Import Mesa 6.5.1 (MesaLib, MesaDemos, MesaGLUT).

1 files changed, 195 insertions, 0 deletions

diff --git a/progs/redbook/stroke.c b/progs/redbook/stroke.c
new file mode 100644
index 00000000000..19b0391cbae
--- /dev/null
+++ b/progs/redbook/stroke.c
@@ -0,0 +1,195 @@
+
+/* Copyright (c) Mark J. Kilgard, 1994. */
+
+/*
+ * (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+ * Unpublished-- rights reserved under the copyright laws of the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.
+ */
+/*
+ *  stroke.c
+ *  This program demonstrates some characters of a
+ *  stroke (vector) font.  The characters are represented
+ *  by display lists, which are given numbers which
+ *  correspond to the ASCII values of the characters.
+ *  Use of glCallLists() is demonstrated.
+ */
+#include <stdlib.h>
+#include <string.h>
+#include <GL/glut.h>
+
+#define PT 1
+#define STROKE 2
+#define END 3
+
+typedef struct charpoint {
+    GLfloat   x, y;
+    int    type;
+} CP;
+
+CP Adata[] = {
+    { 0, 0, PT}, {0, 9, PT}, {1, 10, PT}, {4, 10, PT},
+    {5, 9, PT}, {5, 0, STROKE}, {0, 5, PT}, {5, 5, END}
+};
+
+CP Edata[] = {
+    {5, 0, PT}, {0, 0, PT}, {0, 10, PT}, {5, 10, STROKE},
+    {0, 5, PT}, {4, 5, END}
+};
+
+CP Pdata[] = {
+    {0, 0, PT}, {0, 10, PT},  {4, 10, PT}, {5, 9, PT}, {5, 6, PT},
+    {4, 5, PT}, {0, 5, END}
+};
+
+CP Rdata[] = {
+    {0, 0, PT}, {0, 10, PT},  {4, 10, PT}, {5, 9, PT}, {5, 6, PT},
+    {4, 5, PT}, {0, 5, STROKE}, {3, 5, PT}, {5, 0, END}
+};
+
+CP Sdata[] = {
+    {0, 1, PT}, {1, 0, PT}, {4, 0, PT}, {5, 1, PT}, {5, 4, PT},
+    {4, 5, PT}, {1, 5, PT}, {0, 6, PT}, {0, 9, PT}, {1, 10, PT},
+    {4, 10, PT}, {5, 9, END}
+};
+
+/*  drawLetter() interprets the instructions from the array
+ *  for that letter and renders the letter with line segments.
+ */
+void drawLetter(CP *l)
+{
+    glBegin(GL_LINE_STRIP);
+    for (;;) {
+	switch (l->type) {
+	    case PT:
+		glVertex2fv(&l->x);
+		break;
+	    case STROKE:
+		glVertex2fv(&l->x);
+		glEnd();
+		glBegin(GL_LINE_STRIP);
+		break;
+	    case END:
+		glVertex2fv(&l->x);
+		glEnd();
+		glTranslatef(8.0, 0.0, 0.0);
+		return;
+	}
+	l++;
+    }
+}
+
+/*  Create a display list for each of 6 characters	*/
+void myinit (void)
+{
+    GLuint base;
+
+    glShadeModel (GL_FLAT);
+
+    base = glGenLists (128);
+    glListBase(base);
+    glNewList(base+'A', GL_COMPILE); drawLetter(Adata); glEndList();
+    glNewList(base+'E', GL_COMPILE); drawLetter(Edata); glEndList();
+    glNewList(base+'P', GL_COMPILE); drawLetter(Pdata); glEndList();
+    glNewList(base+'R', GL_COMPILE); drawLetter(Rdata); glEndList();
+    glNewList(base+'S', GL_COMPILE); drawLetter(Sdata); glEndList();
+    glNewList(base+' ', GL_COMPILE); glTranslatef(8.0, 0.0, 0.0); glEndList();
+}
+
+char *test1 = "A SPARE SERAPE APPEARS AS";
+char *test2 = "APES PREPARE RARE PEPPERS";
+
+void printStrokedString(char *s)
+{
+    GLsizei len = (GLsizei) strlen(s);
+    glCallLists(len, GL_BYTE, (GLbyte *)s);
+}
+
+void display(void)
+{
+    glClear(GL_COLOR_BUFFER_BIT);
+    glColor3f(1.0, 1.0, 1.0);
+    glPushMatrix();
+    glScalef(2.0, 2.0, 2.0);
+    glTranslatef(10.0, 30.0, 0.0);
+    printStrokedString(test1);
+    glPopMatrix();
+    glPushMatrix();
+    glScalef(2.0, 2.0, 2.0);
+    glTranslatef(10.0, 13.0, 0.0);
+    printStrokedString(test2);
+    glPopMatrix();
+    glFlush();
+}
+
+static void reshape(GLsizei w, GLsizei h)
+{
+    glViewport(0, 0, w, h);
+    glMatrixMode(GL_PROJECTION);
+    glLoadIdentity();
+    glOrtho(0.0, (GLdouble)w, 0.0, (GLdouble)h, -1.0, 1.0);
+    glMatrixMode(GL_MODELVIEW);
+    glLoadIdentity();
+}
+
+static void
+key(unsigned char k, int x, int y)
+{
+  switch (k) {
+  case 27:  /* Escape */
+    exit(0);
+    break;
+  default:
+    return;
+  }
+  glutPostRedisplay();
+}
+
+/*  Main Loop
+ *  Open window with initial window size, title bar,
+ *  RGBA display mode, and handle input events.
+ */
+int main(int argc, char** argv)
+{
+    glutInit(&argc, argv);
+    glutInitDisplayMode (GLUT_SINGLE | GLUT_RGB);
+    glutInitWindowSize (440, 120);
+    glutCreateWindow (argv[0]);
+    myinit ();
+    glutDisplayFunc(display);
+    glutReshapeFunc(reshape);
+    glutKeyboardFunc(key);
+    glutMainLoop();
+    return 0;             /* ANSI C requires main to return int. */
+}