How do I adjust the axis ticks to that of my choosing? I.e., how would I get the z-axis to only label 2, 0, and -2, and in the font size that I want? I know how to do this in 2D but not 3D. You have to change properties of zticks. Why is the … Read more
First of all, I’m assuming that with “draw calls”, you mean the command that tells the GPU to render a certain set of vertices as triangles with a certain state (shaders, blend state and so on). Draw calls aren’t necessarily expensive. In older versions of Direct3D, many calls required a context switch, which was expensive, … Read more
Variables shared between both examples: GLint i; GLint count; GLint size; // size of the variable GLenum type; // type of the variable (float, vec3 or mat4, etc) const GLsizei bufSize = 16; // maximum name length GLchar name[bufSize]; // variable name in GLSL GLsizei length; // name length Attributes glGetProgramiv(program, GL_ACTIVE_ATTRIBUTES, &count); printf(“Active Attributes: … Read more
That’s where I got to: I’ve used Google’s APIDemos as a starting point – there are rotating cubes in there, each specified by two arrays: vertices and indices. I’ve build my model using Blender and exported it as OFF file – it’s a text file that lists all the vertices and then faces in terms … Read more
There’s no one answer to this but large worlds are often space-partitioned by using something along the lines of a quadtree or kd-tree which brings search times for finding nearest neighbors below linear time (fractional power, or at worst O( N^(2/3) ) for a 3D game). These methods are often referred to as BSP for … Read more
NOTE: three.js now supports THREE.RectAreaLight. This answer pertains to legacy versions of three.js. Your approach of using the point that maximizes the dot product is fundamentally flawed, and not physically plausible. In your first illustration above, suppose that your area light consisted of only the left half. The “purple” point — the one that maximizes … Read more
I seem to have landed on OpenTK. I think it gives more or less direct access to the OpenGL API and doesn’t require loads of dependencies. It is comparatively easy to understand. It requires few (and understandable) lines of code to get started. It doesn’t hold the objects for me so I’m free to change … Read more
The threejs rotation uses Radians (as you might know) you can use this mesh.rotation.x = Math.PI / 2; or mesh.rotation.set(new THREE.Vector3( 0, 0, Math.PI / 2));