File: pogl_glu.xs

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/*  Last saved: Wed 17 Dec 2014 03:14:02 PM */

/*  Copyright (c) 1998 Kenneth Albanowski. All rights reserved.
 *  Copyright (c) 2007 Bob Free. All rights reserved.
 *  Copyright (c) 2009 Chris Marshall. All rights reserved.
 *  Copyright (c) 2011 Paul Seamons. All rights reserved.
 *  This program is free software; you can redistribute it and/or
 *  modify it under the same terms as Perl itself.
 */

/* OpenGL GLU bindings */
#define IN_POGL_GLU_XS

#include <stdio.h>

#include "pgopogl.h"

#ifdef HAVE_GL
#include "gl_util.h"
#endif

#ifdef HAVE_GLX
#include "glx_util.h"
#endif

#ifdef HAVE_GLU
#include "glu_util.h"
#endif


#ifdef IN_POGL_GLU_XS

#ifndef CALLBACK
#define CALLBACK
#endif

struct PGLUtess {
	GLUtesselator * triangulator;
#ifdef GLU_VERSION_1_2
	SV * begin_callback;
	SV * edgeFlag_callback;
	SV * vertex_callback;
	SV * end_callback;
	SV * error_callback;
	SV * combine_callback;
#endif
        bool do_colors;
        bool do_normals;
        bool use_vertex_data;
        GLdouble * vertex_data; /* used during non-GLU_TESS_VERTEX_DATA */
	SV * polygon_data;
	AV * vertex_datas;
	AV * tess_datas;
};

typedef struct PGLUtess PGLUtess;

#define delete_vertex_datas() \
		if (tess->vertex_datas) {                    \
                  AV * vds = tess->vertex_datas;             \
                  SV** svp;                                  \
                  I32 i;                                     \
                  for (i=0; i<=av_len(vds); i++) {           \
                    svp = av_fetch(vds, i, FALSE);           \
                    free(INT2PTR(GLdouble*, SvIV(*svp)));    \
                  }                                          \
                  SvREFCNT_dec(tess->vertex_datas);          \
                  tess->vertex_datas = 0;                    \
                }

#define delete_tess_datas() \
		if (tess->tess_datas) {                      \
                  AV * tds = tess->tess_datas;               \
                  SV** svp;                                  \
                  I32 i;                                     \
                  for (i=0; i<=av_len(tds); i++) {           \
                    svp = av_fetch(tds, i, FALSE);           \
                    free(INT2PTR(PGLUtess*, SvIV(*svp)));    \
                  }                                          \
                  SvREFCNT_dec(tess->tess_datas);            \
                  tess->tess_datas = 0;                      \
                }

#define delete_polygon_data()                             \
		if (tess->polygon_data) {                 \
			SvREFCNT_dec(tess->polygon_data); \
			tess->polygon_data = 0;           \
		}



#ifdef GLU_VERSION_1_2


/* Begin a named callback handler */
#define begin_tess_marshaller(name, type, params, croak_msg, default_handler) \
void CALLBACK _s_marshal_glu_t_callback_ ## name params			\
{                                                                       \
    dSP;                                                                \
    int i; int j = 3;                                                   \
    PGLUtess * t = (PGLUtess*)gl_polygon_data;                          \
    SV * handler = t-> type ## _callback;                               \
    if (!handler) croak(croak_msg);                                     \
    if (! SvROK(handler)) { /* default */                               \
      default_handler;                                                  \
      return;                                                           \
    }                                                                   \
    PUSHMARK(sp);

/* End a gluTess callback handler */
#define end_tess_marshaller()                                           \
	PUTBACK;                                                        \
	perl_call_sv(handler, G_DISCARD);                               \
}


/* Declare gluTess BEGIN */
begin_tess_marshaller(begin, begin, (GLenum type, void * gl_polygon_data), "Missing tess callback for begin", glBegin(type))
	XPUSHs(sv_2mortal(newSViv(type)));
end_tess_marshaller()

/* Declare gluTess BEGIN_DATA */
begin_tess_marshaller(begin_data, begin, (GLenum type, void * gl_polygon_data), "Missing tess callback for begin_data", glBegin(type))
	XPUSHs(sv_2mortal(newSViv(type)));
    if (t->polygon_data) XPUSHs((SV*)t->polygon_data);
end_tess_marshaller()

/* Declare gluTess END */
begin_tess_marshaller(end, end, (void * gl_polygon_data), "Missing tess callback for end", glEnd())
end_tess_marshaller()

/* Declare gluTess END_DATA */
begin_tess_marshaller(end_data, end, (void * gl_polygon_data), "Missing tess callback for end_data", glEnd())
    if (t->polygon_data) XPUSHs((SV*)t->polygon_data);
end_tess_marshaller()

/* Declare gluTess EDGEFLAG */
begin_tess_marshaller(edgeFlag, edgeFlag, (GLboolean flag, void * gl_polygon_data), "Missing tess callback for edgeFlag", glEdgeFlag(flag))
	XPUSHs(sv_2mortal(newSViv(flag)));
end_tess_marshaller()

/* Declare gluTess EDGEFLAG_DATA */
begin_tess_marshaller(edgeFlag_data, edgeFlag, (GLboolean flag, void * gl_polygon_data), "Missing tess callback for edgeFlag_data", glEdgeFlag(flag))
	XPUSHs(sv_2mortal(newSViv(flag)));
    if (t->polygon_data) XPUSHs((SV*)t->polygon_data);
end_tess_marshaller()

