static void drawShadowFull(Canvas canvas, Path path, Vector3 zPlaneParams, Vector3 devLightPos,
float lightRadius, uiColor ambientColor, uiColor spotColor, int flags)
{
Matrix3 viewMatrix = canvas.getTotalMatrix();
//ambient light
_devSpacePath.resetAll();
_devSpacePath.addPath(path, viewMatrix);
float devSpaceOutset = ambientBlurRadius(zPlaneParams.z);
float oneOverA = ambientRecipAlpha(zPlaneParams.z);
float blurRadius = 0.5f * devSpaceOutset * oneOverA;
float strokeWidth = 0.5f * (devSpaceOutset - blurRadius);
//Paint paint = new Paint {color = ambientColor, strokeWidth = strokeWidth, style = PaintingStyle.fill};
_shadowPaint.color = new Color(ambientColor.value);
_shadowPaint.strokeWidth = strokeWidth;
_shadowPaint.style = PaintingStyle.fill;
canvas.save();
_shadowMatrix.reset();
canvas.setMatrix(_shadowMatrix);
float sigma = convertRadiusToSigma(blurRadius);
_shadowPaint.maskFilter = MaskFilter.blur(BlurStyle.normal, sigma);
canvas.drawPath(_devSpacePath, _shadowPaint);
canvas.restore();
//spot light
//Matrix3 shadowMatrix = Matrix3.I();
float radius = 0.0f;
if (!getSpotShadowTransform(devLightPos, lightRadius, viewMatrix, zPlaneParams, path.getBounds(),
_shadowMatrix, ref radius))
{
return;
}
canvas.save();
canvas.setMatrix(_shadowMatrix);
_shadowPaint.color = new Color(spotColor.value);
_shadowPaint.strokeWidth = 0;
_shadowPaint.style = PaintingStyle.fill;
float sigma2 = convertRadiusToSigma(radius);
_shadowPaint.maskFilter = MaskFilter.blur(BlurStyle.normal, sigma2);
canvas.drawPath(path, _shadowPaint);
canvas.restore();
_shadowPaint.maskFilter = null;
}
public static void drawShadow(Canvas canvas, Path path, Vector3 zPlaneParams, Vector3 devLightPos,
float lightRadius, Color ambientColor, Color spotColor, int flags)
{
if (!_drawShadowFlag)
{
return;
}
Matrix3 viewMatrix = canvas.getTotalMatrix();
//ambient light
Path devSpacePath = path.transform(viewMatrix);
float devSpaceOutset = ambientBlurRadius(zPlaneParams.z);
float oneOverA = ambientRecipAlpha(zPlaneParams.z);
float blurRadius = 0.5f * devSpaceOutset * oneOverA;
float strokeWidth = 0.5f * (devSpaceOutset - blurRadius);
Paint paint = new Paint {
color = ambientColor, strokeWidth = strokeWidth, style = PaintingStyle.fill
};
canvas.save();
canvas.setMatrix(Matrix3.I());
float sigma = convertRadiusToSigma(blurRadius);
paint.maskFilter = MaskFilter.blur(BlurStyle.normal, sigma);
canvas.drawPath(devSpacePath, paint);
canvas.restore();
//spot light
Matrix3 shadowMatrix = Matrix3.I();
float radius = 0.0f;
if (!getSpotShadowTransform(devLightPos, lightRadius, viewMatrix, zPlaneParams, path.getBounds(),
shadowMatrix, ref radius))
{
return;
}
canvas.save();
canvas.setMatrix(shadowMatrix);
Paint paint2 = new Paint {
color = spotColor
};
float sigma2 = convertRadiusToSigma(radius);
paint2.maskFilter = MaskFilter.blur(BlurStyle.normal, sigma2);
canvas.drawPath(path, paint2);
canvas.restore();
}
static void drawShadowFast(Canvas canvas, Path path, Vector3 zPlaneParams, Vector3 devLightPos,
float lightRadius, uiColor ambientColor, uiColor spotColor, int flags)
{
Matrix3 viewMatrix = canvas.getTotalMatrix();
//debug shadow
#pragma warning disable CS0162
if (debugShadow)
{
var isRRect = path.isNaiveRRect;
if (isRRect)
{
ambientColor = uiColor.fromColor(Colors.red);
spotColor = uiColor.fromColor(Colors.red);
}
else
{
ambientColor = uiColor.fromColor(Colors.green);
spotColor = uiColor.fromColor(Colors.green);
}
}
#pragma warning restore CS0162
//ambient light
float devSpaceOutset = ambientBlurRadius(zPlaneParams.z);
float oneOverA = ambientRecipAlpha(zPlaneParams.z);
float blurRadius = 0.5f * devSpaceOutset * oneOverA;
float strokeWidth = 0.5f * (devSpaceOutset - blurRadius);
_shadowPaint.color = new Color(ambientColor.value);
_shadowPaint.strokeWidth = strokeWidth;
_shadowPaint.style = PaintingStyle.fill;
canvas.drawPath(path, _shadowPaint);
//spot light
float radius = 0.0f;
if (!getSpotShadowTransform(devLightPos, lightRadius, viewMatrix, zPlaneParams, path.getBounds(),
_shadowMatrix, ref radius))
{
return;
}
canvas.save();
canvas.setMatrix(_shadowMatrix);
_shadowPaint.color = new Color(spotColor.value);
_shadowPaint.strokeWidth = 0;
_shadowPaint.style = PaintingStyle.fill;
float sigma2 = convertRadiusToSigma(radius);
_shadowPaint.maskFilter = path.isNaiveRRect ? MaskFilter.fastShadow(sigma2) : MaskFilter.blur(BlurStyle.normal, sigma2);
canvas.drawPath(path, _shadowPaint);
canvas.restore();
_shadowPaint.maskFilter = null;
}
