public static void Paint(int framePixelSize, int frameCount, MaskFramePainter maskPainter, string fileName)
{
int imageCols = 8;
int imageRows = frameCount / imageCols;
Texture2D tex = new Texture2D(imageCols * framePixelSize, imageRows * framePixelSize, TextureFormat.RGB24, false);
DrawSpriteSheet(tex, frameCount, framePixelSize, imageCols, maskPainter);
SaveTexture(tex, fileName);
}
private static void DrawSpriteSheet(
Texture2D tex,
int frameCount, int framePixelSize, int frameCols,
MaskFramePainter maskPainter)
{
float frameProgress = 1.0f / (float)frameCount;
for (int i = 0; i != frameCount; ++i)
{
Vector2Int frameStart = new Vector2Int(
framePixelSize * (i % frameCols),
framePixelSize * (i / frameCols)
);
float currentProgress = (float)i * frameProgress;
DrawFrame(tex, frameStart, framePixelSize, maskPainter, currentProgress);
}
tex.Apply();
}
private static void DrawFrame(Texture2D tex, Vector2Int frameStart, int framePixelSize, MaskFramePainter maskPainter, float progress)
{
float onePixelRelativeToFrameSize = 1.0f / framePixelSize;
for (int y = 0; y != framePixelSize; ++y)
{
for (int x = 0; x != framePixelSize; ++x)
{
Color color = maskPainter(
new Vector2(x * onePixelRelativeToFrameSize, y * onePixelRelativeToFrameSize),
progress
) ? Color.white : Color.black;
tex.SetPixel(frameStart.x + x, frameStart.y + y, color);
}
}
}
