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-rw-r--r--plugins/gtkui/gtkglext-gtk2/gdk/gdkglshapes.c868
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diff --git a/plugins/gtkui/gtkglext-gtk2/gdk/gdkglshapes.c b/plugins/gtkui/gtkglext-gtk2/gdk/gdkglshapes.c
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+++ b/plugins/gtkui/gtkglext-gtk2/gdk/gdkglshapes.c
@@ -0,0 +1,868 @@
+/* GdkGLExt - OpenGL Extension to GDK
+ * Copyright (C) 2002-2004 Naofumi Yasufuku
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ */
+
+#include <math.h>
+
+#include <glib.h>
+
+#include "gdkglprivate.h"
+#include "gdkglshapes.h"
+
+#ifdef G_OS_WIN32
+#define WIN32_LEAN_AND_MEAN 1
+#include <windows.h>
+#endif
+
+#include <GL/gl.h>
+#include <GL/glu.h>
+
+/*
+ * The following code is imported from GLUT.
+ */
+
+/* Copyright (c) Mark J. Kilgard, 1994, 1997. */
+
+/**
+(c) Copyright 1993, Silicon Graphics, Inc.
+
+ALL RIGHTS RESERVED
+
+Permission to use, copy, modify, and distribute this software
+for any purpose and without fee is hereby granted, provided
+that the above copyright notice appear in all copies and that
+both the copyright notice and this permission notice appear in
+supporting documentation, and that the name of Silicon
+Graphics, Inc. not be used in advertising or publicity
+pertaining to distribution of the software without specific,
+written prior permission.
+
+THE MATERIAL EMBODIED ON THIS SOFTWARE IS PROVIDED TO YOU
+"AS-IS" AND WITHOUT WARRANTY OF ANY KIND, EXPRESS, IMPLIED OR
+OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY WARRANTY OF
+MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. IN NO
+EVENT SHALL SILICON GRAPHICS, INC. BE LIABLE TO YOU OR ANYONE
+ELSE FOR ANY DIRECT, SPECIAL, INCIDENTAL, INDIRECT OR
+CONSEQUENTIAL DAMAGES OF ANY KIND, OR ANY DAMAGES WHATSOEVER,
+INCLUDING WITHOUT LIMITATION, LOSS OF PROFIT, LOSS OF USE,
+SAVINGS OR REVENUE, OR THE CLAIMS OF THIRD PARTIES, WHETHER OR
+NOT SILICON GRAPHICS, INC. HAS BEEN ADVISED OF THE POSSIBILITY
+OF SUCH LOSS, HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ARISING OUT OF OR IN CONNECTION WITH THE POSSESSION, USE OR
+PERFORMANCE OF THIS SOFTWARE.
+
+US Government Users Restricted Rights
+
+Use, duplication, or disclosure by the Government is subject to
+restrictions set forth in FAR 52.227.19(c)(2) or subparagraph
+(c)(1)(ii) of the Rights in Technical Data and Computer
+Software clause at DFARS 252.227-7013 and/or in similar or
+successor clauses in the FAR or the DOD or NASA FAR
+Supplement. Unpublished-- rights reserved under the copyright
+laws of the United States. Contractor/manufacturer is Silicon
+Graphics, Inc., 2011 N. Shoreline Blvd., Mountain View, CA
+94039-7311.
+
+OpenGL(TM) is a trademark of Silicon Graphics, Inc.
