Class Standard

src/main/java/fieldbox/boxes/plugins/Viewport.java:63–195

shaders for standard drawing of points lines and planes (with 3d camera transform)

	public class Standard {
		private final Camera camera;

		BaseMesh triangles = BaseMesh.triangleList(0, 0);
		MeshBuilder triangles_builder = new MeshBuilder(triangles);
		BaseMesh lines = BaseMesh.lineList(0, 0);

		MeshBuilder lines_builder = new MeshBuilder(lines);
		BaseMesh points = BaseMesh.pointList(0);
		MeshBuilder points_builder = new MeshBuilder(points);

		Shader trianglesAndLinesShader = new Shader();

		Shader pointShader = new Shader();

		public Standard(Camera camera) {
			this.camera = camera;
			trianglesAndLinesShader.addSource(Shader.Type.vertex, "#version 410\n" +
				"layout(location=0) in vec3 position;\n" +
				"layout(location=1) in vec4 color;\n" +
				"out vec4 vcolor;\n" +
				"uniform mat4 _p;\n" +
				"uniform mat4 _mv;\n" +
				"void main()\n" +
				"{\n" +
				"gl_Position = _p * _mv * vec4(position, 1.0); \n" +
				"vcolor = color;\n" +
				"}");

			trianglesAndLinesShader.addSource(Shader.Type.fragment, "#version 410\n" +
				"layout(location=0) out vec4 _output;\n" +
				"in vec4 vcolor;\n" +
				"uniform float opacity; \n" +
				"uniform float zoffset; \n" +
				"void main()\n" +
				"{\n" +
				"	float f = mod(gl_FragCoord.x-gl_FragCoord.y,20)/20.0;\n" +
				"	f = (sin(f*3.14*2)+1)/2;" +
				"	f = (smoothstep(0.45, 0.55, f)+1)/2;" +
				"	_output  = vec4(abs(vcolor.xyzw));\n" +
				"	if (vcolor.w<0) _output.w *= f;" +
				"	_output.w *= opacity;\n" +
				"	gl_FragDepth = gl_FragCoord.z+zoffset;\n" +
//				    " _output = vec4(1,0,1,1);" +
				"}");

			// camera
			trianglesAndLinesShader.attach(new Uniform<Mat4>("_p", () -> camera.projectionMatrix(drawing==null ? 0 : drawing.displayZ)));
			trianglesAndLinesShader.attach(new Uniform<Mat4>("_mv", () ->  camera.view(drawing==null ? 0 : drawing.displayZ)));
			trianglesAndLinesShader.attach(new Uniform<Float>("opacity", () -> 1f));


			pointShader.addSource(Shader.Type.vertex, "#version 410\n" +
				"layout(location=0) in vec3 position;\n" +
				"layout(location=1) in vec4 color;\n" +
				"layout(location=2) in vec2 pointControl;\n" +
				"out vec4 vcolor_q;\n" +
				"uniform mat4 _p;\n" +
				"uniform mat4 _mv;\n" +
				"out vec2 pc_q;\n" +