teapot.h

#ifndef OE_SCENE_PRIMITIVE_TEAPOT_H
#define OE_SCENE_PRIMITIVE_TEAPOT_H
 
#include "../../lib/teapot.h"
#include "../loader/bezier.h"
 
namespace oe::scene::primitive
{
    template <typename VertexType = Vertex>
    struct Teapot : public Mesh<VertexType>
    {
        Teapot(const uint16_t lod = 8)
        {
            loader::Bezier<VertexType> bezierLoader(loader::BezierPatchType::Bicubic);
            std::vector<VertexType> control_points;
            constexpr const auto patch_size = 16;
 
            for (uint16_t id_patch = 0; id_patch < teapotNumPatches; ++id_patch)
            {
                // Debug to fix normal problem
                //if (id_patch != 23)
                //    continue;
 
                for (uint16_t i = 0; i<patch_size; ++i)
                {
                    const uint16_t id_vertex = teapotPatches[id_patch][i]-1; // Indices of teapot control points begins at 1
 
                    auto teapot_vertex = teapotVertices[id_vertex];
 
                    control_points.push_back({
                        // Note : Y and Z swapped in source date (in Newell times, UP was Z axis whereas in Oxygen Engine we use Y)
                        .position = glm::vec3(teapot_vertex[0], teapot_vertex[2], teapot_vertex[1])
                    });
                }
            }
 
            bezierLoader.setControlPoints(control_points);
 
            bezierLoader.buildMesh({
                .lod = lod
            }, *this);
        }
    };
}
 
#endif