cgIShape.js

class cgIShape {
    constructor () {
        this.points = [];
        this.bary = [];
        this.normals = [];
        this.indices = [];
        this.uv = [];
    }
    
    addTriangle (x0,y0,z0,x1,y1,z1,x2,y2,z2) {
        var nverts = this.points.length / 3;
        
        // push first vertex
        this.points.push(x0);  this.bary.push (1.0);
        this.points.push(y0);  this.bary.push (0.0);
        this.points.push(z0);  this.bary.push (0.0);
        //this.points.push(1.0);
        this.indices.push(nverts);
        nverts++;
        
        // push second vertex
        this.points.push(x1); this.bary.push (0.0);
        this.points.push(y1); this.bary.push (1.0);
        this.points.push(z1); this.bary.push (0.0);
        //this.points.push(1.0);
        this.indices.push(nverts);
        nverts++
        
        // push third vertex
        this.points.push(x2); this.bary.push (0.0);
        this.points.push(y2); this.bary.push (0.0);
        this.points.push(z2); this.bary.push (1.0);
        //this.points.push(1.0);
        this.indices.push(nverts);
        nverts++;
    }

    addNormal (x0,y0,z0,x1,y1,z1,x2,y2,z2) {
        
        // push first normal
        this.normals.push(x0);
        this.normals.push(y0);
        this.normals.push(z0);
        //this.normals.push(1.0);
        
        // push second normal
        this.normals.push(x1);
        this.normals.push(y1);
        this.normals.push(z1);
        //this.normals.push(1.0);
        
        // push third normal
        this.normals.push(x2);
        this.normals.push(y2);
        this.normals.push(z2); 
        //this.normals.push(1.0);

    }
    
    adduv (u0, v0, u1, v1, u2, v2) {
        // push first uv
        this.uv.push(u0);
        this.uv.push(v0);
        
        // push second uv
        this.uv.push(u1);
        this.uv.push(v1);
        
        // push third uv
        this.uv.push(u2);
        this.uv.push(v2);
       
    }
}

function radians(degrees)
{
  var pi = Math.PI;
  return degrees * (pi/180);
}