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| author | syuilo <4439005+syuilo@users.noreply.github.com> | 2025-03-09 14:28:01 +0900 |
|---|---|---|
| committer | syuilo <4439005+syuilo@users.noreply.github.com> | 2025-03-09 14:28:01 +0900 |
| commit | be7e3b9a0cb81b78a744993fef2fa2fd2833fa9c (patch) | |
| tree | c82e18ce93ec0a24c57d7e36eb54a09266b3a25b /packages/frontend/src/scripts/snowfall-effect.ts | |
| parent | enhnace(frontend): 文字列比較のためのローマナイズを強化(... (diff) | |
| download | sharkey-be7e3b9a0cb81b78a744993fef2fa2fd2833fa9c.tar.gz sharkey-be7e3b9a0cb81b78a744993fef2fa2fd2833fa9c.tar.bz2 sharkey-be7e3b9a0cb81b78a744993fef2fa2fd2833fa9c.zip | |
refactor(frontend): scripts -> utility
Diffstat (limited to 'packages/frontend/src/scripts/snowfall-effect.ts')
| -rw-r--r-- | packages/frontend/src/scripts/snowfall-effect.ts | 490 |
1 files changed, 0 insertions, 490 deletions
diff --git a/packages/frontend/src/scripts/snowfall-effect.ts b/packages/frontend/src/scripts/snowfall-effect.ts deleted file mode 100644 index d88bdb6660..0000000000 --- a/packages/frontend/src/scripts/snowfall-effect.ts +++ /dev/null @@ -1,490 +0,0 @@ -/* - * SPDX-FileCopyrightText: syuilo and misskey-project - * SPDX-License-Identifier: AGPL-3.0-only - */ - -export class SnowfallEffect { - private VERTEX_SOURCE = `#version 300 es - in vec4 a_position; - in vec4 a_color; - in vec3 a_rotation; - in vec3 a_speed; - in float a_size; - out vec4 v_color; - out float v_rotation; - uniform float u_time; - uniform mat4 u_projection; - uniform vec3 u_worldSize; - uniform float u_gravity; - uniform float u_wind; - uniform float u_spin_factor; - uniform float u_turbulence; - - void main() { - v_color = a_color; - v_rotation = a_rotation.x + (u_time * u_spin_factor) * a_rotation.y; - - vec3 pos = a_position.xyz; - - pos.x = mod(pos.x + u_time + u_wind * a_speed.x, u_worldSize.x * 2.0) - u_worldSize.x; - pos.y = mod(pos.y - u_time * a_speed.y * u_gravity, u_worldSize.y * 2.0) - u_worldSize.y; - - pos.x += sin(u_time * a_speed.z * u_turbulence) * a_rotation.z; - pos.z += cos(u_time * a_speed.z * u_turbulence) * a_rotation.z; - - gl_Position = u_projection * vec4(pos.xyz, a_position.w); - gl_PointSize = (a_size / gl_Position.w) * 100.0; - } - `; - - private FRAGMENT_SOURCE = `#version 300 es - precision highp float; - - in vec4 v_color; - in float v_rotation; - uniform sampler2D u_texture; - out vec4 out_color; - - void main() { - vec2 rotated = vec2( - cos(v_rotation) * (gl_PointCoord.x - 0.5) + sin(v_rotation) * (gl_PointCoord.y - 0.5) + 0.5, - cos(v_rotation) * (gl_PointCoord.y - 0.5) - sin(v_rotation) * (gl_PointCoord.x - 0.5) + 0.5 - ); - - vec4 snowflake = texture(u_texture, rotated); - - out_color = vec4(snowflake.rgb * v_color.xyz, snowflake.a * v_color.a); - } - `; - - private gl: WebGLRenderingContext; - private program: WebGLProgram; - private canvas: HTMLCanvasElement; - private buffers: Record<string, { - size: number; - value: number[] | Float32Array; - location: number; - ref: WebGLBuffer; - }>; - private uniforms: Record<string, { - type: string; - value: number[] | Float32Array; - location: WebGLUniformLocation; - }>; - private texture: WebGLTexture; - private camera: { - fov: number; - near: number; - far: number; - aspect: number; - z: number; - }; - private wind: { - current: number; - force: number; - target: number; - min: number; - max: number; - easing: number; - }; - private time: { - start: number; - previous: number; - } = { - start: 0, - previous: 0, - }; - private raf = 0; - - private density: number = 1 / 90; - private depth = 100; - private count = 1000; - private gravity = 100; - private speed: number = 1 / 10000; - private color: number[] = [1, 1, 1]; - private opacity = 1; - private size = 4; - private snowflake = 'data:image/png;base64,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'; - private mode = 'snow'; - - private INITIAL_BUFFERS = () => ({ - position: { size: 3, value: [] }, - color: { size: 4, value: [] }, - size: { size: 1, value: [] }, - rotation: { size: 3, value: [] }, - speed: { size: 3, value: [] }, - }); - - private INITIAL_UNIFORMS = () => ({ - time: { type: 'float', value: 0 }, - worldSize: { type: 'vec3', value: [0, 0, 0] }, - gravity: { type: 'float', value: this.gravity }, - wind: { type: 'float', value: 0 }, - spin_factor: { type: 'float', value: this.mode === 'sakura' ? 