tempCover = 255;
#endregion
colorData = builtColors[
currentColorIndexScaled < 0 ?
0 :
(currentColorIndexScaled > ColorIndexIncludeIncrementScale ?
255 :
currentColorIndexScaled >> IncrementColorIndexShift)];
calculatedCoverage = (byte)(colorData >> 24);
#region blend pixel
tempCover = (int)((tempCover * calculatedCoverage) >> 8);
//if (tempCover > 255) tempCover = 255;
calculatedCoverage = (byte)tempCover;
startXPosition = BufferStartOffset + startRowIndex * BufferStride + currentCellData.X;
#region blend here
//dst = BufferData[startXPosition];
//dstRB = dst & 0x00FF00FF;
//dstG = (dst >> 8) & 0xFF;
//BufferData[startXPosition] =
// (uint)(AlphaCache[(((dst >> 24) & 0xFF) << 8) + calculatedCoverage])
// | (uint)((((((((colorData & 0xFF00) >> 8) - dstG) * calculatedCoverage) >> 8) + dstG) << 8) & 0x0000FF00)
// | (uint)((((((colorData & 0x00FF00FF) - dstRB) * calculatedCoverage) >> 8) + dstRB) & 0x00FF00FF);
#region gamma apply
dst = BufferData[startXPosition];
dstG = (dst >> 8) & 0xFF;
dstRB = (((((colorData & 0x00FF00FF) - (dst & 0x00FF00FF)) * calculatedCoverage) >> 8) + (dst & 0x00FF00FF));
BufferData[startXPosition] =
(uint)((AlphaCache[(((dst >> 24) & 0xFF) << 8) + calculatedCoverage])
| ((uint)(gammaLutGreen[(((((((colorData & 0xFF00) >> 8) - dstG) * calculatedCoverage) >> 8) + dstG) & 0xFF)] << 8))
| ((uint)gammaLutRed[(dstRB & 0x00FF0000) >> 16] << 16)
| ((uint)gammaLutBlue[(dstRB & 0x00FF)]));
#endregion
#endregion
#endregion
}
#endregion
// incre color index
currentColorIndexScaled += incrementTranformedColorIndexScaled;
scLastCoverage = currentCoverage;
scLastX = currentCellData.X;
// move to next cell
currentCellData = currentCellData.Next;
} while (currentCellData != null);
#endregion
}
}
}
#endregion
#endregion
}
}//has blending color
#endregion
}
/// <summary>
/// Fill to buffer base rows data information using non-zero rule
/// </summary>
/// <param name="paint">linear gradient object</param>
/// <param name="rows">row data information</param>
/// <param name="startRowIndex">start row index in row array need to draw</param>
/// <param name="endRowIndex">end row index in end row array need to draw</param>
void OnFillingHorizontalNonZero(
LinearGradient paint,
uint opacity,
RowData[] rows,
int startRowIndex,
int endRowIndex)
{
// now not need to check null or not
uint[] builtColors = paint.GetLinearColors(opacity);
/* Base on startX, endX, we need build fixedColor array
* contain width-count elements. So that, at a column,
* we can lookup color for that column. */
#region Build fixed color
double startX = paint.StartX;
double endX = paint.EndX;
// width of this
int width = CurrentEndXIndex - CurrentStartXIndex + 1;
uint[] fixedColor = new uint[width];
int distanceScaled = (int)(Math.Abs(startX - endX) * DistanceScale);
if (distanceScaled == 0)
{
FillingException.Publish(typeof(LinearGradient), "Start point and end point are too close");
return;
}
#region build fixed-color array
if (paint.Style == GradientStyle.Pad)
{
#region GradientStyle.Pad
int startXScaled = (int)(startX * DistanceScale);
int startFixedIndex = (((
(((width + CurrentStartXIndex) << DistanceShift) - startXScaled)
<< ColorIndexShift) / distanceScaled)) << IncrementColorIndexShift;
int colorIncrement = (DistanceScale * ColorIndexIncludeIncrementScale) / distanceScaled;
if (endX < startX)
{
colorIncrement = -colorIncrement;
startFixedIndex = -startFixedIndex;
}
while (width-- > 0)
{
fixedColor[width] = builtColors[
startFixedIndex < 0 ?
0 :
(startFixedIndex > ColorIndexIncludeIncrementScale ?
255 :
(startFixedIndex >> IncrementColorIndexShift))];
startFixedIndex -= colorIncrement;
}
#endregion
}
else
{
#region GradientStyle.Repeat || GradientStyle.Reflect
int startXScaled = (int)(startX * DistanceScale);
int startFixedIndex = (((
(((width + CurrentStartXIndex) << DistanceShift) - startXScaled)
<< ColorIndexShift) / distanceScaled)) << IncrementColorIndexShift;
int colorIncrement = (DistanceScale * ColorIndexIncludeIncrementScale) / distanceScaled;
if (endX < startX)
{
colorIncrement = -colorIncrement;
}
startFixedIndex &= ColorIndexIncludeIncrementDoubleMask;
while (width-- > 0)
{
fixedColor[width] = builtColors[
startFixedIndex < 0 ?
