[ts][webgl] Slot range rendering in SkeletonRenderer and SceneRenderer. Closes #1083

CHANGELOG.md

@@ -242,6 +242,7 @@
  * Added two color tinting support, enabled by default. You can disable it via the constructors of `SceneRenderer`, `SkeletonRenderer`and `PolygonBatcher`. Note that you will need to use a shader created via `Shader.newTwoColoredTexturedShader` shader with `SkeletonRenderer` and `PolygonBatcher` if two color tinting is enabled.
  * Added clipping support
  * Added `VertexEffect` interface, instances of which can be set on `SkeletonRenderer`. Allows to modify vertices before submitting them to GPU. See `SwirlEffect`, `JitterEffect`, and the example which allows to set effects.
+ * Added `slotRangeStart` and `slotRangeEnd` parameters to `SkeletonRenderer#draw` and `SceneRenderer#drawSkeleton`. This allows you to render only a range of slots in the draw order. See `spine-ts/webgl/tests/test-slot-range.html` for an example.
 
 ### Canvas backend
  * Fixed renderer to work for 3.6 changes. Sadly, we can't support two color tinting via the Canvas API.

spine-ts/build/spine-all.d.ts

@@ -1490,7 +1490,7 @@ declare module spine.webgl {
 		private WHITE;
 		constructor(canvas: HTMLCanvasElement, context: ManagedWebGLRenderingContext | WebGLRenderingContext, twoColorTint?: boolean);
 		begin(): void;
-		drawSkeleton(skeleton: Skeleton, premultipliedAlpha?: boolean): void;
+		drawSkeleton(skeleton: Skeleton, premultipliedAlpha?: boolean, slotRangeStart?: number, slotRangeEnd?: number): void;
 		drawSkeletonDebug(skeleton: Skeleton, premultipliedAlpha?: boolean, ignoredBones?: Array<string>): void;
 		drawTexture(texture: GLTexture, x: number, y: number, width: number, height: number, color?: Color): void;
 		drawTextureUV(texture: GLTexture, x: number, y: number, width: number, height: number, u: number, v: number, u2: number, v2: number, color?: Color): void;
@@ -1649,7 +1649,7 @@ declare module spine.webgl {
 		private temp3;
 		private temp4;
 		constructor(context: ManagedWebGLRenderingContext, twoColorTint?: boolean);
-		draw(batcher: PolygonBatcher, skeleton: Skeleton): void;
+		draw(batcher: PolygonBatcher, skeleton: Skeleton, slotRangeStart?: number, slotRangeEnd?: number): void;
 	}
 }
 declare module spine.webgl {

