Quad3d.cpp

#include "Quad3d.h"
#include "common/maths/Vec.h"
 
namespace Vivid
{
    // TODO: Use multiple vertices to have correct normals for each vertex
    Quad3d::Quad3d(float size, Maths::Vec3 col)
    {
        m_Size = (float)size;
        const float const_Size = m_Size;
 
        // TODO: Correct culling
        Maths::Vec3 pos[8] = {
            Maths::Vec3(-const_Size, const_Size, -const_Size),
            Maths::Vec3(const_Size, const_Size, -const_Size),
            Maths::Vec3(-const_Size, -const_Size, -const_Size),
            Maths::Vec3(const_Size, -const_Size, -const_Size),
            Maths::Vec3(-const_Size, const_Size, const_Size),
            Maths::Vec3(const_Size, const_Size, const_Size),
            Maths::Vec3(-const_Size, -const_Size, const_Size),
            Maths::Vec3(const_Size, -const_Size, const_Size),
        };
 
        Maths::Vec2 tex[8] = {
            Maths::Vec2(0.0, 0.0),
            Maths::Vec2(1.0, 0.0),
            Maths::Vec2(1.0, 1.0),
            Maths::Vec2(0.0, 1.0),
            Maths::Vec2(0.0, 0.0),
            Maths::Vec2(1.0, 0.0),
            Maths::Vec2(1.0, 1.0),
            Maths::Vec2(0.0, 1.0),
        };
 
        Maths::Vec3 color[8] = {
            col,
            col,
            col,
            col,
            col,
            col,
            col,
            col,
        };
 
        Maths::Vec3 normal[8] = {
            Maths::Vec3(1.0, 1.0, 1.0),
            Maths::Vec3(1.0, 1.0, 1.0),
            Maths::Vec3(1.0, 1.0, 1.0),
            Maths::Vec3(1.0, 1.0, 1.0),
            Maths::Vec3(1.0, 1.0, 1.0),
            Maths::Vec3(1.0, 1.0, 1.0),
            Maths::Vec3(1.0, 1.0, 1.0),
            Maths::Vec3(1.0, 1.0, 1.0),
        };
 
        unsigned int ind[12 * 3] = {
            0, 1, 2, // Side 0
            2, 1, 3,
            4, 0, 6, // Side 1
            6, 0, 2,
            7, 5, 6, // Side 2
            6, 5, 4,
            3, 1, 7, // Side 3
            7, 1, 5,
            4, 5, 0, // Side 4
            0, 5, 1,
            3, 7, 2, // Side 5
            2, 7, 6
        };
 
        m_Pos.resize(8, Vertex());
        m_Ind.resize(12 * 3, int());
 
        for (int i = 0; i < 8; i++)
        {
            m_Pos[i].position = pos[i];
            m_Pos[i].texcoord = tex[i];
            m_Pos[i].tangent = color[i];
            m_Pos[i].normal = normal[i];
        }
 
        int i = 0;
        for (auto x : ind)
        {
            m_Ind[i] = x;
            i++;
        }
    }
}