(startFixedIndex >> IncrementColorIndexShift) + 512 :
(startFixedIndex >> IncrementColorIndexShift)];
startFixedIndex -= colorIncrement;
startFixedIndex &= ColorIndexIncludeIncrementDoubleMask;
}
#endregion
}
#endregion
#endregion
#region private variable for filling
int currentCoverage, scLastCoverage, scLastX = 0;
int tempCover = 0;
int currentArea = 0;
int lastXPosition = 0;
int startXPosition = 0;
byte calculatedCoverage = 0;
int currentColorIndexValue = 0;
CellData currentCellData = null;
uint colorData = 0;
uint dst, dstRB, dstG;
#endregion
#region FILLING
if (paint.Ramp.NoBlendingColor)
{
#region filling without blend for horizontal lines
// when no need to blending, when draw a horizontal line
// do not need check the back color, alway setup
startRowIndex--;
while (++startRowIndex <= endRowIndex)
{
currentCoverage = scLastCoverage = scLastX = 0;
if (rows[startRowIndex] != null)
{
// get first cell in current row
currentCellData = rows[startRowIndex].First;
if (currentCellData != null)
{
#region fill current row
do
{
currentArea = currentCellData.Area;
#region blend horizontal line
if ((currentCellData.X > scLastX + 1) && (scLastCoverage != 0))
{
// fast bit absolute
scLastCoverage = (scLastCoverage ^ (scLastCoverage >> 31)) - (scLastCoverage >> 31);
#region non-zero checking code
if (scLastCoverage > 255) scLastCoverage = 255;
#endregion
if (scLastCoverage != 0)
{
#region BLEND HORIZONTAL LINE
// calculate start and end position
startXPosition = BufferStartOffset + startRowIndex * BufferStride + scLastX + 1;
lastXPosition = BufferStartOffset + startRowIndex * BufferStride + currentCellData.X;
// get current color index value
currentColorIndexValue = scLastX + 1 - CurrentStartXIndex;
if (scLastCoverage >= 255)
{
while (startXPosition < lastXPosition)
{
BufferData[startXPosition++] = fixedColor[currentColorIndexValue++];
}
}
else
{
while (startXPosition < lastXPosition)
{
colorData = fixedColor[currentColorIndexValue];
calculatedCoverage = (byte)((colorData >> 24));
calculatedCoverage = (byte)((scLastCoverage * calculatedCoverage) >> 8);
if (calculatedCoverage >= 255)
{
BufferData[startXPosition] = colorData;
}
else
{
#region blend here
dst = BufferData[startXPosition];
dstRB = dst & 0x00FF00FF;
dstG = (dst >> 8) & 0xFF;
BufferData[startXPosition] =
(uint)(AlphaCache[(((dst >> 24) & 0xFF) << 8) + calculatedCoverage])
| (uint)((((((((colorData & 0x00FF00) >> 8) - dstG) * calculatedCoverage) >> 8) + dstG) << 8) & 0x0000FF00)
| (uint)(((((((colorData & 0x00FF00FF)) - dstRB) * calculatedCoverage) >> 8) + dstRB) & 0x00FF00FF);
#endregion
}
startXPosition++;
currentColorIndexValue++;
}
}
#endregion
}
}
#endregion
currentCoverage += currentCellData.Coverage;
#region blend the current cell
// fast absolute
tempCover = ((currentCoverage << 9) - currentArea) >> 9;
if (tempCover != 0)
{
// fast bit absolute
tempCover = (tempCover ^ (tempCover >> 31)) - (tempCover >> 31);
#region non-zero checking code
if (tempCover > 255) tempCover = 255;
#endregion
// get current color data
colorData = fixedColor[currentCellData.X - CurrentStartXIndex];
calculatedCoverage = (byte)(colorData >> 24);
#region blend pixel
tempCover = (int)((tempCover * calculatedCoverage) >> 8);
//if (tempCover > 255) tempCover = 255;
calculatedCoverage = (byte)tempCover;
startXPosition = BufferStartOffset + startRowIndex * BufferStride + currentCellData.X;
#region blend here
dst = BufferData[startXPosition];
dstRB = dst & 0x00FF00FF;
dstG = (dst >> 8) & 0xFF;
BufferData[startXPosition] =
(uint)(AlphaCache[(((dst >> 24) & 0xFF) << 8) + calculatedCoverage])
| (uint)((((((((colorData & 0x00FF00) >> 8) - dstG) * calculatedCoverage) >> 8) + dstG) << 8) & 0x0000FF00)
| (uint)(((((((colorData & 0x00FF00FF)) - dstRB) * calculatedCoverage) >> 8) + dstRB) & 0x00FF00FF);
#endregion
#endregion
}
#endregion
scLastCoverage = currentCoverage;
scLastX = currentCellData.X;
// move to next cell
currentCellData = currentCellData.Next;
} while (currentCellData != null);
#endregion
}
}
}
#endregion
}//paint.Ramp.NoBlendingColor
else
{//has blending color
#region perform normal filling
startRowIndex--;
while (++startRowIndex <= endRowIndex)
{
currentCoverage = scLastCoverage = scLastX = 0;
if (rows[startRowIndex] != null)
{
// get first cell in current row
currentCellData = rows[startRowIndex].First;
if (currentCellData != null)
{
#region fill current row
do
{
currentArea = currentCellData.Area;
#region blend horizontal line
if ((currentCellData.X > scLastX + 1) && (scLastCoverage != 0))
{
// fast bit absolute
scLastCoverage = (scLastCoverage ^ (scLastCoverage >> 31)) - (scLastCoverage >> 31);
#region non-zero checking code
if (scLastCoverage > 255) scLastCoverage = 255;
#endregion
if (scLastCoverage != 0)
{
#region BLEND HORIZONTAL LINE
// calculate start and end position
startXPosition = BufferStartOffset + startRowIndex * BufferStride + scLastX + 1;
lastXPosition = BufferStartOffset + startRowIndex * BufferStride + currentCellData.X;
// get current color index value
currentColorIndexValue = scLastX + 1 - CurrentStartXIndex;
while (startXPosition < lastXPosition)
{
colorData = fixedColor[currentColorIndexValue];
calculatedCoverage = (byte)(colorData >> 24);
calculatedCoverage = (byte)((scLastCoverage * calculatedCoverage) >> 8);
if (calculatedCoverage >= 255)
{
BufferData[startXPosition] = colorData;
}
else
{
#region blend here
dst = BufferData[startXPosition];
dstRB = dst & 0x00FF00FF;
dstG = (dst >> 8) & 0xFF;
BufferData[startXPosition] =
(uint)(AlphaCache[(((dst >> 24) & 0xFF) << 8) + calculatedCoverage])
| (uint)((((((((colorData & 0x00FF00) >> 8) - dstG) * calculatedCoverage) >> 8) + dstG) << 8) & 0x0000FF00)
| (uint)(((((((colorData & 0x00FF00FF)) - dstRB) * calculatedCoverage) >> 8) + dstRB) & 0x00FF00FF);
#endregion
}
startXPosition++;
currentColorIndexValue++;
}
#endregion
}
}
#endregion
currentCoverage += currentCellData.Coverage;
#region blend the current cell
// fast absolute
tempCover = ((currentCoverage << 9) - currentArea) >> 9;
if (tempCover != 0)
{
// fast bit absolute
tempCover = (tempCover ^ (tempCover >> 31)) - (tempCover >> 31);
#region non-zero checking code
if (tempCover > 255) tempCover = 255;
#endregion
// get current color data
colorData = fixedColor[currentCellData.X - CurrentStartXIndex];
calculatedCoverage = (byte)(colorData >> 24);
#region blend pixel
tempCover = (int)((tempCover * calculatedCoverage) >> 8);
//if (tempCover > 255) tempCover = 255;
calculatedCoverage = (byte)tempCover;
startXPosition = BufferStartOffset + startRowIndex * BufferStride + currentCellData.X;
#region blend here
dst = BufferData[startXPosition];
dstRB = dst & 0x00FF00FF;
dstG = (dst >> 8) & 0xFF;
BufferData[startXPosition] =
(uint)(AlphaCache[(((dst >> 24) & 0xFF) << 8) + calculatedCoverage])
| (uint)((((((((colorData & 0x00FF00) >> 8) - dstG) * calculatedCoverage) >> 8) + dstG) << 8) & 0x0000FF00)
| (uint)(((((((colorData & 0x00FF00FF)) - dstRB) * calculatedCoverage) >> 8) + dstRB) & 0x00FF00FF);
#endregion
#endregion
}
#endregion
scLastCoverage = currentCoverage;
scLastX = currentCellData.X;
