/*glu.ScaleImage(format, widthin, heightin, pixelsArrayin, widthout, heightout) -> error, pixelsArrayout */
static int luaglu_scaleimage(lua_State *L)
{
GLenum format;
GLfloat *pixelsin, *pixelsout;
int widthout, heightout, sizeout, depth, error;
format = luagl_get_gl_enum(L, 1);
depth = luaglu_get_depth(format);
if (depth == 0)
luaL_argerror(L, 1, "unknown format");
luagl_get_arrayf(L, 4, &pixelsin);
widthout = luaL_checkinteger(L, 5);
heightout = luaL_checkinteger(L, 6);
sizeout = widthout*heightout*depth;
pixelsout = LUAGL_NEW_ARRAY(GLfloat, sizeout);
error = gluScaleImage(format, luaL_checkinteger(L, 2), luaL_checkinteger(L, 3), GL_FLOAT, pixelsin,
widthout, heightout, GL_FLOAT, pixelsout);
lua_pushnumber(L, error);
if (error == 0)
luagl_push_arrayf(L, pixelsout, sizeout);
else
lua_pushnil(L);
LUAGL_DELETE_ARRAY(pixelsin);
LUAGL_DELETE_ARRAY(pixelsout);
return 2;
}
/* PickMatrix( x, y, deltax, deltay, viewportArray) -> none */
static int luaglu_pick_matrix(lua_State *L)
{
GLint *vp;
int num_args;
if (!( lua_isnumber(L, 1) && lua_isnumber(L, 2) && lua_isnumber(L, 3)
&& lua_isnumber(L, 4)))
{
luaL_error(L, "incorrect argument to function 'glu.PickMatrix'");
return 0;
}
if(!lua_istable(L, 5) || (num_args = luagl_get_arrayi(L, 5, &vp)) < 4)
{
luaL_error(L, "incorrect argument to function 'glu.PickMatrix'");
return 0;
}
gluPickMatrix(
(GLdouble)lua_tonumber(L, 1), (GLdouble)lua_tonumber(L, 2), (GLdouble)lua_tonumber(L, 3),
(GLdouble)lua_tonumber(L, 4), vp);
LUAGL_DELETE_ARRAY(vp);
return 0;
}
/* nurb:PwlCurve (dataArray, type) -> nurb */
static int luaglu_pwl_curve(lua_State *L)
{
LuaGLUnurb *lnurb=luaglu_checknurb(L,1);
GLint ptsCount=0;
GLint stride;
GLfloat *points;
int size=1;
GLenum e;
e = luaglu_get_gl_enum(L, 3);
switch(e)
{
case GL_MAP1_INDEX:
case GL_MAP2_INDEX:
case GL_MAP1_TEXTURE_COORD_1:
case GL_MAP2_TEXTURE_COORD_1:
size = 1;
break;
case GLU_MAP1_TRIM_2:
case GL_MAP1_TEXTURE_COORD_2:
case GL_MAP2_TEXTURE_COORD_2:
size = 2;
break;
case GLU_MAP1_TRIM_3:
case GL_MAP1_VERTEX_3:
case GL_MAP2_VERTEX_3:
case GL_MAP1_NORMAL:
case GL_MAP2_NORMAL:
case GL_MAP1_TEXTURE_COORD_3:
case GL_MAP2_TEXTURE_COORD_3:
size = 3;
break;
case GL_MAP1_VERTEX_4:
case GL_MAP2_VERTEX_4:
case GL_MAP1_COLOR_4:
case GL_MAP2_COLOR_4:
case GL_MAP1_TEXTURE_COORD_4:
case GL_MAP2_TEXTURE_COORD_4:
size = 4;
break;
}
ptsCount=luagl_get_arrayf(L, 2, &points);
ptsCount/=size;
stride=size;
gluPwlCurve (lnurb->nurb,ptsCount,points,stride,e);
LUAGL_DELETE_ARRAY(points);
lua_pushvalue(L,1);
return 1;
}
/* PickMatrix( x, y, deltax, deltay, viewportArray) -> none */
static int luaglu_pick_matrix(lua_State *L)
{
GLint *vp;
int n;
n = luagl_get_arrayi(L, 5, &vp);
if (n < 4)
luaL_argerror(L, 5, "invalid number of elements in the matrix table (n<4).");
gluPickMatrix(luaL_checknumber(L, 1), luaL_checknumber(L, 2),
luaL_checknumber(L, 3), luaL_checknumber(L, 4), vp);
LUAGL_DELETE_ARRAY(vp);
return 0;
}
/*or BuildMipmaps(textureData) -> error */
static int luaglu_build_2d_mipmaps(lua_State *L)
{
if (lua_isnumber(L, 1))