+*/
+
+/*
+ * Cube
+ */
+
+static void
+drawBox(GLfloat size, GLenum type)
+{
+ static GLfloat n[6][3] =
+ {
+ {-1.0, 0.0, 0.0},
+ {0.0, 1.0, 0.0},
+ {1.0, 0.0, 0.0},
+ {0.0, -1.0, 0.0},
+ {0.0, 0.0, 1.0},
+ {0.0, 0.0, -1.0}
+ };
+ static GLint faces[6][4] =
+ {
+ {0, 1, 2, 3},
+ {3, 2, 6, 7},
+ {7, 6, 5, 4},
+ {4, 5, 1, 0},
+ {5, 6, 2, 1},
+ {7, 4, 0, 3}
+ };
+ GLfloat v[8][3];
+ GLint i;
+
+ v[0][0] = v[1][0] = v[2][0] = v[3][0] = -size / 2;
+ v[4][0] = v[5][0] = v[6][0] = v[7][0] = size / 2;
+ v[0][1] = v[1][1] = v[4][1] = v[5][1] = -size / 2;
+ v[2][1] = v[3][1] = v[6][1] = v[7][1] = size / 2;
+ v[0][2] = v[3][2] = v[4][2] = v[7][2] = -size / 2;
+ v[1][2] = v[2][2] = v[5][2] = v[6][2] = size / 2;
+
+ for (i = 5; i >= 0; i--) {
+ glBegin(type);
+ glNormal3fv(&n[i][0]);
+ glVertex3fv(&v[faces[i][0]][0]);
+ glVertex3fv(&v[faces[i][1]][0]);
+ glVertex3fv(&v[faces[i][2]][0]);
+ glVertex3fv(&v[faces[i][3]][0]);
+ glEnd();
+ }
+}
+
+/**
+ * gdk_gl_draw_cube:
+ * @solid: TRUE if the cube should be solid.
+ * @size: length of cube sides.
+ *
+ * Renders a cube.
+ * The cube is centered at the modeling coordinates origin with sides of
+ * length @size.
+ *
+ **/
+void
+gdk_gl_draw_cube (gboolean solid,
+ double size)
+{
+ if (solid)
+ drawBox (size, GL_QUADS);
+ else
+ drawBox (size, GL_LINE_LOOP);
+}
+
+/*
+ * Quadrics
+ */
+
+static GLUquadricObj *quadObj = NULL;
+
+#define QUAD_OBJ_INIT() { if(!quadObj) initQuadObj(); }
+
+static void
+initQuadObj(void)
+{
+ quadObj = gluNewQuadric();
+ if (!quadObj)
+ g_error("out of memory.");
+}
+
+/**
+ * gdk_gl_draw_sphere:
+ * @solid: TRUE if the sphere should be solid.
+ * @radius: the radius of the sphere.
+ * @slices: the number of subdivisions around the Z axis (similar to lines of
+ * longitude).
+ * @stacks: the number of subdivisions along the Z axis (similar to lines of
+ * latitude).
+ *
+ * Renders a sphere centered at the modeling coordinates origin of
+ * the specified @radius. The sphere is subdivided around the Z axis into
+ * @slices and along the Z axis into @stacks.
+ *
+ **/
+void
+gdk_gl_draw_sphere (gboolean solid,
+ double radius,
+ int slices,
+ int stacks)
+{
+ QUAD_OBJ_INIT();
+
+ if (solid)
+ gluQuadricDrawStyle (quadObj, GLU_FILL);
+ else
+ gluQuadricDrawStyle (quadObj, GLU_LINE);
+
+ gluQuadricNormals (quadObj, GLU_SMOOTH);
+
+ /* If we ever changed/used the texture or orientation state
+ of quadObj, we'd need to change it to the defaults here
+ with gluQuadricTexture and/or gluQuadricOrientation. */
+ gluSphere (quadObj, radius, slices, stacks);
+}
+
+/**
+ * gdk_gl_draw_cone:
+ * @solid: TRUE if the cone should be solid.
+ * @base: the radius of the base of the cone.
+ * @height: the height of the cone.
+ * @slices: the number of subdivisions around the Z axis.
+ * @stacks: the number of subdivisions along the Z axis.
+ *
+ * Renders a cone oriented along the Z axis.
+ * The @base of the cone is placed at Z = 0, and the top at Z = @height.
+ * The cone is subdivided around the Z axis into @slices, and along
+ * the Z axis into @stacks.
