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...
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 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([...
I found a vector library on the Internet that even works with IE6!  http://raphaeljs.com/index.html  It's amazing.  Now my question is it better than the upcoming HTML5 <canvas>?  The only reason I ask is that it could be years before Micro...
I have a long time project: a basic vector graphic tool which runs in browser and uses SVG and Javascript (maybe you have seen somekind of these elsewhere). The tool has only very limited set of functions, because the audience is restricted and the p...
I've searched for the answer to this and have tried many proposed solutions, but none seem to work.  I've been struggling with this forever so any insight is greatly appreciated.  I have 3 shapes (vectors I suppose) on a JS canvas, each with...

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