spine-ts/build/spine-all.js

@@ -7874,11 +7874,13 @@ var spine;
 				this.camera.update();
 				this.enableRenderer(this.batcher);
 			};
-			SceneRenderer.prototype.drawSkeleton = function (skeleton, premultipliedAlpha) {
+			SceneRenderer.prototype.drawSkeleton = function (skeleton, premultipliedAlpha, slotRangeStart, slotRangeEnd) {
 				if (premultipliedAlpha === void 0) { premultipliedAlpha = false; }
+				if (slotRangeStart === void 0) { slotRangeStart = -1; }
+				if (slotRangeEnd === void 0) { slotRangeEnd = -1; }
 				this.enableRenderer(this.batcher);
 				this.skeletonRenderer.premultipliedAlpha = premultipliedAlpha;
-				this.skeletonRenderer.draw(this.batcher, skeleton);
+				this.skeletonRenderer.draw(this.batcher, skeleton, slotRangeStart, slotRangeEnd);
 			};
 			SceneRenderer.prototype.drawSkeletonDebug = function (skeleton, premultipliedAlpha, ignoredBones) {
 				if (premultipliedAlpha === void 0) { premultipliedAlpha = false; }
@@ -9027,7 +9029,9 @@ var spine;
 					this.vertexSize += 4;
 				this.vertices = spine.Utils.newFloatArray(this.vertexSize * 1024);
 			}
-			SkeletonRenderer.prototype.draw = function (batcher, skeleton) {
+			SkeletonRenderer.prototype.draw = function (batcher, skeleton, slotRangeStart, slotRangeEnd) {
+				if (slotRangeStart === void 0) { slotRangeStart = -1; }
+				if (slotRangeEnd === void 0) { slotRangeEnd = -1; }
 				var clipper = this.clipper;
 				var premultipliedAlpha = this.premultipliedAlpha;
 				var twoColorTint = this.twoColorTint;
@@ -9043,9 +9047,22 @@ var spine;
 				var attachmentColor = null;
 				var skeletonColor = skeleton.color;
 				var vertexSize = twoColorTint ? 12 : 8;
+				var inRange = false;
+				if (slotRangeStart == -1)
+					inRange = true;
 				for (var i = 0, n = drawOrder.length; i < n; i++) {
 					var clippedVertexSize = clipper.isClipping() ? 2 : vertexSize;
 					var slot = drawOrder[i];
+					if (slotRangeStart >= 0 && slotRangeStart == slot.data.index) {
+						inRange = true;
+					}
+					if (!inRange) {
+						clipper.clipEndWithSlot(slot);
+						continue;
+					}
+					if (slotRangeEnd >= 0 && slotRangeEnd == slot.data.index) {
+						inRange = false;
+					}
 					var attachment = slot.getAttachment();
 					var texture = null;
 					if (attachment instanceof spine.RegionAttachment) {

spine-ts/build/spine-webgl.d.ts

@@ -1459,7 +1459,7 @@ declare module spine.webgl {
 		private WHITE;
 		constructor(canvas: HTMLCanvasElement, context: ManagedWebGLRenderingContext | WebGLRenderingContext, twoColorTint?: boolean);
 		begin(): void;
-		drawSkeleton(skeleton: Skeleton, premultipliedAlpha?: boolean): void;
+		drawSkeleton(skeleton: Skeleton, premultipliedAlpha?: boolean, slotRangeStart?: number, slotRangeEnd?: number): void;
 		drawSkeletonDebug(skeleton: Skeleton, premultipliedAlpha?: boolean, ignoredBones?: Array<string>): void;
 		drawTexture(texture: GLTexture, x: number, y: number, width: number, height: number, color?: Color): void;
 		drawTextureUV(texture: GLTexture, x: number, y: number, width: number, height: number, u: number, v: number, u2: number, v2: number, color?: Color): void;
@@ -1618,7 +1618,7 @@ declare module spine.webgl {
 		private temp3;
 		private temp4;
 		constructor(context: ManagedWebGLRenderingContext, twoColorTint?: boolean);
-		draw(batcher: PolygonBatcher, skeleton: Skeleton): void;
+		draw(batcher: PolygonBatcher, skeleton: Skeleton, slotRangeStart?: number, slotRangeEnd?: number): void;
 	}
 }
 declare module spine.webgl {

