in my opengl application i have a Bézier curve in 3d space and i want to to move an object along it.
I\'m an iphone developer, but this question is about geometry. I have a simple rectangle (maybe a photo). The user touches this photo at a point and drags their finger to a new point:
I have a box defined by 8 points. From those points, I calculate开发者_JAVA百科 axes and create rotation matrix as follows:
I 开发者_如何学运维need an equation to find point F. Point A, B, and D are known. Point F is unknown. Point F is on line AB. Line AB is perpendicular to line DF. What is the equation for F?I\'m assumi
I\'m trying to make a sort of pie-chart shape on a canvas element, however I can\'t seem to find any function that does this by itself. I only seem to be able to draw full circles and segments. Is the
I am trying to build a polygonal shape tool and have it calculate against its area to find if a point exists inside or out side the area.
Given 2 points A开发者_如何学JAVA and B belonging to a sphere with a given Radius R. I want to find the sphere whose center has the minimum distance to a given point G.
I have a curved div created with css3 border radius (the image part). I have text lines next to it that I would like to align 20px or so off the curve, like so (cant post images, cant remember old log
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I\'ve got a databound series of predefined shapes (Path with Data=\"\" set) which each trigger the same event when clicked.
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