Method onRender2D

Engine/source/forest/editor/forestSelectionTool.cpp:424–467

static Frustum gDragFrustum;

void ForestSelectionTool::onRender2D()
{
   // Draw drag selection rect.
   if ( mDragSelect && mDragRect.extent.x > 1 && mDragRect.extent.y > 1 )
      GFX->getDrawUtil()->drawRect( mDragRect, mDragRectColor );

   // update what is in the selection
   if ( mDragSelect )
      mDragSelection.clear();

   // Determine selected objects based on the drag box touching
   // a mesh if a drag operation has begun.
   if ( mDragSelect && mDragRect.extent.x > 1 && mDragRect.extent.y > 1 )
   {
      // Build the drag frustum based on the rect
      F32 wwidth;
      F32 wheight;
      F32 aspectRatio = F32(mEditor->getWidth()) / F32(mEditor->getHeight());

      const CameraQuery &lastCameraQuery = mEditor->getLastCameraQuery();
      if(!lastCameraQuery.ortho)
      {
         wheight = lastCameraQuery.nearPlane * mTan(lastCameraQuery.fov / 2);
         wwidth = aspectRatio * wheight;
      }
      else
      {
         wheight = lastCameraQuery.fov;
         wwidth = aspectRatio * wheight;
      }

      F32 hscale = wwidth * 2 / F32(mEditor->getWidth());
      F32 vscale = wheight * 2 / F32(mEditor->getHeight());

      Point2I editorPosition = mEditor->getPosition();
      F32 left = (mDragRect.point.x - editorPosition.x) * hscale - wwidth;
      F32 right = (mDragRect.point.x - editorPosition.x + mDragRect.extent.x) * hscale - wwidth;
      F32 top = wheight - vscale * (mDragRect.point.y - editorPosition.y);
      F32 bottom = wheight - vscale * (mDragRect.point.y - editorPosition.y + mDragRect.extent.y);
      gDragFrustum.set(lastCameraQuery.ortho, left, right, top, bottom, lastCameraQuery.nearPlane, lastCameraQuery.farPlane, lastCameraQuery.cameraMatrix );

      mForest->getData()->getItems( gDragFrustum, &mDragSelection );      
   }
}

bool ForestSelectionTool::updateGuiInfo()
{