Draw arcs

[Barjor]

Me again

To draw lines and points are easy with DirectX but I can't find any built ins for arc or ellipses or splines. I could create a circle by drawing alot of small lines but I wonder if that is the right way to do it. What is the best way to draw a circle with DirectX?

~Barjor

[MrWizard]

There are functions in GDI for drawing ellipses. There are also built in GDI functions for drawing Bezier Curves. There is not, that I know of, any functions for drawing splines. You can render them yourself though if you know the De Boor algorithm. If you need help with splines let me know and I can help you.

I assume you know how to use the GDI stuff with DirectX. If you don't, all you do is get a DC to the surface , perform the operation then release the DC.

[Barjor]

Originally posted by MrWizard

I assume you know how to use the GDI stuff with DirectX. If you don't, all you do is get a DC to the surface , perform the operation then release the DC.

Will the GDI arc be rotated when I rotate my directX stuff?. If not it sounds easier to draw an arc with DirectX LineList then to modify the GDI arc to move with the DirectX rotation matrix. I have actually never combined GDI with directX, sounds cool, will give it a try later

Thanks for the help