// move to next cell
currentCellData = currentCellData.Next;
} while (currentCellData != null);
#endregion
}
}
}
#endregion
}//has blending color
#endregion
}
/// <summary>
/// Fill to buffer base rows data information using non-zero rule
/// </summary>
/// <param name="paint">linear gradient object</param>
/// <param name="rows">row data information</param>
/// <param name="startRowIndex">start row index in row array need to draw</param>
/// <param name="endRowIndex">end row index in end row array need to draw</param>
/// <param name="isForward">is diagonal gradient is forward</param>
void OnFillingDiagonalNonZero(
LinearGradient paint,
uint opacity,
RowData[] rows,
int startRowIndex,
int endRowIndex,
bool isForward)
{
#region Explain for fomula
/*
* CALCULATION NEED FOLLOWING VALUES
* 1/ INCREMENT
* increment, when x from n to n+1 ,
* index of color will increase from
* f(n) to f(n) + increment
*
* this increment value is calculated by
* Linear from A to B
* A C B'
* * * * * * * *
* * * *
* * * *
* * * *
* * B
* AC = w of the rect
* BB' |_ AB
* So AB' = (AB * AB)/AC = d * d / w
* And increment is increment = 256 / AB'
* it mean when x go from A to B'
* color index will increase from 0=>255 ( 256 steps)
*
*
* 2/ DISTANCE
* (x3,y3)
* *
* *
* *
* *
* *
* *
* *
* (x1,y1)*
* *
* *
* *
* (x2,y2)
*
* x3,y3 can be calculated by following fomula
* x3 = x1 - height of paint = x1 - ( y2- y1);
* y3 = y1 + width of paint = y1 + ( x2 - x1);
*
* to determine color at point(x,y) to line (x1,y1)-(x3,y3)
* from this distance we can determine the color at this
* point by lookup to color array
*
* distance = ((x - x3) * (y3-y1)
* - ( y - y3) * (x3 -x1))/(distance from start and end point of paint);
*/
#endregion
#region Pre-process
double x1 = 0;
double y1 = 0;
double x2 = 0;
double y2 = 0;
if (isForward)
{
x1 = paint.StartX;
y1 = paint.StartY;
x2 = paint.EndX;
y2 = paint.EndY;
}
else
{
x1 = paint.EndX;
y1 = paint.StartY;
x2 = paint.StartX;
y2 = paint.EndY;
}
double widthOfPaint = x2 - x1;
double heightOfPaint = y2 - y1;
//note: start and end point is random
// start not always on top-left
// so width of paint and height of paint may be negative
if (widthOfPaint == 0)
{
// this will change to vertical
OnFillingVerticalNonZero(paint, opacity, rows, startRowIndex, endRowIndex);
return;
}
else if (heightOfPaint == 0)
{
// this will change to horizontal
OnFillingHorizontalNonZero(paint, opacity, rows, startRowIndex, endRowIndex);
return;
}
#endregion
#region calculate the increasement
double x3 = x1 - heightOfPaint;
double y3 = y1 + widthOfPaint;
double lengthOfPaint = Math.Sqrt((widthOfPaint * widthOfPaint) + (heightOfPaint * heightOfPaint));
//int distanceOfPaintScaled = (int)(distanceOfPaint * DistanceScale);
double incrementColorIndex = (double)(widthOfPaint * ColorIndexScale) / (lengthOfPaint * lengthOfPaint);
// increment by distance scale
// increment may be greater than 512, but in reflect,repeat mode,
// just modulo it
// get the remain when divide by 512
// incrementColorIndex = incrementColorIndex - (((int)incrementColorIndex / ColorIndexDoubleScale) * ColorIndexDoubleScale);
//incrementX < 512, calculate incrementIndex
// ( that scale by 256 for approxiate calculation )
int scaledIncrementColorIndex = (int)(incrementColorIndex * IncrementColorIndexScale);
#endregion
// now not need to check null or not
uint[] builtColors = paint.GetLinearColors(opacity);
#region private variable for filling
int currentCoverage, scLastCoverage, scLastX = 0;
int tempCover = 0;
int currentArea = 0;
int lastXPosition = 0;
int startXPosition = 0;
byte calculatedCoverage = 0;
// this color index is scaled
int currentColorIndexScaled = 0;
CellData currentCellData = null;
uint colorData = 0;
uint dst, dstRB, dstG;
double firstPointDistance = 0;
#endregion
#region optimization for color index
// the ORIGIN fomula for each row, we need to calculate this
//firstPointDistance = (((x3) * (y3 - y1) - (startRowIndex - y3) * (x3 - x1)) / distanceOfPaint);
//// color index = (distance from point to line => scaled) * 256/ (distance of paint scaled)
//currentColorIndexScaled =
// (int)((firstPointDistance * ColorIndexIncludeIncrementScale / distanceOfPaint));
// currentColorIndexScaled &= ColorIndexIncludeIncrementDoubleMask; // mod ( 512 << 8)
// now we need calculate for first time only and after a row, we need to add and small value
//firstPointDistance is x value when line cut the horizontal at position startRowIndex
//firstPointDistance = (((x3) * (y3 - y1) - (startRowIndex - y3) * (x3 - x1)) /(lengthOfPaint));
// y = slope * x + beta
//=> slope * x - y + beta = 0
double slope = (y3 - y1) / (x3 - x1);
double beta = (y3 - slope * x3);
// fomula to calculate distance from point to line a*x + b*y + c= 0
// is d = (a*x1 + b*y1 + c) / sqrt(a*a + b*b)
// in this case d = (slope * x1 + (-1) * y1 + beta) / sqrt ( slope * slope + (-1) * (-1))
//firstPointDistance = (-startRowIndex + beta) / Math.Sqrt(slope * slope + 1);
//http://mathworld.wolfram.com/Point-LineDistance2-Dimensional.html
firstPointDistance = ((x3 - x1) * (y1 - startRowIndex) - (x1 - 0) * (y3 - y1))
/ lengthOfPaint;
int startOfRowIndex = (int)((firstPointDistance * ColorIndexIncludeIncrementScale / lengthOfPaint));
int rowColorIndexIncrementScaled = (int)(((-(x3 - x1) / lengthOfPaint) * ColorIndexIncludeIncrementScale / lengthOfPaint));
#endregion
#region FILLING
if (paint.Ramp.NoBlendingColor)
{
if (paint.Style != GradientStyle.Pad)
{
#region GradientStyle.Reflect || GradientStyle.Repeat
// in case reflect and repeat, we don't care value that out of range
startOfRowIndex &= ColorIndexIncludeIncrementDoubleMask;
rowColorIndexIncrementScaled &= ColorIndexIncludeIncrementDoubleMask;
scaledIncrementColorIndex &= ColorIndexIncludeIncrementDoubleMask;
#region filling without blend for horizontal lines
// when no need to blending, when draw a horizontal line
// do not need check the back color, alway setup
startRowIndex--;
while (++startRowIndex <= endRowIndex)
{
currentCoverage = scLastCoverage = scLastX = 0;
if (rows[startRowIndex] != null)
{
// get first cell in current row
currentCellData = rows[startRowIndex].First;
if (currentCellData != null)
{
// calculate the first cell color index
#region second way to implement color index
currentColorIndexScaled = startOfRowIndex;
#endregion
#region fill current row
do
{
currentArea = currentCellData.Area;
#region blend horizontal line
if ((currentCellData.X > scLastX + 1))
{
if (scLastCoverage != 0)
{
// fast bit absolute
scLastCoverage = (scLastCoverage ^ (scLastCoverage >> 31)) - (scLastCoverage >> 31);
#region non-zero checking code
if (scLastCoverage > 255) scLastCoverage = 255;
#endregion
#region BLEND HORIZONTAL LINE
// calculate start and end position
startXPosition = BufferStartOffset + startRowIndex * BufferStride + scLastX + 1;
lastXPosition = BufferStartOffset + startRowIndex * BufferStride + currentCellData.X;
// get current color index value
if (scLastCoverage >= 254)
{
while (startXPosition < lastXPosition)
{
BufferData[startXPosition] = builtColors[currentColorIndexScaled < 0 ?