{
lua_pushnumber(L, gluBuild2DMipmaps(GL_TEXTURE_2D, (GLint)luaL_checkinteger(L, 1), luaL_checkinteger(L, 2), luaL_checkinteger(L, 3),
luagl_get_gl_enum(L, 4), luagl_get_gl_enum(L, 5), luagl_checkuserdata(L, 6)));
}
else
{
/* Old form, using only one table */
GLenum target, format, type;
GLubyte *pixels;
GLint internalFormat;
GLsizei width, height, w, h;
h = luagl_get_array2uc(L, 1, &pixels, &w);
if (h==-1)
luaL_argerror(L, 1, "must be a 2D array");
lua_getfield(L, 1, "target"); target = luagl_get_gl_enum(L, -1); lua_remove(L, -1);
lua_getfield(L, 1, "format"); format = luagl_get_gl_enum(L, -1); lua_remove(L, -1);
lua_getfield(L, 1, "type"); type = luagl_get_gl_enum(L, -1); lua_remove(L, -1);
lua_getfield(L, 1, "width"); width = (GLsizei)luaL_checkinteger(L, -1); lua_remove(L, -1);
lua_getfield(L, 1, "height"); height = (GLsizei)luaL_checkinteger(L, -1); lua_remove(L, -1);
lua_getfield(L, 1, "components"); internalFormat = (GLint)luaL_checkinteger(L, -1); lua_remove(L, -1);
w /= internalFormat;
if (width > w)
width = w;
if (height > h)
height = h;
lua_pushnumber(L, gluBuild2DMipmaps(target, internalFormat, width, height, format, type, pixels));
LUAGL_DELETE_ARRAY(pixels);
}
return 1;
}
/*Build2DMipmaps(textureData) -> error */
static int luaglu_build_2d_mipmaps(lua_State *L)
{
GLenum target, format, type;
GLubyte *pixels;
GLint internalFormat;
GLsizei width, height, w, h;
int result;
if(!lua_istable(L, 1))
LUAGL_SHOWERROR("incorrect argument to function 'glu.Build2DMipmaps'");
lua_pushstring(L, "target"); lua_gettable(L, 1); target = luaglu_get_gl_enum(L, -1); lua_pop(L, 1);
lua_pushstring(L, "format"); lua_gettable(L, 1); format = luaglu_get_gl_enum(L, -1); lua_pop(L, 1);
lua_pushstring(L, "type"); lua_gettable(L, 1); type = luaglu_get_gl_enum(L, -1); lua_pop(L, 1);
lua_pushstring(L, "width"); lua_gettable(L, 1); width = (GLsizei)lua_tonumber(L, -1); lua_pop(L, 1);
lua_pushstring(L, "height"); lua_gettable(L, 1); height = (GLsizei)lua_tonumber(L, -1); lua_pop(L, 1);
lua_pushstring(L, "components"); lua_gettable(L, 1); internalFormat = (GLint)lua_tonumber(L, -1); lua_pop(L, 1);
h = luagl_get_array2ubyte(L, 1, &pixels, &w);
w /= internalFormat;
if (width > w)
width = w;
if (height > h)
height = h;
result = gluBuild2DMipmaps(target, internalFormat, width,
height, format, type, pixels);
LUAGL_DELETE_ARRAY(pixels);
lua_pushnumber(L, result);
return 1;
}
/*BuildMipmaps(components, format, pixelsArray) -> error */
static int luaglu_build_mipmaps(lua_State *L)
{
GLubyte *pixels;
GLsizei width, height;
int components;
components = luaL_checkinteger(L, 1);
height = luagl_get_array2uc(L, 3, &pixels, &width);
if (height != -1)
{
lua_pushnumber(L, gluBuild2DMipmaps(GL_TEXTURE_2D, components, width/components, height,
luagl_get_gl_enum(L, 2), GL_UNSIGNED_BYTE, pixels));
}
else
{
/* if not 2D, get 1D */
width = luagl_get_arrayuc(L, 3, &pixels);
lua_pushnumber(L, gluBuild1DMipmaps(GL_TEXTURE_1D, components, width/components,
luagl_get_gl_enum(L, 2), GL_UNSIGNED_BYTE, pixels));
}
