ngx-acuw
Version:
Angular components using WEBGL (threejs)
82 lines • 12 kB
JavaScript
import { Texture } from 'three';
export class TouchTexture {
constructor() {
this.size = 64;
this.maxAge = 120;
this.radius = 0.15;
this.trail = new Array();
this.initTexture();
}
/**
* Initializes the texture for the touch area
*/
initTexture() {
this.canvas = document.createElement('canvas');
this.canvas.width = this.canvas.height = this.size;
this.ctx = this.canvas.getContext('2d');
this.ctx.fillStyle = 'black';
this.ctx.fillRect(0, 0, this.canvas.width, this.canvas.height);
this.texture = new Texture(this.canvas);
this.canvas.id = 'touchTexture';
this.canvas.style.width = this.canvas.style.height = `${this.canvas.width}px`;
}
/**
* Updates the trail
*/
update() {
this.clear();
// age points
this.trail.forEach((point, i) => {
point.age++;
// remove old
if (point.age > this.maxAge) {
this.trail.splice(i, 1);
}
});
this.trail.forEach((point, i) => {
this.drawTouch(point);
});
this.texture.needsUpdate = true;
}
clear() {
this.ctx.fillStyle = 'black';
this.ctx.fillRect(0, 0, this.canvas.width, this.canvas.height);
}
addTouch(px, py) {
let force = 0;
const last = this.trail[this.trail.length - 1];
if (last) {
const dx = last.x - px;
const dy = last.y - py;
const dd = dx * dx + dy * dy;
force = Math.min(dd * 10000, 1);
}
this.trail.push({ x: px, y: py, age: 0, force });
}
drawTouch(point) {
const pos = {
x: point.x * this.size,
y: (1 - point.y) * this.size
};
let intensity = 1;
if (point.age < this.maxAge * 0.3) {
intensity = this.easeOutSine(point.age / (this.maxAge * 0.3), 0, 1, 1);
}
else {
intensity = this.easeOutSine(1 - (point.age - this.maxAge * 0.3) / (this.maxAge * 0.7), 0, 1, 1);
}
intensity *= point.force;
const radius = this.size * this.radius * intensity;
const grd = this.ctx.createRadialGradient(pos.x, pos.y, radius * 0.25, pos.x, pos.y, radius);
grd.addColorStop(0, `rgba(255, 255, 255, 0.2)`);
grd.addColorStop(1, 'rgba(0, 0, 0, 0.0)');
this.ctx.beginPath();
this.ctx.fillStyle = grd;
this.ctx.arc(pos.x, pos.y, radius, 0, Math.PI * 2);
this.ctx.fill();
}
easeOutSine(t, b, c, d) {
return c * Math.sin(t / d * (Math.PI / 2)) + b;
}
}
