Gears test added
This commit is contained in:
Brian Matzon
parent
78c086a01c
commit
29e4fe179b
|
|
@ -0,0 +1,307 @@
|
|||
/*
|
||||
* 3-D gear wheels. This program is in the public domain.
|
||||
* Brian Paul
|
||||
*/
|
||||
package org.lwjgl.test.opengl;
|
||||
|
||||
import java.nio.FloatBuffer;
|
||||
|
||||
import org.lwjgl.BufferUtils;
|
||||
import org.lwjgl.LWJGLException;
|
||||
import org.lwjgl.input.Keyboard;
|
||||
import org.lwjgl.opengl.ARBTransposeMatrix;
|
||||
import org.lwjgl.opengl.Display;
|
||||
import org.lwjgl.opengl.DisplayMode;
|
||||
import org.lwjgl.opengl.GL11;
|
||||
import org.lwjgl.opengl.GLContext;
|
||||
|
||||
/**
|
||||
* $Id$
|
||||
* <p>
|
||||
* This is the OpenGL "standard" Gears demo, originally by Brian Paul
|
||||
* </p>
|
||||
* @author Brian Matzon <brian@matzon.dk>
|
||||
* @version $Revision$
|
||||
*/
|
||||
public class Gears {
|
||||
|
||||
private float view_rotx = 20.0f;
|
||||
|
||||
private float view_roty = 30.0f;
|
||||
|
||||
private float view_rotz = 0.0f;
|
||||
|
||||
private int gear1;
|
||||
|
||||
private int gear2;
|
||||
|
||||
private int gear3;
|
||||
|
||||
private float angle = 0.0f;
|
||||
|
||||
public static void main(String[] args) {
|
||||
new Gears().execute();
|
||||
}
|
||||
|
||||
/**
|
||||
*
|
||||
*/
|
||||
private void execute() {
|
||||
try {
|
||||
init();
|
||||
} catch (LWJGLException le) {
|
||||
le.printStackTrace();
|
||||
System.out.println("Failed to initialize Gears.");
|
||||
return;
|
||||
}
|
||||
|
||||
loop();
|
||||
|
||||
destroy();
|
||||
}
|
||||
|
||||
/**
|
||||
*
|
||||
*/
|
||||
private void destroy() {
|
||||
Display.destroy();
|
||||
}
|
||||
|
||||
/**
|
||||
*
|
||||
*/
|
||||
private void loop() {
|
||||
long startTime = System.currentTimeMillis() + 5000;
|
||||
long fps = 0;
|
||||
|
||||
while (!Display.isCloseRequested()) {
|
||||
angle += 2.0f;
|
||||
|
||||
GL11.glClear(GL11.GL_COLOR_BUFFER_BIT | GL11.GL_DEPTH_BUFFER_BIT);
|
||||
|
||||
GL11.glPushMatrix();
|
||||
GL11.glRotatef(view_rotx, 1.0f, 0.0f, 0.0f);
|
||||
GL11.glRotatef(view_roty, 0.0f, 1.0f, 0.0f);
|
||||
GL11.glRotatef(view_rotz, 0.0f, 0.0f, 1.0f);
|
||||
|
||||
GL11.glPushMatrix();
|
||||
GL11.glTranslatef(-3.0f, -2.0f, 0.0f);
|
||||
GL11.glRotatef(angle, 0.0f, 0.0f, 1.0f);
|
||||
GL11.glCallList(gear1);
|
||||
GL11.glPopMatrix();
|
||||
|
||||
GL11.glPushMatrix();
|
||||
GL11.glTranslatef(3.1f, -2.0f, 0.0f);
|
||||
GL11.glRotatef(-2.0f * angle - 9.0f, 0.0f, 0.0f, 1.0f);
|
||||
GL11.glCallList(gear2);
|
||||
GL11.glPopMatrix();
|
||||
|
||||
GL11.glPushMatrix();
|
||||
GL11.glTranslatef(-3.1f, 4.2f, 0.0f);
|
||||
GL11.glRotatef(-2.0f * angle - 25.0f, 0.0f, 0.0f, 1.0f);
|
||||
GL11.glCallList(gear3);
|
||||
GL11.glPopMatrix();
|
||||
|
||||
GL11.glPopMatrix();
|
||||
|
||||
Display.update();
|
||||
if (startTime > System.currentTimeMillis()) {
|
||||
fps++;
|
||||
} else {
|
||||
long timeUsed = 5000 + (startTime - System.currentTimeMillis());
|
||||
startTime = System.currentTimeMillis() + 5000;
|
||||
System.out.println(fps + " frames in " + (float) (timeUsed / 1000f) + " seconds = "
|
||||
+ (fps / (timeUsed / 1000f)));
|
||||
