Method drawLine

Components/Bullet/src/OgreBullet.cpp:865–889

* ============================================================================================= * BtDebugDrawer * ============================================================================================= */ ------------------------------------------------------------------------------------------------

 */
//------------------------------------------------------------------------------------------------
void DebugDrawer::drawLine(const btVector3& from, const btVector3& to, const btVector3& color)
{
    if (mLines.getSections().empty())
    {
        const char* matName = "Ogre/Debug/LinesMat";
        auto mat = MaterialManager::getSingleton().getByName(matName, RGN_INTERNAL);
        if (!mat)
        {
            mat = MaterialManager::getSingleton().create(matName, RGN_INTERNAL);
            auto p = mat->getTechnique(0)->getPass(0);
            p->setLightingEnabled(false);
            p->setVertexColourTracking(TVC_AMBIENT);
        }
        mLines.setBufferUsage(HBU_CPU_TO_GPU);
        mLines.begin(mat, RenderOperation::OT_LINE_LIST);
    }
    else if (mLines.getCurrentVertexCount() == 0)
        mLines.beginUpdate(0);

    ColourValue col(color.x(), color.y(), color.z());
    mLines.position(convert(from));
    mLines.colour(col);
    mLines.position(convert(to));
    mLines.colour(col);
}

struct DeepPenetrationContactResultCallback : public btManifoldResult
{