 |
Q3A Maps And Curved Surfaces
Submitted by |
I implemented a small .bsp viewer in my engine and wondered about the squished look of pipes / cylindrical objekts in the level.
Normaly Q3A uses C1 bezier curves (3 controlpoints per line / 9 per patch)
The bezier function calculate a weight for each of the 3 control points from a value
alpha [0..1]:
weight1= (1-alpha)²
weight2=2*(1-alpha)(alpha)
weight3= alpha² |
But you can use a trigonometrical interpolation here, too.
The weights would now be the following:
weight1= 1-cos(alpha*PI / 2);
weight3= 1- sin(alpha*PI / 2);
weight2= 1-weight1-weight3; |
Now you will see really curved surfaces :).. and real cylinders
w.b.r.
M.Knuth
|
The zip file viewer built into the Developer Toolbox made use
of the zlib library, as well as the zlibdll source additions.
|