/* Declare gluTess VERTEX */
begin_tess_marshaller(vertex, vertex, (void * gl_polygon_data), "Missing tess callback for vertex", \
                      GLdouble * vd = t->vertex_data;                                   \
                      if (t->do_colors) { \
                         glColor4f(vd[j], vd[j+1], vd[j+2], vd[j+3]); \
                         j += 4; \
                      } \
                      if (t->do_normals) glNormal3f(vd[j], vd[j+1], vd[j+2]);           \
                      glVertex3f(vd[0], vd[1], vd[2]);                                  \
                      )
{
    GLdouble * vd = (GLdouble*) t->vertex_data;
    for (i = 0; i < 3; i++)
      XPUSHs(sv_2mortal(newSVnv(vd[i])));
    if (t->do_colors) {
      int J = j + 4;
      for ( ; j < J; j++)
        XPUSHs(sv_2mortal(newSVnv(vd[j])));
    }
    if (t->do_normals)
      for (i = 0; i < 3; i++)
        XPUSHs(sv_2mortal(newSVnv(vd[j++])));
    if (t->polygon_data) XPUSHs((SV*)t->polygon_data);
}
end_tess_marshaller()

/* Declare gluTess VERTEX_DATA */
begin_tess_marshaller(vertex_data, vertex, (void * vertex_data, void * gl_polygon_data), "Missing tess callback for vertex_data", \
                      GLdouble * vd = (GLdouble*) vertex_data;                          \
                      if (t->do_colors) { \
                         glColor4f(vd[j], vd[j+1], vd[j+2], vd[j+3]); \
                         j += 4; \
                      } \
                      if (t->do_normals) glNormal3f(vd[j], vd[j+1], vd[j+2]);           \
                      glVertex3f(vd[0], vd[1], vd[2]);                                  \
                     )
    if (! vertex_data) croak("Missing vertex data in tess vertex_data callback");
{
    GLdouble * vd = (GLdouble*) vertex_data;
    for (i = 0; i < 3; i++)
      XPUSHs(sv_2mortal(newSVnv(vd[i])));
    if (t->do_colors) {
      int J = j + 4;
      for ( ; j < J; j++)
        XPUSHs(sv_2mortal(newSVnv(vd[j])));
    }
    if (t->do_normals)
      for (i = 0; i < 3; i++)
        XPUSHs(sv_2mortal(newSVnv(vd[j++])));
    if (t->polygon_data) XPUSHs((SV*)t->polygon_data);
}
end_tess_marshaller()

/* Declare gluTess ERROR */
begin_tess_marshaller(error, error, (GLenum errno_, void * gl_polygon_data), "Missing tess callback for error", \
                      warn("Tesselation error: %s", gluErrorString(errno_)); \
                     )
	XPUSHs(sv_2mortal(newSViv(errno_)));
end_tess_marshaller()

/* Declare gluTess ERROR_DATA */
begin_tess_marshaller(error_data, error, (GLenum errno_, void * gl_polygon_data), "Missing tess callback for error_data", \
                      warn("Tesselation error: %s", gluErrorString(errno_)); \
                     )
	XPUSHs(sv_2mortal(newSViv(errno_)));
    if (t->polygon_data) XPUSHs((SV*)t->polygon_data);
end_tess_marshaller()

/* Declare gluTess COMBINE AND COMBINE_DATA */
void CALLBACK _s_marshal_glu_t_callback_combine (GLdouble coords[3], void * vertex_data[4],
                                                 GLfloat weight[4], void ** out_data,
                                                 void * gl_polygon_data)
{
        SV * handler;
	AV * vds;
        SV * item;
        I32 n;
	int i, j = 3;
	dSP;
        GLdouble *vd[4];
	PGLUtess *t = (PGLUtess*)gl_polygon_data;
        bool has_data = FALSE;
        int size = 3 + (t->do_colors ? 4 : 0) + (t->do_normals ? 3 : 0);
        GLdouble *vertex = malloc(sizeof(GLdouble) * size);
        if (vertex == NULL) croak("Couldn't allocate combination vertex during tesselation");
        vds = t->vertex_datas;
        if (!vds) croak("Missing vertex data storage");
	av_push(vds, newSViv(PTR2IV(vertex)));

	handler = t->combine_callback;
        if (!handler) croak("Missing tess callback for combine_data");

	if (t->use_vertex_data) {
            PGLUtess * opaque = malloc(sizeof(PGLUtess));
            if (!opaque) croak("Couldn't allocate storage for vertex opaque data");
	    opaque->triangulator     = t->triangulator;
            opaque->vertex_datas     = t->vertex_datas;
            opaque->vertex_callback  = t->vertex_callback;
            opaque->combine_callback = t->combine_callback;
            opaque->vertex_data      = vertex;
            opaque->polygon_data     = &PL_sv_undef;
            opaque->use_vertex_data  = TRUE;
            opaque->do_colors        = t->do_colors;
            opaque->do_normals       = t->do_normals;
            if (! t->tess_datas) t->tess_datas = newAV();
            av_push(t->tess_datas, newSViv(PTR2IV(opaque)));
            *out_data = opaque;
            for (i = 0; i < 4; i++) {
                PGLUtess* ot = (PGLUtess*)vertex_data[i];
                vd[i] = (GLdouble*)ot->vertex_data;
            }
	} else {
            *out_data = vertex;
            for (i = 0; i < 4; i++)
               vd[i] = (GLdouble*)vertex_data[i];
        }

