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/*
* Pure Data Packet module.
* Copyright (c) by Tom Schouten <tom@zwizwa.be>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
#include <GL/gl.h>
#include "pdp_opengl.h"
#include "pdp_3dp_base.h"
typedef struct pdp_3d_push_struct
{
t_pdp_3dp_base x_base;
GLenum x_matrix;
int x_change_mode;
} t_pdp_3d_push;
static void pdp_3d_push_process_right(t_pdp_3d_push *x)
{
int p = pdp_3dp_base_get_context_packet(x);
if (-1 != p){
/* push one of the matrices */
glMatrixMode(x->x_matrix);
glPushMatrix();
/* set default matrix to modelview */
if (!x->x_change_mode) glMatrixMode(GL_MODELVIEW);
}
}
static void pdp_3d_push_process_left(t_pdp_3d_push *x)
{
int p = pdp_3dp_base_get_context_packet(x);
if (-1 != p){
/* restore the saved matrix */
glMatrixMode(x->x_matrix);
glPopMatrix();
/* set default matrix back to modelview */
glMatrixMode(GL_MODELVIEW);
}
}
static void pdp_3d_mode_process_right(t_pdp_3d_push *x)
{
int p = pdp_3dp_base_get_context_packet(x);
if (-1 != p){
/* change matrix mode */
glMatrixMode(x->x_matrix);
}
}
static void pdp_3d_mode_process_left(t_pdp_3d_push *x)
{
int p = pdp_3dp_base_get_context_packet(x);
if (-1 != p){
/* restore default matrix to modelview */
glMatrixMode(GL_MODELVIEW);
}
}
static void pdp_3d_push_setmatrix(t_pdp_3d_push *x, t_symbol *s)
{
GLenum m;
/* find out which matrix to push */
if (s == gensym("projection")) m = GL_PROJECTION;
else if (s == gensym("modelview")) m = GL_MODELVIEW;
else if (s == gensym("texture")) m = GL_TEXTURE;
else if (s == gensym("color")) m = GL_COLOR;
/* default is modelview */
else m = GL_MODELVIEW;
x->x_matrix = m;
}
t_class *pdp_3d_push_class;
void pdp_3d_push_free(t_pdp_3d_push *x)
{
pdp_3dp_base_free(x);
}
void *pdp_3d_push_mode_new(t_symbol *s)
{
t_pdp_3d_push *x = (t_pdp_3d_push *)pd_new(pdp_3d_push_class);
/* super init */
pdp_3dp_base_init(x);
/* setup which matrix we are talking about */
pdp_3d_push_setmatrix(x, s);
x->x_change_mode = 0;
return (void *)x;
}
void *pdp_3d_push_new(t_symbol *s, t_floatarg f)
{
t_pdp_3d_push *x = (t_pdp_3d_push *)pdp_3d_push_mode_new(s);
/* create dpd outlets */
pdp_3dp_base_add_outlet(x, (t_pdp_method)pdp_3d_push_process_left, 0);
pdp_3dp_base_add_outlet(x, (t_pdp_method)pdp_3d_push_process_right, 0);
x->x_change_mode = (f != 0.0f);
return (void *)x;
}
void *pdp_3d_mode_new(t_symbol *s)
{
t_pdp_3d_push *x = (t_pdp_3d_push *)pdp_3d_push_mode_new(s);
/* create dpd outlets */
pdp_3dp_base_add_outlet(x, (t_pdp_method)pdp_3d_mode_process_left, 0);
pdp_3dp_base_add_outlet(x, (t_pdp_method)pdp_3d_mode_process_right, 0);
return (void *)x;
}
#ifdef __cplusplus
extern "C"
{
#endif
void pdp_3d_push_setup(void)
{
pdp_3d_push_class = class_new(gensym("3dp_push"), (t_newmethod)pdp_3d_push_new,
(t_method)pdp_3d_push_free, sizeof(t_pdp_3d_push), 0, A_DEFSYMBOL, A_NULL);
class_addcreator((t_newmethod)pdp_3d_mode_new, gensym("3dp_mode"), A_DEFSYMBOL, A_NULL);
pdp_3dp_base_setup(pdp_3d_push_class);
}
#ifdef __cplusplus
}
#endif
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