(currentColorIndexScaled >> IncrementColorIndexShift) + 512 :
(currentColorIndexScaled >> IncrementColorIndexShift)];
startXPosition++;
// increase current color index
currentColorIndexScaled += scaledIncrementColorIndex;
currentColorIndexScaled &= ColorIndexIncludeIncrementDoubleMask;
}
}
else
{
calculatedCoverage = (byte)scLastCoverage;
while (startXPosition < lastXPosition)
{
dst = BufferData[startXPosition];
colorData = builtColors[currentColorIndexScaled < 0 ?
(currentColorIndexScaled >> IncrementColorIndexShift) + 512 :
(currentColorIndexScaled >> IncrementColorIndexShift)];
dstRB = dst & 0x00FF00FF;
dstG = (dst >> 8) & 0xFF;
BufferData[startXPosition] =
(uint)(AlphaCache[(((dst >> 24) & 0xFF) << 8) + calculatedCoverage])
| (uint)((((((((colorData & 0x0000FF00) >> 8) - dstG) * calculatedCoverage) >> 8) + dstG) << 8) & 0x0000FF00)
| (uint)((((((colorData & 0x00FF00FF) - dstRB) * calculatedCoverage) >> 8) + dstRB) & 0x00FF00FF);
startXPosition++;
// increase the current color index
currentColorIndexScaled += scaledIncrementColorIndex;
currentColorIndexScaled &= ColorIndexIncludeIncrementDoubleMask;
}
}
#endregion
}
else
{
// not filling but must set and increase the color index
currentColorIndexScaled += (currentCellData.X - scLastX - 1) * scaledIncrementColorIndex;
currentColorIndexScaled &= ColorIndexIncludeIncrementDoubleMask;
}
}
#endregion
currentCoverage += currentCellData.Coverage;
#region blend the current cell
// fast absolute
tempCover = ((currentCoverage << 9) - currentArea) >> 9;
if (tempCover != 0)
{
// fast bit absolute
tempCover = (tempCover ^ (tempCover >> 31)) - (tempCover >> 31);
#region non-zero checking code
if (tempCover > 255) tempCover = 255;
#endregion
// get current color data
#region blend pixel
//tempCover = (int)((tempCover * colorAlpha) >> 8);
////if (tempCover > 255) tempCover = 255;
calculatedCoverage = (byte)tempCover;
startXPosition = BufferStartOffset + startRowIndex * BufferStride + currentCellData.X;
#region blend here
dst = BufferData[startXPosition];
colorData = builtColors[currentColorIndexScaled < 0 ?
(currentColorIndexScaled >> IncrementColorIndexShift) + 512 :
(currentColorIndexScaled >> IncrementColorIndexShift)];
dstRB = dst & 0x00FF00FF;
dstG = (dst >> 8) & 0xFF;
BufferData[startXPosition] =
(uint)(AlphaCache[(((dst >> 24) & 0xFF) << 8) + calculatedCoverage])
| (uint)((((((((colorData & 0x0000FF00) >> 8) - dstG) * calculatedCoverage) >> 8) + dstG) << 8) & 0x0000FF00)
| (uint)((((((colorData & 0x00FF00FF) - dstRB) * calculatedCoverage) >> 8) + dstRB) & 0x00FF00FF);
#endregion
#endregion
}
#endregion
// alway increment color index
currentColorIndexScaled += scaledIncrementColorIndex;
currentColorIndexScaled &= ColorIndexIncludeIncrementDoubleMask;
// assign value for next loop
scLastCoverage = currentCoverage;
scLastX = currentCellData.X;
// move to next cell
currentCellData = currentCellData.Next;
} while (currentCellData != null);
#endregion
}
}
#region each row we need increase the value of color index
startOfRowIndex += rowColorIndexIncrementScaled;
startOfRowIndex &= ColorIndexIncludeIncrementDoubleMask;
#endregion
}
#endregion
#endregion
}//Reflect or Repeat mode
else
{//Pad mode
#region GradientStyle.Pad
// when no need to blending, when draw a horizontal line
// do not need check the back color, alway setup
startRowIndex--;
while (++startRowIndex <= endRowIndex)
{
currentCoverage = scLastCoverage = scLastX = 0;
if (rows[startRowIndex] != null)
{
// get first cell in current row
currentCellData = rows[startRowIndex].First;
if (currentCellData != null)
{
// calculate the first cell color index
#region second way to implement color index
currentColorIndexScaled = startOfRowIndex;
#endregion
#region fill current row
do
{
currentArea = currentCellData.Area;
#region blend horizontal line
if ((currentCellData.X > scLastX + 1))
{
if (scLastCoverage != 0)
{
// fast bit absolute
scLastCoverage = (scLastCoverage ^ (scLastCoverage >> 31)) - (scLastCoverage >> 31);
#region non-zero checking code
if (scLastCoverage > 255) scLastCoverage = 255;
#endregion
#region BLEND HORIZONTAL LINE
// calculate start and end position
startXPosition = BufferStartOffset + startRowIndex * BufferStride + scLastX + 1;
lastXPosition = BufferStartOffset + startRowIndex * BufferStride + currentCellData.X;
// get current color index value
if (scLastCoverage >= 254)
{
while (startXPosition < lastXPosition)
{
BufferData[startXPosition] = builtColors[
currentColorIndexScaled < 0 ?
0 :
(currentColorIndexScaled > ColorIndexIncludeIncrementScale ?
255 :
(currentColorIndexScaled >> IncrementColorIndexShift))];
startXPosition++;
// increase current color index
currentColorIndexScaled += scaledIncrementColorIndex;
}
}
else
{
calculatedCoverage = (byte)scLastCoverage;
while (startXPosition < lastXPosition)
{
colorData = builtColors[
currentColorIndexScaled < 0 ?
