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rotation problem

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hi. i need to rotate a door but i don't know how to rotate through hinge. how can i translate the rotation axis. i have to keep that code structure, what will change or add to it ? void DrawDoor (float x,float y,float z,float angle){ glPushMatrix(); glTranslatef(x,y,z); glRotatef(angle,0.0f,1.0f,0.0f); glScalef(5.0f,10.0f,0.3f); BaseDoor(0.0f,0.0f,0.0f); glPopMatrix(); }

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Why don't you try this ?


Align the door parallel to Y axis (you may have to rotate it !!)
Translate your door to align it on along the Y axis
Rotate the door about Y axis (Here you perform the actual rotation)
Translate back
Perform another rotation to get back to the original position.


You will have to replace your glRotate call with the above procedure .

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