        if (! SvROK(handler)) { /* default */
          vertex[0] = coords[0];
          vertex[1] = coords[1];
          vertex[2] = coords[2];
          if (t->do_colors) {
            int J = j + 4;
            for ( ; j < J; j++) {
              vertex[j] = 0;
              for (i = 0; i < 4; i++)
                if (weight[i]) vertex[j] += weight[i] * vd[i][j];
            }
          }
          if (t->do_normals) {
            int J = j + 3;
            for ( ; j < J; j++) {
              vertex[j] = 0;
              for (i = 0; i < 4; i++)
                if (weight[i]) vertex[j] += weight[i] * vd[i][j];
            }
          }
        } else {
          PUSHMARK(sp);
          for (i = 0; i < 3; i++)
            XPUSHs(sv_2mortal(newSVnv(coords[i])));
          for (i = 0; i < 4; i++) {
            AV* vec = (AV*)sv_2mortal((SV*)newAV());
            XPUSHs(newRV_inc((SV*)vec));
            for (j = 0 ; j < 3; j++)
                av_push(vec, sv_2mortal(newSVnv(weight[i] ? vd[i][j] : 0)));
            if (t->do_colors) {
              int J = j + 4;
              for ( ; j < J; j++)
                av_push(vec, sv_2mortal(newSVnv(weight[i] ? vd[i][j] : 0)));
            }
            if (t->do_normals) {
              int J = j + 3;
              for ( ; j < J; j++)
                av_push(vec, sv_2mortal(newSVnv(weight[i] ? vd[i][j] : 0)));
            }
            if (t->use_vertex_data) {
              PGLUtess* ot = (PGLUtess*)vertex_data[i];
              av_push(vec, ot->polygon_data ? ot->polygon_data : &PL_sv_undef);
            }
          }
          for (i = 0; i < 4; i++)
            XPUSHs(sv_2mortal(newSVnv(weight[i])));
          XPUSHs(t->polygon_data ? t->polygon_data : &PL_sv_undef); /* would be nice to have the option to only do this on COMBINE_DATA */

	  PUTBACK;

          n = perl_call_sv(handler, G_ARRAY);

          SPAGAIN;

          if (t->do_colors) {
              if (t->do_normals) {
                  if (n == 11 && t->use_vertex_data) has_data = TRUE;
                  else if (n != 10) {
                    if (t->use_vertex_data) croak("Callback expects (x,y,z, r,g,b,a, nx,ny,nz [,polygon_data])");
                    else  croak("Callback expects (x,y,z, r,g,b,a, nx,ny,nz)");
                  }
              } else {
                  if (n == 8 && t->use_vertex_data) has_data = TRUE;
                  else if (n != 7) {
                    if (t->use_vertex_data) croak("Callback expects (x,y,z, r,g,b,a [,polygon_data])");
                    else  croak("Callback expects (x,y,z, r,g,b,a)");
                  }
              }
          } else {
              if (t->do_normals) {
                  if (n == 7 && t->use_vertex_data) has_data = TRUE;
                  else if (n != 6) {
                    if (t->use_vertex_data) croak("Callback expects (x,y,z, nx,ny,nz [,polygon_data])");
                    else  croak("Callback expects (x,y,z, nx,ny,nz)");
                  }
              } else {
                  if (n == 4 && t->use_vertex_data) has_data = TRUE;
                  else if (n != 3) {
                    if (t->use_vertex_data) croak("Callback expects (x,y,z [,polygon_data])");
                    else  croak("Callback expects (x,y,z)");
                  }
              }
          }

          if (t->use_vertex_data) {
              PGLUtess* opaque = (PGLUtess*)*out_data;
              opaque->polygon_data = (has_data) ? POPs : 0;
          }

          for (i = n - (has_data ? 2 : 1); i >= 0; i--) {
              GLdouble val;
              item = POPs;
              if (! item || (! SvIOK(item) && ! SvNOK(item)))
                  croak("Value returned in index %d was not a valid number", i);
              val = (GLdouble)SvNV(item);
              vertex[i] = val;
          }
	  PUTBACK;
        }
}

#endif

#endif /* End IN_POGL_GLU_XS */


MODULE = OpenGL::GLU		PACKAGE = OpenGL


#ifdef IN_POGL_GLU_XS

##################### GLU #########################

#ifdef HAVE_GLU

#// $nurb->gluBeginCurve($nurb);
void
gluBeginCurve(nurb)
	GLUnurbsObj *	nurb

#// gluEndCurve($nurb);
void
gluEndCurve(nurb)
	GLUnurbsObj *	nurb

#// gluBeginPolygon($tess);
void
gluBeginPolygon(tess)
	PGLUtess *	tess
	CODE:
	gluBeginPolygon(tess->triangulator);

#// gluEndPolygon($tess);
void
gluEndPolygon(tess)
	PGLUtess *	tess
	CODE:
	gluEndPolygon(tess->triangulator);