0 :
(currentColorIndexScaled > ColorIndexIncludeIncrementScale ?
255 :
(currentColorIndexScaled >> IncrementColorIndexShift))];
#region blend here
dst = BufferData[startXPosition];
dstRB = dst & 0x00FF00FF;
dstG = (dst >> 8) & 0xFF;
BufferData[startXPosition] =
(uint)(AlphaCache[(((dst >> 24) & 0xFF) << 8) + calculatedCoverage])
| (uint)((((((((colorData & 0x0000FF00) >> 8) - dstG) * calculatedCoverage) >> 8) + dstG) << 8) & 0x0000FF00)
| (uint)((((((colorData & 0x00FF00FF) - dstRB) * calculatedCoverage) >> 8) + dstRB) & 0x00FF00FF);
#endregion
startXPosition++;
// increase the current color index
currentColorIndexScaled += scaledIncrementColorIndex;
}
}
#endregion
}
else
{
// not filling but must set and increase the color index
currentColorIndexScaled += (currentCellData.X - scLastX - 1) * scaledIncrementColorIndex;
}
}
#endregion
currentCoverage += currentCellData.Coverage;
#region blend the current cell
// fast absolute
tempCover = ((currentCoverage << 9) - currentArea) >> 9;
if (tempCover != 0)
{
// fast bit absolute
tempCover = (tempCover ^ (tempCover >> 31)) - (tempCover >> 31);
#region non-zero checking code
if (tempCover > 255) tempCover = 255;
#endregion
// get current color data
#region blend pixel
calculatedCoverage = (byte)tempCover;
startXPosition = BufferStartOffset + startRowIndex * BufferStride + currentCellData.X;
#region blend here
dst = BufferData[startXPosition];
colorData = builtColors[
currentColorIndexScaled < 0 ?
0 :
(currentColorIndexScaled > ColorIndexIncludeIncrementScale ?
255 :
(currentColorIndexScaled >> IncrementColorIndexShift))];
dstRB = dst & 0x00FF00FF;
dstG = (dst >> 8) & 0xFF;
BufferData[startXPosition] =
(uint)(AlphaCache[(((dst >> 24) & 0xFF) << 8) + calculatedCoverage])
| (uint)((((((((colorData & 0x0000FF00) >> 8) - dstG) * calculatedCoverage) >> 8) + dstG) << 8) & 0x0000FF00)
| (uint)((((((colorData & 0x00FF00FF) - dstRB) * calculatedCoverage) >> 8) + dstRB) & 0x00FF00FF);
#endregion
#endregion
}
#endregion
// alway increment color index
currentColorIndexScaled += scaledIncrementColorIndex;
// assign value for next loop
scLastCoverage = currentCoverage;
scLastX = currentCellData.X;
// move to next cell
currentCellData = currentCellData.Next;
} while (currentCellData != null);
#endregion
}
}
#region each row we need increase the value of color index
startOfRowIndex += rowColorIndexIncrementScaled;
#endregion
}
#endregion
}//Pad mode
}//paint.Ramp.NoBlendingColor
else
{//has blending color
// blending include alpha of built color
if (paint.Style != GradientStyle.Pad)
{
#region GradientStyle.Reflect || GradientStyle.Repeat
// in case reflect and repeat, we don't care value that out of range
startOfRowIndex &= ColorIndexIncludeIncrementDoubleMask;
rowColorIndexIncrementScaled &= ColorIndexIncludeIncrementDoubleMask;
// when no need to blending, when draw a horizontal line
// do not need check the back color, alway setup
#region filling without blend for horizontal lines
startRowIndex--;
while (++startRowIndex <= endRowIndex)
{
currentCoverage = scLastCoverage = scLastX = 0;
if (rows[startRowIndex] != null)
{
// get first cell in current row
currentCellData = rows[startRowIndex].First;
if (currentCellData != null)
{
// calculate the first cell color index
#region second way to implement color index
currentColorIndexScaled = startOfRowIndex;
#endregion
#region fill current row
do
{
currentArea = currentCellData.Area;
#region blend horizontal line
if ((currentCellData.X > scLastX + 1))
{
if (scLastCoverage != 0)
{
// fast bit absolute
scLastCoverage = (scLastCoverage ^ (scLastCoverage >> 31)) - (scLastCoverage >> 31);
#region non-zero checking code
if (scLastCoverage > 255) scLastCoverage = 255;
#endregion
#region BLEND HORIZONTAL LINE
// calculate start and end position
startXPosition = BufferStartOffset + startRowIndex * BufferStride + scLastX + 1;
lastXPosition = BufferStartOffset + startRowIndex * BufferStride + currentCellData.X;
while (startXPosition < lastXPosition)
{
colorData = builtColors[currentColorIndexScaled < 0 ?
(currentColorIndexScaled >> IncrementColorIndexShift) + 512 :
(currentColorIndexScaled >> IncrementColorIndexShift)];
// get current color index value
calculatedCoverage = (byte)(((colorData >> 24) * scLastCoverage) >> 8);
#region blend here
dst = BufferData[startXPosition];
dstRB = dst & 0x00FF00FF;
dstG = (dst >> 8) & 0xFF;
BufferData[startXPosition] =
(uint)(AlphaCache[(((dst >> 24) & 0xFF) << 8) + calculatedCoverage])
| (uint)((((((((colorData & 0x0000FF00) >> 8) - dstG) * calculatedCoverage) >> 8) + dstG) << 8) & 0x0000FF00)
| (uint)((((((colorData & 0x00FF00FF) - dstRB) * calculatedCoverage) >> 8) + dstRB) & 0x00FF00FF);
startXPosition++;
#endregion
// increase the current color index
currentColorIndexScaled += scaledIncrementColorIndex;
currentColorIndexScaled &= ColorIndexIncludeIncrementDoubleMask;
}
#endregion
}
else
{
// not filling but must set and increase the color index
currentColorIndexScaled += (currentCellData.X - scLastX - 1) * scaledIncrementColorIndex;
currentColorIndexScaled &= ColorIndexIncludeIncrementDoubleMask;
}
}
#endregion
currentCoverage += currentCellData.Coverage;
#region blend the current cell
// fast absolute
tempCover = ((currentCoverage << 9) - currentArea) >> 9;
if (tempCover != 0)
{
// fast bit absolute
tempCover = (tempCover ^ (tempCover >> 31)) - (tempCover >> 31);
#region non-zero checking code
if (tempCover > 255) tempCover = 255;
#endregion
// get current color data
#region blend pixel
//tempCover = (int)((tempCover * colorAlpha) >> 8);
////if (tempCover > 255) tempCover = 255;
//calculatedCoverage = (byte)tempCover;
startXPosition = BufferStartOffset + startRowIndex * BufferStride + currentCellData.X;
#region blend here
colorData = builtColors[currentColorIndexScaled < 0 ?
