342 lines
13 KiB
C#
342 lines
13 KiB
C#
using System;
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using System.Collections;
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using System.Collections.Generic;
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using System.Diagnostics;
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using System.IO;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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using SpineRuntime36;
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namespace SpineViewer.Spine.Implementations.Spine
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{
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[SpineImplementation(Version.V36)]
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internal class Spine36 : SpineViewer.Spine.Spine
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{
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private static readonly Animation EmptyAnimation = new(EMPTY_ANIMATION, [], 0);
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private class TextureLoader : SpineRuntime36.TextureLoader
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{
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public void Load(AtlasPage page, string path)
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{
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var texture = new SFML.Graphics.Texture(path);
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if (page.magFilter == TextureFilter.Linear)
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texture.Smooth = true;
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if (page.uWrap == TextureWrap.Repeat && page.vWrap == TextureWrap.Repeat)
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texture.Repeated = true;
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page.rendererObject = texture;
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page.width = (int)texture.Size.X;
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page.height = (int)texture.Size.Y;
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}
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public void Unload(object texture)
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{
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((SFML.Graphics.Texture)texture).Dispose();
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}
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}
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private static TextureLoader textureLoader = new();
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private Atlas atlas;
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private SkeletonBinary? skeletonBinary;
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private SkeletonJson? skeletonJson;
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private SkeletonData skeletonData;
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private AnimationStateData animationStateData;
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private Skeleton skeleton;
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private AnimationState animationState;
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private SkeletonClipping clipping = new();
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public Spine36(string skelPath, string? atlasPath = null) : base(skelPath, atlasPath)
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{
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atlas = new Atlas(AtlasPath, textureLoader);
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try
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{
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// 先尝试二进制文件
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skeletonJson = null;
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skeletonBinary = new SkeletonBinary(atlas);
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skeletonData = skeletonBinary.ReadSkeletonData(SkelPath);
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}
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catch
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{
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try
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{
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// 再尝试 Json 文件
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skeletonBinary = null;
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skeletonJson = new SkeletonJson(atlas);
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skeletonData = skeletonJson.ReadSkeletonData(SkelPath);
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}
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catch
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{
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// 都不行就报错
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throw new ArgumentException($"Unknown skeleton file format {SkelPath}");
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}
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}
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animationStateData = new AnimationStateData(skeletonData);
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skeleton = new Skeleton(skeletonData);
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animationState = new AnimationState(animationStateData);
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foreach (var anime in skeletonData.Animations)
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animationNames.Add(anime.Name);
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CurrentAnimation = DefaultAnimationName;
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}
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protected override void Dispose(bool disposing)
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{
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base.Dispose(disposing);
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atlas.Dispose();
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}
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public override string FileVersion { get => skeletonData.Version; }
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public override float Scale
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{
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get
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{
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if (skeletonBinary is not null)
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return skeletonBinary.Scale;
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else if (skeletonJson is not null)
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return skeletonJson.Scale;
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else
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return 1f;
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}
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set
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{
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// 保存状态
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var position = Position;
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var flipX = FlipX;
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var flipY = FlipY;
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var savedTrack0 = animationState.GetCurrent(0);
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var val = Math.Max(value, SCALE_MIN);
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if (skeletonBinary is not null)
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{
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skeletonBinary.Scale = val;
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skeletonData = skeletonBinary.ReadSkeletonData(SkelPath);
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}
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else if (skeletonJson is not null)
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{
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skeletonJson.Scale = val;
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skeletonData = skeletonJson.ReadSkeletonData(SkelPath);
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}
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// reload skel-dependent data
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animationStateData = new AnimationStateData(skeletonData) { DefaultMix = animationStateData.DefaultMix };
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skeleton = new Skeleton(skeletonData);
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animationState = new AnimationState(animationStateData);
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// 恢复状态
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Position = position;
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FlipX = flipX;
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FlipY = flipY;
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// 恢复原本 Track0 上所有动画
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if (savedTrack0 is not null)
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{
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var entry = animationState.SetAnimation(0, savedTrack0.Animation.Name, true);
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entry.TrackTime = savedTrack0.TrackTime;
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var savedEntry = savedTrack0.Next;
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while (savedEntry is not null)
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{
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entry = animationState.AddAnimation(0, savedEntry.Animation.Name, true, 0);
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entry.TrackTime = savedEntry.TrackTime;
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savedEntry = savedEntry.Next;
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}
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}
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}
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}
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public override PointF Position
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{
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get => new(skeleton.X, skeleton.Y);
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set
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{
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skeleton.X = value.X;
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skeleton.Y = value.Y;
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}
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}
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public override bool FlipX
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{
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get => skeleton.FlipX;
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set => skeleton.FlipX = value;
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}
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public override bool FlipY
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{
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get => skeleton.FlipY;
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set => skeleton.FlipY = value;
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}
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public override string CurrentAnimation
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{
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get => animationState.GetCurrent(0)?.Animation.Name ?? EMPTY_ANIMATION;
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set
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{
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if (value == EMPTY_ANIMATION)
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animationState.SetAnimation(0, EmptyAnimation, false);
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else if (animationNames.Contains(value))