8 : 1 }, - turbulence: { type: 'float', value: this.mode === 'sakura' ? 2 : 1 }, - projection: { - type: 'mat4', - value: [1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1], - }, - }); - - private UNIFORM_SETTERS = { - int: 'uniform1i', - float: 'uniform1f', - vec2: 'uniform2fv', - vec3: 'uniform3fv', - vec4: 'uniform4fv', - mat2: 'uniformMatrix2fv', - mat3: 'uniformMatrix3fv', - mat4: 'uniformMatrix4fv', - }; - - private CAMERA = { - fov: 60, - near: 5, - far: 10000, - aspect: 1, - z: 100, - }; - - private WIND = { - current: 0, - force: 0.01, - target: 0.01, - min: 0, - max: 0.125, - easing: 0.0005, - }; - /** - * @throws {Error} - Thrown when it fails to get WebGL context for the canvas - */ - constructor(options: { - sakura?: boolean; - }) { - if (options.sakura) { - this.mode = 'sakura'; - this.snowflake = 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- this.size = 10; - this.density = 1 / 280; - } - - const canvas = this.initCanvas(); - const gl = canvas.getContext('webgl2', { antialias: true }); - if (gl == null) throw new Error('Failed to get WebGL context'); - - document.body.append(canvas); - - this.canvas = canvas; - this.gl = gl; - this.program = this.initProgram(); - this.buffers = this.initBuffers(); - this.uniforms = this.initUniforms(); - this.texture = this.initTexture(); - this.camera = this.initCamera(); - this.wind = this.initWind(); - - this.resize = this.resize.bind(this); - this.update = this.update.bind(this); - - window.addEventListener('resize', () => this.resize()); - } - - private initCanvas(): HTMLCanvasElement { - const canvas = document.createElement('canvas'); - - Object.assign(canvas.style, { - position: 'fixed', - top: 0, - left: 0, - width: '100vw', - height: '100vh', - background: 'transparent', - 'pointer-events': 'none', - 'z-index': 2147483647, - }); - - return canvas; - } - - private initCamera() { - return { ...this.CAMERA }; - } - - private initWind() { - return { ...this.WIND }; - } - - private initShader(type, source): WebGLShader { - const { gl } = this; - const shader = gl.createShader(type); - if (shader == null) throw new Error('Failed to create shader'); - - gl.shaderSource(shader, source); - gl.compileShader(shader); - - return shader; - } - - private initProgram(): WebGLProgram { - const { gl } = this; - const vertex = this.initShader(gl.VERTEX_SHADER, this.VERTEX_SOURCE); - const fragment = this.initShader(gl.FRAGMENT_SHADER, this.FRAGMENT_SOURCE); - const program = gl.createProgram(); - if (program == null) throw new Error('Failed to create program'); - - gl.attachShader(program, vertex); - gl.attachShader(program, fragment); - gl.linkProgram(program); - gl.useProgram(program); - - return program; - } - - private initBuffers(): SnowfallEffect['buffers'] { - const { gl, program } = this; - const buffers = this.INITIAL_BUFFERS() as unknown as SnowfallEffect['buffers']; - - for (const [name, buffer] of Object.entries(buffers)) { - buffer.location = gl.getAttribLocation(program, `a_${name}`); - buffer.ref = gl.createBuffer()!; - - gl.bindBuffer(gl.ARRAY_BUFFER, buffer.ref); - gl.enableVertexAttribArray(buffer.location); - gl.vertexAttribPointer( - buffer.location, - buffer.size, - gl.FLOAT, - false, - 0, - 0, - ); - } - - return buffers; - } - - private updateBuffers() { - const { buffers } = this; - - for (const name of Object.keys(buffers)) { - this.setBuffer(name); - } - } - - private setBuffer(name: string, value?) { - const { gl, buffers } = this; - const buffer = buffers[name]; - - buffer.value = new Float32Array(value ?? buffer.value); - - gl.bindBuffer(gl.ARRAY_BUFFER, buffer.ref); - gl.bufferData(gl.ARRAY_BUFFER, buffer.value, gl.STATIC_DRAW); - } - - private initUniforms(): SnowfallEffect['uniforms'] { - const { gl, program } = this; - const uniforms = this.INITIAL_UNIFORMS() as unknown as SnowfallEffect['uniforms']; - - for (const [name, uniform] of Object.entries(uniforms)) { - uniform.location = gl.getUniformLocation(program, `u_${name}`)!; - } - - return uniforms; - } - - private updateUniforms() { - const { uniforms } = this; - - for (const name of Object.keys(uniforms)) { - this.setUniform(name); - } - } - - private setUniform(name: string, value?) { - const { gl, uniforms } = this; - const uniform = uniforms[name]; - const setter = this.UNIFORM_SETTERS[uniform.type]; - const isMatrix = /^mat[2-4]$/i.test(uniform.type); - - uniform.value = value ?? uniform.value; - - if (isMatrix) { - gl[setter](uniform.location, false, uniform.value); - } else { - gl[setter](uniform.location, uniform.value); - } - } - - private initTexture() { - const { gl } = this; - const texture = gl.createTexture(); - if (texture == null) throw new Error('Failed to create texture'); - const image = new Image(); - - gl.bindTexture(gl.TEXTURE_2D, texture); - gl.texImage2D( - gl.TEXTURE_2D, - 0, - gl.RGBA, - 1, - 1, - 0, - gl.RGBA, - gl.UNSIGNED_BYTE, - new Uint8Array([0, 0, 0, 0]), - ); - - image.onload = () => { - gl.bindTexture(gl.TEXTURE_2D, texture); - gl.texImage2D( - gl.TEXTURE_2D, - 0, - gl.RGBA, - gl.RGBA, - gl.UNSIGNED_BYTE, - image, - ); - gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR); - gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR); - gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE); - gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE); - }; - - image.src = this.snowflake; - - return texture; - } - - private initSnowflakes(vw: number, vh: number, dpi: number) { - const position: number[] = []; - const color: number[] = []; - const size: number[] = []; - const rotation: number[] = []; - const speed: number[] = []; - - const height = 1 / this.density; - const width = (vw / vh) * height; - const depth = this.depth; - const count = this.count; - const length = (vw / vh) * count; - - for (let i = 0; i < length; ++i) { - position.push( - -width + Math.random() * width * 2, - -height + Math.random() * height * 2, - Math.random() * depth * 2, - ); - - speed.push(1 + Math.random(), 1 + Math.random(), Math.random() * 10); - - rotation.push( - Math.random() * 2 * Math.PI, - Math.random() * 20, - Math.random() * 10, - ); - - color.push(...this.color, 0.1 + Math.random() * this.opacity); - //size.push((this.size * Math.random() * this.size * vh * dpi) / 1000); - size.push((this.size * vh * dpi) / 1000); - } - - this.setUniform('worldSize', [width, height, depth]); - - this.setBuffer('position', position); - this.setBuffer('color', color); - this.setBuffer('rotation', rotation); - this.setBuffer('size', size); - this.setBuffer('speed', speed); - } - - private setProjection(aspect: number) { - const { camera } = this; - - camera.aspect = aspect; - - const fovRad = (camera.fov * Math.PI) / 180; - const f = Math.tan(Math.PI * 0.5 - 0.5 * fovRad); - const rangeInv = 1.0 / (camera.near - camera.far); - - const m0 = f / camera.aspect; - const m5 = f; - const m10 = (camera.near + camera.far) * rangeInv; - const m11 = -1; - const m14 = camera.near * camera.far * rangeInv * 2 + camera.z; - const m15 = camera.z; - - return [m0, 0, 0, 0, 0, m5, 0, 0, 0, 0, m10, m11, 0, 0, m14, m15]; - } - - public render() { - const { gl } = this; - - gl.enable(gl.BLEND); - gl.enable(gl.CULL_FACE); - gl.blendFunc(gl.SRC_ALPHA, gl.ONE); - gl.disable(gl.DEPTH_TEST); - - this.updateBuffers(); - this.updateUniforms(); - this.resize(true); - - this.time = { - start: window.performance.now(), - previous: window.performance.now(), - }; - - if (this.raf) window.cancelAnimationFrame(this.raf); - this.raf = window.requestAnimationFrame(this.update); - - return this; - } - - private resize(updateSnowflakes = false) { - const { canvas, gl } = this; - const vw = canvas.offsetWidth; - const vh = canvas.offsetHeight; - const aspect = vw / vh; - const dpi = window.devicePixelRatio; - - canvas.width = vw * dpi; - canvas.height = vh * dpi; - - gl.viewport(0, 0, vw * dpi, vh * dpi); - gl.clearColor(0, 0, 0, 0); - - if (updateSnowflakes === true) { - this.initSnowflakes(vw, vh, dpi); - } - - this.setUniform('projection', this.setProjection(aspect)); - } - - private update(timestamp: number) { - const { gl, buffers, wind } = this; - const elapsed = (timestamp - this.time.start) * this.speed; - const delta = timestamp - this.time.previous; - - gl.clear(gl.COLOR_BUFFER_BIT); - gl.drawArrays( - gl.POINTS, - 0, - buffers.position.value.length / buffers.position.size, - ); - - if (Math.random() > 0.995) { - wind.target = - (wind.min + Math.random() * (wind.max - wind.min)) * - (Math.random() > 0.5 ? -1 : 1); - } - - wind.force += (wind.target - wind.force) * wind.easing; - wind.current += wind.force * (delta * 0.2); - - this.setUniform('wind', wind.current); - this.setUniform('time', elapsed); - - this.time.previous = timestamp; - - this.raf = window.requestAnimationFrame(this.update); - } -} |