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| varying vec4 positionEC;
|
| void main()
| {
| vec3 position;
| vec3 direction;
| if (czm_orthographicIn3D == 1.0)
| {
| vec2 uv = (gl_FragCoord.xy - czm_viewport.xy) / czm_viewport.zw;
| vec2 minPlane = vec2(czm_frustumPlanes.z, czm_frustumPlanes.y); // left, bottom
| vec2 maxPlane = vec2(czm_frustumPlanes.w, czm_frustumPlanes.x); // right, top
| position = vec3(mix(minPlane, maxPlane, uv), 0.0);
| direction = vec3(0.0, 0.0, -1.0);
| }
| else
| {
| position = vec3(0.0);
| direction = normalize(positionEC.xyz);
| }
|
| czm_ray ray = czm_ray(position, direction);
|
| vec3 ellipsoid_center = czm_view[3].xyz;
|
| czm_raySegment intersection = czm_rayEllipsoidIntersectionInterval(ray, ellipsoid_center, czm_ellipsoidInverseRadii);
| if (!czm_isEmpty(intersection))
| {
| gl_FragColor = vec4(1.0, 1.0, 0.0, 1.0);
| }
| else
| {
| discard;
| }
|
| czm_writeLogDepth();
| }
|
|
