89 lines
2.2 KiB
TypeScript
89 lines
2.2 KiB
TypeScript
import { GLContextObject } from "./GLContext";
|
|
import { Camera } from "./Camera";
|
|
import { BasicsShader } from "./BasicShader";
|
|
|
|
class BaseCube extends GLContextObject{
|
|
|
|
/**
|
|
* 立方体数据
|
|
*/
|
|
static CUBE_VER_DATA = new Float32Array([
|
|
1,1,1, -1,1,1, -1,1,-1, 1,1,-1,
|
|
1,-1,1, -1,-1,1, -1,-1,-1, 1,-1,-1
|
|
]);
|
|
|
|
/**
|
|
* 立方体线段绘制索引
|
|
*/
|
|
static CUBE_ELE_DATA = new Uint16Array([
|
|
0,1, 1,2, 2,3, 3,0,
|
|
4,5, 5,6, 6,7, 7,4,
|
|
0,4, 1,5, 2,6, 3,7
|
|
]);
|
|
|
|
public onLoad() {
|
|
|
|
// 创建缓冲区
|
|
this.cubeVertexBuffer = this.gl.createBuffer();
|
|
this.cubeElementBuffer = this.gl.createBuffer();
|
|
|
|
// 绑定缓冲区
|
|
this.gl.bindBuffer(this.gl.ARRAY_BUFFER, this.cubeVertexBuffer);
|
|
this.gl.bufferData(this.gl.ARRAY_BUFFER, BaseCube.CUBE_VER_DATA, this.gl.STATIC_DRAW);
|
|
|
|
this.gl.bindBuffer(this.gl.ELEMENT_ARRAY_BUFFER, this.cubeElementBuffer);
|
|
this.gl.bufferData(this.gl.ELEMENT_ARRAY_BUFFER, BaseCube.CUBE_ELE_DATA, this.gl.STATIC_DRAW);
|
|
}
|
|
|
|
private cubeVertexBuffer: WebGLBuffer | null = null;
|
|
private cubeElementBuffer: WebGLBuffer | null = null;
|
|
|
|
/**
|
|
* 绘制半径
|
|
*/
|
|
private r:[number,number,number] = [1, 1, 1];
|
|
|
|
/**
|
|
* 坐标
|
|
*/
|
|
public position = [0, 0, 0];
|
|
|
|
/**
|
|
* 颜色
|
|
*/
|
|
public color = [.5, .5, .5];
|
|
|
|
/**
|
|
* 绘制立方体
|
|
*/
|
|
public draw(shader: BasicsShader){
|
|
|
|
// 使用程序
|
|
shader.use();
|
|
|
|
// 绑定缓冲区
|
|
this.gl.bindBuffer(this.gl.ARRAY_BUFFER, this.cubeVertexBuffer);
|
|
this.gl.bindBuffer(this.gl.ELEMENT_ARRAY_BUFFER, this.cubeElementBuffer);
|
|
|
|
// 指定指针数据
|
|
this.gl.vertexAttribPointer(
|
|
shader.attribLocate("aPosition"),
|
|
3, this.gl.FLOAT, false, 0, 0);
|
|
|
|
// mvp参数传递
|
|
shader.mvp(this.camera.transformMat);
|
|
|
|
// 半径传递
|
|
shader.radius(this.r);
|
|
shader.position(this.position);
|
|
|
|
// 指定颜色
|
|
shader.color(this.color);
|
|
|
|
// 开始绘制
|
|
this.gl.drawElements(this.gl.LINES, 24, this.gl.UNSIGNED_SHORT, 0);
|
|
}
|
|
}
|
|
|
|
export default BaseCube;
|
|
export { BaseCube }; |