fps = 0;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
*
|
||||
*/
|
||||
private void init() throws LWJGLException {
|
||||
// create Window of size 300x300
|
||||
Display.setLocation((Display.getDisplayMode().getWidth() - 300) / 2,
|
||||
(Display.getDisplayMode().getHeight() - 300) / 2);
|
||||
Display.setDisplayMode(new DisplayMode(300, 300));
|
||||
Display.setTitle("Gears");
|
||||
Display.create();
|
||||
|
||||
// setup ogl
|
||||
FloatBuffer pos = BufferUtils.createFloatBuffer(4).put(new float[] { 5.0f, 5.0f, 10.0f, 0.0f});
|
||||
FloatBuffer red = BufferUtils.createFloatBuffer(4).put(new float[] { 0.8f, 0.1f, 0.0f, 1.0f});
|
||||
FloatBuffer green = BufferUtils.createFloatBuffer(4).put(new float[] { 0.0f, 0.8f, 0.2f, 1.0f});
|
||||
FloatBuffer blue = BufferUtils.createFloatBuffer(4).put(new float[] { 0.2f, 0.2f, 1.0f, 1.0f});
|
||||
pos.flip();
|
||||
red.flip();
|
||||
green.flip();
|
||||
blue.flip();
|
||||
|
||||
GL11.glLight(GL11.GL_LIGHT0, GL11.GL_POSITION, pos);
|
||||
GL11.glEnable(GL11.GL_CULL_FACE);
|
||||
GL11.glEnable(GL11.GL_LIGHTING);
|
||||
GL11.glEnable(GL11.GL_LIGHT0);
|
||||
GL11.glEnable(GL11.GL_DEPTH_TEST);
|
||||
|
||||
/* make the gears */
|
||||
gear1 = GL11.glGenLists(1);
|
||||
GL11.glNewList(gear1, GL11.GL_COMPILE);
|
||||
GL11.glMaterial(GL11.GL_FRONT, GL11.GL_AMBIENT_AND_DIFFUSE, red);
|
||||
gear(1.0f, 4.0f, 1.0f, 20, 0.7f);
|
||||
GL11.glEndList();
|
||||
|
||||
gear2 = GL11.glGenLists(1);
|
||||
GL11.glNewList(gear2, GL11.GL_COMPILE);
|
||||
GL11.glMaterial(GL11.GL_FRONT, GL11.GL_AMBIENT_AND_DIFFUSE, green);
|
||||
gear(0.5f, 2.0f, 2.0f, 10, 0.7f);
|
||||
GL11.glEndList();
|
||||
|
||||
gear3 = GL11.glGenLists(1);
|
||||
GL11.glNewList(gear3, GL11.GL_COMPILE);
|
||||
GL11.glMaterial(GL11.GL_FRONT, GL11.GL_AMBIENT_AND_DIFFUSE, blue);
|
||||
gear(1.3f, 2.0f, 0.5f, 10, 0.7f);
|
||||
GL11.glEndList();
|
||||
|
||||
GL11.glEnable(GL11.GL_NORMALIZE);
|
||||
|
||||
GL11.glMatrixMode(GL11.GL_PROJECTION);
|
||||
|
||||
System.err.println("GL_VENDOR: " + GL11.glGetString(GL11.GL_VENDOR));
|
||||
System.err.println("GL_RENDERER: " + GL11.glGetString(GL11.GL_RENDERER));
|
||||
System.err.println("GL_VERSION: " + GL11.glGetString(GL11.GL_VERSION));
|
||||
System.err.println();
|
||||
System.err.println("glLoadTransposeMatrixfARB() supported: " + GLContext.GL_ARB_transpose_matrix);
|
||||
if (!GLContext.GL_ARB_transpose_matrix) {
|
||||
// --- not using extensions
|
||||
GL11.glLoadIdentity();
|
||||
} else {
|
||||
// --- using extensions
|
||||
final FloatBuffer identityTranspose = BufferUtils.createFloatBuffer(16).put(
|
||||
new float[] { 1, 0, 0, 0, 0, 1, 0, 0,
|
||||
0, 0, 1, 0, 0, 0, 0, 1});
|
||||
identityTranspose.flip();
|
||||
ARBTransposeMatrix.glLoadTransposeMatrixARB(identityTranspose);
|
||||
}
|
||||
|
||||
float h = (float) 300 / (float) 300;
|
||||
GL11.glFrustum(-1.0f, 1.0f, -h, h, 5.0f, 60.0f);
|
||||
GL11.glMatrixMode(GL11.GL_MODELVIEW);
|
||||
GL11.glLoadIdentity();
|
||||
GL11.glTranslatef(0.0f, 0.0f, -40.0f);
|
||||
}
|
||||
|
||||
/**
|
||||
* Draw a gear wheel. You'll probably want to call this function when
|
||||
* building a display list since we do a lot of trig here.
