static void Color_RGBToHSV(JNIEnv* env, jobject, int red, int green, int blue, jfloatArray hsvArray)
{
SkScalar hsv[3];
SkRGBToHSV(red, green, blue, hsv);
AutoJavaFloatArray autoHSV(env, hsvArray, 3);
float* values = autoHSV.ptr();
for (int i = 0; i < 3; i++) {
values[i] = SkScalarToFloat(hsv[i]);
}
}
void draw(SkCanvas* canvas) {
canvas->drawBitmap(source, 0, 0);
SkPaint bgPaint;
bgPaint.setColor(0xafffffff);
canvas->drawRect({20, 30, 110, 90}, bgPaint);
SkScalar hsv[3];
SkColor c = source.getColor(226, 128);
SkRGBToHSV(SkColorGetR(c), SkColorGetG(c), SkColorGetB(c), hsv);
canvas->drawString(("h: " + std::to_string(hsv[0]).substr(0, 6)).c_str(), 27, 45, SkPaint());
canvas->drawString(("s: " + std::to_string(hsv[1]).substr(0, 6)).c_str(), 27, 65, SkPaint());
canvas->drawString(("v: " + std::to_string(hsv[2]).substr(0, 6)).c_str(), 27, 85, SkPaint());
canvas->drawLine(110, 90, 226, 128, SkPaint());
}