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Translation question

Started by middy Nov 17, 2004 at 2:32 PM 1 replies 500+ views

Original Post

Nov 17, 2004 at 2:32 PM

Well I have several objects from one coordinate system I want to display in another coordinate system. With same relative distance to a reference point. Said in another way. I have objects in the world coordinate system, that I want to display in another coordinate system. The reference point and the objects are all in world coordinates. Pseudo code: PushMatrix(); //draw reference point at (0,0,0) loadIdentity() draw(); for all relative points draw with relative distance and direction to reference point, but in some other scale. PopMatrix(); But how do I do this. How do I translate the objects to my little local coordinate system

wendigo23

Nov 17, 2004 at 2:51 PM

You have object a (transform A in world space) and object b (transform B in world space). a's transform relative to b is B^-1 * A.

middy

Author

middy

Nov 17, 2004 at 3:54 PM

I am not too sure I get you.

But let me try this.

TranslateTo(A);
draw(A);
matrix model = getModelViewMatrix();

vector b' = transform(model,B)
TranslateTo(b');
draw(b);

Something like this?

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