#// gluBeginSurface($nurb);
void
gluBeginSurface(nurb)
	GLUnurbsObj *	nurb

#// gluEndSurface($nurb);
void
gluEndSurface(nurb)
	GLUnurbsObj *	nurb

#// gluBeginTrim($nurb);
void
gluBeginTrim(nurb)
	GLUnurbsObj *	nurb

#// gluEndTrim($nurb);
void
gluEndTrim(nurb)
	GLUnurbsObj *	nurb

#//# gluBuild1DMipmaps_c($target, $internalformat, $width, $format, $type, (CPTR)data);
GLint
gluBuild1DMipmaps_c(target, internalformat, width, format, type, data)
	GLenum	target
	GLuint	internalformat
	GLsizei	width
	GLenum	format
	GLenum	type
	void *	data
	CODE:
	{
		RETVAL=gluBuild1DMipmaps(target, internalformat,
			width, format, type, data);
	}
	OUTPUT:
	  RETVAL

#//# gluBuild1DMipmaps_s($target, $internalformat, $width, $format, $type, (PACKED)data);
GLint
gluBuild1DMipmaps_s(target, internalformat, width, format, type, data)
	GLenum	target
	GLuint	internalformat
	GLsizei	width
	GLenum	format
	GLenum	type
	SV *	data
	CODE:
	{
	GLvoid * ptr = ELI(data, width, 1, format, type, gl_pixelbuffer_unpack);
	RETVAL=gluBuild1DMipmaps(target, internalformat, width, format, type, ptr);
	}
	OUTPUT:
	  RETVAL

#//# gluBuild2DMipmaps_c($target, $internalformat, $width, $height, $format, $type, (CPTR)data);
GLint
gluBuild2DMipmaps_c(target, internalformat, width, height, format, type, data)
	GLenum	target
	GLuint	internalformat
	GLsizei	width
	GLsizei	height
	GLenum	format
	GLenum	type
	void *	data
	CODE:
	{
		RETVAL=gluBuild2DMipmaps(target, internalformat,
			width, height, format, type, data);
	}
	OUTPUT:
	  RETVAL

#//# gluBuild2DMipmaps_s($target, $internalformat, $width, $height, $format, $type, (PACKED)data);
GLint
gluBuild2DMipmaps_s(target, internalformat, width, height, format, type, data)
	GLenum	target
	GLuint	internalformat
	GLsizei	width
	GLsizei	height
	GLenum	format
	GLenum	type
	SV *	data
	CODE:
	{
	GLvoid * ptr = ELI(data, width, height, format, type, gl_pixelbuffer_unpack);
	RETVAL=gluBuild2DMipmaps(target, internalformat, width, height, format, type, ptr);
	}
	OUTPUT:
	  RETVAL

#// gluCylinder($quad, $base, $top, $height, $slices, $stacks);
void
gluCylinder(quad, base, top, height, slices, stacks)
	GLUquadricObj *	quad
	GLdouble	base
	GLdouble	top
	GLdouble	height
	GLint	slices
	GLint	stacks

#// gluDeleteNurbsRenderer($nurb);
void
gluDeleteNurbsRenderer(nurb)
	GLUnurbsObj *	nurb

#// gluDeleteQuadric($quad);
void
gluDeleteQuadric(quad)
	GLUquadricObj *	quad

#// gluDeleteTess($tess);
void
gluDeleteTess(tess)
	PGLUtess *	tess
	CODE:
	{
		if (tess->triangulator)
			gluDeleteTess(tess->triangulator);
#ifdef GLU_VERSION_1_2
		if (tess->begin_callback)
			SvREFCNT_dec(tess->begin_callback);
		if (tess->edgeFlag_callback)
			SvREFCNT_dec(tess->edgeFlag_callback);
		if (tess->vertex_callback)
			SvREFCNT_dec(tess->vertex_callback);
		if (tess->end_callback)
			SvREFCNT_dec(tess->end_callback);
		if (tess->error_callback)
			SvREFCNT_dec(tess->error_callback);
		if (tess->combine_callback)
			SvREFCNT_dec(tess->combine_callback);
#endif
delete_vertex_datas()
delete_tess_datas()
delete_polygon_data()
		free(tess);
	}

#// gluDisk($quad, $inner, $outer, $slices, $loops);
void
gluDisk(quad, inner, outer, slices, loops)
	GLUquadricObj *	quad
	GLdouble	inner
	GLdouble	outer
	GLint	slices
	GLint	loops

#//# gluErrorString($error);
char *
gluErrorString(error)
	GLenum	error
	CODE:
	RETVAL = (char*)gluErrorString(error);
	OUTPUT:
	RETVAL

#// gluGetNurbsProperty_p($nurb, $property);
GLfloat
gluGetNurbsProperty_p(nurb, property)
	GLUnurbsObj *	nurb
	GLenum	property
	CODE:
	{
		GLfloat param;
		gluGetNurbsProperty(nurb, property, &param);
		RETVAL = param;
	}
	OUTPUT:
	RETVAL

#// gluNurbsProperty(nurb, property, value);
void
gluNurbsProperty(nurb, property, value)
	GLUnurbsObj *	nurb
	GLenum	property
	GLfloat value

