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`i'm new to OpenLayers and i am looking for some help drawing lines on a map, i've been trying various things from various different posts about drawing LineStrings but i can't get it to work! I just need to figure out how to draw a line b...`
`Suppose I have a three.js mesh, and a velocity vector3.  The velocity is being altered elsewhere, and then added to the mesh.position every frame.  What I want is for the mesh.rotation to correspond to the velocity, i.e, the mesh is an arrow that alw...`
`In my project, I would like to draw a line from point X to point Y.  While I know the position of point X, I only know the angle and the distance of point Y.  So my problem is to get the coordinates of point Y by the angle (from point X) and the dist...`
`I'm trying to find the row, column in a 2d isometric grid of a screen space point (x, y)   Now I pretty much know what I need to do which is find the length of the vectors in red in the pictures above and then compare it to the length of the ve...`
`In Three.JS, I am capable of rotating an object about its origin. If I were to do this with a line, for instance, the line rotates, but the positions of its vertices are not updated with their new locations. Is there some way to apply the rotation ma...`
`I want to write applications in JavaScript that require a large amount of numerical computation. However, I'm very confused about the state of efficient linear-algebra-like computation in client-side JavaScript. There seems to be many approaches,...`
`i want to use the phones accelerometer for rolling a Ball in a Ball. The movement works correctly, the problem is that when the ball hits the Wall. How can i get a smooth rolling animation that the ball slides along the inner side of the bigger ball?...`
`I'm looking for a way to overlay the visible areas of a transparent black silhouette PNG file with a certain pattern.   Is there a CSS, JavaScript, mixed solution for this?  Example: I have one image of a weapon silhoutte and a set of camo patter...`
`I'm doing some physics simulations which of course involve vectors. This has become very difficult for me because to the best of my knowledge javascript doesn't support anything like this...  #with the aid of numpy >>> a = np.array([...`