/// <summary>
/// Render a polygon.
/// </summary>
/// <param name="stroke">The stroke style to draw border</param>
/// <param name="fill">The fill style to render inner region</param>
/// <param name="coordinates">Coordinate data. Must be in format [x1, y1, x2, y2, ...]</param>
/// <remarks>The stroke and the fill can both be a null reference (Nothing in Visual Basic). If the stroke is null, no stroke is performed. If the fill is null, no fill is performed.</remarks>
public void DrawPolygon(Fill fill, double[] coordinates)
{
double[] data = null;
if (preparationRequired)
{
Prepare();
}
//transform input coordinates
if (transformRequired)
{
data = TransformCoordinates(coordinates);
}
else
{
data = coordinates;
}
//render the inner region
if (fill != null)
{
rasterizer = GetRasterizer(fill.Paint);
if ((rasterizer is TranformableRasterizer) && (transformRequired))
{
// set transform matrix to current transformable matrix
((TranformableRasterizer)rasterizer).SetTransformMatrix(currentTransform);
}
rasterizer.FillPolygon(fill, data, coordinates.Length / 2, 0);
}
}
/// <summary>
/// Preparations before drawing
/// </summary>
void Prepare()
{
if (mBuffer == null)
NullArgumentException.Publish(typeof(PixelsBuffer), "Buffer");
#region Initialize rasterizers
if (mPathGenerator == null) mPathGenerator = new DrawingPathGenerator();
if (mColorRasterizer == null) mColorRasterizer = new ColorRasterizer();
mColorRasterizer.Buffer = mBuffer;
if (mLinearGradientRasterizer == null) mLinearGradientRasterizer = new LinearGradientRasterizer();
mLinearGradientRasterizer.Buffer = mBuffer;
if (mRadialGradientRasterizer == null) mRadialGradientRasterizer = new RadialGradientRasterizer();
mRadialGradientRasterizer.Buffer = mBuffer;
preparationRequired = false;
#endregion
#region Prepare gamma correction
if (gammaPreparationRequired)
{
if (mGammaCorrected)
{
IGammaCorrector corrector = new PowerGammaCorrector(gammaRed, gammaGreen, gammaBlue);
mColorRasterizer.Gamma = corrector;
mLinearGradientRasterizer.Gamma = corrector;
mRadialGradientRasterizer.Gamma = corrector;
}
else
{
mColorRasterizer.Gamma = null;
mLinearGradientRasterizer.Gamma = null;
mRadialGradientRasterizer.Gamma = null;
}
gammaPreparationRequired = false;
}
#endregion
#region Prepare opacity masking
if (opacityPreparationRequired)
{
mColorRasterizer.OpacityMask = mOpacityMask;
mLinearGradientRasterizer.OpacityMask = mOpacityMask;
mRadialGradientRasterizer.OpacityMask = mOpacityMask;
opacityPreparationRequired = false;
}
#endregion
}
/// <summary>
/// Render a path
/// </summary>
/// <param name="stroke">The stroke style to draw border</param>
/// <param name="fill">The fill style to render inner region</param>
/// <param name="path">The path geometry</param>
/// <remarks>The stroke and the fill can both be a null reference (Nothing in Visual Basic). If the stroke is null, no stroke is performed. If the fill is null, no fill is performed.</remarks>
public void DrawPath(Fill fill, DrawingPath path)
{
if (preparationRequired)
{
Prepare();
}
#region detemin current scale factor
double sizeScale = 1.0;
if (currentTransform != null)
{
sizeScale = (currentTransform.ScaleXFactor > currentTransform.ScaleYFactor) ?
currentTransform.ScaleXFactor : currentTransform.ScaleYFactor;
}
#endregion
// this need scale factor before generate
double[][] coordinates = mPathGenerator.Generate(path, 1.0);
//transform input coordinates
//render the inner region
if (fill != null)
{
rasterizer = GetRasterizer(fill.Paint);
rasterizer.Paint = fill;
rasterizer.Begin();
if ((transformRequired))
{
if ((rasterizer is TranformableRasterizer))
{
// set transform matrix to current transformable matrix
((TranformableRasterizer)rasterizer).SetTransformMatrix(currentTransform);
}
for (int coordinateIndex = 0; coordinateIndex < coordinates.Length; coordinateIndex++)
{
rasterizer.AddPolygon(
TransformCoordinates(coordinates[coordinateIndex]),
coordinates[coordinateIndex].Length / 2, 0);
}
}
else
{
// set paint before using approach 2
for (int coordinateIndex = 0; coordinateIndex < coordinates.Length; coordinateIndex++)
{
rasterizer.AddPolygon(coordinates[coordinateIndex], coordinates[coordinateIndex].Length / 2, 0);
}
}
rasterizer.Finish();
}
}
/// <summary>
/// Render a path
/// </summary>
/// <param name="stroke">The stroke style to draw border</param>
/// <param name="fill">The fill style to render inner region</param>
/// <param name="path">The path geometry</param>
/// <remarks>The stroke and the fill can both be a null reference (Nothing in Visual Basic). If the stroke is null, no stroke is performed. If the fill is null, no fill is performed.</remarks>
public void DrawPath(Fill fill, DrawingPath path)
{
if (preparationRequired) Prepare();
#region detemin current scale factor
double sizeScale = 1.0;
if (currentTransform != null)
{
sizeScale = (currentTransform.ScaleXFactor > currentTransform.ScaleYFactor) ?