spine-ts/build/spine-webgl.js

@@ -7619,11 +7619,13 @@ var spine;
 				this.camera.update();
 				this.enableRenderer(this.batcher);
 			};
-			SceneRenderer.prototype.drawSkeleton = function (skeleton, premultipliedAlpha) {
+			SceneRenderer.prototype.drawSkeleton = function (skeleton, premultipliedAlpha, slotRangeStart, slotRangeEnd) {
 				if (premultipliedAlpha === void 0) { premultipliedAlpha = false; }
+				if (slotRangeStart === void 0) { slotRangeStart = -1; }
+				if (slotRangeEnd === void 0) { slotRangeEnd = -1; }
 				this.enableRenderer(this.batcher);
 				this.skeletonRenderer.premultipliedAlpha = premultipliedAlpha;
-				this.skeletonRenderer.draw(this.batcher, skeleton);
+				this.skeletonRenderer.draw(this.batcher, skeleton, slotRangeStart, slotRangeEnd);
 			};
 			SceneRenderer.prototype.drawSkeletonDebug = function (skeleton, premultipliedAlpha, ignoredBones) {
 				if (premultipliedAlpha === void 0) { premultipliedAlpha = false; }
@@ -8772,7 +8774,9 @@ var spine;
 					this.vertexSize += 4;
 				this.vertices = spine.Utils.newFloatArray(this.vertexSize * 1024);
 			}
-			SkeletonRenderer.prototype.draw = function (batcher, skeleton) {
+			SkeletonRenderer.prototype.draw = function (batcher, skeleton, slotRangeStart, slotRangeEnd) {
+				if (slotRangeStart === void 0) { slotRangeStart = -1; }
+				if (slotRangeEnd === void 0) { slotRangeEnd = -1; }
 				var clipper = this.clipper;
 				var premultipliedAlpha = this.premultipliedAlpha;
 				var twoColorTint = this.twoColorTint;
@@ -8788,9 +8792,22 @@ var spine;
 				var attachmentColor = null;
 				var skeletonColor = skeleton.color;
 				var vertexSize = twoColorTint ? 12 : 8;
+				var inRange = false;
+				if (slotRangeStart == -1)
+					inRange = true;
 				for (var i = 0, n = drawOrder.length; i < n; i++) {
 					var clippedVertexSize = clipper.isClipping() ? 2 : vertexSize;
 					var slot = drawOrder[i];
+					if (slotRangeStart >= 0 && slotRangeStart == slot.data.index) {
+						inRange = true;
+					}
+					if (!inRange) {
+						clipper.clipEndWithSlot(slot);
+						continue;
+					}
+					if (slotRangeEnd >= 0 && slotRangeEnd == slot.data.index) {
+						inRange = false;
+					}
 					var attachment = slot.getAttachment();
 					var texture = null;
 					if (attachment instanceof spine.RegionAttachment) {

spine-ts/build/spine-widget.d.ts

@@ -1459,7 +1459,7 @@ declare module spine.webgl {
 		private WHITE;
 		constructor(canvas: HTMLCanvasElement, context: ManagedWebGLRenderingContext | WebGLRenderingContext, twoColorTint?: boolean);
 		begin(): void;
-		drawSkeleton(skeleton: Skeleton, premultipliedAlpha?: boolean): void;
+		drawSkeleton(skeleton: Skeleton, premultipliedAlpha?: boolean, slotRangeStart?: number, slotRangeEnd?: number): void;
 		drawSkeletonDebug(skeleton: Skeleton, premultipliedAlpha?: boolean, ignoredBones?: Array<string>): void;
 		drawTexture(texture: GLTexture, x: number, y: number, width: number, height: number, color?: Color): void;
 		drawTextureUV(texture: GLTexture, x: number, y: number, width: number, height: number, u: number, v: number, u2: number, v2: number, color?: Color): void;
@@ -1618,7 +1618,7 @@ declare module spine.webgl {
 		private temp3;
 		private temp4;
 		constructor(context: ManagedWebGLRenderingContext, twoColorTint?: boolean);
-		draw(batcher: PolygonBatcher, skeleton: Skeleton): void;
+		draw(batcher: PolygonBatcher, skeleton: Skeleton, slotRangeStart?: number, slotRangeEnd?: number): void;
 	}
 }
 declare module spine.webgl {

