8 [AddComponentMenu(
"UI/Effects/Extensions/SoftMaskScript")]
13 Canvas cachedCanvas =
null;
14 Transform cachedCanvasTransform =
null;
15 readonly Vector3[] m_WorldCorners =
new Vector3[4];
16 readonly Vector3[] m_CanvasCorners =
new Vector3[4];
18 [Tooltip(
"The area that is to be used as the container.")]
21 [Tooltip(
"Texture to be used to do the soft alpha")]
24 [Tooltip(
"At what point to apply the alpha min range 0-1")]
28 [Tooltip(
"Implement a hard blend based on the Cutoff")]
31 [Tooltip(
"Flip the masks alpha value")]
34 [Tooltip(
"If a different Mask Scaling Rect is given, and this value is true, the area around the mask will not be clipped")]
37 Vector2 maskOffset = Vector2.zero;
38 Vector2 maskScale = Vector2.one;
45 MaskArea = GetComponent<RectTransform>();
48 var text = GetComponent<Text>();
51 mat =
new Material(Shader.Find(
"UI Extensions/SoftMaskShader"));
53 cachedCanvas = text.canvas;
54 cachedCanvasTransform = cachedCanvas.transform;
57 if (transform.parent.GetComponent<Mask>() ==
null)
58 transform.parent.gameObject.AddComponent<Mask>();
60 transform.parent.GetComponent<Mask>().enabled =
false;
64 var graphic = GetComponent<Graphic>();
67 mat =
new Material(Shader.Find(
"UI Extensions/SoftMaskShader"));
68 graphic.material = mat;
69 cachedCanvas = graphic.canvas;
70 cachedCanvasTransform = cachedCanvas.transform;
76 if (cachedCanvas !=
null)
85 var size = worldRect.size;
86 maskScale.Set(1.0f / size.x, 1.0f / size.y);
87 maskOffset = -worldRect.min;
88 maskOffset.Scale(maskScale);
90 mat.SetTextureOffset(
"_AlphaMask", maskOffset);
91 mat.SetTextureScale(
"_AlphaMask", maskScale);
94 mat.SetFloat(
"_HardBlend",
HardBlend ? 1 : 0);
97 mat.SetFloat(
"_CutOff",
CutOff);
102 if (cachedCanvas ==
null)
105 MaskArea.GetWorldCorners(m_WorldCorners);
106 for (
int i = 0; i < 4; ++i)
107 m_CanvasCorners[i] = cachedCanvasTransform.InverseTransformPoint(m_WorldCorners[i]);
109 return new Rect(m_CanvasCorners[0].x, m_CanvasCorners[0].y, m_CanvasCorners[2].x - m_CanvasCorners[0].x, m_CanvasCorners[2].y - m_CanvasCorners[0].y);
bool DontClipMaskScalingRect
Credit Erdener Gonenc - @PixelEnvision.