The point or points at which two or more shapes cross or overlap one another.

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Determine if Plane is seen by Camera

If I have an arbitrary plane (center and normal) or a quad (center, normal and width and height) and a camera (frustum, projection & view matrix, etc). Then how would I go about calculating if the ...
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246 views

Sketchy results from ray-plane intersection code

I've set up a demo with simple first-person controls using C++ and OpenGL, and it seems to work reasonably well. My goal is this: when the player looks at a plane and clicks the left mouse button, ...
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How to represent ray and line segment in parametric form?(Visibility)

I am trying to implement this algorithm but am not sure how I am supposed to represent my ray and my line segments(walls). For the r_px/r_py do I just use the position of the light? For the ...
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Displaying intersection by removing vertices

I am using WPF, using the MeshGeometry3D class to build up my model. I have 2 pipes intersecting each other, and I would like to remove the region of intersection (meaning erase the portion of pipe 1 ...
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Robust algorithm for ray-isosurface intersection (with depth discontinuities)

For Dual Contouring, I need to calculate the precise intersection '(zero-crossing point') of any line ('segment', 'ray') with the given isosurface ('distance field', 'density source'). The algorithm ...
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35 views

Locate point of collision for two moving lines

I am trying to implement a continuous collision detection system that checks collision between two polygons for a certain time step, concave or convex. It makes the simplification that the path ...
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225 views

Most efficient AABB - Ray intersection algorithm for input/output distance calculation

Thanks to the following thread : most efficient AABB vs Ray collision algorithms I have seen very fast algorithm for ray/AABB intersection point computation. Unfortunately, most of the recent ...
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Precalculating timespan of bullet collision on cubic bezier curve circles?

I'm fairly new to game logics, C#/XNA (The language/library of choice) and bezier curves in general, and is stuck in my current project. I'm going to try to explain as thoroughly as I can what the ...