spine-ts/build/spine-widget.js

@@ -7619,11 +7619,13 @@ var spine;
 				this.camera.update();
 				this.enableRenderer(this.batcher);
 			};
-			SceneRenderer.prototype.drawSkeleton = function (skeleton, premultipliedAlpha) {
+			SceneRenderer.prototype.drawSkeleton = function (skeleton, premultipliedAlpha, slotRangeStart, slotRangeEnd) {
 				if (premultipliedAlpha === void 0) { premultipliedAlpha = false; }
+				if (slotRangeStart === void 0) { slotRangeStart = -1; }
+				if (slotRangeEnd === void 0) { slotRangeEnd = -1; }
 				this.enableRenderer(this.batcher);
 				this.skeletonRenderer.premultipliedAlpha = premultipliedAlpha;
-				this.skeletonRenderer.draw(this.batcher, skeleton);
+				this.skeletonRenderer.draw(this.batcher, skeleton, slotRangeStart, slotRangeEnd);
 			};
 			SceneRenderer.prototype.drawSkeletonDebug = function (skeleton, premultipliedAlpha, ignoredBones) {
 				if (premultipliedAlpha === void 0) { premultipliedAlpha = false; }
@@ -8772,7 +8774,9 @@ var spine;
 					this.vertexSize += 4;
 				this.vertices = spine.Utils.newFloatArray(this.vertexSize * 1024);
 			}
-			SkeletonRenderer.prototype.draw = function (batcher, skeleton) {
+			SkeletonRenderer.prototype.draw = function (batcher, skeleton, slotRangeStart, slotRangeEnd) {
+				if (slotRangeStart === void 0) { slotRangeStart = -1; }
+				if (slotRangeEnd === void 0) { slotRangeEnd = -1; }
 				var clipper = this.clipper;
 				var premultipliedAlpha = this.premultipliedAlpha;
 				var twoColorTint = this.twoColorTint;
@@ -8788,9 +8792,22 @@ var spine;
 				var attachmentColor = null;
 				var skeletonColor = skeleton.color;
 				var vertexSize = twoColorTint ? 12 : 8;
+				var inRange = false;
+				if (slotRangeStart == -1)
+					inRange = true;
 				for (var i = 0, n = drawOrder.length; i < n; i++) {
 					var clippedVertexSize = clipper.isClipping() ? 2 : vertexSize;
 					var slot = drawOrder[i];
+					if (slotRangeStart >= 0 && slotRangeStart == slot.data.index) {
+						inRange = true;
+					}
+					if (!inRange) {
+						clipper.clipEndWithSlot(slot);
+						continue;
+					}
+					if (slotRangeEnd >= 0 && slotRangeEnd == slot.data.index) {
+						inRange = false;
+					}
 					var attachment = slot.getAttachment();
 					var texture = null;
 					if (attachment instanceof spine.RegionAttachment) {

spine-ts/webgl/example/assets/spineboy.atlas

@@ -1,5 +1,5 @@
 
-spineboy.png
+spineboy-pma.png
 size: 1024,512
 format: RGBA8888
 filter: Linear,Linear

spine-ts/webgl/src/SceneRenderer.ts

@@ -68,10 +68,10 @@ module spine.webgl {
 			this.enableRenderer(this.batcher);
 		}
 
-		drawSkeleton (skeleton: Skeleton, premultipliedAlpha = false) {
+		drawSkeleton (skeleton: Skeleton, premultipliedAlpha = false, slotRangeStart = -1, slotRangeEnd = -1) {
 			this.enableRenderer(this.batcher);
 			this.skeletonRenderer.premultipliedAlpha = premultipliedAlpha;
-			this.skeletonRenderer.draw(this.batcher, skeleton);
+			this.skeletonRenderer.draw(this.batcher, skeleton, slotRangeStart, slotRangeEnd);
 		}
 
 		drawSkeletonDebug(skeleton: Skeleton, premultipliedAlpha = false, ignoredBones: Array<string> = null) {

spine-ts/webgl/src/SkeletonRenderer.ts

@@ -57,7 +57,7 @@ module spine.webgl {
 			this.vertices = Utils.newFloatArray(this.vertexSize * 1024);
 		}
 
