Commit b9a7cf0f authored by Luis Peñaranda's avatar Luis Peñaranda
Browse files

move image with the mouse

parent 5e76ac41

openglcanvas.cpp

+19 −1
Original line number Diff line number Diff line
@@ -446,7 +446,9 @@ int OpenGLCanvas::getTextureSize(const char * const progname, const char * textu 
    pnm_readpaminit(in_file,&inpam,sizeof(struct pam));

#endif



    int size = inpam.width*inpam.height*inpam.depth*inpam.bytes_per_sample;

    image_size_x=inpam.width;

    image_size_y=inpam.height;

    int size = image_size_x*image_size_y*inpam.depth*inpam.bytes_per_sample;

    pm_close(in_file);



    //fprintf(stderr,"size=%d\n",size);
@@ -590,6 +592,22 @@ void OpenGLCanvas::setShaders() { 


}



void OpenGLCanvas::mousePressEvent(QMouseEvent *event){

    lastPos=event->pos();

    //fprintf(stderr,"mouse click\n");

}



void OpenGLCanvas::mouseMoveEvent(QMouseEvent *event){

    // scroll with the left button

    if(event->buttons()==Qt::LeftButton){

        // compute the delta and move the image

        center_lambda+=(event->x()-lastPos.x())*3.1415926f/image_size_x;

        center_phi+=(event->y()-lastPos.y())*3.1415926f/image_size_y;

        lastPos=event->pos();

        updateGL();

    }

}



void OpenGLCanvas::paintGL(){



    float fov_rads = (fov/180.f)*1.5708f;

openglcanvas.h

+8 −0
Original line number Diff line number Diff line
@@ -55,6 +55,8 @@ protected: 
    void readTextureBytes(const char * const progname, const char * texturePath,unsigned char * textureBytes,int * outImageWidth, int * outImageHeight);

    char *textFileRead(char *fn);

    void setShaders();

    void mousePressEvent(QMouseEvent *event);

    void mouseMoveEvent(QMouseEvent *event);



signals:

    void fps(QString newFPS);
@@ -93,6 +95,12 @@ private: 
    // options set in the rc file

    char* shader_dir;

    char* input_image_file;



    // input image size (determined automatically)

    int image_size_x;

    int image_size_y;



    QPoint lastPos; // mouse click position

};



#endif // OPENGLCANVAS_H