public bool BuildTexturedQuads(Rectangle targetArea, out TexturedQuad[] quads)
{
// calc where each point is
int left = (int)Math.Floor((double)targetArea.Left / MatrixSquareCount1D);
int right = (int)Math.Floor((double)targetArea.Right / MatrixSquareCount1D);
if (targetArea.Right % MatrixSquareCount1D == 0)
{
right--;
}
int top = (int)Math.Floor((double)targetArea.Top / MatrixSquareCount1D);
int bottom = (int)Math.Floor((double)targetArea.Bottom / MatrixSquareCount1D);
if (targetArea.Bottom % MatrixSquareCount1D == 0)
{
bottom--;
}
// process intersections into quads
TexturedQuad[] temp = new TexturedQuad[(right - left) * (bottom - top)];
int tempCount = 0;
for (int x = left; x <= right; x++)
{
for (int y = top; y < bottom; y++)
{
Texture square = MatrixSquares[x][y];
if (square != null)
{
int bLeft = x * MatrixSquareSize;
int bRight = bLeft + MatrixSquareSize;
int bTop = y * MatrixSquareSize;
int bBottom = bTop + MatrixSquareSize;
// test to see if intersects this square
if (targetArea.Left > bRight ||
targetArea.Right < bLeft ||
targetArea.Top > bBottom ||
targetArea.Bottom < bTop)
{
continue;
}
// clip original target area
int rLeft = targetArea.Left < bLeft ? bLeft : targetArea.Left;
int rRight = targetArea.Right > bRight ? bRight : targetArea.Right;
int rTop = targetArea.Top < bTop ? bTop : targetArea.Top;
int rBottom = targetArea.Bottom > bBottom ? bBottom : targetArea.Bottom;
CustomVertex.TransformedTextured[] quad = new CustomVertex.TransformedTextured[]
{
new CustomVertex.TransformedTextured(rLeft, rTop, 1, 1, 0, 0),
new CustomVertex.TransformedTextured(rRight, rTop, 1, 1, 1, 0),
new CustomVertex.TransformedTextured(rLeft, rBottom, 1, 1, 0, 1),
new CustomVertex.TransformedTextured(rRight, rBottom, 1, 1, 1, 1)
};
temp[tempCount++] = new TexturedQuad(quad, square);
}
}
}
// refactor quads array
if (tempCount > 0)
{
quads = new TexturedQuad[tempCount];
Array.Copy(temp, quads, tempCount);
return(true);
}
else
{
quads = null;
return(false);
}
}
public bool BuildTexturedQuads(Rectangle targetArea, out TexturedQuad[] quads)
{
// calc where each point is
int left = (int)Math.Floor((double)targetArea.Left / MatrixSquareCount1D);
int right = (int)Math.Floor((double)targetArea.Right / MatrixSquareCount1D);
if (targetArea.Right % MatrixSquareCount1D == 0)
right--;
int top = (int)Math.Floor((double)targetArea.Top / MatrixSquareCount1D);
int bottom = (int)Math.Floor((double)targetArea.Bottom / MatrixSquareCount1D);
if (targetArea.Bottom % MatrixSquareCount1D == 0)
bottom--;
// process intersections into quads
TexturedQuad[] temp = new TexturedQuad[(right - left) * (bottom - top)];
int tempCount = 0;
for (int x = left; x <= right; x++)
{
for (int y = top; y < bottom; y++)
{
Texture square = MatrixSquares[x][y];
if (square != null)
{
int bLeft = x * MatrixSquareSize;
int bRight = bLeft + MatrixSquareSize;
int bTop = y * MatrixSquareSize;
int bBottom = bTop + MatrixSquareSize;
// test to see if intersects this square
if (targetArea.Left > bRight ||
targetArea.Right < bLeft ||
targetArea.Top > bBottom ||
targetArea.Bottom < bTop)
continue;
// clip original target area
int rLeft = targetArea.Left < bLeft ? bLeft : targetArea.Left;
int rRight = targetArea.Right > bRight ? bRight : targetArea.Right;
int rTop = targetArea.Top < bTop ? bTop : targetArea.Top;
int rBottom = targetArea.Bottom > bBottom ? bBottom : targetArea.Bottom;
CustomVertex.TransformedTextured[] quad = new CustomVertex.TransformedTextured[]
{
new CustomVertex.TransformedTextured(rLeft, rTop, 1, 1, 0, 0),
new CustomVertex.TransformedTextured(rRight, rTop, 1, 1, 1, 0),
new CustomVertex.TransformedTextured(rLeft, rBottom, 1, 1, 0, 1),
new CustomVertex.TransformedTextured(rRight, rBottom, 1, 1, 1, 1)
};
temp[tempCount++] = new TexturedQuad(quad, square);
}
}
}
// refactor quads array
if (tempCount > 0)
{
quads = new TexturedQuad[tempCount];
Array.Copy(temp, quads, tempCount);
return true;
}
else
{
quads = null;
return false;
}
}