#ifdef GLU_VERSION_1_1

#//# gluGetString($name);
char *
gluGetString(name)
	GLenum	name
	CODE:
	RETVAL = (char*)gluGetString(name);
	OUTPUT:
	RETVAL

#endif

#// gluLoadSamplingMatrices_p(nurb, m1,m2,m3,m4,m5,m6,m7,m8,m9,m10,m11,m12,m13,m14,m15,m16, o1,o2,o3,o4,o5,o6,o7,o8,o9,o10,o11,o12,o13,o14,o15,o16, v1,v2,v3,v4);
void
gluLoadSamplingMatrices_p(nurb, m1,m2,m3,m4,m5,m6,m7,m8,m9,m10,m11,m12,m13,m14,m15,m16, o1,o2,o3,o4,o5,o6,o7,o8,o9,o10,o11,o12,o13,o14,o15,o16, v1,v2,v3,v4)
	GLUnurbsObj *	nurb
	CODE:
	{
		GLfloat m[16], p[16];
		GLint v[4];
		int i;
		for (i=0;i<16;i++)
			m[i] = (GLfloat)SvNV(ST(i+1));
		for (i=0;i<16;i++)
			p[i] = (GLfloat)SvNV(ST(i+1+16));
		for (i=0;i<4;i++)
			v[i] = SvIV(ST(i+1+16+16));
		gluLoadSamplingMatrices(nurb, m, p, v);
	}

#//# gluLookAt($eyeX, $eyeY, $eyeZ, $centerX, $centerY, $centerZ, $upX, $upY, $upZ);
void
gluLookAt(eyeX, eyeY, eyeZ, centerX, centerY, centerZ, upX, upY, upZ)
	GLdouble	eyeX
	GLdouble	eyeY
	GLdouble	eyeZ
	GLdouble	centerX
	GLdouble	centerY
	GLdouble	centerZ
	GLdouble	upX
	GLdouble	upY
	GLdouble	upZ

#// gluNewNurbsRenderer();
GLUnurbsObj *
gluNewNurbsRenderer()

#// gluNewQuadric();
GLUquadricObj *
gluNewQuadric()

#// gluNewTess();
PGLUtess *
gluNewTess(...)
	CODE:
	{
		RETVAL = malloc(sizeof(PGLUtess));
		memset(RETVAL, 0, sizeof(PGLUtess));
                RETVAL->do_colors  = (items > 0) ? SvTRUE(ST(0)) : FALSE;
                RETVAL->do_normals = (items > 1) ? SvTRUE(ST(1)) : FALSE;
		RETVAL->triangulator = gluNewTess();
	}
	OUTPUT:
	RETVAL

#// gluNextContour(tess, type);
void
gluNextContour(tess, type)
	PGLUtess *	tess
	GLenum	type
	CODE:
	gluNextContour(tess->triangulator, type);

#// gluNurbsCurve_c(nurb, nknots, knot, stride, ctlarray, order, type);
void
gluNurbsCurve_c(nurb, nknots, knot, stride, ctlarray, order, type)
	GLUnurbsObj *	nurb
	GLint	nknots
	void *	knot
	GLint	stride
	void *	ctlarray
	GLint	order
	GLenum	type
	CODE:
	gluNurbsCurve(nurb, nknots, knot, stride, ctlarray, order, type);

#// gluNurbsSurface_c(nurb, sknot_count, sknot, tknot_count, tknot, s_stride, t_stride, ctrlarray, sorder, torder, type);
void
gluNurbsSurface_c(nurb, sknot_count, sknot, tknot_count, tknot, s_stride, t_stride, ctrlarray, sorder, torder, type)
	GLUnurbsObj *	nurb
	GLint	sknot_count
	void *	sknot
	GLint	tknot_count
	void *	tknot
	GLint	s_stride
	GLint	t_stride
	void *	ctrlarray
	GLint	sorder
	GLint	torder
	GLenum	type
	CODE:
	gluNurbsSurface(nurb, sknot_count, sknot, tknot_count, tknot, s_stride, t_stride, ctrlarray, sorder, torder, type);

#//# gluOrtho2D($left, $right, $bottom, $top);
void
gluOrtho2D(left, right, bottom, top)
	GLdouble	left
	GLdouble	right
	GLdouble	bottom
	GLdouble	top

#// gluPartialDisk(quad, inner, outer, slices, loops, start, sweep);
void
gluPartialDisk(quad, inner, outer, slices, loops, start, sweep)
	GLUquadricObj*	quad
	GLdouble	inner
	GLdouble	outer
	GLint	slices
	GLint	loops
	GLdouble	start
	GLdouble	sweep

#//# gluPerspective($fovy, $aspect, $zNear, $zFar);
void
gluPerspective(fovy, aspect, zNear, zFar)
	GLdouble	fovy
	GLdouble	aspect
	GLdouble	zNear
	GLdouble	zFar

#//# gluPickMatrix_p($x, $y, $delX, $delY, $m1,$m2,$m3,$m4);
void
gluPickMatrix_p(x, y, delX, delY, m1,m2,m3,m4)
	GLdouble	x
	GLdouble	y
	GLdouble	delX
	GLdouble	delY
	CODE:
	{
		GLint m[4];
		int i;
		for (i=0;i<4;i++)
			m[i] = SvIV(ST(i+4));
		gluPickMatrix(x, y, delX, delY, &m[0]);
	}

