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Diffstat (limited to 'src/glu/mini/glu.c')
| -rw-r--r-- | src/glu/mini/glu.c | 417 |
1 files changed, 0 insertions, 417 deletions
diff --git a/src/glu/mini/glu.c b/src/glu/mini/glu.c deleted file mode 100644 index 3e79aa86dee..00000000000 --- a/src/glu/mini/glu.c +++ /dev/null @@ -1,417 +0,0 @@ -/* $Id: glu.c,v 1.2 2003-08-22 20:11:43 brianp Exp $ */ - -/* - * Mesa 3-D graphics library - * Version: 3.5 - * Copyright (C) 1995-2001 Brian Paul - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Library General Public - * License as published by the Free Software Foundation; either - * version 2 of the License, or (at your option) any later version. - * - * This library 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 - * Library General Public License for more details. - * - * You should have received a copy of the GNU Library General Public - * License along with this library; if not, write to the Free - * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - */ - - -#ifdef PC_HEADER -#include "all.h" -#else -#include <assert.h> -#include <math.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include "gluP.h" -#endif - - -/* - * Miscellaneous utility functions - */ - - -#ifndef M_PI -#define M_PI 3.1415926536 -#endif -#define EPS 0.00001 - -#ifndef GLU_INCOMPATIBLE_GL_VERSION -#define GLU_INCOMPATIBLE_GL_VERSION 100903 -#endif - - -void GLAPIENTRY -gluLookAt(GLdouble eyex, GLdouble eyey, GLdouble eyez, - GLdouble centerx, GLdouble centery, GLdouble centerz, - GLdouble upx, GLdouble upy, GLdouble upz) -{ - GLfloat m[16]; - GLfloat x[3], y[3], z[3]; - GLfloat mag; - - /* Make rotation matrix */ - - /* Z vector */ - z[0] = eyex - centerx; - z[1] = eyey - centery; - z[2] = eyez - centerz; - mag = sqrt(z[0] * z[0] + z[1] * z[1] + z[2] * z[2]); - if (mag) { /* mpichler, 19950515 */ - z[0] /= mag; - z[1] /= mag; - z[2] /= mag; - } - - /* Y vector */ - y[0] = upx; - y[1] = upy; - y[2] = upz; - - /* X vector = Y cross Z */ - x[0] = y[1] * z[2] - y[2] * z[1]; - x[1] = -y[0] * z[2] + y[2] * z[0]; - x[2] = y[0] * z[1] - y[1] * z[0]; - - /* Recompute Y = Z cross X */ - y[0] = z[1] * x[2] - z[2] * x[1]; - y[1] = -z[0] * x[2] + z[2] * x[0]; - y[2] = z[0] * x[1] - z[1] * x[0]; - - /* mpichler, 19950515 */ - /* cross product gives area of parallelogram, which is < 1.0 for - * non-perpendicular unit-length vectors; so normalize x, y here - */ - - mag = sqrt(x[0] * x[0] + x[1] * x[1] + x[2] * x[2]); - if (mag) { - x[0] /= mag; - x[1] /= mag; - x[2] /= mag; - } - - mag = sqrt(y[0] * y[0] + y[1] * y[1] + y[2] * y[2]); - if (mag) { - y[0] /= mag; - y[1] /= mag; - y[2] /= mag; - } - -#define M(row,col) m[col*4+row] - M(0, 0) = x[0]; - M(0, 1) = x[1]; - M(0, 2) = x[2]; - M(0, 3) = 0.0; - M(1, 0) = y[0]; - M(1, 1) = y[1]; - M(1, 2) = y[2]; - M(1, 3) = 0.0; - M(2, 0) = z[0]; - M(2, 1) = z[1]; - M(2, 2) = z[2]; - M(2, 3) = 0.0; - M(3, 0) = 0.0; - M(3, 1) = 0.0; - M(3, 2) = 0.0; - M(3, 3) = 1.0; -#undef M - glMultMatrixf(m); - - /* Translate Eye to Origin */ - glTranslatef(-eyex, -eyey, -eyez); - -} - - - -void GLAPIENTRY -gluOrtho2D(GLdouble left, GLdouble right, GLdouble bottom, GLdouble top) -{ - glOrtho(left, right, bottom, top, -1.0, 1.0); -} - - - -static void -frustum(GLfloat left, GLfloat right, - GLfloat bottom, GLfloat top, - GLfloat