+ *
+ **/
+void
+gdk_gl_draw_cone (gboolean solid,
+ double base,
+ double height,
+ int slices,
+ int stacks)
+{
+ QUAD_OBJ_INIT();
+
+ if (solid)
+ gluQuadricDrawStyle (quadObj, GLU_FILL);
+ else
+ gluQuadricDrawStyle (quadObj, GLU_LINE);
+
+ gluQuadricNormals (quadObj, GLU_SMOOTH);
+
+ /* If we ever changed/used the texture or orientation state
+ of quadObj, we'd need to change it to the defaults here
+ with gluQuadricTexture and/or gluQuadricOrientation. */
+ gluCylinder (quadObj, base, 0.0, height, slices, stacks);
+}
+
+/*
+ * Torus
+ */
+
+static void
+doughnut(GLfloat r, GLfloat R, GLint nsides, GLint rings)
+{
+ int i, j;
+ GLfloat theta, phi, theta1;
+ GLfloat cosTheta, sinTheta;
+ GLfloat cosTheta1, sinTheta1;
+ GLfloat ringDelta, sideDelta;
+
+ ringDelta = 2.0 * G_PI / rings;
+ sideDelta = 2.0 * G_PI / nsides;
+
+ theta = 0.0;
+ cosTheta = 1.0;
+ sinTheta = 0.0;
+ for (i = rings - 1; i >= 0; i--) {
+ theta1 = theta + ringDelta;
+ cosTheta1 = cos(theta1);
+ sinTheta1 = sin(theta1);
+ glBegin(GL_QUAD_STRIP);
+ phi = 0.0;
+ for (j = nsides; j >= 0; j--) {
+ GLfloat cosPhi, sinPhi, dist;
+
+ phi += sideDelta;
+ cosPhi = cos(phi);
+ sinPhi = sin(phi);
+ dist = R + r * cosPhi;
+
+ glNormal3f(cosTheta1 * cosPhi, -sinTheta1 * cosPhi, sinPhi);
+ glVertex3f(cosTheta1 * dist, -sinTheta1 * dist, r * sinPhi);
+ glNormal3f(cosTheta * cosPhi, -sinTheta * cosPhi, sinPhi);
+ glVertex3f(cosTheta * dist, -sinTheta * dist, r * sinPhi);
+ }
+ glEnd();
+ theta = theta1;
+ cosTheta = cosTheta1;
+ sinTheta = sinTheta1;
+ }
+}
+
+/**
+ * gdk_gl_draw_torus:
+ * @solid: TRUE if the torus should be solid.
+ * @inner_radius: inner radius of the torus.
+ * @outer_radius: outer radius of the torus.
+ * @nsides: number of sides for each radial section.
+ * @rings: number of radial divisions for the torus.
+ *
+ * Renders a torus (doughnut) centered at the modeling coordinates
+ * origin whose axis is aligned with the Z axis.
+ *
+ **/
+void
+gdk_gl_draw_torus (gboolean solid,
+ double inner_radius,
+ double outer_radius,
+ int nsides,
+ int rings)
+{
+ if (solid)
+ {
+ doughnut (inner_radius, outer_radius, nsides, rings);
+ }
+ else
+ {
+ glPushAttrib (GL_POLYGON_BIT);
+ glPolygonMode (GL_FRONT_AND_BACK, GL_LINE);
+ doughnut (inner_radius, outer_radius, nsides, rings);
+ glPopAttrib ();
+ }
+}
+
+#define DIFF3(_a,_b,_c) { \
+ (_c)[0] = (_a)[0] - (_b)[0]; \
+ (_c)[1] = (_a)[1] - (_b)[1]; \
+ (_c)[2] = (_a)[2] - (_b)[2]; \
+}
+
+static void
+crossprod(GLfloat v1[3], GLfloat v2[3], GLfloat prod[3])
+{
+ GLfloat p[3]; /* in case prod == v1 or v2 */
+
+ p[0] = v1[1] * v2[2] - v2[1] * v1[2];
+ p[1] = v1[2] * v2[0] - v2[2] * v1[0];
+ p[2] = v1[0] * v2[1] - v2[0] * v1[1];
+ prod[0] = p[0];
+ prod[1] = p[1];
+ prod[2] = p[2];
+}
+
+static void
+normalize(GLfloat v[3])
+{
+ GLfloat d;
+
+ d = sqrt(v[0] * v[0] + v[1] * v[1] + v[2] * v[2]);
+ if (d == 0.0) {
