Method SetUp

apps/ospTestSuite/test_volumetric.cpp:49–139

}

void TextureVolumeTransform::SetUp()
{
  Base::SetUp();

  camera.setParam("position", vec3f(.66f, .66f, -2.5f));
  camera.setParam("direction", vec3f(0.f, 0.f, 1.f));
  camera.setParam("up", vec3f(0.f, 1.f, 0.f));

  // Create transfer function
  cpp::TransferFunction transferFun("piecewiseLinear");
  {
    std::vector<vec3f> colors = {vec3f(1.f, 0.f, 0.f),
        vec3f(0.f, 1.f, 0.f),
        vec3f(0.f, 1.f, 1.f),
        vec3f(1.f, 1.f, 0.f),
        vec3f(1.f, 1.f, 1.f),
        vec3f(1.f, 0.f, 1.f)};
    std::vector<float> opacities = {1.f, 1.f};

    transferFun.setParam("value", range1f(-10000.f, 100.f));
    transferFun.setParam("color", cpp::CopiedData(colors));
    transferFun.setParam("opacity", cpp::CopiedData(opacities));
    transferFun.commit();
  }

  // Create volumetric model
  cpp::Volume volume = CreateTorus(256);
  volume.commit();

  // Create volume texture
  cpp::Texture tex("volume");
  tex.setParam("volume", volume);
  tex.setParam("transferFunction", transferFun);
  tex.commit();

  // Create a single sphere geometry
  cpp::Geometry sphere("sphere");
  {
    sphere.setParam("sphere.position", cpp::CopiedData(vec3f(0.f)));
    sphere.setParam("radius", 0.51f);
    sphere.commit();
  }

  // Prepare material array
  constexpr uint32_t cols = 2;
  constexpr uint32_t rows = 2;
  std::array<cpp::Material, cols * rows> materials;
  {
    // Create materials
    for (uint32_t i = 0; i < cols * rows; i++) {
      cpp::Material mat("obj");
      mat.setParam("map_kd", tex);
      mat.commit();
      materials[i] = mat;
    }

    // Set scale
    materials[1].setParam("map_kd.transform", affine3f::scale(vec3f(1.2f)));