-		draw (batcher: PolygonBatcher, skeleton: Skeleton) {
+		draw (batcher: PolygonBatcher, skeleton: Skeleton, slotRangeStart: number = -1, slotRangeEnd: number = -1) {
 			let clipper = this.clipper;
 			let premultipliedAlpha = this.premultipliedAlpha;
 			let twoColorTint = this.twoColorTint;
@@ -75,9 +75,25 @@ module spine.webgl {
 			let attachmentColor: Color = null;
 			let skeletonColor = skeleton.color;
 			let vertexSize = twoColorTint ? 12 : 8;
+			let inRange = false;
+			if (slotRangeStart == -1) inRange = true;
 			for (let i = 0, n = drawOrder.length; i < n; i++) {
 				let clippedVertexSize = clipper.isClipping() ? 2 : vertexSize;
 				let slot = drawOrder[i];
+
+				if (slotRangeStart >= 0 && slotRangeStart == slot.data.index) {
+					inRange = true;
+				}
+
+				if (!inRange) {
+					clipper.clipEndWithSlot(slot);
+					continue;
+				}
+
+				if (slotRangeEnd >= 0 && slotRangeEnd == slot.data.index) {
+					inRange = false;
+				}
+
 				let attachment = slot.getAttachment();
 				let texture: GLTexture = null;
 				if (attachment instanceof RegionAttachment) {

spine-ts/webgl/tests/test-atlas-loading.html

@@ -7,7 +7,7 @@
 var canvas = document.getElementsByTagName("canvas")[0];
 canvas.width = canvas.clientWidth; canvas.height = canvas.clientHeight;
 var context = new spine.webgl.ManagedWebGLRenderingContext(canvas);
-var assetManager = new spine.webgl.AssetManager(context, "https://esotericsoftware.com/sketch/files/4772/");
+var assetManager = new spine.webgl.AssetManager(context, "../example/assets/");
 var renderer = new spine.webgl.SceneRenderer(canvas, context);
 var time = new spine.TimeKeeper();
 var loadingScreen = new spine.webgl.LoadingScreen(new spine.webgl.SceneRenderer(canvas, context));
@@ -15,16 +15,16 @@ var loadingScreen = new spine.webgl.LoadingScreen(new spine.webgl.SceneRenderer(
 var skeleton = null;
 var animationState = null;
 
-assetManager.loadText("Spineboy/spineboy-pro.json");
-assetManager.loadTextureAtlas("Spineboy/spineboy-pro.atlas");
+assetManager.loadText("spineboy-ess.json");
+assetManager.loadTextureAtlas("spineboy.atlas");
 
 requestAnimationFrame(load);
 
 function load () {
     if (assetManager.isLoadingComplete()) {
-        var atlas = assetManager.get("Spineboy/spineboy-pro.atlas");
+        var atlas = assetManager.get("spineboy.atlas");
         var skeletonJson = new spine.SkeletonJson(new spine.AtlasAttachmentLoader(atlas));
-        var skeletonData = skeletonJson.readSkeletonData(assetManager.get("Spineboy/spineboy-pro.json"));
+        var skeletonData = skeletonJson.readSkeletonData(assetManager.get("spineboy-ess.json"));
         var animationStateData = new spine.AnimationStateData(skeletonData);
 
         skeleton = new spine.Skeleton(skeletonData);