+ g_warning("normalize: zero length vector");
+ v[0] = d = 1.0;
+ }
+ d = 1 / d;
+ v[0] *= d;
+ v[1] *= d;
+ v[2] *= d;
+}
+
+static void
+recorditem(GLfloat * n1, GLfloat * n2, GLfloat * n3,
+ GLenum shadeType)
+{
+ GLfloat q0[3], q1[3];
+
+ DIFF3(n1, n2, q0);
+ DIFF3(n2, n3, q1);
+ crossprod(q0, q1, q1);
+ normalize(q1);
+
+ glBegin(shadeType);
+ glNormal3fv(q1);
+ glVertex3fv(n1);
+ glVertex3fv(n2);
+ glVertex3fv(n3);
+ glEnd();
+}
+
+static void
+subdivide(GLfloat * v0, GLfloat * v1, GLfloat * v2,
+ GLenum shadeType)
+{
+ int depth;
+ GLfloat w0[3], w1[3], w2[3];
+ GLfloat l;
+ int i, j, k, n;
+
+ depth = 1;
+ for (i = 0; i < depth; i++) {
+ for (j = 0; i + j < depth; j++) {
+ k = depth - i - j;
+ for (n = 0; n < 3; n++) {
+ w0[n] = (i * v0[n] + j * v1[n] + k * v2[n]) / depth;
+ w1[n] = ((i + 1) * v0[n] + j * v1[n] + (k - 1) * v2[n])
+ / depth;
+ w2[n] = (i * v0[n] + (j + 1) * v1[n] + (k - 1) * v2[n])
+ / depth;
+ }
+ l = sqrt(w0[0] * w0[0] + w0[1] * w0[1] + w0[2] * w0[2]);
+ w0[0] /= l;
+ w0[1] /= l;
+ w0[2] /= l;
+ l = sqrt(w1[0] * w1[0] + w1[1] * w1[1] + w1[2] * w1[2]);
+ w1[0] /= l;
+ w1[1] /= l;
+ w1[2] /= l;
+ l = sqrt(w2[0] * w2[0] + w2[1] * w2[1] + w2[2] * w2[2]);
+ w2[0] /= l;
+ w2[1] /= l;
+ w2[2] /= l;
+ recorditem(w1, w0, w2, shadeType);
+ }
+ }
+}
+
+static void
+drawtriangle(int i, GLfloat data[][3], int ndx[][3],
+ GLenum shadeType)
+{
+ GLfloat *x0, *x1, *x2;
+
+ x0 = data[ndx[i][0]];
+ x1 = data[ndx[i][1]];
+ x2 = data[ndx[i][2]];
+ subdivide(x0, x1, x2, shadeType);
+}
+
+/*
+ * Tetrahedron
+ */
+
+/* tetrahedron data: */
+
+#define T 1.73205080756887729
+
+static GLfloat tdata[4][3] =
+{
+ {T, T, T},
+ {T, -T, -T},
+ {-T, T, -T},
+ {-T, -T, T}
+};
+
+static int tndex[4][3] =
+{
+ {0, 1, 3},
+ {2, 1, 0},
+ {3, 2, 0},
+ {1, 2, 3}
+};
+
+static void
+tetrahedron(GLenum shadeType)
+{
+ int i;
+
+ for (i = 3; i >= 0; i--)
+ drawtriangle(i, tdata, tndex, shadeType);
+}
+
+/**
+ * gdk_gl_draw_tetrahedron:
+ * @solid: TRUE if the tetrahedron should be solid.
+ *
+ * Renders a tetrahedron centered at the modeling coordinates
+ * origin with a radius of the square root of 3.
+ *
+ **/
+void
+gdk_gl_draw_tetrahedron (gboolean solid)
+{
+ if (solid)
+ tetrahedron (GL_TRIANGLES);
+ else
+ tetrahedron (GL_LINE_LOOP);
+}
+
+/*
+ * Octahedron
+ */
+
+/* octahedron data: The octahedron produced is centered at the
+ origin and has radius 1.0 */
+static GLfloat odata[6][3] =
+{
+ {1.0, 0.0, 0.0},
+ {-1.0, 0.0, 0.0},
+ {0.0, 1.0, 0.0},
+ {0.0, -1.0, 0.0},
+ {0.0, 0.0, 1.0},
+ {0.0, 0.0, -1.0}
+};
+
+static int ondex[8][3] =
+{
+ {0, 4, 2},
+ {1, 2, 4},
+ {0, 3, 4},
+ {1, 4, 3},
+ {0, 2, 5},
+ {1, 5, 2},
+ {0, 5, 3},
+ {1, 3, 5}
+};
+
+static void
+octahedron(GLenum shadeType)
+{
+ int i;
+
+ for (i = 7; i >= 0; i--) {
+ drawtriangle(i, odata, ondex, shadeType);
+ }
+}
+
+/**
+ * gdk_gl_draw_octahedron:
+ * @solid: TRUE if the octahedron should be solid.