LUAGL_DELETE_ARRAY(pixels);
return 1;
}
/* nurb:Surface (sKnotsArray, tKnotsArray, controlArray, type) -> nurb */
static int luaglu_nurbs_surface(lua_State *L)
{
LuaGLUnurb *lnurb=luaglu_checknurb(L,1);
GLint sKnotCount=0;
GLint tKnotCount=0;
GLfloat *sKnots;
GLfloat *tKnots;
GLint sStride,tStride;
GLint sPtsCount,tPtsCount;
GLfloat *points;
GLint sOrder,tOrder;
GLenum e;
int size=1;
e = luaglu_get_gl_enum(L, 5);
switch(e)
{
case GL_MAP1_INDEX:
case GL_MAP2_INDEX:
case GL_MAP1_TEXTURE_COORD_1:
case GL_MAP2_TEXTURE_COORD_1:
size = 1;
break;
case GLU_MAP1_TRIM_2:
case GL_MAP1_TEXTURE_COORD_2:
case GL_MAP2_TEXTURE_COORD_2:
size = 2;
break;
case GLU_MAP1_TRIM_3:
case GL_MAP1_VERTEX_3:
case GL_MAP2_VERTEX_3:
case GL_MAP1_NORMAL:
case GL_MAP2_NORMAL:
case GL_MAP1_TEXTURE_COORD_3:
case GL_MAP2_TEXTURE_COORD_3:
size = 3;
break;
case GL_MAP1_VERTEX_4:
case GL_MAP2_VERTEX_4:
case GL_MAP1_COLOR_4:
case GL_MAP2_COLOR_4:
case GL_MAP1_TEXTURE_COORD_4:
case GL_MAP2_TEXTURE_COORD_4:
size = 4;
break;
}
sKnotCount=luagl_get_arrayf(L, 2, &sKnots);
tKnotCount=luagl_get_arrayf(L, 3, &tKnots);
tPtsCount = luagl_get_array2f(L, 4, &points, &sPtsCount);
sPtsCount /= size;
if (tPtsCount==-1)
{
LUAGL_DELETE_ARRAY(sKnots);
LUAGL_DELETE_ARRAY(tKnots);
luaL_argerror(L, 4, "must be a table of tables");
}
sStride=size;
tStride=size*sPtsCount;
sOrder=sKnotCount-sPtsCount;
tOrder=tKnotCount-tPtsCount;
if (sOrder<1 || tOrder<1)
{
LUAGL_DELETE_ARRAY(sKnots);
LUAGL_DELETE_ARRAY(tKnots);
LUAGL_DELETE_ARRAY(points);
luaL_error(L,"incorrect order");
}
gluNurbsSurface (lnurb->nurb,sKnotCount,sKnots,tKnotCount,tKnots,sStride,tStride,points,sOrder,tOrder,e);
LUAGL_DELETE_ARRAY(sKnots);
LUAGL_DELETE_ARRAY(tKnots);
LUAGL_DELETE_ARRAY(points);
lua_pushvalue(L,1);
return 1;
}
/* nurb:Curve (knotsArray, controlArray, type) -> nurb */
static int luaglu_nurbs_curve(lua_State *L)
{
LuaGLUnurb *lnurb=luaglu_checknurb(L,1);
GLint ptsCount=0;
GLint knotCount=0;
GLfloat *knots;
GLint stride;
GLfloat *points;
GLint order;
int size=1;
GLenum e;
e = luaglu_get_gl_enum(L, 4);
switch(e)
{
case GL_MAP1_INDEX:
case GL_MAP2_INDEX:
case GL_MAP1_TEXTURE_COORD_1:
case GL_MAP2_TEXTURE_COORD_1:
size = 1;
break;
case GLU_MAP1_TRIM_2:
case GL_MAP1_TEXTURE_COORD_2:
case GL_MAP2_TEXTURE_COORD_2:
size = 2;
break;
case GLU_MAP1_TRIM_3:
case GL_MAP1_VERTEX_3:
case GL_MAP2_VERTEX_3:
case GL_MAP1_NORMAL:
case GL_MAP2_NORMAL:
case GL_MAP1_TEXTURE_COORD_3:
case GL_MAP2_TEXTURE_COORD_3:
size = 3;
break;
case GL_MAP1_VERTEX_4:
case GL_MAP2_VERTEX_4:
case GL_MAP1_COLOR_4:
case GL_MAP2_COLOR_4:
case GL_MAP1_TEXTURE_COORD_4:
case GL_MAP2_TEXTURE_COORD_4:
size = 4;
break;
}
knotCount=luagl_get_arrayf(L, 2, &knots);
ptsCount=luagl_get_arrayf(L, 3, &points);
ptsCount/=size;
stride=size;
order=knotCount-ptsCount;
if(order<1)
{
LUAGL_DELETE_ARRAY(knots);
LUAGL_DELETE_ARRAY(points);
luaL_error(L,"incorrect order (<1)");
}
gluNurbsCurve (lnurb->nurb,knotCount,knots,stride,points,order,e);
LUAGL_DELETE_ARRAY(knots);
LUAGL_DELETE_ARRAY(points);
lua_pushvalue(L,1);
return 1;
}
