1 /*
2 * Copyright (c) 2024, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25 package wrap.glwrap;
26
27 import java.io.IOException;
28 import java.lang.foreign.Arena;
29 import java.lang.foreign.MemorySegment;
30
31 import static opengl.opengl_h.*;
32
33 public class Fonts {
34 static class FontsWindow extends GLWindow {
35 public FontsWindow( Arena arena, int width, int height, String name, int mode, GLTexture... textures) {
36 super( arena, width, height, name, mode, textures);
37 }
38
39 @Override
40 public void reshape(int w, int h) {
41 width = w;
42 height = h;
43 System.out.println("reshaped " + w + ", " + h);
44 double size;
45 double aspect;
46 glViewport(0, 0, w, h);
47 glMatrixMode(GL_PROJECTION());
48 glLoadIdentity();
49 size = (double) ((w >= h) ? w : h) / 2.0;
50 if (w <= h) {
51 aspect = (double) h / (double) w;
52 glOrtho(-size, size, -size * aspect, size * aspect, -100000.0, 100000.0);
53 } else {
54 aspect = (double) w / (double) h;
55 glOrtho(-size * aspect, size * aspect, -size, size, -100000.0, 100000.0);
56 }
57 glScaled(aspect, aspect, 1.0);
58 glMatrixMode(GL_MODELVIEW());
59 }
60
61 @Override
62 public void display() {
63 glClearColor(0f, 0f, 0f, 0f);
64 glPushMatrix1(() -> {
65 float x = -225.0f;
66 float y = 70.0f;
67 float ystep = 10.0f;
68 boolean stroke = true;
69 if (stroke) {
70 float stroke_scale = 0.2f;
71 glTranslatef(x, y, 0.0f);
72 MemorySegment font = glutStrokeRoman$segment();
73 for (int j = 0; j < 4; j++) {
74 glPushMatrix1(() -> {
75 glScalef(stroke_scale, stroke_scale, stroke_scale);
76 for (int c : "This text stroked".getBytes()) {
77 glutStrokeCharacter(font, c);
78 }
79 });
80 glTranslatef(0f, -ystep * 10 + j, 0.0f);
81 }
82 } else {
83 glColor3f(0.0f, 1.0f, 0.0f);
84 var font = glutBitmapTimesRoman24$segment();
85 for (int j = 0; j < 4; j++) {
86 glRasterPos2f(10f, 10f + ystep * j * 10);
87 for (int c : "This text ".getBytes()) {
88 glutBitmapCharacter(font, c);
89 }
90 }
91 }
92 });
93 glutSwapBuffers();
94 }
95
96
97 @Override
98 public void onIdle() {
99 super.onIdle();
100 }
101 }
102 public static void main(String[] args) throws IOException {
103
104 try (var arena = Arena.ofConfined()) {
105 // var particleTexture = new GLTexture(arena, Fonts.class.getResourceAsStream("/particle.png"));
106
107 new FontsWindow( arena, 1000, 1000, "Fonts", GLUT_RGB() | GLUT_DOUBLE() /*particleTexture particleTexture */).bindEvents().mainLoop();
108 }
109 }
110 }
111