vimix/GlmToolkit.h

#ifndef GLMTOOLKIT_H
#define GLMTOOLKIT_H

#include <vector>
#include <glm/glm.hpp>

namespace GlmToolkit
{

// get Matrix for these transformation components
glm::mat4 transform(glm::vec3 translation, glm::vec3 rotation, glm::vec3 scale);
void inverse_transform(glm::mat4 M, glm::vec3 &translation, glm::vec3 &rotation, glm::vec3 &scale);

class AxisAlignedBoundingBox
{
public:
    AxisAlignedBoundingBox();
    AxisAlignedBoundingBox(const AxisAlignedBoundingBox &D);
    void operator = (const AxisAlignedBoundingBox &D );

    // test
    inline bool isNull() const { return mMin.x > mMax.x || mMin.y > mMax.y || mMin.z > mMax.z;}
    inline glm::vec3 min() const { return mMin; }
    inline glm::vec3 max() const { return mMax; }
    glm::vec3 center(bool ignore_z = true) const;
    glm::vec3 scale(bool ignore_z = true) const;
    bool intersect(const AxisAlignedBoundingBox& bb, bool ignore_z = true) const;
    bool contains(const AxisAlignedBoundingBox& bb, bool ignore_z = true) const;
    bool contains(glm::vec3 point, bool ignore_z = true) const;

    // build
    void extend(const glm::vec3& point);
    void extend(std::vector<glm::vec3> points);
    void extend(const AxisAlignedBoundingBox& bb);

    AxisAlignedBoundingBox translated(glm::vec3 t) const;
    AxisAlignedBoundingBox scaled(glm::vec3 s) const;
    AxisAlignedBoundingBox transformed(glm::mat4 m) const;

    friend bool operator<(const AxisAlignedBoundingBox& A, const AxisAlignedBoundingBox& B );

protected:
    glm::vec3 mMin;
    glm::vec3 mMax;
};

// a bbox A is < from bbox B if its diagonal is shorter
bool operator< (const AxisAlignedBoundingBox& A, const AxisAlignedBoundingBox& B );


class OrientedBoundingBox
{
public:
    OrientedBoundingBox() : orientation(glm::vec3(0.f,0.f,0.f)) {}

    AxisAlignedBoundingBox aabb;
    glm::vec3 orientation;
};



static const char* aspect_ratio_names[6] = { "1:1", "4:3", "3:2", "16:10", "16:9", "21:9" };
static const char* height_names[10] = { "16", "64", "200", "320", "480", "576", "720p", "1080p", "1440", "4K" };

glm::ivec2 resolutionFromDescription(int aspectratio, int height);

}


#endif // GLMTOOLKIT_H