Commit dade31c1 authored by Luis Penaranda's avatar Luis Penaranda
Browse files

added orthographic projection

parent 44ec9b4f

openglcanvas.cpp

+18 −0
Original line number Diff line number Diff line
@@ -522,6 +522,15 @@ void OpenGLCanvas::vertex_transformation(float *positions, int m, int n, float c 
                positions[3*(j+i*n)+1] = v/extent;

                positions[3*(j+i*n)+2] = z;

            }



            if (visualization=="Orthographic"){

                u = x;

                v = y;

                positions[3*(j+i*n)] = u/extent;

                positions[3*(j+i*n)+1] = v/extent;

                positions[3*(j+i*n)+2] = z;

            }



        }

    }
@@ -598,6 +607,14 @@ float OpenGLCanvas::calculate_extent(float fov_rads){ 
        u = x/(-z);

        v = y/(-z);

    }

    if (visualization=="Orthographic"){

        if(z<0.){

            u=x;

            v=y;

        }else{

            u=v=1.f;

        }

    }

    return u;

}
@@ -789,6 +806,7 @@ void OpenGLCanvas::paintGL(){ 
    else if (visualization=="Stereographic") vis_mode=4.0;

    else if (visualization=="Mercator") vis_mode=5.0;

    else if (visualization=="Zorin-Barr") vis_mode=6.0;

    else if (visualization=="Orthographic") vis_mode=7.0;

    glMatrixMode(GL_PROJECTION);

    glLoadIdentity();

    glOrtho(0.0, 2.0/extent, 0.0, 2.0/scale, 0.0, -2.0/vis_mode);

panowindow1.ui

+5 −0
Original line number Diff line number Diff line
@@ -207,6 +207,11 @@ 
       <string>Zorin-Barr</string>

      </property>

     </item>

     <item>

      <property name="text">

       <string>Orthographic</string>

      </property>

     </item>

    </widget>

   </item>

   <item row="12" column="1">

shaders/vertex_shader.vert

+5 −0
Original line number Diff line number Diff line
@@ -92,6 +92,11 @@ void main(void){ 
        v=zbrho*sin(zbalpha);

        gl_Position = vec4(u/extent,v/extent,z,1.0);

    }

    else if (vis_mode==7.0){ // Orthographic

        u=x;

        v=y;

        gl_Position = vec4(u/extent,v/extent,z,1.0);

    }



//    gl_Position = vec4(u/2.0,v/2.0,z,1.0);