Has anyone written a btIDebugDraw for Irrlicht

[Adversus]

There's an openGL one that come with the examples that I'm guessing I can use however for portability (when the OpenGL driver isn't used) it would be nice.

Has anyone taken the time to do this?

Cheers,
Adversus.

[hybrid]

Who's btl, and where can it help?

[rogerborg]

Your search - btldebugdraw - did not match any documents.

[Sylence]

But btIDebugDraw does

[hybrid]

Sounds like the Debug draw methods one can enable for a scene node in Irrlicht

[JP]

Check out CDebugRenderer.cpp in my IrrPhysx source, it's probably similar to that... In a way...

Basically it looks like you've just got to define functions that draw triangles and lines etc. If you look at IVideoDriver in the Irrlicht docs/API you should be able to figure out how to handle that.

[dlangdev]

Yeah, I've seen this one and used that in one demo using Humus3D, it wasn't Irrlicht code. Irrlicht has its own debug renderer, tho.

Sorry if that didn't help.

[pc0de]

Here's a modified version of what I'm using (debug lines only):

Code: Select all

static void BulletToIrr(const btVector3& in, vector3df& result)
{
    result.set(in.getX(),in.getY(),-in.getZ());
}

class BulletDebugDraw : public btIDebugDraw
{
    public:
    //
    // debug functionality
    //
    void drawLine(const btVector3& from,const btVector3& to,const btVector3& color);
    {
        vector3df v1,v2;
        BulletToIrr(from,v1);
        BulletToIrr(to,v2);

        // handle bullet simplex debug color bug...
        SColor icolor((u32)color.x()*255.0, (u32)color.y()*255.0, (u32)color.z()*255.0);
        S3DVertex vert1(v1,v1,icolor,vector2df());
        S3DVertex vert2(v2,v2,icolor,vector2df());
        m_debugNode->addLine(vert1,vert2);
    }
    void drawContactPoint(const btVector3& PointOnB,const btVector3& normalOnB,float distance,int lifeTime,const btVector3& color)
    {
    }
    void draw3dText(const btVector3& location,const char* textString)
    {
    }
}

m_debugNode is a custom scene node that is used to accumulate and render the debug lines. It's reset in the render loop. You can view sample code for it at: m_debugNode

A bit incomplete but hopefully you get the idea.