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2 lines
12 KiB
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o=this._getNormal(e,t,r),s=i.positions.length/3;i.indices.push(s,s+1,s+2,s,s+2,s+3),i.positions.push(e.x,e.y,e.z,t.x,t.y,t.z,r.x,r.y,r.z,n.x,n.y,n.z),i.normals.push(o.x,o.y,o.z,o.x,o.y,o.z,o.x,o.y,o.z,o.x,o.y,o.z);let a=new Cesium.Cartesian3(0,.5,.5);this._moveAndScale([e,t,r,n],a,i)}_triangle(e,t,r,n){let i=n.positions.length/3;n.indices.push(i,i+1,i+2);let o=this._getNormal(e,t,r);n.positions.push(e.x,e.y,e.z,t.x,t.y,t.z,r.x,r.y,r.z),n.normals.push(o.x,o.y,o.z,o.x,o.y,o.z,o.x,o.y,o.z);let s=new Cesium.Cartesian3(0,.5,.5);this._moveAndScale([e,t,r],s,n)}_getNormal(e,t,r){let n=new Cesium.Cartesian3,i=new Cesium.Cartesian3;Cesium.Cartesian3.subtract(e,t,n),Cesium.Cartesian3.subtract(t,r,i),Cesium.Cartesian3.normalize(n,n),Cesium.Cartesian3.normalize(i,i);let o=Cesium.Cartesian3.cross(n,i,new Cesium.Cartesian3);return Cesium.Cartesian3.normalize(o,o),o}_moveAndScale(e,t,r){e.forEach(e=>{let n=Cesium.Cartesian3.add(e,t,new Cesium.Cartesian3);r.uvs.push(n.y,n.z)})}_createCustomPrimitive(e){const t=XE.Obj.CustomPrimitive.getRenderState(!0,!0);t.cull.enabled=!1;const r={color:[0,.5,.5,.5],renderState:t,fragmentShaderSource:"\n\n\n varying vec3 v_positionEC;\n varying vec3 v_normalEC;\n varying vec2 v_st;\n varying vec4 v_color;\n uniform sampler2D u_image;\n uniform vec4 u_color;\n void main()\n {\n vec3 positionToEyeEC = -v_positionEC;\n vec3 normalEC = normalize(v_normalEC);\n normalEC = faceforward(normalEC, vec3(0.0, 0.0, 1.0), -normalEC);\n vec4 imageColor = texture2D(u_image, fract(v_st));\n\n vec3 diffuse = imageColor.rgb;\n float alpha = imageColor.a;\n\n diffuse *= v_color.rgb;\n alpha *= v_color.a;\n\n diffuse *= u_color.rgb;\n alpha *= u_color.a;\n\n gl_FragColor = vec4(diffuse, alpha);\n }\n ",translucent:!1};this._customPrimitive=new 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