+ *
+ * Renders a octahedron centered at the modeling coordinates
+ * origin with a radius of 1.0.
+ *
+ **/
+void
+gdk_gl_draw_octahedron (gboolean solid)
+{
+ if (solid)
+ octahedron (GL_TRIANGLES);
+ else
+ octahedron (GL_LINE_LOOP);
+}
+
+/*
+ * Icosahedron
+ */
+
+/* icosahedron data: These numbers are rigged to make an
+ icosahedron of radius 1.0 */
+
+#define X .525731112119133606
+#define Z .850650808352039932
+
+static GLfloat idata[12][3] =
+{
+ {-X, 0, Z},
+ {X, 0, Z},
+ {-X, 0, -Z},
+ {X, 0, -Z},
+ {0, Z, X},
+ {0, Z, -X},
+ {0, -Z, X},
+ {0, -Z, -X},
+ {Z, X, 0},
+ {-Z, X, 0},
+ {Z, -X, 0},
+ {-Z, -X, 0}
+};
+
+static int index[20][3] =
+{
+ {0, 4, 1},
+ {0, 9, 4},
+ {9, 5, 4},
+ {4, 5, 8},
+ {4, 8, 1},
+ {8, 10, 1},
+ {8, 3, 10},
+ {5, 3, 8},
+ {5, 2, 3},
+ {2, 7, 3},
+ {7, 10, 3},
+ {7, 6, 10},
+ {7, 11, 6},
+ {11, 0, 6},
+ {0, 1, 6},
+ {6, 1, 10},
+ {9, 0, 11},
+ {9, 11, 2},
+ {9, 2, 5},
+ {7, 2, 11},
+};
+
+static void
+icosahedron(GLenum shadeType)
+{
+ int i;
+
+ for (i = 19; i >= 0; i--) {
+ drawtriangle(i, idata, index, shadeType);
+ }
+}
+
+/**
+ * gdk_gl_draw_icosahedron:
+ * @solid: TRUE if the icosahedron should be solid.
+ *
+ * Renders a icosahedron.
+ * The icosahedron is centered at the modeling coordinates origin
+ * and has a radius of 1.0.
+ *
+ **/
+void
+gdk_gl_draw_icosahedron (gboolean solid)
+{
+ if (solid)
+ icosahedron (GL_TRIANGLES);
+ else
+ icosahedron (GL_LINE_LOOP);
+}
+
+/*
+ * Dodecahedron
+ */
+
+static GLfloat dodec[20][3];
+
+static void
+initDodecahedron(void)
+{
+ GLfloat alpha, beta;
+
+ alpha = sqrt(2.0 / (3.0 + sqrt(5.0)));
+ beta = 1.0 + sqrt(6.0 / (3.0 + sqrt(5.0)) -
+ 2.0 + 2.0 * sqrt(2.0 / (3.0 + sqrt(5.0))));
+ /* *INDENT-OFF* */
+ dodec[0][0] = -alpha; dodec[0][1] = 0; dodec[0][2] = beta;
+ dodec[1][0] = alpha; dodec[1][1] = 0; dodec[1][2] = beta;
+ dodec[2][0] = -1; dodec[2][1] = -1; dodec[2][2] = -1;
+ dodec[3][0] = -1; dodec[3][1] = -1; dodec[3][2] = 1;
+ dodec[4][0] = -1; dodec[4][1] = 1; dodec[4][2] = -1;
+ dodec[5][0] = -1; dodec[5][1] = 1; dodec[5][2] = 1;
+ dodec[6][0] = 1; dodec[6][1] = -1; dodec[6][2] = -1;
+ dodec[7][0] = 1; dodec[7][1] = -1; dodec[7][2] = 1;
+ dodec[8][0] = 1; dodec[8][1] = 1; dodec[8][2] = -1;
+ dodec[9][0] = 1; dodec[9][1] = 1; dodec[9][2] = 1;
+ dodec[10][0] = beta; dodec[10][1] = alpha; dodec[10][2] = 0;
+ dodec[11][0] = beta; dodec[11][1] = -alpha; dodec[11][2] = 0;
+ dodec[12][0] = -beta; dodec[12][1] = alpha; dodec[12][2] = 0;
