I’ve reformatted the code that was previously mentioned here, but more importantly you have left out some of the equations mentioned in the link provided by Niklas R def LLHtoECEF(lat, lon, alt): # see http://www.mathworks.de/help/toolbox/aeroblks/llatoecefposition.html rad = np.float64(6378137.0) # Radius of the Earth (in meters) f = np.float64(1.0/298.257223563) # Flattening factor WGS84 Model cosLat = … Read more
Use the Quaternion operator *. In Unity, when you multiply two quaternions, it applies the second quaternion (expressed in global axes) to the first quaternion along the local axes produced after the first Quaternion). So, if you want to do the equivalent of Rotate(q2, Space.Self), where q1 is the transform’s original rotation, and q3 is … Read more
Think of DX12 as “DirectX without training wheels, without brakes, and at the moment maybe without tires”. It will be more than a ‘few months’ for DirectX 12 to have a rich set of tutorials, support libraries, best practices, rock-solid drivers, and widely deployed support in the operating system on end-users machines. It’s “bleed edge” … Read more
You can take a look at the code here. I think the function is similar to what you are trying to solve. The function extracts an arbitrary plane from a volume given the size of the plane, the center point of the plane, and the plane normal, i.e. [A,B,C]. It also outputs the volumetric index … Read more
Since JDK8u60 b14 transparency is enabled in 3D shapes. This is a quick test done with it: A cylinder with diffuse color Color.web(“#ffff0080”), is added on top of a box and two spheres. group.getChildren().addAll(sphere1, sphere2, box, cylinder); There’s no depth sort algorithm though, meaning that order of how 3D shapes are added to the scene … Read more
Here’s an algorithm that allows you to generate points randomly distributed on the unit sphere.
Today, I went drinking with my colleagues, and after five beers and some tequillas I found this question and thought, “have at ya!” So I was struggling for a while but then I found a simple solution using MEX. I theorized that the OpenGL context, created by the last window, could be left active and … Read more
Challenge accepted! First, you can write a vertex shader that takes a grayscale image and uses it as a heightmap, and includes a varying float (called vAmount below) to pass to the fragment shader to determine the texture(s) to display(blend) at that point. uniform sampler2D bumpTexture; uniform float bumpScale; varying float vAmount; varying vec2 vUV; … Read more
The cube algorithm will not give an even distribution over the sphere – in particular the areas near the projections of the corners will have the densest distribution of points and near the centers of the faces of the cubes will be the lowest. You can understand this intuitively since the volume of cube projected … Read more