nearval, GLfloat farval) -{ - GLfloat x, y, a, b, c, d; - GLfloat m[16]; - - x = (2.0 * nearval) / (right - left); - y = (2.0 * nearval) / (top - bottom); - a = (right + left) / (right - left); - b = (top + bottom) / (top - bottom); - c = -(farval + nearval) / ( farval - nearval); - d = -(2.0 * farval * nearval) / (farval - nearval); - -#define M(row,col) m[col*4+row] - M(0,0) = x; M(0,1) = 0.0F; M(0,2) = a; M(0,3) = 0.0F; - M(1,0) = 0.0F; M(1,1) = y; M(1,2) = b; M(1,3) = 0.0F; - M(2,0) = 0.0F; M(2,1) = 0.0F; M(2,2) = c; M(2,3) = d; - M(3,0) = 0.0F; M(3,1) = 0.0F; M(3,2) = -1.0F; M(3,3) = 0.0F; -#undef M - - glMultMatrixf(m); -} - - -void GLAPIENTRY -gluPerspective(GLdouble fovy, GLdouble aspect, GLdouble zNear, GLdouble zFar) -{ - GLfloat xmin, xmax, ymin, ymax; - - ymax = zNear * tan(fovy * M_PI / 360.0); - ymin = -ymax; - xmin = ymin * aspect; - xmax = ymax * aspect; - - /* don't call glFrustum() because of error semantics (covglu) */ - frustum(xmin, xmax, ymin, ymax, zNear, zFar); -} - - - -void GLAPIENTRY -gluPickMatrix(GLdouble x, GLdouble y, - GLdouble width, GLdouble height, GLint viewport[4]) -{ - GLfloat m[16]; - GLfloat sx, sy; - GLfloat tx, ty; - - sx = viewport[2] / width; - sy = viewport[3] / height; - tx = (viewport[2] + 2.0 * (viewport[0] - x)) / width; - ty = (viewport[3] + 2.0 * (viewport[1] - y)) / height; - -#define M(row,col) m[col*4+row] - M(0, 0) = sx; - M(0, 1) = 0.0; - M(0, 2) = 0.0; - M(0, 3) = tx; - M(1, 0) = 0.0; - M(1, 1) = sy; - M(1, 2) = 0.0; - M(1, 3) = ty; - M(2, 0) = 0.0; - M(2, 1) = 0.0; - M(2, 2) = 1.0; - M(2, 3) = 0.0; - M(3, 0) = 0.0; - M(3, 1) = 0.0; - M(3, 2) = 0.0; - M(3, 3) = 1.0; -#undef M - - glMultMatrixf(m); -} - - - -const GLubyte *GLAPIENTRY -gluErrorString(GLenum errorCode) -{ - static char *tess_error[] = { - "missing gluBeginPolygon", - "missing gluBeginContour", - "missing gluEndPolygon", - "missing gluEndContour", - "misoriented or self-intersecting loops", - "coincident vertices", - "colinear vertices", - "FIST recovery process fatal error" - }; - static char *nurbs_error[] = { - "spline order un-supported", - "too few knots", - "valid knot range is empty", - "decreasing knot sequence knot", - "knot multiplicity greater than order of spline", - "endcurve() must follow bgncurve()", - "bgncurve() must precede endcurve()", - "missing or extra geometric data", - "can't draw pwlcurves", - "missing bgncurve()", - "missing bgnsurface()", - "endtrim() must precede endsurface()", - "bgnsurface() must precede endsurface()", - "curve of improper type passed as trim curve", - "bgnsurface() must precede bgntrim()", - "endtrim() must follow bgntrim()", - "bgntrim() must precede endtrim()", - "invalid or missing trim curve", - "bgntrim() must precede pwlcurve()", - "pwlcurve referenced twice", - "pwlcurve and nurbscurve mixed", - "improper usage of trim data type", - "nurbscurve referenced twice", - "nurbscurve and pwlcurve mixed", - "nurbssurface referenced twice", - "invalid property", - "endsurface() must follow bgnsurface()", - "misoriented trim curves", - "intersecting trim curves", - "UNUSED", - "unconnected trim curves", - "unknown knot error", - "negative vertex count encountered", - "negative byte-stride encountered", - "unknown type descriptor", - "null control array or knot vector", - "duplicate point on