public void Transform(Transform2i t)
{
UpdatePixels();
Color[] processedPixels = new Color[size];
for (int y = 0; y < height; ++y)
{
int yOffset = y * width;
int fpY = MathUtils.FromInt(y);
int constX = MathUtils.Mul(fpY, t.matrixs[0][1])
+ t.matrixs[0][2];
int constY = MathUtils.Mul(fpY, t.matrixs[1][1])
+ t.matrixs[1][2];
for (int x = 0; x < width; ++x)
{
int fpX = MathUtils.FromInt(x);
int tx = MathUtils.ToInt(MathUtils.Mul(fpX,
t.matrixs[0][0]) + constX);
if (tx < 0 || width <= tx)
{
processedPixels[x + yOffset].PackedValue = transparent;
}
else
{
int ty = MathUtils.ToInt(MathUtils.Mul(fpX,
t.matrixs[1][0]) + constY);
if (ty < 0 || height <= ty)
{
processedPixels[x + yOffset].PackedValue = transparent;
}
else
{
processedPixels[x + yOffset] = pixels[tx + ty
* width];
}
}
}
}
this.pixels = processedPixels;
this.isDitry = true;
}
public void Rotate(float angle, float x, float y)
{
UpdatePixels();
Transform2i transform = new Transform2i();
transform.Rotate(angle, x, y);
Color[] processedPixels = new Color[size];
for (int j = 0; j < height; ++j)
{
int yOffset = j * width;
int fpY = MathUtils.FromInt(j);
int constX = MathUtils.Mul(fpY, transform.matrixs[0][1])
+ transform.matrixs[0][2];
int constY = MathUtils.Mul(fpY, transform.matrixs[1][1])
+ transform.matrixs[1][2];
for (int i = 0; i < width; ++i)
{
int fpX = MathUtils.FromInt(i);
int tx = MathUtils.ToInt(MathUtils.Mul(fpX,
transform.matrixs[0][0]) + constX);
if (tx < 0 || width <= tx)
{
processedPixels[i + yOffset].PackedValue = transparent;
}
else
{
int ty = MathUtils.ToInt(MathUtils.Mul(fpX,
transform.matrixs[1][0]) + constY);
if (ty < 0 || height <= ty)
{
processedPixels[i + yOffset].PackedValue = transparent;
}
else
{
processedPixels[i + yOffset] = pixels[tx + ty
* width];
}
}
}
}
this.pixels = processedPixels;
this.isDitry = true;
}
