Method createGarbageHair

tutorials/common/scenegraph/geometry_creation.cpp:595–629

  }

  Ref<SceneGraph::Node> SceneGraph::createGarbageHair (int hash, size_t numHairs, bool mblur, Ref<MaterialNode> material)
  {
    RandomSampler sampler;
    RandomSampler_init(sampler,hash);
    Ref<SceneGraph::HairSetNode> mesh = new SceneGraph::HairSetNode(RTC_GEOMETRY_TYPE_FLAT_BEZIER_CURVE,material,BBox1f(0,1),mblur?2:1);

    mesh->hairs.resize(numHairs);
    for (size_t i=0; i<numHairs; i++) {
      const unsigned v0 = (RandomSampler_getInt(sampler) % 32 == 0) ? RandomSampler_getUInt(sampler) : unsigned(4*i);
      mesh->hairs[i] = HairSetNode::Hair(v0,0);
    }

    mesh->positions[0].resize(4*numHairs);
    for (size_t i=0; i<4*numHairs; i++) {
      const float x = cast_i2f(RandomSampler_getUInt(sampler));
      const float y = cast_i2f(RandomSampler_getUInt(sampler));
      const float z = cast_i2f(RandomSampler_getUInt(sampler));
      const float r = cast_i2f(RandomSampler_getUInt(sampler));
      mesh->positions[0][i] = Vec3ff(x,y,z,r);
    }

    if (mblur) 
    {
      mesh->positions[1].resize(4*numHairs);
      for (size_t i=0; i<4*numHairs; i++) {
        const float x = cast_i2f(RandomSampler_getUInt(sampler));
        const float y = cast_i2f(RandomSampler_getUInt(sampler));
        const float z = cast_i2f(RandomSampler_getUInt(sampler));
        const float r = cast_i2f(RandomSampler_getUInt(sampler));
        mesh->positions[1][i] = Vec3ff(x,y,z,r);
      }
    }

    return mesh.dynamicCast<SceneGraph::Node>();
  }

  Ref<SceneGraph::Node> SceneGraph::createGarbageSubdivMesh (int hash, size_t numFaces, bool mblur, Ref<MaterialNode> material)
  {