(currentColorIndexScaled >> IncrementColorIndexShift) + 512 :
(currentColorIndexScaled >> IncrementColorIndexShift)];
calculatedCoverage = (byte)(((colorData >> 24) * tempCover) >> 8);
dst = BufferData[startXPosition];
dstRB = dst & 0x00FF00FF;
dstG = (dst >> 8) & 0xFF;
BufferData[startXPosition] =
(uint)(AlphaCache[(((dst >> 24) & 0xFF) << 8) + calculatedCoverage])
| (uint)((((((((colorData & 0x0000FF00) >> 8) - dstG) * calculatedCoverage) >> 8) + dstG) << 8) & 0x0000FF00)
| (uint)((((((colorData & 0x00FF00FF) - dstRB) * calculatedCoverage) >> 8) + dstRB) & 0x00FF00FF);
#endregion
#endregion
}
#endregion
// alway increment color index
currentColorIndexScaled += scaledIncrementColorIndex;
currentColorIndexScaled &= ColorIndexIncludeIncrementDoubleMask;
// assign value for next loop
scLastCoverage = currentCoverage;
scLastX = currentCellData.X;
// move to next cell
currentCellData = currentCellData.Next;
} while (currentCellData != null);
#endregion
}
}
#region each row we need increase the value of color index
startOfRowIndex += rowColorIndexIncrementScaled;
startOfRowIndex &= ColorIndexIncludeIncrementDoubleMask;
#endregion
}
#endregion
#endregion
}//Reflect or Repeat mode
else
{//Pad mode
#region GradientStyle.Pad
// when no need to blending, when draw a horizontal line
// do not need check the back color, alway setup
startRowIndex--;
while (++startRowIndex <= endRowIndex)
{
currentCoverage = scLastCoverage = scLastX = 0;
if (rows[startRowIndex] != null)
{
// get first cell in current row
currentCellData = rows[startRowIndex].First;
if (currentCellData != null)
{
// calculate the first cell color index
#region second way to implement color index
currentColorIndexScaled = startOfRowIndex;
#endregion
#region fill current row
do
{
currentArea = currentCellData.Area;
#region blend horizontal line
if ((currentCellData.X > scLastX + 1))
{
if (scLastCoverage != 0)
{
// fast bit absolute
scLastCoverage = (scLastCoverage ^ (scLastCoverage >> 31)) - (scLastCoverage >> 31);
#region non-zero checking code
if (scLastCoverage > 255) scLastCoverage = 255;
#endregion
#region BLEND HORIZONTAL LINE
// calculate start and end position
startXPosition = BufferStartOffset + startRowIndex * BufferStride + scLastX + 1;
lastXPosition = BufferStartOffset + startRowIndex * BufferStride + currentCellData.X;
// get current color index value
while (startXPosition < lastXPosition)
{
colorData = builtColors[currentColorIndexScaled < 0 ?
0 : (currentColorIndexScaled > ColorIndexIncludeIncrementScale ? 255 :
(currentColorIndexScaled >> IncrementColorIndexShift))];
calculatedCoverage = (byte)(((colorData >> 24) * scLastCoverage) >> 8);
#region blend here
dst = BufferData[startXPosition];
dstRB = dst & 0x00FF00FF;
dstG = (dst >> 8) & 0xFF;
BufferData[startXPosition] =
(uint)(AlphaCache[(((dst >> 24) & 0xFF) << 8) + calculatedCoverage])
| (uint)((((((((colorData & 0x0000FF00) >> 8) - dstG) * calculatedCoverage) >> 8) + dstG) << 8) & 0x0000FF00)
| (uint)((((((colorData & 0x00FF00FF) - dstRB) * calculatedCoverage) >> 8) + dstRB) & 0x00FF00FF);
#endregion
startXPosition++;
// increase the current color index
currentColorIndexScaled += scaledIncrementColorIndex;
//currentColorIndexScaled &= ColorIndexIncludeIncrementDoubleMask;
}
#endregion
}
else
{
// not filling but must set and increase the color index
currentColorIndexScaled += (currentCellData.X - scLastX - 1) * scaledIncrementColorIndex;
//currentColorIndexScaled &= ColorIndexIncludeIncrementDoubleMask;
}
}
#endregion
currentCoverage += currentCellData.Coverage;
#region blend the current cell
// fast absolute
tempCover = ((currentCoverage << 9) - currentArea) >> 9;
if (tempCover != 0)
{
// fast bit absolute
tempCover = (tempCover ^ (tempCover >> 31)) - (tempCover >> 31);
#region non-zero checking code
if (tempCover > 255) tempCover = 255;
#endregion
// get current color data
#region blend pixel
//calculatedCoverage = (byte)tempCover;
startXPosition = BufferStartOffset + startRowIndex * BufferStride + currentCellData.X;
#region blend here
colorData = builtColors[currentColorIndexScaled < 0 ?
0 : (currentColorIndexScaled > ColorIndexIncludeIncrementScale ? 255 :
(currentColorIndexScaled >> IncrementColorIndexShift))];
calculatedCoverage = (byte)(((colorData >> 24) * tempCover) >> 8);
dst = BufferData[startXPosition];
dstRB = dst & 0x00FF00FF;
dstG = (dst >> 8) & 0xFF;
BufferData[startXPosition] =
(uint)(AlphaCache[(((dst >> 24) & 0xFF) << 8) + calculatedCoverage])
| (uint)((((((((colorData & 0x0000FF00) >> 8) - dstG) * calculatedCoverage) >> 8) + dstG) << 8) & 0x0000FF00)
| (uint)((((((colorData & 0x00FF00FF) - dstRB) * calculatedCoverage) >> 8) + dstRB) & 0x00FF00FF);
#endregion
#endregion
}
#endregion
// alway increment color index
currentColorIndexScaled += scaledIncrementColorIndex;
// assign value for next loop
scLastCoverage = currentCoverage;
scLastX = currentCellData.X;
// move to next cell
currentCellData = currentCellData.Next;
} while (currentCellData != null);
#endregion
}
}
#region each row we need increase the value of color index
startOfRowIndex += rowColorIndexIncrementScaled;
#endregion
}
#endregion
}//Pad mode
}//has blending color
#endregion
}
/// <summary>
/// Fill to buffer base rows data information using non-zero rule
/// </summary>
/// <param name="paint">linear gradient object</param>
/// <param name="rows">row data information</param>
/// <param name="startRowIndex">start row index in row array need to draw</param>
/// <param name="endRowIndex">end row index in end row array need to draw</param>
/// <param name="gammaLutRed">gamma look up table for red</param>
/// <param name="gammaLutGreen">gamma look up table for green</param>
/// <param name="gammaLutBlue">gamma look up table for blue</param>
void OnFillingVerticalEvenOdd(
LinearGradient paint,
uint opacity,
RowData[] rows,
int startRowIndex,
int endRowIndex,
byte[] gammaLutRed,
byte[] gammaLutGreen,
byte[] gammaLutBlue)
{
// now not need to check null or not
uint[] builtColors = paint.GetLinearColors(opacity);
/*Base on startX,endX, we need build fixedColor array
* contain width count elements. So that, at a column, we
* can lookup color for that column.
