Method getPointOnPath

Engine/source/Verve/VPath/VPathEditor.cpp:785–833

//-----------------------------------------------------------------------------

bool VPathEditor::getPointOnPath( VPath *pPath, const Gui3DMouseEvent &pEvent, S32 &pNode, MatrixF &pTransform )
{
    if ( pPath->getNodeCount() < 2 )
    {
        // Start / End Points.
        const Point3F pt0 = pEvent.pos;
        const Point3F pt1 = pEvent.pos + pEvent.vec * gProjectDistance;

        // Create Intersection Plane.
        const PlaneF plane( pPath->getPosition(), VPath::gBezierUp );

        // Intersection Point.
        Point3F intersectionPoint;
        if ( !plane.intersect( pEvent.pos, pEvent.vec, &intersectionPoint ) )
        {
            // No Intersection.
            return false;
        }

        // I'th Node.
        pNode = pPath->getNodeCount();
        // Set Identity.
        pTransform.identity();
        // Set Position.
        pTransform.setPosition( intersectionPoint );

        // Return.
        return true;
    }

    switch ( pPath->mPathType )
    {
        case VPath::k_PathLinear : 
            {

                return getPointOnLinearPath( pPath, pEvent, pNode, pTransform );

            } break;

        case VPath::k_PathBezier :
            {

                return getPointOnBezierPath( pPath, pEvent, pNode, pTransform );

            } break;
    }

    return false;
}

bool VPathEditor::getPointOnLinearPath( VPath *pPath, const Gui3DMouseEvent &pEvent, S32 &pNode, MatrixF &pTransform )
{