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Skia Fiddle
Skia Version:
057a32
void draw(SkCanvas* canvas) { const float width = image->width(); const float height = image->height(); const SkPoint src[] = {{ 0, 0}, {width, 0}, {width * (float)frame, height * (float)frame}, { 0, height}}; const SkPoint dst[] = { {0, 0}, {width, 0}, {width, height}, {0, height} }; SkMatrix matrix; matrix.setPolyToPoly(src, dst, 4); SkAutoCanvasRestore acr(canvas, true); canvas->concat(matrix); canvas->drawImage(image, 0, 0); }
Skia API Documentation