*/
#region build fixed color
double startY = paint.StartY;
double endY = paint.EndY;
// width of this
int height = endRowIndex - startRowIndex + 1;
uint[] fixedColor = new uint[height];
int distanceScaled = (int)(Math.Abs(startY - endY) * DistanceScale);
if (distanceScaled == 0)
{
FillingException.Publish(typeof(LinearGradient), "Start point and end point are too close");
return;
}
#region building fixed color array
if (paint.Style == GradientStyle.Pad)
{
#region GradientStyle.Pad
int startFixedIndex = (((
(((height + startRowIndex) << DistanceShift) - (int)(startY * DistanceScale))
<< ColorIndexShift) / distanceScaled)) << IncrementColorIndexShift;
int colorIncrement = (DistanceScale * ColorIndexIncludeIncrementScale) / distanceScaled;
if (endY < startY)
{
colorIncrement = -colorIncrement;
startFixedIndex = -startFixedIndex;
}
while (height-- > 0)
{
fixedColor[height] =
builtColors[startFixedIndex < 0 ?
0 :
(startFixedIndex > ColorIndexIncludeIncrementScale ?
255 :
(startFixedIndex >> IncrementColorIndexShift))];
startFixedIndex -= colorIncrement;
}
#endregion
}
else
{
#region GradientStyle.Repeat || GradientStyle.Reflect
int startFixedIndex = (((
(((height + startRowIndex) << DistanceShift) - (int)(startY * DistanceScale))
<< ColorIndexShift) / distanceScaled)) << IncrementColorIndexShift;
int colorIncrement = (DistanceScale * ColorIndexIncludeIncrementScale) / distanceScaled;
if (endY < startY)
{
colorIncrement = -colorIncrement;
}
startFixedIndex &= ColorIndexIncludeIncrementDoubleMask;
while (height-- > 0)
{
fixedColor[height] = builtColors[
startFixedIndex < 0 ?
(startFixedIndex >> IncrementColorIndexShift) + 512 :
(startFixedIndex >> IncrementColorIndexShift)];
startFixedIndex -= colorIncrement;
startFixedIndex &= ColorIndexIncludeIncrementDoubleMask;
}
#endregion
}
#endregion
#endregion
#region private variable for filling
int currentCoverage, scLastCoverage, scLastX = 0;
int tempCover = 0;
int currentArea = 0;
int lastXPosition = 0;
int startXPosition = 0;
byte calculatedCoverage = 0;
int currentColorIndexValue = 0;
CellData currentCellData = null;
uint colorData = 0;
uint colorAlpha = 0;
uint colorG = 0;
uint colorRB = 0;
uint dst, dstRB, dstG;
#endregion
#region FILLING
if (paint.Ramp.NoBlendingColor)
{
// when no need to blending, when draw a horizontal line
// do not need check the back color, alway setup
#region filling without blend for horizontal lines
startRowIndex--;
while (++startRowIndex <= endRowIndex)
{
currentCoverage = scLastCoverage = scLastX = 0;
if (rows[startRowIndex] != null)
{
#region calculate and get current color
colorData = fixedColor[currentColorIndexValue];
colorAlpha = (colorData >> 24);
colorG = (colorData & 0x0000FF00) >> 8;
colorRB = (colorData & 0x00FF00FF);
#endregion
// get first cell in current row
currentCellData = rows[startRowIndex].First;
if (currentCellData != null)
{
#region fill current row
do
{
currentArea = currentCellData.Area;
#region blend horizontal line
if ((currentCellData.X > scLastX + 1) && (scLastCoverage != 0))
{
// fast bit absolute
scLastCoverage = (scLastCoverage ^ (scLastCoverage >> 31)) - (scLastCoverage >> 31);
//#region non-zero checking code
//if (scLastCoverage > 255) scLastCoverage = 255;
//#endregion
#region even-odd change
scLastCoverage &= 511;
if (scLastCoverage > 256)
{
scLastCoverage = 512 - scLastCoverage;
}
#endregion
#region BLEND HORIZONTAL LINE
// calculate start and end position
startXPosition = BufferStartOffset + startRowIndex * BufferStride + scLastX + 1;
lastXPosition = BufferStartOffset + startRowIndex * BufferStride + currentCellData.X;
// get current color index value
if (scLastCoverage >= 254)
{
while (startXPosition < lastXPosition)
{
BufferData[startXPosition++] = colorData;
}
}
else
{
while (startXPosition < lastXPosition)
{
calculatedCoverage = (byte)((scLastCoverage * colorAlpha) >> 8);
if (calculatedCoverage >= 254)
{
BufferData[startXPosition] = colorData;
}
else
{
#region blend here
//dst = BufferData[startXPosition];
//dstRB = dst & 0x00FF00FF;
//dstG = (dst >> 8) & 0xFF;
//BufferData[startXPosition] =
// (uint)(AlphaCache[(((dst >> 24) & 0xFF) << 8) + calculatedCoverage])
// | (uint)((((((colorG - dstG) * calculatedCoverage) >> 8) + dstG) << 8) & 0x0000FF00)
// | (uint)(((((colorRB - dstRB) * calculatedCoverage) >> 8) + dstRB) & 0x00FF00FF);
#region gamma apply
dst = BufferData[startXPosition];
dstG = (dst >> 8) & 0xFF;
dstRB = ((((colorRB - (dst & 0x00FF00FF)) * calculatedCoverage) >> 8) + (dst & 0x00FF00FF));
BufferData[startXPosition] =
(uint)((AlphaCache[(((dst >> 24) & 0xFF) << 8) + calculatedCoverage])
| (((uint)gammaLutGreen[(((((colorG - dstG) * calculatedCoverage) >> 8) + dstG) & 0xFF)] << 8))
| ((uint)gammaLutRed[(dstRB & 0x00FF0000) >> 16] << 16)
| (gammaLutBlue[(dstRB & 0x00FF)]));
#endregion
#endregion
}
startXPosition++;
}
}
#endregion
}
#endregion
currentCoverage += currentCellData.Coverage;
#region blend the current cell
// fast absolute
tempCover = ((currentCoverage << 9) - currentArea) >> 9;
if (tempCover != 0)
{
// fast bit absolute
tempCover = (tempCover ^ (tempCover >> 31)) - (tempCover >> 31);
//#region non-zero checking code
//if (tempCover > 255) tempCover = 255;
//#endregion
#region even-odd change
tempCover &= 511;
if (tempCover > 256)
{
tempCover = 512 - tempCover;
}
#endregion
// get current color data