+ dodec[13][0] = -beta; dodec[13][1] = -alpha; dodec[13][2] = 0;
+ dodec[14][0] = -alpha; dodec[14][1] = 0; dodec[14][2] = -beta;
+ dodec[15][0] = alpha; dodec[15][1] = 0; dodec[15][2] = -beta;
+ dodec[16][0] = 0; dodec[16][1] = beta; dodec[16][2] = alpha;
+ dodec[17][0] = 0; dodec[17][1] = beta; dodec[17][2] = -alpha;
+ dodec[18][0] = 0; dodec[18][1] = -beta; dodec[18][2] = alpha;
+ dodec[19][0] = 0; dodec[19][1] = -beta; dodec[19][2] = -alpha;
+ /* *INDENT-ON* */
+
+}
+
+static void
+pentagon(int a, int b, int c, int d, int e, GLenum shadeType)
+{
+ GLfloat n0[3], d1[3], d2[3];
+
+ DIFF3(dodec[a], dodec[b], d1);
+ DIFF3(dodec[b], dodec[c], d2);
+ crossprod(d1, d2, n0);
+ normalize(n0);
+
+ glBegin(shadeType);
+ glNormal3fv(n0);
+ glVertex3fv(&dodec[a][0]);
+ glVertex3fv(&dodec[b][0]);
+ glVertex3fv(&dodec[c][0]);
+ glVertex3fv(&dodec[d][0]);
+ glVertex3fv(&dodec[e][0]);
+ glEnd();
+}
+
+static void
+dodecahedron(GLenum type)
+{
+ static int inited = 0;
+
+ if (inited == 0) {
+ inited = 1;
+ initDodecahedron();
+ }
+ pentagon(0, 1, 9, 16, 5, type);
+ pentagon(1, 0, 3, 18, 7, type);
+ pentagon(1, 7, 11, 10, 9, type);
+ pentagon(11, 7, 18, 19, 6, type);
+ pentagon(8, 17, 16, 9, 10, type);
+ pentagon(2, 14, 15, 6, 19, type);
+ pentagon(2, 13, 12, 4, 14, type);
+ pentagon(2, 19, 18, 3, 13, type);
+ pentagon(3, 0, 5, 12, 13, type);
+ pentagon(6, 15, 8, 10, 11, type);
+ pentagon(4, 17, 8, 15, 14, type);
+ pentagon(4, 12, 5, 16, 17, type);
+}
+
+/**
+ * gdk_gl_draw_dodecahedron:
+ * @solid: TRUE if the dodecahedron should be solid.
+ *
+ * Renders a dodecahedron centered at the modeling coordinates
+ * origin with a radius of the square root of 3.
+ *
+ **/
+void
+gdk_gl_draw_dodecahedron (gboolean solid)
+{
+ if (solid)
+ dodecahedron (GL_TRIANGLE_FAN);
+ else
+ dodecahedron (GL_LINE_LOOP);
+}
+
+/*
+ * Teapot
+ */
+
+/* Rim, body, lid, and bottom data must be reflected in x and
+ y; handle and spout data across the y axis only. */
+
+static int patchdata[][16] =
+{
+ /* rim */
+ {102, 103, 104, 105, 4, 5, 6, 7, 8, 9, 10, 11,
+ 12, 13, 14, 15},
+ /* body */
+ {12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23,
+ 24, 25, 26, 27},
+ {24, 25, 26, 27, 29, 30, 31, 32, 33, 34, 35, 36,
+ 37, 38, 39, 40},
+ /* lid */
+ {96, 96, 96, 96, 97, 98, 99, 100, 101, 101, 101,
+ 101, 0, 1, 2, 3,},
+ {0, 1, 2, 3, 106, 107, 108, 109, 110, 111, 112,
+ 113, 114, 115, 116, 117},
+ /* bottom */
+ {118, 118, 118, 118, 124, 122, 119, 121, 123, 126,
+ 125, 120, 40, 39, 38, 37},
+ /* handle */