#//# gluProject_p($objx, $objy, $objz, @m4x4, @o4x4, $v1,$v2,$v3,$v4);
void
gluProject_p(objx, objy, objz, m1,m2,m3,m4,m5,m6,m7,m8,m9,m10,m11,m12,m13,m14,m15,m16, o1,o2,o3,o4,o5,o6,o7,o8,o9,o10,o11,o12,o13,o14,o15,o16, v1,v2,v3,v4)
	GLdouble	objx
	GLdouble	objy
	GLdouble	objz
	PPCODE:
	{
		GLdouble m[16], p[16], winx, winy, winz;
		GLint v[4];
		int i;
		for (i=0;i<16;i++)
			m[i] = SvNV(ST(i+3));
		for (i=0;i<16;i++)
			p[i] = SvNV(ST(i+3+16));
		for (i=0;i<4;i++)
			v[i] = SvIV(ST(i+3+16+16));
		i = gluProject(objx, objy, objz, m, p, v, &winx, &winy, &winz);
		if (i) {
			EXTEND(sp, 3);
			PUSHs(sv_2mortal(newSVnv(winx)));
			PUSHs(sv_2mortal(newSVnv(winy)));
			PUSHs(sv_2mortal(newSVnv(winz)));
		}
	}

#// gluPwlCurve_c(nurb, count, data, stride, type);
void
gluPwlCurve_c(nurb, count, data, stride, type)
	GLUnurbsObj *	nurb
	GLint	count
	void *	data
	GLint	stride
	GLenum	type
	CODE:
	gluPwlCurve(nurb, count, data, stride, type);


#// gluQuadricDrawStyle(quad, draw);
void
gluQuadricDrawStyle(quad, draw)
	GLUquadricObj *	quad
	GLenum	draw

#// gluQuadricNormals(quad, normal);
void
gluQuadricNormals(quad, normal)
	GLUquadricObj *	quad
	GLenum	normal

#// gluQuadricOrientation(quad, orientation);
void
gluQuadricOrientation(quad, orientation)
	GLUquadricObj *	quad
	GLenum	orientation

#// gluQuadricTexture(quad, texture);
void
gluQuadricTexture(quad, texture)
	GLUquadricObj *	quad
	GLboolean	texture

#//# gluScaleImage_s($format, $wIn, $hIn, $typeIn, (PACKED)dataIn, $wOut, $hOut, $typeOut, (PACKED)dataOut);
GLint
gluScaleImage_s(format, wIn, hIn, typeIn, dataIn, wOut, hOut, typeOut, dataOut)
	GLenum	format
	GLsizei	wIn
	GLsizei	hIn
	GLenum	typeIn
	SV *	dataIn
	GLsizei	wOut
	GLsizei	hOut
	GLenum	typeOut
	SV *	dataOut
	CODE:
	{
		GLvoid * inptr, * outptr;
		STRLEN discard;
		ELI(dataIn, wIn, hIn, format, typeIn, gl_pixelbuffer_unpack);
		ELI(dataOut, wOut, hOut, format, typeOut, gl_pixelbuffer_pack);
		inptr = SvPV(dataIn, discard);
		outptr = SvPV(dataOut, discard);
		RETVAL = gluScaleImage(format, wIn, hIn, typeIn, inptr, wOut, hOut, typeOut, outptr);
	}
	OUTPUT:
	RETVAL

#// gluSphere(quad, radius, slices, stacks);
void
gluSphere(quad, radius, slices, stacks)
	GLUquadricObj *	quad
	GLdouble	radius
	GLint	slices
	GLint	stacks

#ifdef GLU_VERSION_1_2

#// gluGetTessProperty_p(tess, property);
GLdouble
gluGetTessProperty_p(tess, property)
	PGLUtess *	tess
	GLenum	property
	CODE:
	{
		GLdouble param;
		gluGetTessProperty(tess->triangulator, property, &param);
		RETVAL = param;
	}
	OUTPUT:
	RETVAL

#// #gluNurbsCallback_p(nurb, which, handler, ...);
#void
#gluNurbsCallback_p(nurb, which, handler, ...)

#// gluNurbsCallbackDataEXT
#void
#gluNurbsCallbackDataEXT

#// gluQuadricCallback
#void
#gluQuadricCallback

#// gluTessBeginContour(tess);
void
gluTessBeginContour(tess)
	PGLUtess *	tess
	CODE:
	gluTessBeginContour(tess->triangulator);

#// gluTessEndContour(tess);
void
gluTessEndContour(tess)
	PGLUtess *	tess
	CODE:
	gluTessEndContour(tess->triangulator);

#// gluTessBeginPolygon(tess, ...);
void
gluTessBeginPolygon(tess, ...)
	PGLUtess *	tess
	CODE:
	{
delete_polygon_data()
		if (items > 1) {
			tess->polygon_data = newSVsv(ST(1));
		}
              	if (!tess->vertex_datas)
			tess->vertex_datas = newAV();
                gluTessBeginPolygon(tess->triangulator, tess);
	}

#// gluTessEndPolygon(tess);
void
gluTessEndPolygon(tess)
	PGLUtess *	tess
	CODE:
	{
                gluTessEndPolygon(tess->triangulator);
delete_vertex_datas()
delete_tess_datas()
delete_polygon_data()
	}

