mirror of
https://github.com/EsotericSoftware/spine-runtimes.git
synced 2026-02-04 14:24:53 +08:00
140 lines
4.9 KiB
HTML
140 lines
4.9 KiB
HTML
<html>
|
|
<head>
|
|
<meta charset="UTF-8" />
|
|
<title>spine-pixi-v8</title>
|
|
<script src="https://cdn.jsdelivr.net/npm/pixi.js@8.4.1/dist/pixi.js"></script>
|
|
<script src="../dist/iife/spine-pixi-v8.js"></script>
|
|
<link rel="stylesheet" href="../../index.css">
|
|
</head>
|
|
|
|
<body>
|
|
<script>
|
|
(async function () {
|
|
var app = new PIXI.Application();
|
|
await app.init({
|
|
width: window.innerWidth,
|
|
height: window.innerHeight,
|
|
resolution: window.devicePixelRatio || 1,
|
|
autoDensity: true,
|
|
resizeTo: window,
|
|
backgroundColor: 0x7CFC00,
|
|
hello: true,
|
|
})
|
|
document.body.appendChild(app.canvas);
|
|
|
|
// Pre-load the skeleton data and atlas. You can also load .json skeleton data.
|
|
PIXI.Assets.add({alias: "spineboyData", src: "/assets/spineboy-pro.skel"});
|
|
PIXI.Assets.add({alias: "spineboyAtlas", src: "/assets/spineboy-pma.atlas"});
|
|
await PIXI.Assets.load(["spineboyData", "spineboyAtlas"]);
|
|
|
|
// Create the spine display object
|
|
const spineboy = spine.Spine.from({skeleton: "spineboyData", atlas: "spineboyAtlas",
|
|
scale: 0.5,
|
|
});
|
|
|
|
// Set the default mix time to use when transitioning from one animation to the next.
|
|
spineboy.state.data.defaultMix = 0.2;
|
|
|
|
// Set animation "run" on track 0, looped.
|
|
spineboy.state.setAnimation(0, "walk", true);
|
|
|
|
// Center the spine object on screen.
|
|
spineboy.x = window.innerWidth / 2;
|
|
spineboy.y = window.innerHeight / 2 + spineboy.getBounds().height / 2;
|
|
|
|
const vertexShader = /* glsl */ `#version 300 es
|
|
precision highp float;
|
|
|
|
in vec2 aPosition;
|
|
|
|
uniform vec4 uInputSize;
|
|
uniform vec4 uOutputFrame;
|
|
uniform vec4 uOutputTexture;
|
|
|
|
out vec2 vTextureCoord;
|
|
|
|
void main() {
|
|
vec2 position = aPosition * uOutputFrame.zw + uOutputFrame.xy;
|
|
position.x = position.x * (2.0 / uOutputTexture.x) - 1.0;
|
|
position.y = position.y * (2.0 * uOutputTexture.z / uOutputTexture.y) - uOutputTexture.z;
|
|
gl_Position = vec4(position, 0.0, 1.0);
|
|
vTextureCoord = aPosition * (uOutputFrame.zw * uInputSize.zw);
|
|
}
|
|
`;
|
|
|
|
const fragmentShader = /* glsl */ `#version 300 es
|
|
precision highp float;
|
|
|
|
in vec2 vTextureCoord;
|
|
|
|
uniform sampler2D uTexture;
|
|
uniform vec4 uInputSize;
|
|
uniform vec4 uOutputFrame;
|
|
uniform vec2 uShadowDirection;
|
|
uniform vec3 uShadowColor;
|
|
uniform float uFloorY;
|
|
uniform float uAlpha;
|
|
|
|
out vec4 finalColor;
|
|
|
|
void main() {
|
|
vec2 screenCoord = vTextureCoord * uInputSize.xy + uOutputFrame.xy;
|
|
|
|
// Shadow projection logic
|
|
float paramY = (screenCoord.y - uFloorY) / uShadowDirection.y;
|
|
vec2 shadow;
|
|
shadow.y = paramY + uFloorY;
|
|
shadow.x = screenCoord.x + paramY * uShadowDirection.x;
|
|
|
|
vec2 bodyFilterCoord = (shadow - uOutputFrame.xy) * uInputSize.zw;
|
|
|
|
vec4 originalColor = texture(uTexture, vTextureCoord);
|
|
|
|
// Boundary Check: Prevents "streaking" if shadow goes outside texture bounds
|
|
// We strictly check 0.0 to 1.0 range
|
|
bool outside = bodyFilterCoord.x < 0.0 || bodyFilterCoord.x > 1.0 ||
|
|
bodyFilterCoord.y < 0.0 || bodyFilterCoord.y > 1.0;
|
|
|
|
if (outside) {
|
|
finalColor = originalColor;
|
|
} else {
|
|
vec4 shadowSample = texture(uTexture, bodyFilterCoord);
|
|
|
|
// Apply custom shadow color and alpha
|
|
vec4 shadowColor = vec4(uShadowColor, shadowSample.a * uAlpha);
|
|
|
|
// Composite: Shadow (backdrop) + Original (source)
|
|
finalColor = originalColor + shadowColor * (1.0 - originalColor.a);
|
|
}
|
|
}
|
|
`;
|
|
|
|
const { Filter, GlProgram } = PIXI;
|
|
const shadowFilter = new Filter({
|
|
glProgram: GlProgram.from({ vertex: vertexShader, fragment: fragmentShader }),
|
|
resources: {
|
|
shadowUniforms: {
|
|
uShadowDirection: { value: [0.4, 0.5], type: "vec2<f32>" },
|
|
uShadowColor: { value: [0.0, 0.0, 0.0], type: "vec3<f32>" },
|
|
uFloorY: { value: [0.0], type: "f32" },
|
|
uAlpha: { value: [0.4], type: "f32" },
|
|
},
|
|
},
|
|
})
|
|
|
|
// Padding is the max shadow shift to the sides
|
|
shadowFilter.padding = 200;
|
|
|
|
spineboy.filters = [shadowFilter];
|
|
|
|
app.ticker.add(() => {
|
|
// Calculate global Y of the spine's origin (feet)
|
|
shadowFilter.resources.shadowUniforms.uniforms.uFloorY = spineboy.toGlobal({ x: 0, y: 0 }).y
|
|
});
|
|
|
|
// Add the display object to the stage.
|
|
app.stage.addChild(spineboy);
|
|
})();
|
|
</script>
|
|
</body>
|
|
</html> |