+ {41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52,
+ 53, 54, 55, 56},
+ {53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64,
+ 28, 65, 66, 67},
+ /* spout */
+ {68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79,
+ 80, 81, 82, 83},
+ {80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91,
+ 92, 93, 94, 95}
+};
+/* *INDENT-OFF* */
+
+static float cpdata[][3] =
+{
+ {0.2, 0, 2.7}, {0.2, -0.112, 2.7}, {0.112, -0.2, 2.7}, {0,
+ -0.2, 2.7}, {1.3375, 0, 2.53125}, {1.3375, -0.749, 2.53125},
+ {0.749, -1.3375, 2.53125}, {0, -1.3375, 2.53125}, {1.4375,
+ 0, 2.53125}, {1.4375, -0.805, 2.53125}, {0.805, -1.4375,
+ 2.53125}, {0, -1.4375, 2.53125}, {1.5, 0, 2.4}, {1.5, -0.84,
+ 2.4}, {0.84, -1.5, 2.4}, {0, -1.5, 2.4}, {1.75, 0, 1.875},
+ {1.75, -0.98, 1.875}, {0.98, -1.75, 1.875}, {0, -1.75,
+ 1.875}, {2, 0, 1.35}, {2, -1.12, 1.35}, {1.12, -2, 1.35},
+ {0, -2, 1.35}, {2, 0, 0.9}, {2, -1.12, 0.9}, {1.12, -2,
+ 0.9}, {0, -2, 0.9}, {-2, 0, 0.9}, {2, 0, 0.45}, {2, -1.12,
+ 0.45}, {1.12, -2, 0.45}, {0, -2, 0.45}, {1.5, 0, 0.225},
+ {1.5, -0.84, 0.225}, {0.84, -1.5, 0.225}, {0, -1.5, 0.225},
+ {1.5, 0, 0.15}, {1.5, -0.84, 0.15}, {0.84, -1.5, 0.15}, {0,
+ -1.5, 0.15}, {-1.6, 0, 2.025}, {-1.6, -0.3, 2.025}, {-1.5,
+ -0.3, 2.25}, {-1.5, 0, 2.25}, {-2.3, 0, 2.025}, {-2.3, -0.3,
+ 2.025}, {-2.5, -0.3, 2.25}, {-2.5, 0, 2.25}, {-2.7, 0,
+ 2.025}, {-2.7, -0.3, 2.025}, {-3, -0.3, 2.25}, {-3, 0,
+ 2.25}, {-2.7, 0, 1.8}, {-2.7, -0.3, 1.8}, {-3, -0.3, 1.8},
+ {-3, 0, 1.8}, {-2.7, 0, 1.575}, {-2.7, -0.3, 1.575}, {-3,
+ -0.3, 1.35}, {-3, 0, 1.35}, {-2.5, 0, 1.125}, {-2.5, -0.3,
+ 1.125}, {-2.65, -0.3, 0.9375}, {-2.65, 0, 0.9375}, {-2,
+ -0.3, 0.9}, {-1.9, -0.3, 0.6}, {-1.9, 0, 0.6}, {1.7, 0,
+ 1.425}, {1.7, -0.66, 1.425}, {1.7, -0.66, 0.6}, {1.7, 0,
+ 0.6}, {2.6, 0, 1.425}, {2.6, -0.66, 1.425}, {3.1, -0.66,
+ 0.825}, {3.1, 0, 0.825}, {2.3, 0, 2.1}, {2.3, -0.25, 2.1},
+ {2.4, -0.25, 2.025}, {2.4, 0, 2.025}, {2.7, 0, 2.4}, {2.7,
+ -0.25, 2.4}, {3.3, -0.25, 2.4}, {3.3, 0, 2.4}, {2.8, 0,
+ 2.475}, {2.8, -0.25, 2.475}, {3.525, -0.25, 2.49375},
+ {3.525, 0, 2.49375}, {2.9, 0, 2.475}, {2.9, -0.15, 2.475},
+ {3.45, -0.15, 2.5125}, {3.45, 0, 2.5125}, {2.8, 0, 2.4},
+ {2.8, -0.15, 2.4}, {3.2, -0.15, 2.4}, {3.2, 0, 2.4}, {0, 0,
+ 3.15}, {0.8, 0, 3.15}, {0.8, -0.45, 3.15}, {0.45, -0.8,
+ 3.15}, {0, -0.8, 3.15}, {0, 0, 2.85}, {1.4, 0, 2.4}, {1.4,
+ -0.784, 2.4}, {0.784, -1.4, 2.4}, {0, -1.4, 2.4}, {0.4, 0,
+ 2.55}, {0.4, -0.224, 2.55}, {0.224, -0.4, 2.55}, {0, -0.4,