#// gluTessNormal(tess, valueX, valueY, valueZ)
void
gluTessNormal(tess, valueX, valueY, valueZ)
	PGLUtess *	tess
	GLdouble	valueX
	GLdouble	valueY
	GLdouble	valueZ
	CODE:
	gluTessNormal(tess->triangulator, valueX, valueY, valueZ);

#// gluTessProperty(tess, which, data);
void
gluTessProperty(tess, which, data)
	PGLUtess *	tess
	GLenum	which
	GLdouble	data
	CODE:
	gluTessProperty(tess->triangulator, which, data);

#// gluTessCallback(tess, which, ...);
void
gluTessCallback(tess, which, ...)
	PGLUtess *	tess
	GLenum	which
	CODE:
	{
		switch (which) {
		case GLU_TESS_BEGIN:
		case GLU_TESS_BEGIN_DATA:
			if (tess->begin_callback) {
				SvREFCNT_dec(tess->begin_callback);
				tess->begin_callback = 0;
			}
			break;
		case GLU_TESS_END:
		case GLU_TESS_END_DATA:
			if (tess->end_callback) {
				SvREFCNT_dec(tess->end_callback);
				tess->end_callback = 0;
			}
			break;
		case GLU_TESS_VERTEX:
		case GLU_TESS_VERTEX_DATA:
			if (tess->vertex_callback) {
				SvREFCNT_dec(tess->vertex_callback);
				tess->vertex_callback = 0;
			}
			break;
		case GLU_TESS_ERROR:
		case GLU_TESS_ERROR_DATA:
			if (tess->error_callback) {
				SvREFCNT_dec(tess->error_callback);
				tess->error_callback = 0;
			}
			break;
		case GLU_TESS_COMBINE:
		case GLU_TESS_COMBINE_DATA:
			if (tess->combine_callback) {
				SvREFCNT_dec(tess->combine_callback);
				tess->combine_callback = 0;
			}
			break;
		case GLU_TESS_EDGE_FLAG:
		case GLU_TESS_EDGE_FLAG_DATA:
			if (tess->edgeFlag_callback) {
				SvREFCNT_dec(tess->edgeFlag_callback);
				tess->edgeFlag_callback = 0;
			}
			break;
		}

                if (items > 2) {
			SV * callback;
                        if (SvPOK(ST(2))
                            && sv_eq(ST(2), sv_2mortal(newSVpv("DEFAULT", 0)))) {
				callback = newSViv(1);
				switch (which) {
				case GLU_TESS_BEGIN_DATA:
					which = GLU_TESS_BEGIN; break;
				case GLU_TESS_END_DATA:
					which = GLU_TESS_END; break;
				case GLU_TESS_ERROR_DATA:
					which = GLU_TESS_ERROR; break;
				case GLU_TESS_EDGE_FLAG_DATA:
					which = GLU_TESS_EDGE_FLAG; break;
                                case GLU_TESS_VERTEX:
					which = GLU_TESS_VERTEX_DATA; break; /* vertex data handler has less overhead and both pass opaque pointers anyway */
                                }
                        } else if (!SvROK(ST(2)) || SvTYPE(SvRV(ST(2))) != SVt_PVCV) {
                            croak("3rd argument to gluTessCallback must be a perl code ref");
                        } else {
                            callback = newSVsv(ST(2));
                        }
			switch (which) {
			case GLU_TESS_BEGIN:
				tess->begin_callback = callback;
				gluTessCallback(tess->triangulator, GLU_TESS_BEGIN_DATA, (void (CALLBACK*)()) _s_marshal_glu_t_callback_begin);
				break;
			case GLU_TESS_BEGIN_DATA:
				tess->begin_callback = callback;
				gluTessCallback(tess->triangulator, GLU_TESS_BEGIN_DATA, (void (CALLBACK*)()) _s_marshal_glu_t_callback_begin_data);
				break;
			case GLU_TESS_END:
				tess->end_callback = callback;
				gluTessCallback(tess->triangulator, GLU_TESS_END_DATA, (void (CALLBACK*)()) _s_marshal_glu_t_callback_end);
				break;
			case GLU_TESS_END_DATA:
				tess->end_callback = callback;
				gluTessCallback(tess->triangulator, GLU_TESS_END_DATA, (void (CALLBACK*)()) _s_marshal_glu_t_callback_end_data);
				break;
			case GLU_TESS_VERTEX:
                                tess->use_vertex_data = TRUE;
				tess->vertex_callback = callback;
				gluTessCallback(tess->triangulator, GLU_TESS_VERTEX, (void (CALLBACK*)()) _s_marshal_glu_t_callback_vertex);
				break;
			case GLU_TESS_VERTEX_DATA:
                                tess->use_vertex_data = FALSE;
				tess->vertex_callback = callback;
				gluTessCallback(tess->triangulator, GLU_TESS_VERTEX_DATA, (void (CALLBACK*)()) _s_marshal_glu_t_callback_vertex_data);
				break;
			case GLU_TESS_ERROR:
				tess->error_callback = callback;
				gluTessCallback(tess->triangulator, GLU_TESS_ERROR_DATA, (void (CALLBACK*)()) _s_marshal_glu_t_callback_error);
				break;
			case GLU_TESS_ERROR_DATA:
				tess->error_callback = callback;
				gluTessCallback(tess->triangulator, GLU_TESS_ERROR_DATA, (void (CALLBACK*)()) _s_marshal_glu_t_callback_error_data);
				break;
			case GLU_TESS_COMBINE:
			case GLU_TESS_COMBINE_DATA:
				tess->combine_callback = callback;
				gluTessCallback(tess->triangulator, GLU_TESS_COMBINE_DATA, (void (CALLBACK*)()) _s_marshal_glu_t_callback_combine);
				break;
			case GLU_TESS_EDGE_FLAG:
				tess->edgeFlag_callback = callback;
				gluTessCallback(tess->triangulator, GLU_TESS_EDGE_FLAG_DATA, (void (CALLBACK*)()) _s_marshal_glu_t_callback_edgeFlag);
				break;
			case GLU_TESS_EDGE_FLAG_DATA:
				tess->edgeFlag_callback = callback;
				gluTessCallback(tess->triangulator, GLU_TESS_EDGE_FLAG_DATA, (void (CALLBACK*)()) _s_marshal_glu_t_callback_edgeFlag_data);
				break;
			}
		}
	}
	

