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[unity] AttachmentTools for Texture2D

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John 2017-04-19 15:44:20 +08:00 committed by GitHub
parent 3ec6c85074
commit e86c93fced
1 changed files with 70 additions and 0 deletions
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70
spine-unity/Assets/spine-unity/Modules/AttachmentTools/AttachmentTools.cs
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@ -203,6 +203,65 @@ namespace Spine.Unity.Modules.AttachmentTools {
public static class SpriteAtlasRegionExtensions {
internal const TextureFormat SpineTextureFormat = TextureFormat.RGBA32;
internal const bool UseMipMaps = false;
internal const float DefaultScale = 0.01f;
public static AtlasRegion ToAtlasRegion (this Texture2D t, Shader shader, float scale = DefaultScale) {
var material = new Material(shader);
material.mainTexture = t;
var page = material.ToSpineAtlasPage();
float width = t.width;
float height = t.height;
var region = new AtlasRegion();
region.name = t.name;
region.index = -1;
region.rotate = false;
// World space units
Vector2 boundsMin = Vector2.zero, boundsMax = new Vector2(width, height) * scale;
// Texture space/pixel units
region.width = (int)width;
region.originalWidth = (int)width;
region.height = (int)height;
region.originalHeight = (int)height;
region.offsetX = width * (0.5f - InverseLerp(boundsMin.x, boundsMax.x, 0));
region.offsetY = height * (0.5f - InverseLerp(boundsMin.y, boundsMax.y, 0));
// Use the full area of the texture.
region.u = 0;
region.v = 1;
region.u2 = 1;
region.v2 = 0;
region.x = 0;
region.y = 0;
region.page = page;
return region;
}
/// <summary>
/// Creates a Spine.AtlasRegion that uses a premultiplied alpha duplicate of the Sprite's texture data.</summary>
public static AtlasRegion ToAtlasRegionPMAClone (this Texture2D t, Shader shader, TextureFormat textureFormat = SpineTextureFormat, bool mipmaps = UseMipMaps) {
var material = new Material(shader);
var newTexture = t.GetClone(false, textureFormat, mipmaps);
newTexture.ApplyPMA(true);
newTexture.name = t.name + "-pma-";
material.name = t.name + shader.name;
material.mainTexture = newTexture;
var page = material.ToSpineAtlasPage();
var region = newTexture.ToAtlasRegion(shader);
region.page = page;
return region;
}
/// <summary>
/// Creates a new Spine.AtlasPage from a UnityEngine.Material. If the material has a preassigned texture, the page width and height will be set.</summary>
@ -406,6 +465,17 @@ namespace Spine.Unity.Modules.AttachmentTools {
return newTexture;
}
static Texture2D GetClone (this Texture2D t, bool applyImmediately = true, TextureFormat textureFormat = SpineTextureFormat, bool mipmaps = UseMipMaps) {
var spritePixels = t.GetPixels(0, 0, (int)t.width, (int)t.height);
var newTexture = new Texture2D((int)t.width, (int)t.height, textureFormat, mipmaps);
newTexture.SetPixels(spritePixels);
if (applyImmediately)
newTexture.Apply();
return newTexture;
}
static bool IsRenderable (Attachment a) {
return a is RegionAttachment || a is MeshAttachment;
}