Shadow Casting Issue

[KrisG]

So I've been playing around with Irrlicht for a while, just trying to get a simple animation of a tennis ball on a tennis court. I've just added a shadow to the ball, but for some reason, it looks like the shadow is going through the mesh. I'm not sure why this is. I've played around with the material flags and all, and the ball shadow itself looks correct. I just need to get rid of the line. A screen shot is below:



The code attached is the part that deals with creating and animating the ball, and one part of the mesh. Any help would be appreciated!

Code: Select all

 
  scene::IAnimatedMesh* ball_node = smgr->addSphereMesh("ball", 6.7);
  scene::IAnimatedMeshSceneNode* node = smgr->addAnimatedMeshSceneNode(ball_node);
  //scene::ISceneNode * node = smgr->addSphereSceneNode(6.7);
 
  //scene::ISceneNode * node = smgr->addSphereSceneNode(.067);
  if (node)
  {
    node->setPosition(core::vector3df(12, 5.485, 1));
    node->setMaterialTexture(0, driver->getTexture("C:/Users/kgalane/Desktop/fun with meshes/tennisballjpg.jpg"));
    node->setMaterialFlag(video::EMF_LIGHTING, false);
    node->addShadowVolumeSceneNode();
    node->setMaterialFlag(video::EMF_NORMALIZE_NORMALS, true);
    core::array<core::vector3df> animation_points;
 
    for (std::vector<BallPoint>::iterator iter = points.begin(); iter != points.end() ; iter++)
    {
      animation_points.push_back(core::vector3df((*iter).X, (*iter).Y, (*iter).Z));
    }
 
    ITimer * timer = Device->getTimer();
    timer->setSpeed(15.0);
    scene::ISceneNodeAnimator* anim = smgr->createFollowSplineAnimator(Device->getTimer()->getTime(), animation_points);
    if (anim)
    {
      node->addAnimator(anim);
      anim->drop();
    }
  }
 
  scene::IAnimatedMesh* north_mesh = smgr->getMesh("C:/Users/kgalane/Desktop/fun with meshes/Court_Grass_North_ALT.obj");
  if (!north_mesh)
  {
    Device->drop();
    return 1;
  }
  scene::IAnimatedMeshSceneNode* north_mesh_node = smgr->addAnimatedMeshSceneNode(north_mesh);
 
  if (north_mesh_node)
  {
    north_mesh_node->setMaterialFlag(video::EMF_LIGHTING, true);
    north_mesh_node->setMaterialTexture(0, driver->getTexture(".../fun with meshes/tex/Court_North_Grass.png"));
    north_mesh_node->setMaterialType(EMT_SOLID);
    north_mesh_node->setMaterialFlag(EMF_BACK_FACE_CULLING , false );
    north_mesh_node->setMaterialFlag(EMF_NORMALIZE_NORMALS, true);
 
  }
 
 

[CuteAlien]

This happens usually when the model is not closed. Which is strange for a ball - but maybe check that first.

[LunaRebirth]

This is exactly what problem I'm currently having so I've disabled shadows as this was frustrating.
Couldn't figure it out, though. Nothing I can see wrong. Just an Irrlicht bug.

[KrisG]

This happens usually when the model is not closed. Which is strange for a ball - but maybe check that first.

Strange was my first thought too. I'm not sure what you mean by checking if the model is closed though. Could you elaborate? I'm still kinda new to Irrlicht.

[CuteAlien]

Basically means that if you would fill water into your model it should not leak out anywhere.

[BlindSide]

Hey mate,

This is a drawback of volume shadows, you can try shadow mapping as an alternative. Google shadow mapping or check out the link in my sig if you want a relatively easy to use library.

Cheers,