mirror of
https://github.com/EsotericSoftware/spine-runtimes.git
synced 2025-12-20 17:26:01 +08:00
131 lines
5.8 KiB
HTML
131 lines
5.8 KiB
HTML
<!DOCTYPE html>
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<html>
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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</head>
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<script src="../dist/iife/spine-webgl.js"></script>
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<style>
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* {
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margin: 0;
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padding: 0;
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}
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</style>
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<body>
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<canvas id="canvas" style="position: absolute; width: 100%; height: 100%;"></canvas>
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<script>
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class App {
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constructor() {
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this.skeleton = null;
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this.animationState = null;
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this.draggableBones = [];
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this.draggedBone = null;
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}
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loadAssets(canvas) {
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canvas.assetManager.loadBinary("/assets/stretchyman-pro.skel");
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canvas.assetManager.loadTextureAtlas("/assets/stretchyman-pma.atlas");
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}
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initialize(canvas) {
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let assetManager = canvas.assetManager;
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var atlas = assetManager.require("/assets/stretchyman-pma.atlas");
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var atlasLoader = new spine.AtlasAttachmentLoader(atlas);
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var skeletonBinary = new spine.SkeletonBinary(atlasLoader);
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skeletonBinary.scale = 1;
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var skeletonData = skeletonBinary.readSkeletonData(assetManager.require("/assets/stretchyman-pro.skel"));
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this.skeleton = new spine.Skeleton(skeletonData);
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var animationStateData = new spine.AnimationStateData(skeletonData);
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this.animationState = new spine.AnimationState(animationStateData);
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// Find the bones that should be draggable
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let draggableBoneNames = [
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"back-leg-ik-target",
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"front-leg-ik-target",
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"back-arm-ik-target",
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"front-arm-ik-target",
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"hip",
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"neck2"
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];
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for (let boneName of draggableBoneNames) {
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let bone = this.skeleton.findBone(boneName);
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if (bone == null) throw Error("Couldn't find bone " + boneName);
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this.draggableBones.push(bone)
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}
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// Setup an input listener on the canvas to process touch/mouse events.
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canvas.input.addListener({
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down: (x, y) => {
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// Calculate the mouse position in the coordinate space of the camera, aka world space.
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// The skeleton and its bones live in the same coordinate space.
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let mousePosition = new spine.Vector3(x, y);
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canvas.renderer.camera.screenToWorld(mousePosition, canvas.htmlCanvas.clientWidth, canvas.htmlCanvas.clientHeight);
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// Find the first bone within a radius of 20 pixels to the mouse position
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this.selectedBone = null;
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for (let bone of this.draggableBones) {
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if (mousePosition.distance(new spine.Vector3(bone.pose.worldX, bone.pose.worldY, 0)) < 20) {
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this.selectedBone = bone;
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break;
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}
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}
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},
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dragged: (x, y) => {
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// If no bone was selected, bail.
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if (this.selectedBone == null) return;
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// Calculate the mouse position in the coordinate space of the camera, aka world space.
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// The skeleton and its bones live in this coordinate space.
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let mousePosition = new spine.Vector3(x, y);
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canvas.renderer.camera.screenToWorld(mousePosition, canvas.htmlCanvas.clientWidth, canvas.htmlCanvas.clientHeight);
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if (this.selectedBone.parent != null) {
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// If the bone to be dragged has a parent, transform the mouse world position to
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// the parent bone's coordinate system, and set the bone's position accordingly.
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let position = new spine.Vector2(mousePosition.x, mousePosition.y);
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this.selectedBone.parent.pose.worldToLocal(position);
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this.selectedBone.pose.x = position.x;
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this.selectedBone.pose.y = position.y;
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} else {
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// If the dragged bone has no parent, it's the root bone and we can simply set its
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// position to the mouse world position.
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this.selectedBone.pose.x = mousePosition.x;
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this.selectedBone.pose.y = mousePosition.y;
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}
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}
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})
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}
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update(canvas, delta) {
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this.animationState.update(delta);
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this.animationState.apply(this.skeleton);
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this.skeleton.updateWorldTransform(spine.Physics.update);
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}
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render(canvas) {
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let renderer = canvas.renderer;
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renderer.resize(spine.ResizeMode.Expand);
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canvas.clear(0.2, 0.2, 0.2, 1);
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renderer.begin();
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renderer.drawSkeleton(this.skeleton);
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// Draw a circle with a radius of 20 pixels around each draggable bone
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let boneColor = new spine.Color(1, 0, 0, 0.5);
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let selectedBoneColor = new spine.Color(0, 1, 0, 0.5);
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for (let bone of this.draggableBones) {
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renderer.circle(true, bone.pose.worldX, bone.pose.worldY, 20, bone == this.selectedBone ? selectedBoneColor : boneColor);
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}
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renderer.end();
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}
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}
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new spine.SpineCanvas(document.getElementById("canvas"), {
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app: new App()
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})
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</script>
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</body>
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</html> |