public uiPaint(
uiColor?color = null,
BlendMode blendMode = BlendMode.srcOver,
PaintingStyle style = PaintingStyle.fill,
float strokeWidth = 0f,
StrokeCap strokeCap = StrokeCap.butt,
StrokeJoin strokeJoin = StrokeJoin.miter,
float strokeMiterLimit = 4.0f,
FilterMode filterMode = FilterMode.Bilinear,
uiColorFilter?colorFilter = null,
uiMaskFilter?maskFilter = null,
uiImageFilter backdrop = null,
PaintShader shader = null,
bool invertColors = false
)
{
this.color = color ?? _kColorDefault;
this.blendMode = blendMode;
this.style = style;
this.strokeWidth = strokeWidth;
this.strokeCap = strokeCap;
this.strokeJoin = strokeJoin;
this.strokeMiterLimit = strokeMiterLimit;
this.filterMode = filterMode;
this.colorFilter = colorFilter;
this.maskFilter = maskFilter;
this.backdrop = backdrop;
this.shader = shader;
this.invertColors = invertColors;
}
static Vector4 _colorToVector4(uiColor c)
{
return(new Vector4(
c.red / 255f,
c.green / 255f,
c.blue / 255f,
c.alpha / 255f
));
}
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;
}
public static void drawShadow(Canvas canvas, Path path, Vector3 zPlaneParams, Vector3 devLightPos,
float lightRadius, uiColor ambientColor, uiColor spotColor, int flags)
{
if (kUseFastShadow)
{
drawShadowFast(canvas, path, zPlaneParams, devLightPos, lightRadius, ambientColor, spotColor, flags);
}
else
{
drawShadowFull(canvas, path, zPlaneParams, devLightPos, lightRadius, ambientColor, spotColor, flags);
}
}
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 uiPaint(uiPaint paint)
{
this.color = paint.color;
this.blendMode = paint.blendMode;
this.style = paint.style;
this.strokeWidth = paint.strokeWidth;
this.strokeCap = paint.strokeCap;
this.strokeJoin = paint.strokeJoin;
this.strokeMiterLimit = paint.strokeMiterLimit;
this.filterMode = paint.filterMode;
this.colorFilter = paint.colorFilter;
this.maskFilter = paint.maskFilter;
this.backdrop = paint.backdrop;
this.shader = paint.shader;
this.invertColors = paint.invertColors;
}
static void drawShadowFast(Canvas canvas, Path path, Vector3 zPlaneParams, Vector3 devLightPos,
float lightRadius, uiColor ambientColor, uiColor spotColor, int flags)
{
Matrix3 viewMatrix = canvas.getTotalMatrix();
//ambient light
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.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);
//Paint paint2 = new Paint {color = spotColor};
_shadowPaint.color = new Color(spotColor.value);
_shadowPaint.strokeWidth = 0;
_shadowPaint.style = PaintingStyle.fill;
canvas.drawPath(path, _shadowPaint);
canvas.restore();
}
public static PictureFlusher.CmdDraw fastShadow(PictureFlusher.RenderLayer layer, uiMeshMesh mesh, float sigma,
bool isRect, bool isCircle, float corner, Vector4 bound, uiColor color)
{
Vector4 viewport = layer.viewport;
var mat = _shadowBox;
if (!isRect)
{
mat = _shadowRBox;
}
var props = ObjectPool <MaterialPropertyBlockWrapper> .alloc();
props.SetVector(_viewportId, viewport);
props.SetFloat(_shadowSigmaId, sigma);
props.SetVector(_shadowBoxId, bound);
props.SetVector(_shadowColorId, _colorToVector4(color));
if (!isRect)
{
props.SetFloat(_shadowCornerId, corner);
}
return(PictureFlusher.CmdDraw.create(
mesh: mesh,
pass: 0,
material: mat,
properties: props
));
}
public static uiColorFilter mode(uiColor color, BlendMode blendMode)
{
return(new uiColorFilter(color, blendMode));
}
uiColorFilter(uiColor color, BlendMode blendMode)
{
this.color = color;
this.blendMode = blendMode;
}
public static void computeTonalColors(uiColor inAmbientColor, uiColor inSpotColor,
ref uiColor?outAmbientColor, ref uiColor?outSpotColor)
{
outAmbientColor = uiColor.fromARGB(inAmbientColor.alpha, 0, 0, 0);
outSpotColor = inSpotColor;
}