Debug drawer only draws diamonds when I want spheres?

[3DModelerMan]

I implemented the btIDebugDraw interface and it works. I got lines rendering, and boxes look fine. The problem is that when I add a sphere, the sphere is drawn as a diamond even tghough I emplemented a drawSphere function. Is there a flag somewhere that switches whether to use the default sphere drawing or not?

[dphil]

btIDebugDraw declares two drawSphere functions, and my experience in the past (and by looking at Bullet's source code) is that this one:

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virtual void 	drawSphere (const btVector3 &p, btScalar radius, const btVector3 &color);

is never called. The one you should implement/override is

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virtual void	drawSphere(btScalar radius, const btTransform& transform, const btVector3& color);

If you look at the default implementation of the above function in btIDebugDraw.h, you'll see where the diamond comes from:

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	virtual void	drawSphere(btScalar radius, const btTransform& transform, const btVector3& color)
	{
		btVector3 start = transform.getOrigin();

		const btVector3 xoffs = transform.getBasis() * btVector3(radius,0,0);
		const btVector3 yoffs = transform.getBasis() * btVector3(0,radius,0);
		const btVector3 zoffs = transform.getBasis() * btVector3(0,0,radius);

		// XY 
		drawLine(start-xoffs, start+yoffs, color);
		drawLine(start+yoffs, start+xoffs, color);
		drawLine(start+xoffs, start-yoffs, color);
		drawLine(start-yoffs, start-xoffs, color);

		// XZ
		drawLine(start-xoffs, start+zoffs, color);
		drawLine(start+zoffs, start+xoffs, color);
		drawLine(start+xoffs, start-zoffs, color);
		drawLine(start-zoffs, start-xoffs, color);

		// YZ
		drawLine(start-yoffs, start+zoffs, color);
		drawLine(start+zoffs, start+yoffs, color);
		drawLine(start+yoffs, start-zoffs, color);
		drawLine(start-zoffs, start-yoffs, color);
	}

[3DModelerMan]

Thanks. I'll implement that one too and see if I can get it working.