spine-ts/webgl/tests/test-slot-range.html

@@ -0,0 +1,114 @@
+<html>
+<body>
+	<script src="../../build/spine-webgl.js"></script>
+	<canvas width="640" height="480"></canvas>
+</body>
+<script>
+/*
+	This test illustrates how to render one skeleton in the
+	middle of rendering another skeleton. This technique can
+	be used to e.g. render different weapons on a character that
+	are themselves animated.
+*/
+var canvas = document.getElementsByTagName("canvas")[0];
+canvas.width = canvas.clientWidth; canvas.height = canvas.clientHeight;
+var context = new spine.webgl.ManagedWebGLRenderingContext(canvas);
+var assetManager = new spine.webgl.AssetManager(context, "../example/assets/");
+var renderer = new spine.webgl.SceneRenderer(canvas, context);
+var time = new spine.TimeKeeper();
+var loadingScreen = new spine.webgl.LoadingScreen(new spine.webgl.SceneRenderer(canvas, context));
+
+var spineBoy;
+var vine;
+
+assetManager.loadText("spineboy-ess.json");
+assetManager.loadTextureAtlas("spineboy.atlas");
+
+assetManager.loadText("vine-pro.json");
+assetManager.loadTextureAtlas("vine.atlas");
+
+requestAnimationFrame(load);
+
+function loadSkeleton(json, atlas, scale) {
+	var atlas = assetManager.get(atlas);
+	var skeletonJson = new spine.SkeletonJson(new spine.AtlasAttachmentLoader(atlas));
+	skeletonJson.scale = scale;
+	var skeletonData = skeletonJson.readSkeletonData(assetManager.get(json));
+	var animationStateData = new spine.AnimationStateData(skeletonData);
+
+	skeleton = new spine.Skeleton(skeletonData);
+	animationState = new spine.AnimationState(animationStateData);
+
+	return { skeleton: skeleton, animationState: animationState };
+}
+
+function load () {
+    if (assetManager.isLoadingComplete()) {
+		spineBoy = loadSkeleton("spineboy-ess.json", "spineboy.atlas", 1);
+		vine = loadSkeleton("vine-pro.json", "vine.atlas", 0.3);
+
+
+        var offset = new spine.Vector2();
+        var size = new spine.Vector2();
+        spineBoy.skeleton.updateWorldTransform();
+        spineBoy.skeleton.getBounds(offset, size, []);
+        renderer.camera.position.x = offset.x + size.x / 2;
+        renderer.camera.position.y = offset.y + size.y / 2;
+        renderer.camera.zoom = size.x > size.y ? size.x / canvas.width : size.y / canvas.height;
+
+		spineBoy.animationState.setAnimation(0, "walk", true);
+		vine.animationState.setAnimation(0, "grow", true);
+
+        requestAnimationFrame(render);
+    } else {
+        loadingScreen.draw(false);
+        requestAnimationFrame(load);
+    }
+}
+
+function render () {
+    context.gl.clearColor(0.9, 0.9, 0.9, 1);
+    context.gl.clear(context.gl.COLOR_BUFFER_BIT);
+
+	time.update();
+
+	// Update Spineboy first
+    spineBoy.animationState.update(time.delta);
+    spineBoy.animationState.apply(spineBoy.skeleton);
+	spineBoy.skeleton.updateWorldTransform();
+
+	// Next figure out the world location of the bone
+	// we attach the vine to, and apply it to the vine's
+	// root bone. Note that the root bone must not be
+	// keyed! We also ignore scaling and shearing.
+	var gun = spineBoy.skeleton.findBone("gun");
+	var vineRoot = vine.skeleton.getRootBone();
+	vineRoot.x = gun.worldX;
+	vineRoot.y = gun.worldY;
+	vineRoot.rotation = gun.getWorldRotationX();
+	vine.animationState.update(time.delta);
+	vine.animationState.apply(vine.skeleton);
+	vine.skeleton.updateWorldTransform();
+
+	// Find the two slots inbetween we want to render the vine
+	var gunSlot = spineBoy.skeleton.findSlot("gun");
+	var rearFoot = spineBoy.skeleton.findSlot("rear-foot");
+
+	renderer.begin();
+	// render from the back most slot (-1) to the gun slot (inclusive)
+	renderer.drawSkeleton(spineBoy.skeleton, true, -1, gunSlot.data.index);
+
+	// now render the vine
+	renderer.drawSkeleton(vine.skeleton, false);
+
+	// finally render the remaining spineboy slots starting at the rear foot
+	// (the next slot after the gun)
+	renderer.drawSkeleton(spineBoy.skeleton, true, rearFoot.data.index, -1);
+    renderer.end();
+
+    loadingScreen.draw(true);
+
+    requestAnimationFrame(render);
+}
+</script>
+</html>