pwlcurve" - }; - - /* GL Errors */ - if (errorCode == GL_NO_ERROR) { - return (GLubyte *) "no error"; - } - else if (errorCode == GL_INVALID_VALUE) { - return (GLubyte *) "invalid value"; - } - else if (errorCode == GL_INVALID_ENUM) { - return (GLubyte *) "invalid enum"; - } - else if (errorCode == GL_INVALID_OPERATION) { - return (GLubyte *) "invalid operation"; - } - else if (errorCode == GL_STACK_OVERFLOW) { - return (GLubyte *) "stack overflow"; - } - else if (errorCode == GL_STACK_UNDERFLOW) { - return (GLubyte *) "stack underflow"; - } - else if (errorCode == GL_OUT_OF_MEMORY) { - return (GLubyte *) "out of memory"; - } - /* GLU Errors */ - else if (errorCode == GLU_NO_ERROR) { - return (GLubyte *) "no error"; - } - else if (errorCode == GLU_INVALID_ENUM) { - return (GLubyte *) "invalid enum"; - } - else if (errorCode == GLU_INVALID_VALUE) { - return (GLubyte *) "invalid value"; - } - else if (errorCode == GLU_OUT_OF_MEMORY) { - return (GLubyte *) "out of memory"; - } - else if (errorCode == GLU_INCOMPATIBLE_GL_VERSION) { - return (GLubyte *) "incompatible GL version"; - } - else if (errorCode >= GLU_TESS_ERROR1 && errorCode <= GLU_TESS_ERROR8) { - return (GLubyte *) tess_error[errorCode - GLU_TESS_ERROR1]; - } - else if (errorCode >= GLU_NURBS_ERROR1 && errorCode <= GLU_NURBS_ERROR37) { - return (GLubyte *) nurbs_error[errorCode - GLU_NURBS_ERROR1]; - } - else { - return NULL; - } -} - - - -/* - * New in GLU 1.1 - */ - -const GLubyte *GLAPIENTRY -gluGetString(GLenum name) -{ - static char *extensions = "GL_EXT_abgr"; - static char *version = "1.1 Mesa 3.5"; - - switch (name) { - case GLU_EXTENSIONS: - return (GLubyte *) extensions; - case GLU_VERSION: - return (GLubyte *) version; - default: - return NULL; - } -} - - - -#if 0 /* gluGetProcAddressEXT not finalized yet! */ - -#ifdef __cplusplus - /* for BeOS R4.5 */ -void GLAPIENTRY(*gluGetProcAddressEXT(const GLubyte * procName)) (...) -#else -void (GLAPIENTRY * gluGetProcAddressEXT(const GLubyte * procName)) () -#endif -{ - struct proc - { - const char *name; - void *address; - }; - static struct proc procTable[] = { - {"gluGetProcAddressEXT", (void *) gluGetProcAddressEXT}, /* me! */ - - /* new 1.1 functions */ - {"gluGetString", (void *) gluGetString}, - - /* new 1.2 functions */ - {"gluTessBeginPolygon", (void *) gluTessBeginPolygon}, - {"gluTessBeginContour", (void *) gluTessBeginContour}, - {"gluTessEndContour", (void *) gluTessEndContour}, - {"gluTessEndPolygon", (void *) gluTessEndPolygon}, - {"gluGetTessProperty", (void *) gluGetTessProperty}, - - /* new 1.3 functions */ - - {NULL, NULL} - }; - GLuint i; - - for (i = 0; procTable[i].address; i++) { - if (strcmp((const char *) procName, procTable[i].name) == 0) - return (void (GLAPIENTRY *) ()) procTable[i].address; - } - - return NULL; -} - -#endif - - - -/* - * New in GLU 1.3 - */ -#ifdef GLU_VERSION_1_3 -GLboolean GLAPIENTRY -gluCheckExtension(const GLubyte *extName, const GLubyte * extString) -{ - assert(extName); - assert(extString); - { - const int len = strlen((const char *) extName); - const char *start = (const char *) extString; - - while (1) { - const char *c = strstr(start, (const char *) extName); - if (!c) - return GL_FALSE; - - if ((c == start || c[-1] == ' ') && (c[len] == ' ' || c[len] == 0)) - return GL_TRUE; - - start = c + len; - } - } -} -#endif |