currentTransform.ScaleXFactor : currentTransform.ScaleYFactor;
}
#endregion
// this need scale factor before generate
double[][] coordinates = mPathGenerator.Generate(path, 1.0);
//transform input coordinates
//render the inner region
if (fill != null)
{
rasterizer = GetRasterizer(fill.Paint);
rasterizer.Paint = fill;
rasterizer.Begin();
if ((transformRequired))
{
if ((rasterizer is TranformableRasterizer))
{
// set transform matrix to current transformable matrix
((TranformableRasterizer)rasterizer).SetTransformMatrix(currentTransform);
}
for (int coordinateIndex = 0; coordinateIndex < coordinates.Length; coordinateIndex++)
{
rasterizer.AddPolygon(
TransformCoordinates(coordinates[coordinateIndex]),
coordinates[coordinateIndex].Length / 2, 0);
}
}
else
{
// set paint before using approach 2
for (int coordinateIndex = 0; coordinateIndex < coordinates.Length; coordinateIndex++)
{
rasterizer.AddPolygon(coordinates[coordinateIndex], coordinates[coordinateIndex].Length / 2, 0);
}
}
rasterizer.Finish();
}
}
/// <summary>
/// Render a polygon.
/// </summary>
/// <param name="stroke">The stroke style to draw border</param>
/// <param name="fill">The fill style to render inner region</param>
/// <param name="coordinates">Coordinate data. Must be in format [x1, y1, x2, y2, ...]</param>
/// <remarks>The stroke and the fill can both be a null reference (Nothing in Visual Basic). If the stroke is null, no stroke is performed. If the fill is null, no fill is performed.</remarks>
public void DrawPolygon(Fill fill, double[] coordinates)
{
double[] data = null;
if (preparationRequired) Prepare();
//transform input coordinates
if (transformRequired) data = TransformCoordinates(coordinates);
else data = coordinates;
//render the inner region
if (fill != null)
{
rasterizer = GetRasterizer(fill.Paint);
if ((rasterizer is TranformableRasterizer) && (transformRequired))
{
// set transform matrix to current transformable matrix
((TranformableRasterizer)rasterizer).SetTransformMatrix(currentTransform);
}
rasterizer.FillPolygon(fill, data, coordinates.Length / 2, 0);
}
}
/// <summary>
/// Preparations before drawing
/// </summary>
void Prepare()
{
if (mBuffer == null)
{
NullArgumentException.Publish(typeof(PixelsBuffer), "Buffer");
}
#region Initialize rasterizers
if (mPathGenerator == null)
{
mPathGenerator = new DrawingPathGenerator();
}
if (mColorRasterizer == null)
{
mColorRasterizer = new ColorRasterizer();
}
mColorRasterizer.Buffer = mBuffer;
if (mLinearGradientRasterizer == null)
{
mLinearGradientRasterizer = new LinearGradientRasterizer();
}
mLinearGradientRasterizer.Buffer = mBuffer;
if (mRadialGradientRasterizer == null)
{
mRadialGradientRasterizer = new RadialGradientRasterizer();
}
mRadialGradientRasterizer.Buffer = mBuffer;
preparationRequired = false;
#endregion
#region Prepare gamma correction
if (gammaPreparationRequired)
{
if (mGammaCorrected)
{
IGammaCorrector corrector = new PowerGammaCorrector(gammaRed, gammaGreen, gammaBlue);
mColorRasterizer.Gamma = corrector;
mLinearGradientRasterizer.Gamma = corrector;
mRadialGradientRasterizer.Gamma = corrector;
}
else
{
mColorRasterizer.Gamma = null;
mLinearGradientRasterizer.Gamma = null;
mRadialGradientRasterizer.Gamma = null;
}
gammaPreparationRequired = false;
}
#endregion
#region Prepare opacity masking
if (opacityPreparationRequired)
{
mColorRasterizer.OpacityMask = mOpacityMask;
mLinearGradientRasterizer.OpacityMask = mOpacityMask;
mRadialGradientRasterizer.OpacityMask = mOpacityMask;
opacityPreparationRequired = false;
}
#endregion
}
