tgCamera.h

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#ifndef TG_CAMERA
#define TG_CAMERA

#include <blort/TomGine/headers.h>

#include <blort/TomGine/tgVector3.h>
#include <blort/TomGine/tgFrustum.h>
#include <blort/TomGine/tgMathlib.h>
#include <blort/TomGine/tgPose.h>
#include <sensor_msgs/CameraInfo.h>

#define GL_ORTHO 0
#define GL_PERSPECTIVE 1

namespace TomGine{

class tgCamera
{
private:
        // tgCamera definition
        tgVector3 m_vPos;                       // Position of tgCamera (absolute)
        tgVector3 m_vView;              // Viewpoint of tgCamera (absolute)
        tgVector3 m_vUp;                        // The tgCameras upside (relative)
        
        tgVector3 f;            // Vector of camera pointing forward 
        tgVector3 s;            // Vector of camera pointing sidewards (right)
        tgVector3 u;            // Vector of camera pointing up
        
        unsigned m_width, m_height;
        float m_fovy;
        float m_zNear, m_zFar;
        unsigned short m_projection;    
        mat4 m_extrinsic;
        mat4 m_intrinsic;
        
        tgFrustum m_frustum;
        
public:
        tgCamera();
        
        struct Parameter{
                Parameter();
                Parameter(const sensor_msgs::CameraInfo& cam_info);
                void setPose(const TomGine::tgPose& camPose);
                // image dimension
                unsigned width;
                unsigned height;
                // Instrinsic parameters:
                // entries of the camera matrix
                float fx;
                float fy;
                float cx;
                float cy;
                // radial distortion parameters
                float k1;
                float k2;
                float k3;
                // tangential distortion parameters
                float p1;
                float p2;
                // extrinsic parameters: 3D pose of camera w.r.t. world
                mat3 rot;
                vec3 pos;
                // Clipping planes of virtual camera
                float zNear;
                float zFar;
                
                void print(){
                        printf("%u %u\n", width, height);
                        printf("%f %f\n", fx, fy);
                        printf("%f %f\n", cx, cy);
                        printf("%f %f %f\n", k1, k2, k3);
                        printf("%f %f\n", p1, p2);
                        printf("\n %f %f %f\n", rot.mat[0], rot.mat[1], rot.mat[2]);
                        printf(" %f %f %f\n", rot.mat[3], rot.mat[4], rot.mat[5]);
                        printf(" %f %f %f\n", rot.mat[6], rot.mat[7], rot.mat[8]);
                        printf("\n %f %f %f\n", pos.x, pos.y, pos.z);
                        printf("%f %f\n", zNear, zFar);
                }
        };
        
        void Load(tgCamera::Parameter camPar);
        
        // Define tgCamera
        void Set(       float posx,  float posy,  float posz,
                                float viewx, float viewy, float viewz,
                                float upx,   float upy,   float upz,
                                float fovy=45.0f, unsigned width=800, unsigned height=600,
                                float zNear=0.1f, float zFar=100.0f,
                                unsigned short projection=GL_PERSPECTIVE );
        void SetExtrinsic(float* M);
        void SetIntrinsic(float* M);
        void SetIntrinsic(float fovy, unsigned width, unsigned height, float zNear, float zFar, unsigned short projection);
        void SetViewport(unsigned w, unsigned h);
        void SetZRange(float near, float far);
        void SetPerspective(){m_projection=GL_PERSPECTIVE;}
        void SetOrtho(){m_projection=GL_ORTHO;}
        void SetPos(float x, float y, float z){ m_vPos.x=x; m_vPos.y=y; m_vPos.z=z; }
        
        vec2 ToImageSpace(const vec3 &world_space);
        
        void Activate();
        void Print();
        
        void pvu2fsu();
        void fsu2pvu();
        void fsu2extrinsic();
        void extrinsic2fsu();
        void fwh2intrinsic();
        
        // Gets
        TomGine::tgPose GetPose();

        tgVector3 GetF(){return f;}
        tgVector3 GetS(){return s;}
        tgVector3 GetU(){return u;}
        
        tgVector3 GetPos(){return m_vPos;}
        tgVector3 GetView(){return m_vView;}
        tgVector3 GetUp(){return m_vUp;}
        
        float GetZNear(){ return m_zNear; }
        float GetZFar(){ return m_zFar; }
        unsigned GetWidth(){ return m_width; }
        unsigned GetHeight(){return m_height; }
        
        float GetFOVY(){ return m_fovy; }
        unsigned short GetProjection(){ return m_projection; }
        mat4 GetIntrinsic(){ return m_intrinsic; }
        mat4 GetExtrinsic(){ return m_extrinsic; }
        
        tgFrustum* GetFrustum(){ return &m_frustum; }

        // Translations
        void Translate(tgVector3 v);
        void Translate(float x, float y, float z, float fWay);
        void TranslateF(float fWay);
        void TranslateS(float fWay);
        void TranslateU(float fWay);
        
        // Rotations
        void Rotate(float x, float y, float z, float fAngle);
        void RotateF(float fAngle);
        void RotateS(float fAngle);
        void RotateU(float fAngle);
        
        void RotateX(float fAngle);
        void RotateY(float fAngle);
        void RotateZ(float fAngle);
        
        void Orbit(tgVector3 vPoint, tgVector3 vAxis, float fAngle);
        
        // Movement
        void ApplyTransform();
        
        void DrawFrustum(){ m_frustum.DrawFrustum(); }

};

} // namespace TomGine

#endif