Added DirectFB GLUT implementation.

1 files changed, 599 insertions, 0 deletions

diff --git a/src/glut/directfb/models.c b/src/glut/directfb/models.c
new file mode 100644
index 0000000..d96a8f5
--- /dev/null
+++ b/src/glut/directfb/models.c
@@ -0,0 +1,599 @@
+
+/* 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  Unpublished-- rights reserved under the copyright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.
+*/
+
+#include <math.h>
+#include <GL/gl.h>
+#include <GL/glu.h>
+
+#include "internal.h"
+
+/* Some <math.h> files do not define M_PI... */
+#ifndef M_PI
+#define M_PI 3.14159265358979323846
+#endif
+
+static GLUquadricObj *quadObj;
+
+#define QUAD_OBJ_INIT() { if(!quadObj) initQuadObj(); }
+
+static void
+initQuadObj(void)
+{
+  quadObj = gluNewQuadric();
+  if (!quadObj)
+    __glutFatalError("out of memory");
+}
+
+/* CENTRY */
+void GLUTAPIENTRY
+glutWireSphere(GLdouble radius, GLint slices, GLint stacks)
+{
+  QUAD_OBJ_INIT();
+  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);
+}
+
+void GLUTAPIENTRY
+glutSolidSphere(GLdouble radius, GLint slices, GLint stacks)
+{
+  QUAD_OBJ_INIT();
+  gluQuadricDrawStyle(quadObj, GLU_FILL);
+  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);
+}
+
+void GLUTAPIENTRY
+glutWireCone(GLdouble base, GLdouble height,
+  GLint slices, GLint stacks)
+{
+  QUAD_OBJ_INIT();
+  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);
+}
+
+void GLUTAPIENTRY
+glutSolidCone(GLdouble base, GLdouble height,
+  GLint slices, GLint stacks)
+{
+  QUAD_OBJ_INIT();
+  gluQuadricDrawStyle(quadObj, GLU_FILL);
+  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);
+}
+
+/* ENDCENTRY */
+
+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();
+  }
+}
+
+/* CENTRY */
+void GLUTAPIENTRY
+glutWireCube(GLdouble size)
+{
+  drawBox(size, GL_LINE_LOOP);
+}
+
+void GLUTAPIENTRY
+glutSolidCube(GLdouble size)
+{
+  drawBox(size, GL_QUADS);
+}
+
+/* ENDCENTRY */
+
+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 * M_PI / rings;
+  sideDelta = 2.0 * M_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;
+  }
+}
+
+/* CENTRY */
+void GLUTAPIENTRY
+glutWireTorus(GLdouble innerRadius, GLdouble outerRadius,
+  GLint nsides, GLint rings)
+{
+/*   glPushAttrib(GL_POLYGON_BIT); */
+/*   glPolygonMode(GL_FRONT_AND_BACK, GL_LINE); */
+  doughnut(innerRadius, outerRadius, nsides, rings);
+/*   glPopAttrib(); */
+}
+
+void GLUTAPIENTRY
+glutSolidTorus(GLdouble innerRadius, GLdouble outerRadius,
+  GLint nsides, GLint rings)
+{
+  doughnut(innerRadius, outerRadius, nsides, rings);
+}
+
+/* ENDCENTRY */
+
+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* */
+
+}
+
+#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) {
+/*    __glutWarning("normalize: zero length vector"); */
+    v[0] = d = 1.0;
+  }
+  d = 1 / d;
+  v[0] *= d;
+  v[1] *= d;
+  v[2] *= d;
+}
+
+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);
+}
+
+/* CENTRY */
+void GLUTAPIENTRY
+glutWireDodecahedron(void)
+{
+  dodecahedron(GL_LINE_LOOP);
+}
+
+void GLUTAPIENTRY
+glutSolidDodecahedron(void)
+{
+  dodecahedron(GL_TRIANGLE_FAN);
+}
+
+/* ENDCENTRY */
+
+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);
+}
+
+/* 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);
+  }
+}
+
+/* CENTRY */
+void GLUTAPIENTRY
+glutWireOctahedron(void)
+{
+  octahedron(GL_LINE_LOOP);
+}
+
+void GLUTAPIENTRY
+glutSolidOctahedron(void)
+{
+  octahedron(GL_TRIANGLES);
+}
+
+/* ENDCENTRY */
+
+/* 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);
+  }
+}
+
+/* CENTRY */
+void GLUTAPIENTRY
+glutWireIcosahedron(void)
+{
+  icosahedron(GL_LINE_LOOP);
+}
+
+void GLUTAPIENTRY
+glutSolidIcosahedron(void)
+{
+  icosahedron(GL_TRIANGLES);
+}
+
+/* ENDCENTRY */
+
+/* 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);
+}
+
+/* CENTRY */
+void GLUTAPIENTRY
+glutWireTetrahedron(void)
+{
+  tetrahedron(GL_LINE_LOOP);
+}
+
+void GLUTAPIENTRY
+glutSolidTetrahedron(void)
+{
+  tetrahedron(GL_TRIANGLES);
+}
+
+/* ENDCENTRY */