Method drawArrow

Engine/source/gfx/gfxDrawUtil.cpp:1427–1459

}

void GFXDrawUtil::drawArrow( const GFXStateBlockDesc &desc, const Point3F &start, const Point3F &end, const ColorI &color, F32 baseRad )
{   
   GFXTransformSaver saver;

   // Direction and length of the arrow.
   VectorF dir = end - start;
   F32 len = dir.len();
   dir.normalize();   
   len *= 0.2f;      

   // Base of the cone will be a distance back from the end of the arrow
   // proportional to the total distance of the arrow... 0.3f looks about right.
   Point3F coneBase = end - dir * len * 0.3f;

   // Calculate the radius of the cone given that we want the cone to have
   // an angle of 25 degrees (just because it looks good).
   F32 coneLen = (baseRad != 0.0f) ? baseRad * 4.0 :( end - coneBase ).len();
   F32 coneDiameter = (baseRad != 0.0f) ? baseRad*4.0f : mTan( mDegToRad(25.0f) ) * coneLen;

   // Draw the cone on at the arrow's tip.
   drawCone( desc, coneBase, end, coneDiameter / 2.0f, color );

   // Get the difference in length from
   // the start of the cone to the end
   // of the cylinder so we can put the
   // end of the cylinder right against where
   // the cone starts.
   Point3F coneDiff = end - coneBase;

   // Draw the cylinder.
   F32 stickRadius = (baseRad != 0.0f) ? baseRad : len * 0.025f;
   drawCylinder( desc, start, end - coneDiff, stickRadius, color );
}

void GFXDrawUtil::drawFrustum( const Frustum &f, const ColorI &color )
{