@tolokoban/tgd
Version:
ToloGameDev library for WebGL2
95 lines • 8.47 kB
JavaScript
import { TgdDataset } from "./../../dataset/index.js";
import { TgdVec4 } from "./../../math/index.js";
import { TgdPainter } from "./../painter.js";
import { TgdProgram } from "./../../program/index.js";
import { TgdVertexArray } from "./../../vao/index.js";
import { FRAG } from "./axes.frag.js";
import { VERT } from "./axes.vert.js";
export class TgdPainterAxes extends TgdPainter {
constructor(context, { x = 0, y = 0, z = 0, scale = 1 } = {}) {
super();
this.context = context;
const prg = new TgdProgram(context.gl, {
vert: VERT,
frag: FRAG,
});
this.prg = prg;
const dataset = new TgdDataset({
attPos: "vec3",
attColor: "vec4",
});
this.dataset = dataset;
// prettier-ignore
dataset.set("attPos", new Float32Array([
0, 0, 0, +1, +0, +0,
0, 0, 0, +0, +1, +0,
0, 0, 0, +0, +0, +1,
0, 0, 0, -1, -0, -0,
0, 0, 0, -0, -1, -0,
0, 0, 0, -0, -0, -1,
]));
const a = 1;
const b = 0.25;
// prettier-ignore
dataset.set("attColor", new Float32Array([
a, 0, 0, 1, a, 0, 0, 1,
0, a, 0, 1, 0, a, 0, 1,
0, 0, a, 1, 0, 0, a, 1,
b, 0, 0, 1, b, 0, 0, 1,
0, b, 0, 1, 0, b, 0, 1,
0, 0, b, 1, 0, 0, b, 1,
]));
this.vao = new TgdVertexArray(context.gl, prg, [dataset]);
this.translateAndScale = new TgdVec4(x, y, z, scale);
}
updateAxes([Xx, Xy, Xz], [Yx, Yy, Yz], [Zx, Zy, Zz]) {
// prettier-ignore
this.dataset.set("attPos", new Float32Array([
0, 0, 0, +Xx, +Xy, +Xz,
0, 0, 0, +Yx, +Yy, +Yz,
0, 0, 0, +Zx, +Zy, +Zz,
0, 0, 0, -Xx, -Xy, -Xz,
0, 0, 0, -Yx, -Yy, -Yz,
0, 0, 0, -Zx, -Zy, -Zz,
]));
this.vao.updateDataset(this.dataset);
}
get x() {
return this.translateAndScale.x;
}
set x(v) {
this.translateAndScale.x = v;
}
get y() {
return this.translateAndScale.y;
}
set y(v) {
this.translateAndScale.y = v;
}
get z() {
return this.translateAndScale.z;
}
set z(v) {
this.translateAndScale.z = v;
}
get scale() {
return this.translateAndScale.w;
}
set scale(v) {
this.translateAndScale.w = v;
}
delete() {
this.vao.delete();
}
paint() {
const { context, prg, vao, translateAndScale } = this;
const { gl, camera } = context;
prg.use();
prg.uniform4fv("uniTS", translateAndScale);
prg.uniformMatrix4fv("uniModelViewMatrix", camera.matrixModelView);
prg.uniformMatrix4fv("uniProjectionMatrix", camera.matrixProjection);
vao.bind();
gl.drawArrays(gl.LINES, 0, 12);
}
}
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