+ 2.55}, {1.3, 0, 2.55}, {1.3, -0.728, 2.55}, {0.728, -1.3,
+ 2.55}, {0, -1.3, 2.55}, {1.3, 0, 2.4}, {1.3, -0.728, 2.4},
+ {0.728, -1.3, 2.4}, {0, -1.3, 2.4}, {0, 0, 0}, {1.425,
+ -0.798, 0}, {1.5, 0, 0.075}, {1.425, 0, 0}, {0.798, -1.425,
+ 0}, {0, -1.5, 0.075}, {0, -1.425, 0}, {1.5, -0.84, 0.075},
+ {0.84, -1.5, 0.075}
+};
+
+static float tex[2][2][2] =
+{
+ { {0, 0},
+ {1, 0}},
+ { {0, 1},
+ {1, 1}}
+};
+
+/* *INDENT-ON* */
+
+static void
+teapot(GLint grid, GLdouble scale, GLenum type)
+{
+ float p[4][4][3], q[4][4][3], r[4][4][3], s[4][4][3];
+ long i, j, k, l;
+
+ glPushAttrib(GL_ENABLE_BIT | GL_EVAL_BIT);
+ glEnable(GL_AUTO_NORMAL);
+ glEnable(GL_NORMALIZE);
+ glEnable(GL_MAP2_VERTEX_3);
+ glEnable(GL_MAP2_TEXTURE_COORD_2);
+ glPushMatrix();
+ glRotatef(270.0, 1.0, 0.0, 0.0);
+ glScalef(0.5 * scale, 0.5 * scale, 0.5 * scale);
+ glTranslatef(0.0, 0.0, -1.5);
+ for (i = 0; i < 10; i++) {
+ for (j = 0; j < 4; j++) {
+ for (k = 0; k < 4; k++) {
+ for (l = 0; l < 3; l++) {
+ p[j][k][l] = cpdata[patchdata[i][j * 4 + k]][l];
+ q[j][k][l] = cpdata[patchdata[i][j * 4 + (3 - k)]][l];
+ if (l == 1)
+ q[j][k][l] *= -1.0;
+ if (i < 6) {
+ r[j][k][l] =
+ cpdata[patchdata[i][j * 4 + (3 - k)]][l];
+ if (l == 0)
+ r[j][k][l] *= -1.0;
+ s[j][k][l] = cpdata[patchdata[i][j * 4 + k]][l];
+ if (l == 0)
+ s[j][k][l] *= -1.0;
+ if (l == 1)
+ s[j][k][l] *= -1.0;
+ }
+ }
+ }
+ }
+ glMap2f(GL_MAP2_TEXTURE_COORD_2, 0, 1, 2, 2, 0, 1, 4, 2,
+ &tex[0][0][0]);
+ glMap2f(GL_MAP2_VERTEX_3, 0, 1, 3, 4, 0, 1, 12, 4,
+ &p[0][0][0]);
+ glMapGrid2f(grid, 0.0, 1.0, grid, 0.0, 1.0);
+ glEvalMesh2(type, 0, grid, 0, grid);
+ glMap2f(GL_MAP2_VERTEX_3, 0, 1, 3, 4, 0, 1, 12, 4,
+ &q[0][0][0]);
+ glEvalMesh2(type, 0, grid, 0, grid);
+ if (i < 6) {
+ glMap2f(GL_MAP2_VERTEX_3, 0, 1, 3, 4, 0, 1, 12, 4,
+ &r[0][0][0]);
+ glEvalMesh2(type, 0, grid, 0, grid);
+ glMap2f(GL_MAP2_VERTEX_3, 0, 1, 3, 4, 0, 1, 12, 4,
+ &s[0][0][0]);
+ glEvalMesh2(type, 0, grid, 0, grid);
+ }
+ }
+ glPopMatrix();
+ glPopAttrib();
+}
+
+/**
+ * gdk_gl_draw_teapot:
+ * @solid: TRUE if the teapot should be solid.
+ * @scale: relative size of the teapot.
+ *
+ * Renders a teapot.
+ * Both surface normals and texture coordinates for the teapot are generated.
+ * The teapot is generated with OpenGL evaluators.
+ *
+ **/
+void
+gdk_gl_draw_teapot (gboolean solid,
+ double scale)
+{
+ if (solid)
+ teapot (7, scale, GL_FILL);
+ else
+ teapot (10, scale, GL_LINE);
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-07 18:03:43 +0000