//# sourceMappingURL=data:application/json;base64,{"version":3,"file":"touch-texture.js","sourceRoot":"","sources":["../../../../../../projects/ngx-acuw/src/lib/image-as-particles/scripts/touch-texture.ts"],"names":[],"mappings":"AAAA,OAAO,EAAE,OAAO,EAAE,MAAM,OAAO,CAAC;AAGhC,MAAM,OAAO,YAAY;IAUvB;QACE,IAAI,CAAC,IAAI,GAAG,EAAE,CAAC;QACf,IAAI,CAAC,MAAM,GAAG,GAAG,CAAC;QAClB,IAAI,CAAC,MAAM,GAAG,IAAI,CAAC;QACnB,IAAI,CAAC,KAAK,GAAG,IAAI,KAAK,EAAS,CAAC;QAEhC,IAAI,CAAC,WAAW,EAAE,CAAC;IACrB,CAAC;IAED;;OAEG;IACH,WAAW;QACT,IAAI,CAAC,MAAM,GAAG,QAAQ,CAAC,aAAa,CAAC,QAAQ,CAAC,CAAC;QAC/C,IAAI,CAAC,MAAM,CAAC,KAAK,GAAG,IAAI,CAAC,MAAM,CAAC,MAAM,GAAG,IAAI,CAAC,IAAI,CAAC;QACnD,IAAI,CAAC,GAAG,GAAG,IAAI,CAAC,MAAM,CAAC,UAAU,CAAC,IAAI,CAA6B,CAAC;QACpE,IAAI,CAAC,GAAG,CAAC,SAAS,GAAG,OAAO,CAAC;QAC7B,IAAI,CAAC,GAAG,CAAC,QAAQ,CAAC,CAAC,EAAE,CAAC,EAAE,IAAI,CAAC,MAAM,CAAC,KAAK,EAAE,IAAI,CAAC,MAAM,CAAC,MAAM,CAAC,CAAC;QAE/D,IAAI,CAAC,OAAO,GAAG,IAAI,OAAO,CAAC,IAAI,CAAC,MAAM,CAAC,CAAC;QAExC,IAAI,CAAC,MAAM,CAAC,EAAE,GAAG,cAAc,CAAC;QAChC,IAAI,CAAC,MAAM,CAAC,KAAK,CAAC,KAAK,GAAG,IAAI,CAAC,MAAM,CAAC,KAAK,CAAC,MAAM,GAAG,GAAG,IAAI,CAAC,MAAM,CAAC,KAAK,IAAI,CAAC;IAChF,CAAC;IAED;;OAEG;IACH,MAAM;QACJ,IAAI,CAAC,KAAK,EAAE,CAAC;QAEb,aAAa;QACb,IAAI,CAAC,KAAK,CAAC,OAAO,CAAC,CAAC,KAAK,EAAE,CAAC,EAAE,EAAE;YAC9B,KAAK,CAAC,GAAG,EAAE,CAAC;YACZ,aAAa;YACb,IAAI,KAAK,CAAC,GAAG,GAAG,IAAI,CAAC,MAAM,EAAE;gBAC3B,IAAI,CAAC,KAAK,CAAC,MAAM,CAAC,CAAC,EAAE,CAAC,CAAC,CAAC;aACzB;QACH,CAAC,CAAC,CAAC;QAEH,IAAI,CAAC,KAAK,CAAC,OAAO,CAAC,CAAC,KAAK,EAAE,CAAC,EAAE,EAAE;YAC9B,IAAI,CAAC,SAAS,CAAC,KAAK,CAAC,CAAC;QACxB,CAAC,CAAC,CAAC;QAEH,IAAI,CAAC,OAAO,CAAC,WAAW,GAAG,IAAI,CAAC;IAClC,CAAC;IAED,KAAK;QACH,IAAI,CAAC,GAAG,CAAC,SAAS,GAAG,OAAO,CAAC;QAC7B,IAAI,CAAC,GAAG,CAAC,QAAQ,CAAC,CAAC,EAAE,CAAC,EAAE,IAAI,CAAC,MAAM,CAAC,KAAK,EAAE,IAAI,CAAC,MAAM,CAAC,MAAM,CAAC,CAAC;IACjE,CAAC;IAED,QAAQ,CAAC,EAAU,EAAE,EAAU;QAC7B,IAAI,KAAK,GAAG,CAAC,CAAC;QACd,MAAM,IAAI,GAAG,IAAI,CAAC,KAAK,CAAC,IAAI,CAAC,KAAK,CAAC,MAAM,GAAG,CAAC,CAAC,CAAC;QAC/C,IAAI,IAAI,EAAE;YACR,MAAM,EAAE,GAAG,IAAI,CAAC,CAAC,GAAG,EAAE,CAAC;YACvB,MAAM,EAAE,GAAG,IAAI,CAAC,CAAC,GAAG,EAAE,CAAC;YACvB,MAAM,EAAE,GAAG,EAAE,GAAG,EAAE,GAAG,EAAE,GAAG,EAAE,CAAC;YAC7B,KAAK,GAAG,IAAI,CAAC,GAAG,CAAC,EAAE,GAAG,KAAK,EAAE,CAAC,CAAC,CAAC;SACjC;QACD,IAAI,CAAC,KAAK,CAAC,IAAI,CAAC,EAAE,CAAC,EAAE,EAAE,EAAE,CAAC,EAAE,EAAE,EAAE,GAAG,EAAE,CAAC,EAAE,KAAK,EAAE,CAAC,CAAC;IACnD,CAAC;IAED,SAAS,CAAC,KAAY;QACpB,MAAM,GAAG,GAAG;YACV,CAAC,EAAE,KAAK,CAAC,CAAC,GAAG,IAAI,CAAC,IAAI;YACtB,CAAC,EAAE,CAAC,CAAC,GAAG,KAAK,CAAC,CAAC,CAAC,GAAG,IAAI,CAAC,IAAI;SAC7B,CAAC;QAEF,IAAI,SAAS,GAAG,CAAC,CAAC;QAClB,IAAI,KAAK,CAAC,GAAG,GAAG,IAAI,CAAC,MAAM,GAAG,GAAG,EAAE;YACjC,SAAS,GAAG,IAAI,CAAC,WAAW,CAAC,KAAK,CAAC,GAAG,GAAG,CAAC,IAAI,CAAC,MAAM,GAAG,GAAG,CAAC,EAAE,CAAC,EAAE,CAAC,EAAE,CAAC,CAAC,CAAC;SACxE;aAAM;YACL,SAAS,GAAG,IAAI,CAAC,WAAW,CAAC,CAAC,GAAG,CAAC,KAAK,CAAC,GAAG,GAAG,IAAI,CAAC,MAAM,GAAG,GAAG,CAAC,GAAG,CAAC,IAAI,CAAC,MAAM,GAAG,GAAG,CAAC,EAAE,CAAC,EAAE,CAAC,EAAE,CAAC,CAAC,CAAC;SAClG;QAED,SAAS,IAAI,KAAK,CAAC,KAAK,CAAC;QAEzB,MAAM,MAAM,GAAG,IAAI,CAAC,IAAI,GAAG,IAAI,CAAC,MAAM,GAAG,SAAS,CAAC;QACnD,MAAM,GAAG,GAAG,IAAI,CAAC,GAAG,CAAC,oBAAoB,CAAC,GAAG,CAAC,CAAC,EAAE,GAAG,CAAC,CAAC,EAAE,MAAM,GAAG,IAAI,EAAE,GAAG,CAAC,CAAC,EAAE,GAAG,CAAC,CAAC,EAAE,MAAM,CAAC,CAAC;QAC7F,GAAG,CAAC,YAAY,CAAC,CAAC,EAAE,0BAA0B,CAAC,CAAC;QAChD,GAAG,CAAC,YAAY,CAAC,CAAC,EAAE,oBAAoB,CAAC,CAAC;QAE1C,IAAI,CAAC,GAAG,CAAC,SAAS,EAAE,CAAC;QACrB,IAAI,CAAC,GAAG,CAAC,SAAS,GAAG,GAAG,CAAC;QACzB,IAAI,CAAC,GAAG,CAAC,GAAG,CAAC,GAAG,CAAC,CAAC,EAAE,GAAG,CAAC,CAAC,EAAE,MAAM,EAAE,CAAC,EAAE,IAAI,CAAC,EAAE,GAAG,CAAC,CAAC,CAAC;QACnD,IAAI,CAAC,GAAG,CAAC,IAAI,EAAE,CAAC;IAClB,CAAC;IAEO,WAAW,CAAC,CAAS,EAAE,CAAS,EAAE,CAAS,EAAE,CAAS;QAC5D,OAAO,CAAC,GAAG,IAAI,CAAC,GAAG,CAAC,CAAC,GAAG,CAAC,GAAG,CAAC,IAAI,CAAC,EAAE,GAAG,CAAC,CAAC,CAAC,GAAG,CAAC,CAAC;IACjD,CAAC;CACF","sourcesContent":["import { Texture } from 'three';\r\nimport { Trail } from './trail';\r\n\r\nexport class TouchTexture {\r\n  // Variables\r\n  private size: number;\r\n  private maxAge: number;\r\n  private radius: number;\r\n  private trail: Trail[];\r\n  private canvas!: HTMLCanvasElement;\r\n  private ctx!: CanvasRenderingContext2D;\r\n  public texture!: Texture;\r\n\r\n  constructor() {\r\n    this.size = 64;\r\n    this.maxAge = 120;\r\n    this.radius = 0.15;\r\n    this.trail = new Array<Trail>();\r\n\r\n    this.initTexture();\r\n  }\r\n\r\n  /**\r\n   * Initializes the texture for the touch area\r\n   */\r\n  initTexture(): void {\r\n    this.canvas = document.createElement('canvas');\r\n    this.canvas.width = this.canvas.height = this.size;\r\n    this.ctx = this.canvas.getContext('2d') as CanvasRenderingContext2D;\r\n    this.ctx.fillStyle = 'black';\r\n    this.ctx.fillRect(0, 0, this.canvas.width, this.canvas.height);\r\n\r\n    this.texture = new Texture(this.canvas);\r\n\r\n    this.canvas.id = 'touchTexture';\r\n    this.canvas.style.width = this.canvas.style.height = `${this.canvas.width}px`;\r\n  }\r\n\r\n  /**\r\n   * Updates the trail\r\n   */\r\n  update(): void {\r\n    this.clear();\r\n\r\n    // age points\r\n    this.trail.forEach((point, i) => {\r\n      point.age++;\r\n      // remove old\r\n      if (point.age > this.maxAge) {\r\n        this.trail.splice(i, 1);\r\n      }\r\n    });\r\n\r\n    this.trail.forEach((point, i) => {\r\n      this.drawTouch(point);\r\n    });\r\n\r\n    this.texture.needsUpdate = true;\r\n  }\r\n\r\n  clear(): void {\r\n    this.ctx.fillStyle = 'black';\r\n    this.ctx.fillRect(0, 0, this.canvas.width, this.canvas.height);\r\n  }\r\n\r\n  addTouch(px: number, py: number): void {\r\n    let force = 0;\r\n    const last = this.trail[this.trail.length - 1];\r\n    if (last) {\r\n      const dx = last.x - px;\r\n      const dy = last.y - py;\r\n      const dd = dx * dx + dy * dy;\r\n      force = Math.min(dd * 10000, 1);\r\n    }\r\n    this.trail.push({ x: px, y: py, age: 0, force });\r\n  }\r\n\r\n  drawTouch(point: Trail): void {\r\n    const pos = {\r\n      x: point.x * this.size,\r\n      y: (1 - point.y) * this.size\r\n    };\r\n\r\n    let intensity = 1;\r\n    if (point.age < this.maxAge * 0.3) {\r\n      intensity = this.easeOutSine(point.age / (this.maxAge * 0.3), 0, 1, 1);\r\n    } else {\r\n      intensity = this.easeOutSine(1 - (point.age - this.maxAge * 0.3) / (this.maxAge * 0.7), 0, 1, 1);\r\n    }\r\n\r\n    intensity *= point.force;\r\n\r\n    const radius = this.size * this.radius * intensity;\r\n    const grd = this.ctx.createRadialGradient(pos.x, pos.y, radius * 0.25, pos.x, pos.y, radius);\r\n    grd.addColorStop(0, `rgba(255, 255, 255, 0.2)`);\r\n    grd.addColorStop(1, 'rgba(0, 0, 0, 0.0)');\r\n\r\n    this.ctx.beginPath();\r\n    this.ctx.fillStyle = grd;\r\n    this.ctx.arc(pos.x, pos.y, radius, 0, Math.PI * 2);\r\n    this.ctx.fill();\r\n  }\r\n\r\n  private easeOutSine(t: number, b: number, c: number, d: number): number {\r\n    return c * Math.sin(t / d * (Math.PI / 2)) + b;\r\n  }\r\n}\r\n"]}