#endif

#// gluTessVertex(tess, x, y, z);
void
gluTessVertex_p(tess, x, y, z, ...)
	PGLUtess *	tess
	GLdouble	x
	GLdouble	y
	GLdouble	z
	CODE:
	{
                int i;
                int j = 3;
                AV * vds = tess->vertex_datas;
                int size = 3 + (tess->do_colors ? 4 : 0) + (tess->do_normals ? 3 : 0);
		GLdouble* data = malloc(sizeof(GLdouble) * size);
                if (!vds) croak("Missing vertex data storage during gluTessVertex");
                if (data == NULL) croak("Couldn't allocate vertex during gluTessVertex");
		data[0] = x;
		data[1] = y;
		data[2] = z;
                av_push(vds, newSViv(PTR2IV(data))); /* store for freeing later */
                if (tess->do_colors) {
                    int J = j + 4;
                    if (tess->do_normals) {
                        if (items != 12 && items != 11) croak("gluTessVertex_p(tess, x,y,z, r,g,b,a, nx,ny,nz [,polygon_data])");
                    } else {
                        if (items != 9  && items != 8 ) croak("gluTessVertex_p(tess, x,y,z, r,g,b,a [,polygon_data])");
                    }
                    for ( ; j < J; j++) data[j] = (GLdouble)SvNV(ST(j+1));
                } else {
                    if (tess->do_normals) {
                        if (items != 8 && items != 7) croak("gluTessVertex_p(tess, x,y,z, nx,ny,nz [,polygon_data])");
                    } else {
                        if (items != 5 && items != 4) croak("gluTessVertex_p(tess, x,y,z [,polygon_data])");
                    }
                }
                if (tess->do_normals) {
                    int J = j + 3;
                    for ( ; j < J; j++) data[j] = (GLdouble)SvNV(ST(j+1));
                }
		if (tess->use_vertex_data) {
                    PGLUtess * opaque = malloc(sizeof(PGLUtess));
                    if (!opaque) croak("Couldn't allocate storage for vertex opaque data");
		    opaque->triangulator     = tess->triangulator;
                    opaque->vertex_datas     = tess->vertex_datas;
                    opaque->vertex_callback  = tess->vertex_callback;
                    opaque->combine_callback = tess->combine_callback;
                    opaque->vertex_data      = data;
                    opaque->polygon_data     = (items > j+1) ? newSVsv(ST(j+1)) : 0;
                    opaque->use_vertex_data  = TRUE;
                    opaque->do_colors        = tess->do_colors;
                    opaque->do_normals       = tess->do_normals;
                    if (! tess->tess_datas) tess->tess_datas = newAV();
                    av_push(tess->tess_datas, newSViv(PTR2IV(opaque)));
                    gluTessVertex(tess->triangulator, data, (void*)opaque);
		} else {
                    gluTessVertex(tess->triangulator, data, data);
                }
	}

#//# gluUnProject_p($winx,$winy,$winz, @m4x4, @o4x4, $v1,$v2,$v3,$v4);
void
gluUnProject_p(winx,winy,winz, m1,m2,m3,m4,m5,m6,m7,m8,m9,m10,m11,m12,m13,m14,m15,m16, o1,o2,o3,o4,o5,o6,o7,o8,o9,o10,o11,o12,o13,o14,o15,o16, v1,v2,v3,v4)
	GLdouble	winx
	GLdouble	winy
	GLdouble	winz
	PPCODE:
	{
		GLdouble m[16], p[16], objx, objy, objz;
		GLint v[4];
		int i;

		for (i=0;i<16;i++)
			m[i] = SvNV(ST(i+3));
		for (i=0;i<16;i++)
			p[i] = SvNV(ST(i+3+16));
		for (i=0;i<4;i++)
			v[i] = SvIV(ST(i+3+16+16));

		i = gluUnProject(winx,winy,winz, m, p, v, &objx,&objy,&objz);

		if (i) {
			EXTEND(sp, 3);
			PUSHs(sv_2mortal(newSVnv(objx)));
			PUSHs(sv_2mortal(newSVnv(objy)));
			PUSHs(sv_2mortal(newSVnv(objz)));
		}
	}

#endif

#endif /* End IN_POGL_GLU_XS */