I have a parametric curve, say two vectors of doubles where the parameter is the index, and I have to calculate the angle of the tangent to this curve at any given point (index).开发者_如何学C
I\'m really stuck on how to go about programming this. How to draw a circle in Java with a radius and points around the edge?
I have the coordinates of three points on a plane.Let\'s call them X1,Y1, X2,Y2, X3 Y3. I need to calculate X4,Y4 but all I know is:
Two lines in 3d are projected onto 2d screen, and their projections intersect at a point which can be calculated.
I wish to generate rays from the camera through the viewing plane. In order to do this, I need my camera position (\"eye\"), the up, right, and towards vectors (where towards is the vector from the ca
In school we have a really hard problem, and still no one from the students has solved it yet. Take a look at the picture below:
I have a JPanel with a Grid Layout. In the \"cells\" of the grid I can put different elements (for example JButtons). There is no problems with that. But now I want to put a filled circle in some of t
I have a bezier path library to draw complex bezier paths without problem. Now, I need to know how to read a text or font and extract its path information to draw it as a path instead of as text.
I want to project my Polygon along a vector to a plane in 3d Space. I would preferably use a single transformation matrix to do this, but I don\'t know how to build a matrix of this kind.
I was having problems while intersecting two geometries, getting a TopologyException probably due to a rounding error during the operation, then I read this fix and tried a buffer(0) on both input geo
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