private void calcMovementUpDown()
{
imgToArray();
BlackLines.Clear();
bool lineStarted = false;
int x0 = 0, y0 = 0;
bool goingDown = true;
for (int x = 0; x < pxArrayWidth; x++)
{
for (int i = 0; i < pxArrayHeight - 1; i++)
{
int y;
if (goingDown)
{
y = i;
}
else
{
y = pxArrayHeight - 1 - i;
}
if (!lineStarted && pixelArray[x, y]) //if this is the first black pixel in a new line
{
x0 = x; //saves coordinates for start of new line
y0 = y;
lineStarted = true;
}
int endY = y;
if (lineStarted)
{
if (goingDown && (!pixelArray[x, y + 1] || y >= pxArrayHeight - 2)) //next downward pixel is white OR current array location is beyond pixel height
{
if (pixelArray[x, y + 1]) //check the very last pixel as well
{
endY = y + 1;
}
lineStarted = false; //start a new line
BlackLines.Add(new TraceLine((x0 * ratioWidthToPx) + ImgMoveX, (y0 * ratioHeightToPx) + ImgMoveY, (x * ratioWidthToPx) + ImgMoveX, (endY * ratioHeightToPx) + ImgMoveY)); //saves coordinates of last pixel in the line
}
if (!goingDown && (!pixelArray[x, y - 1] || y <= 1))
{
if (pixelArray[x, y - 1]) //check the very last pixel as well
{
endY = y - 1; //endY = y + 1;
}
lineStarted = false;
BlackLines.Add(new TraceLine((x0 * ratioWidthToPx) + ImgMoveX, (y0 * ratioHeightToPx) + ImgMoveY, (x * ratioWidthToPx) + ImgMoveX, (endY * ratioHeightToPx) + ImgMoveY)); //saves coordinates of last pixel in the line
}
}
}
goingDown = !goingDown;
} //for x
}
private void calcMovementSideToSide()
{
imgToArray();
BlackLines.Clear();
bool lineStarted = false;
int x0 = 0, y0 = 0;
bool leftToRight = true;
for (int y = 0; y < pxArrayHeight; y++)
{
for (int i = 0; i < pxArrayWidth - 1; i++)
{
int x;
if (leftToRight)
{
x = i;
}
else
{
x = pxArrayWidth - 1 - i;
}
if (!lineStarted && pixelArray[x, y]) //if this is the first black pixel in a new line
{
x0 = x; //saves coordinates for start of new line
y0 = y;
lineStarted = true;
}
int endX = x;
if (lineStarted)
{
if (leftToRight && (!pixelArray[x + 1, y] || x >= pxArrayWidth - 2))
{
if (pixelArray[x + 1, y]) //check the very last pixel as well
{
endX = x + 1;
}
lineStarted = false; //start a new line
BlackLines.Add(new TraceLine((x0 * ratioWidthToPx) + ImgMoveX, (y0 * ratioHeightToPx) + ImgMoveY, (endX * ratioWidthToPx) + ImgMoveX, (y * ratioHeightToPx) + ImgMoveY)); //saves coordinates of last pixel in the line
}
if (!leftToRight && (!pixelArray[x - 1, y] || x <= 1))
{
if (pixelArray[x - 1, y]) //check the very last pixel as well
{
endX = x + 1;
}
lineStarted = false;
BlackLines.Add(new TraceLine((x0 * ratioWidthToPx) + ImgMoveX, (y0 * ratioHeightToPx) + ImgMoveY, (endX * ratioWidthToPx) + ImgMoveX, (y * ratioHeightToPx) + ImgMoveY)); //saves coordinates of last pixel in the line
}
}
}
leftToRight = !leftToRight;
} //for y
}