#region blend pixel
tempCover = (int)((tempCover * colorAlpha) >> 8);
//if (tempCover > 255) tempCover = 255;
calculatedCoverage = (byte)tempCover;
startXPosition = BufferStartOffset + startRowIndex * BufferStride + currentCellData.X;
#region blend here
//dst = BufferData[startXPosition];
//dstRB = dst & 0x00FF00FF;
//dstG = (dst >> 8) & 0xFF;
//BufferData[startXPosition] =
// (uint)(AlphaCache[(((dst >> 24) & 0xFF) << 8) + calculatedCoverage])
// | (uint)((((((colorG - dstG) * calculatedCoverage) >> 8) + dstG) << 8) & 0x0000FF00)
// | (uint)(((((colorRB - dstRB) * calculatedCoverage) >> 8) + dstRB) & 0x00FF00FF);
#region gamma apply
dst = BufferData[startXPosition];
dstG = (dst >> 8) & 0xFF;
dstRB = ((((colorRB - (dst & 0x00FF00FF)) * calculatedCoverage) >> 8) + (dst & 0x00FF00FF));
BufferData[startXPosition] =
(uint)((AlphaCache[(((dst >> 24) & 0xFF) << 8) + calculatedCoverage])
| (((uint)gammaLutGreen[(((((colorG - dstG) * calculatedCoverage) >> 8) + dstG) & 0xFF)] << 8))
| ((uint)gammaLutRed[(dstRB & 0x00FF0000) >> 16] << 16)
| (gammaLutBlue[(dstRB & 0x00FF)]));
#endregion
#endregion
#endregion
}
#endregion
scLastCoverage = currentCoverage;
scLastX = currentCellData.X;
// move to next cell
currentCellData = currentCellData.Next;
} while (currentCellData != null);
#endregion
}
}
// increase color index
currentColorIndexValue++;
}
#endregion
}
else
{
#region perform normal filling
startRowIndex--;
while (++startRowIndex <= endRowIndex)
{
currentCoverage = scLastCoverage = scLastX = 0;
if (rows[startRowIndex] != null)
{
#region calculate and get current color
colorData = fixedColor[currentColorIndexValue];
colorAlpha = (colorData >> 24);
colorG = (colorData & 0x0000FF00) >> 8;
colorRB = (colorData & 0x00FF00FF);
#endregion
// get first cell in current row
currentCellData = rows[startRowIndex].First;
if (currentCellData != null)
{
#region fill current row
do
{
currentArea = currentCellData.Area;
#region blend horizontal line
if ((currentCellData.X > scLastX + 1) && (scLastCoverage != 0))
{
// fast bit absolute
scLastCoverage = (scLastCoverage ^ (scLastCoverage >> 31)) - (scLastCoverage >> 31);
#region even-odd change
scLastCoverage &= 511;
if (scLastCoverage > 256)
{
scLastCoverage = 512 - scLastCoverage;
}
#endregion
#region BLEND HORIZONTAL LINE
// calculate start and end position
startXPosition = BufferStartOffset + startRowIndex * BufferStride + scLastX + 1;
lastXPosition = BufferStartOffset + startRowIndex * BufferStride + currentCellData.X;
while (startXPosition < lastXPosition)
{
calculatedCoverage = (byte)((scLastCoverage * colorAlpha) >> 8);
if (calculatedCoverage >= 254)
{
BufferData[startXPosition] = colorData;
}
else
{
#region blend here
//dst = BufferData[startXPosition];
//dstRB = dst & 0x00FF00FF;
//dstG = (dst >> 8) & 0xFF;
//BufferData[startXPosition] =
// (uint)(AlphaCache[(((dst >> 24) & 0xFF) << 8) + calculatedCoverage])
// | (uint)((((((colorG - dstG) * calculatedCoverage) >> 8) + dstG) << 8) & 0x0000FF00)
// | (uint)(((((colorRB - dstRB) * calculatedCoverage) >> 8) + dstRB) & 0x00FF00FF);
#region gamma apply
dst = BufferData[startXPosition];
dstG = (dst >> 8) & 0xFF;
dstRB = ((((colorRB - (dst & 0x00FF00FF)) * calculatedCoverage) >> 8) + (dst & 0x00FF00FF));
BufferData[startXPosition] =
(uint)((AlphaCache[(((dst >> 24) & 0xFF) << 8) + calculatedCoverage])
| (((uint)gammaLutGreen[(((((colorG - dstG) * calculatedCoverage) >> 8) + dstG) & 0xFF)] << 8))
| ((uint)gammaLutRed[(dstRB & 0x00FF0000) >> 16] << 16)
| (gammaLutBlue[(dstRB & 0x00FF)]));
#endregion
#endregion
}
startXPosition++;
}
#endregion
}
#endregion
currentCoverage += currentCellData.Coverage;
#region blend the current cell
// fast absolute
tempCover = ((currentCoverage << 9) - currentArea) >> 9;
if (tempCover != 0)
{
// fast bit absolute
tempCover = (tempCover ^ (tempCover >> 31)) - (tempCover >> 31);
#region even-odd change
tempCover &= 511;
if (tempCover > 256)
{
tempCover = 512 - tempCover;
}
#endregion
#region blend pixel
tempCover = (int)((tempCover * colorAlpha) >> 8);
//if (tempCover > 255) tempCover = 255;
calculatedCoverage = (byte)tempCover;
startXPosition = BufferStartOffset + startRowIndex * BufferStride + currentCellData.X;
#region blend here
//dst = BufferData[startXPosition];
//dstRB = dst & 0x00FF00FF;
//dstG = (dst >> 8) & 0xFF;
//BufferData[startXPosition] =
// (uint)(AlphaCache[(((dst >> 24) & 0xFF) << 8) + calculatedCoverage])
// | (uint)((((((colorG - dstG) * calculatedCoverage) >> 8) + dstG) << 8) & 0x0000FF00)
// | (uint)(((((colorRB - dstRB) * calculatedCoverage) >> 8) + dstRB) & 0x00FF00FF);
#region gamma apply
dst = BufferData[startXPosition];
dstG = (dst >> 8) & 0xFF;
dstRB = ((((colorRB - (dst & 0x00FF00FF)) * calculatedCoverage) >> 8) + (dst & 0x00FF00FF));
BufferData[startXPosition] =
(uint)((AlphaCache[(((dst >> 24) & 0xFF) << 8) + calculatedCoverage])
| (((uint)gammaLutGreen[(((((colorG - dstG) * calculatedCoverage) >> 8) + dstG) & 0xFF)] << 8))
| ((uint)gammaLutRed[(dstRB & 0x00FF0000) >> 16] << 16)
| (gammaLutBlue[(dstRB & 0x00FF)]));
#endregion
#endregion
#endregion
}
#endregion
scLastCoverage = currentCoverage;
scLastX = currentCellData.X;
// move to next cell
currentCellData = currentCellData.Next;
} while (currentCellData != null);
#endregion
}
}
// increase color index
currentColorIndexValue++;
}
#endregion
}
#endregion
}
