Initial revision

progs/samples/font.c

@@ -0,0 +1,273 @@
+/*
+ * Copyright (c) 1991, 1992, 1993 Silicon Graphics, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that (i) the above copyright notices and this permission notice appear in
+ * all copies of the software and related documentation, and (ii) the name of
+ * Silicon Graphics may not be used in any advertising or
+ * publicity relating to the software without the specific, prior written
+ * permission of Silicon Graphics.
+ *
+ * THE SOFTWARE IS PROVIDED "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 BE LIABLE FOR
+ * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
+ * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+ * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
+ * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <GL/glut.h>
+
+
+#define OPENGL_WIDTH 24
+#define OPENGL_HEIGHT 13
+
+
+char string[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz";
+GLenum rgb, doubleBuffer, windType;
+float angleX = 0.0, angleY = 0.0, angleZ = 0.0;
+float scaleX = 1.0, scaleY = 1.0, scaleZ = 1.0;
+float shiftX = 0.0, shiftY = 0.0, shiftZ = 0.0;
+
+
+#include "tkmap.c"
+
+
+static void DrawBitmapString(void *font, const char *string)
+{
+    int i;
+
+    for (i = 0; string[i]; i++)
+	glutBitmapCharacter(font, string[i]);
+}
+
+static void DrawStrokeString(void *font, const char *string)
+{
+    int i;
+
+    for (i = 0; string[i]; i++)
+	glutStrokeCharacter(font, string[i]);
+}
+
+static void Init(void)
+{
+
+    glClearColor(0.0, 0.0, 0.0, 0.0);
+    glClearIndex(0.0);
+}
+
+static void Reshape(int width, int height)
+{
+
+    glViewport(0, 0, (GLint)width, (GLint)height);
+
+    glMatrixMode(GL_PROJECTION);
+    glLoadIdentity();
+    glOrtho(-400.0, 400.0, -200.0, 200.0, -400.0, 400.0);
+    glMatrixMode(GL_MODELVIEW);
+}
+
+static void Key2(int key, int x, int y)
+{
+
+    switch (key) {
+      case GLUT_KEY_LEFT:
+	shiftX -= 20.0;
+	break;
+      case GLUT_KEY_RIGHT:
+	shiftX += 20.0;
+	break;
+      case GLUT_KEY_UP:
+	shiftY += 20.0;
+	break;
+      case GLUT_KEY_DOWN:
+	shiftY -= 20.0;
+	break;
+      default:
+	return;
+    }
+
+    glutPostRedisplay();
+}
+
+static void Key(unsigned char key, int x, int y)
+{
+
+    switch (key) {
+      case 27:
+        exit(1);
+
+      case 'n':
+	shiftZ += 20.0;
+	break;
+      case 'm':
+	shiftZ -= 20.0;
+	break;
+
+      case 'q':
+	scaleX -= 0.1;
+	if (scaleX < 0.1) {
+	    scaleX = 0.1;
+	}
+	break;
+      case 'w':
+	scaleX += 0.1;
+	break;
+      case 'a':
+	scaleY -= 0.1;
+	if (scaleY < 0.1) {
+	    scaleY = 0.1;
+	}
+	break;
+      case 's':
+	scaleY += 0.1;
+	break;
+      case 'z':
+	scaleZ -= 0.1;
+	if (scaleZ < 0.1) {
+	    scaleZ = 0.1;
+	}
+	break;
+      case 'x':
+	scaleZ += 0.1;
+	break;
+
+      case 'e':
+	angleX -= 5.0;
+	if (angleX < 0.0) {
+	    angleX = 360.0 + angleX;
+	}
+	break;
+      case 'r':
+	angleX += 5.0;
+	if (angleX > 360.0) {
+	    angleX = angleX - 360.0;
+	}
+	break;
+      case 'd':
+	angleY -= 5.0;
+	if (angleY < 0.0) {
+	    angleY = 360.0 + angleY;
+	}
+	break;
+      case 'f':
+	angleY += 5.0;
+	if (angleY > 360.0) {
+	    angleY = angleY - 360.0;
+	}
+	break;
+      case 'c':
+	angleZ -= 5.0;
+	if (angleZ < 0.0) {
+	    angleZ = 360.0 + angleZ;
+	}
+	break;
+      case 'v':
+	angleZ += 5.0;
+	if (angleZ > 360.0) {
+	    angleZ = angleZ - 360.0;
+	}
+	break;
+      default:
+	return;
+    }
+
+    glutPostRedisplay();
+}
+
+static void Draw(void)
+{
+
+    glClear(GL_COLOR_BUFFER_BIT);
+
+    SetColor(COLOR_WHITE);
+
+    glPushMatrix();
+
+    glTranslatef(shiftX, shiftY, shiftZ);
+    glRotatef(angleX, 1.0, 0.0, 0.0);
+    glRotatef(angleY, 0.0, 1.0, 0.0);
+    glRotatef(angleZ, 0.0, 0.0, 1.0);
+    glScalef(scaleX, scaleY, scaleZ);
+
+    glPushMatrix();
+    glRasterPos2f(-390.5, 0.5);
+    DrawBitmapString(GLUT_BITMAP_9_BY_15, string);
+    glPopMatrix();
+
+    glPushMatrix();
+    glTranslatef(-390.5, -30.5, 0.0);
+    DrawStrokeString(GLUT_STROKE_ROMAN, string);
+    glPopMatrix();
+
+    glPopMatrix();
+
+    glFlush();
+
+    if (doubleBuffer) {
+	glutSwapBuffers();
+    }
+}
+
+static GLenum Args(int argc, char **argv)
+{
+    GLint i;
+
+    rgb = GL_TRUE;
+    doubleBuffer = GL_FALSE;
+
+    for (i = 1; i < argc; i++) {
+	if (strcmp(argv[i], "-ci") == 0) {
+	    rgb = GL_FALSE;
+	} else if (strcmp(argv[i], "-rgb") == 0) {
+	    rgb = GL_TRUE;
+	} else if (strcmp(argv[i], "-sb") == 0) {
+	    doubleBuffer = GL_FALSE;
+	} else if (strcmp(argv[i], "-db") == 0) {
+	    doubleBuffer = GL_TRUE;
+	} else {
+	    printf("%s (Bad option).\n", argv[i]);
+	    return GL_FALSE;
+	}
+    }
+    return GL_TRUE;
+}
+
+int main(int argc, char **argv)
+{
+    glutInit(&argc, argv);
+
+    if (Args(argc, argv) == GL_FALSE) {
+	exit(1);
+    }
+
+    glutInitWindowPosition(0, 0); glutInitWindowSize( 800, 400);
+
+    windType = (rgb) ? GLUT_RGB : GLUT_INDEX;
+    windType |= (doubleBuffer) ? GLUT_DOUBLE : GLUT_SINGLE;
+    glutInitDisplayMode(windType);
+
+    if (glutCreateWindow("Font Test") == GL_FALSE) {
+	exit(1);
+    }
+
+    InitMap();
+
+    Init();
+
+    glutReshapeFunc(Reshape);
+    glutKeyboardFunc(Key);
+    glutSpecialFunc(Key2);
+    glutDisplayFunc(Draw);
+    glutMainLoop();
+	return 0;
+}