Questions tagged [2d-graphics]
52 questions
3
votes
1 answer
Douglas-Peuker and equal distances
I have a polyline and I want to simplify it with Douglas-Peucker. It's an easy algorithm, but what if there are points with the same distance. What point should I select? Is there a reasonable solution?
rr84
- 105
- 4
3
votes
2 answers
Line segments overlapping
I have implemented line segments intersetion test and at the very same test I want to include the fact that if two line segments overlap each other partially or fully , it will be flagged as no intersection.
Some hint to it would be great to have!
sajis997
- 1,279
- 1
- 10
- 15
1
vote
1 answer
How can I transform an ellipse into a circle?
I have an ellipse which has -45 degree axis.
How can I transform the ellipse into a circle? Can I use shear transformation along the x/y axis?
Ick-Sung Choi
- 11
- 2
1
vote
0 answers
distribute the bounding area into grid space
I have a bounding area of a contour after the slicing operation. Now to generate the tool-path over the contour, I need to distribute the bounding area into grid space so that each each cell maintain a certain precomputed width.
I am doing the math…
sajis997
- 1,279
- 1
- 10
- 15
1
vote
0 answers
Newbie Issue with X11 Double buffering. Request help with code
I botched together the following code to do a simple rotating radar display.
How can I eliminate the flicker of the line being drawn and then drawn over? Can I use double buffering somehow?
How can I get mouse and keyboard inputs and process/parse…
John Telek
- 11
- 1
0
votes
1 answer
Rigorous example of early graphics system
Here is a paragraph of Shreiner and Angel's Interactive Computer Graphics:
"Early graphics systems used general-purpose computers with the standard von
Neumann architecture. Such computers are characterized by a single processing unit
that processes…
Sam
- 101
- 1