2018-soft-3d-renderer/include/geometry.h

#ifndef GEOMETRY_H

#include "color.h"
#include "engine.h"
#include "point.h"
#include <cstdint>


#define VERTEX_LIMIT (20000)
#define FACE_LIMIT (30000)
#define MATERIAL_LIMIT (10)


struct Texture
{
    ColorU32 **texels;
    unsigned int width;
    unsigned int height;
};

struct TextureList
{
    Texture data[MATERIAL_LIMIT];
    size_t size;
};

struct Material
{
    ColorF32 ambient;
    ColorF32 diffuse;
    ColorF32 specular;
    float specularExp;
    float opacity;
};

struct MaterialList
{
    Material data[MATERIAL_LIMIT];
    size_t size;
};

struct UV
{
    float u;
    float v;
};

struct UVList
{
    UV data[VERTEX_LIMIT];
    size_t size;
};

struct Vertex
{
    Point point;
    Vector normal;
    ColorF32 color;
};

struct VertexList
{
    Vertex data[VERTEX_LIMIT];
    size_t size;
};

struct Face
{
    int vertIndex[3];
    int uvIndex[3];
    int materialIndex;
};

struct FaceList
{
    Face data[FACE_LIMIT];
    size_t size;
};

struct Mesh
{
    inline Mesh(void)
    {
        position.x = 0.0f;
        position.y = 0.0f;
        position.z = 0.0f;

        rotation[0] = 0.0f;
        rotation[1] = 0.0f;
        rotation[2] = 0.0f;

        scale = 1.0f;
    }

    Point position;
    float rotation[3];
    float scale;
};


// PUBLIC FUNCTIONS
void ClipAndCull(
        VertexList &verts, FaceList &localFaces,
        FaceList &transFaces, Point &camPosition);

void RenderMesh(
        Engine_Buffer &buffer, FaceList &faces, VertexList &verts,
        UVList &uvs, TextureList &textures);


#define GEOMETRY_H
#endif