/* Copyright (c) Mark J. Kilgard, 1998.  */

/* This program is freely distributable without licensing fees

   and is provided without guarantee or warrantee expressed or

   implied. This program is -not- in the public domain. */

#include <glsmap.h>

#include "glsmapint.h"

void

__smapDrawSphereMapMeshSide(SphereMapMesh *mesh, int side)

{

    INITFACE(mesh);

    int i, j;

    for (i=0; i<mesh->steps-1; i++) {

        glBegin(GL_QUAD_STRIP);

        for (j=0; j<mesh->steps; j++) {

            glTexCoord2fv (FACEst(side,i,j));

            glVertex2fv   (FACExy(side,i,j));

            glTexCoord2fv (FACEst(side,i+1,j));

            glVertex2fv   (FACExy(side,i+1,j));

        }

        glEnd();

    }

}

/* Back face specially rendered for its singularity! */

void

__smapDrawSphereMapMeshBack(SphereMapMesh *mesh)

{

    INITBACK(mesh);

    int side, i, j;

    for (side=0; side<4; side++) {

        for (j=0; j<mesh->rings-1+mesh->edgeExtend; j++) {

            glBegin(GL_QUAD_STRIP);

            for (i=0; i<mesh->steps; i++) {

                glTexCoord2fv (BACKst(side,j,i));

                glVertex2fv   (BACKxy(side,j,i));

                glTexCoord2fv (BACKst(side,j+1,i));

                glVertex2fv   (BACKxy(side,j+1,i));

            }

            glEnd();

        }

    }

}