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animationState.SetAnimation(0, value, true);
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Update(0);
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}
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}
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public override RectangleF Bounds
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{
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get
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{
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float[] _ = [];
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skeleton.GetBounds(out var x, out var y, out var w, out var h, ref _);
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return new RectangleF(x, y, w, h);
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}
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}
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public override float GetAnimationDuration(string name) { return skeletonData.FindAnimation(name)?.Duration ?? 0f; }
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public override void Update(float delta)
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{
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skeleton.Update(delta);
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animationState.Update(delta);
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animationState.Apply(skeleton);
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skeleton.UpdateWorldTransform();
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}
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private SFML.Graphics.BlendMode GetSFMLBlendMode(BlendMode spineBlendMode)
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{
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return spineBlendMode switch
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{
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BlendMode.Normal => BlendModeSFML.Normal,
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BlendMode.Additive => BlendModeSFML.Additive,
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BlendMode.Multiply => BlendModeSFML.Multiply,
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BlendMode.Screen => BlendModeSFML.Screen,
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_ => throw new NotImplementedException($"{spineBlendMode}"),
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};
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}
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public override void Draw(SFML.Graphics.RenderTarget target, SFML.Graphics.RenderStates states)
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{
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vertexArray.Clear();
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states.Texture = null;
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// 要用 DrawOrder 而不是 Slots
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foreach (var slot in skeleton.DrawOrder)
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{
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var attachment = slot.Attachment;
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SFML.Graphics.Texture texture;
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float[] worldVertices = worldVerticesBuffer; // 顶点世界坐标, 连续的 [x0, y0, x1, y1, ...] 坐标值
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int worldVerticesCount; // 等于顶点数组的长度除以 2
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int[] worldTriangleIndices; // 三角形索引, 从顶点坐标数组取的时候要乘以 2, 最大值是 worldVerticesCount - 1
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int worldTriangleIndicesLength; // 三角形索引数组长度
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float[] uvs; // 纹理坐标
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float tintR = skeleton.R * slot.R;
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float tintG = skeleton.G * slot.G;
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float tintB = skeleton.B * slot.B;
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float tintA = skeleton.A * slot.A;
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if (attachment is RegionAttachment regionAttachment)
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{
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texture = (SFML.Graphics.Texture)((AtlasRegion)regionAttachment.RendererObject).page.rendererObject;
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regionAttachment.ComputeWorldVertices(slot.Bone, worldVertices, 0);
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worldVerticesCount = 4;
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worldTriangleIndices = [0, 1, 2, 2, 3, 0];
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worldTriangleIndicesLength = 6;
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uvs = regionAttachment.UVs;
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tintR *= regionAttachment.R;
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tintG *= regionAttachment.G;
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tintB *= regionAttachment.B;
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tintA *= regionAttachment.A;
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}
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else if (attachment is MeshAttachment meshAttachment)
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{
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texture = (SFML.Graphics.Texture)((AtlasRegion)meshAttachment.RendererObject).page.rendererObject;
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if (meshAttachment.WorldVerticesLength > worldVertices.Length)
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worldVertices = worldVerticesBuffer = new float[meshAttachment.WorldVerticesLength * 2];
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meshAttachment.ComputeWorldVertices(slot, worldVertices);
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worldVerticesCount = meshAttachment.WorldVerticesLength / 2;
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worldTriangleIndices = meshAttachment.Triangles;
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worldTriangleIndicesLength = meshAttachment.Triangles.Length;
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uvs = meshAttachment.UVs;
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tintR *= meshAttachment.R;
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tintG *= meshAttachment.G;
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tintB *= meshAttachment.B;
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tintA *= meshAttachment.A;
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}
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else if (attachment is ClippingAttachment clippingAttachment)
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{
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clipping.ClipStart(slot, clippingAttachment);
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continue;
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}
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else
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{
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clipping.ClipEnd(slot);
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continue;
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}
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SFML.Graphics.BlendMode blendMode = GetSFMLBlendMode(slot.Data.BlendMode);
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states.Texture ??= texture;
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if (states.BlendMode != blendMode || states.Texture != texture)
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{
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if (vertexArray.VertexCount > 0)
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{
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if (UsePremultipliedAlpha && (states.BlendMode == BlendModeSFML.Normal || states.BlendMode == BlendModeSFML.Additive))
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states.Shader = FragmentShader;
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else
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states.Shader = null;
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target.Draw(vertexArray, states);
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vertexArray.Clear();
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}
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states.BlendMode = blendMode;
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states.Texture = texture;
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}
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if (clipping.IsClipping)
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{
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// 这里必须单独记录 Count, 和 Items 的 Length 是不一致的
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clipping.ClipTriangles(worldVertices, worldVerticesCount * 2, worldTriangleIndices, worldTriangleIndicesLength, uvs);
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worldVertices = clipping.ClippedVertices.Items;
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worldVerticesCount = clipping.ClippedVertices.Count / 2;
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worldTriangleIndices = clipping.ClippedTriangles.Items;
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worldTriangleIndicesLength = clipping.ClippedTriangles.Count;
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uvs = clipping.ClippedUVs.Items;
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}
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var textureSizeX = texture.Size.X;
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var textureSizeY = texture.Size.Y;
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SFML.Graphics.Vertex vertex = new();
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vertex.Color.R = (byte)(tintR * 255);
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vertex.Color.G = (byte)(tintG * 255);
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vertex.Color.B = (byte)(tintB * 255);
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vertex.Color.A = (byte)(tintA * 255);
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// 必须用 worldTriangleIndicesLength 不能直接 foreach
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for (int i = 0; i < worldTriangleIndicesLength; i++)
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{
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var index = worldTriangleIndices[i] * 2;
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vertex.Position.X = worldVertices[index];
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vertex.Position.Y = worldVertices[index + 1];
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vertex.TexCoords.X = uvs[index] * textureSizeX;
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vertex.TexCoords.Y = uvs[index + 1] * textureSizeY;
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vertexArray.Append(vertex);
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}
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clipping.ClipEnd(slot);
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}
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if (UsePremultipliedAlpha && (states.BlendMode == BlendModeSFML.Normal || states.BlendMode == BlendModeSFML.Additive))
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states.Shader = FragmentShader;
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else
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states.Shader = null;
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target.Draw(vertexArray, states);
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clipping.ClipEnd();
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}
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}
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}
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