|
||||
*
|
||||
* @param inner_radius radius of hole at center
|
||||
* @param outer_radius radius at center of teeth
|
||||
* @param width width of gear
|
||||
* @param teeth number of teeth
|
||||
* @param tooth_depth depth of tooth
|
||||
*/
|
||||
private void gear(float inner_radius, float outer_radius, float width, int teeth, float tooth_depth) {
|
||||
int i;
|
||||
float r0, r1, r2;
|
||||
float angle, da;
|
||||
float u, v, len;
|
||||
|
||||
r0 = inner_radius;
|
||||
r1 = outer_radius - tooth_depth / 2.0f;
|
||||
r2 = outer_radius + tooth_depth / 2.0f;
|
||||
|
||||
da = 2.0f * (float) Math.PI / teeth / 4.0f;
|
||||
|
||||
GL11.glShadeModel(GL11.GL_FLAT);
|
||||
|
||||
GL11.glNormal3f(0.0f, 0.0f, 1.0f);
|
||||
|
||||
/* draw front face */
|
||||
GL11.glBegin(GL11.GL_QUAD_STRIP);
|
||||
for (i = 0; i <= teeth; i++) {
|
||||
angle = i * 2.0f * (float) Math.PI / teeth;
|
||||
GL11.glVertex3f(r0 * (float) Math.cos(angle), r0 * (float) Math.sin(angle), width * 0.5f);
|
||||
GL11.glVertex3f(r1 * (float) Math.cos(angle), r1 * (float) Math.sin(angle), width * 0.5f);
|
||||
if (i < teeth) {
|
||||
GL11.glVertex3f(r0 * (float) Math.cos(angle), r0 * (float) Math.sin(angle), width * 0.5f);
|
||||
GL11.glVertex3f(r1 * (float) Math.cos(angle + 3.0f * da), r1 * (float) Math.sin(angle + 3.0f * da),
|
||||
width * 0.5f);
|
||||
}
|
||||
}
|
||||
GL11.glEnd();
|
||||
|
||||
/* draw front sides of teeth */
|
||||
GL11.glBegin(GL11.GL_QUADS);
|
||||
for (i = 0; i < teeth; i++) {
|
||||
angle = i * 2.0f * (float) Math.PI / teeth;
|
||||
GL11.glVertex3f(r1 * (float) Math.cos(angle), r1 * (float) Math.sin(angle), width * 0.5f);
|
||||
GL11.glVertex3f(r2 * (float) Math.cos(angle + da), r2 * (float) Math.sin(angle + da), width * 0.5f);
|
||||
GL11.glVertex3f(r2 * (float) Math.cos(angle + 2.0f * da), r2 * (float) Math.sin(angle + 2.0f * da), width * 0.5f);
|
||||
GL11.glVertex3f(r1 * (float) Math.cos(angle + 3.0f * da), r1 * (float) Math.sin(angle + 3.0f * da), width * 0.5f);
|
||||
}
|
||||
GL11.glEnd();
|
||||
|
||||
/* draw back face */
|
||||
GL11.glBegin(GL11.GL_QUAD_STRIP);
|
||||
for (i = 0; i <= teeth; i++) {
|
||||
angle = i * 2.0f * (float) Math.PI / teeth;
|
||||
GL11.glVertex3f(r1 * (float) Math.cos(angle), r1 * (float) Math.sin(angle), -width * 0.5f);
|
||||
GL11.glVertex3f(r0 * (float) Math.cos(angle), r0 * (float) Math.sin(angle), -width * 0.5f);
|
||||
GL11.glVertex3f(r1 * (float) Math.cos(angle + 3 * da), r1 * (float) Math.sin(angle + 3 * da), -width * 0.5f);
|
||||
GL11.glVertex3f(r0 * (float) Math.cos(angle), r0 * (float) Math.sin(angle), -width * 0.5f);
|
||||
}
|
||||
GL11.glEnd();
|
||||
|
||||
/* draw back sides of teeth */
|
||||
GL11.glBegin(GL11.GL_QUADS);
|
||||
for (i = 0; i < teeth; i++) {
|
||||
angle = i * 2.0f * (float) Math.PI / teeth;
|
||||
GL11.glVertex3f(r1 * (float) Math.cos(angle + 3 * da), r1 * (float) Math.sin(angle + 3 * da), -width * 0.5f);
|
||||
GL11.glVertex3f(r2 * (float) Math.cos(angle + 2 * da), r2 * (float) Math.sin(angle + 2 * da), -width * 0.5f);
|
||||
GL11.glVertex3f(r2 * (float) Math.cos(angle + da), r2 * (float) Math.sin(angle + da), -width * 0.5f);
|
||||
GL11.glVertex3f(r1 * (float) Math.cos(angle), r1 * (float) Math.sin(angle), -width * 0.5f);
|
||||
}
|
||||
GL11.glEnd();
|
||||
|
||||
/* draw outward faces of teeth */
|
||||
GL11.glBegin(GL11.GL_QUAD_STRIP);
|
||||
for (i = 0; i < teeth; i++) {
|
||||
angle = i * 2.0f * (float) Math.PI / teeth;
|
||||
GL11.glVertex3f(r1 * (float) Math.cos(angle), r1 * (float) Math.sin(angle), width * 0.5f);
|
||||
GL11.glVertex3f(r1 * (float) Math.cos(angle), r1 * (float) Math.sin(angle), -width * 0.5f);
|
||||
u = r2 * (float) Math.cos(angle + da) - r1 * (float) Math.cos(angle);
|
||||
v = r2 * (float) Math.sin(angle + da) - r1 * (float) Math.sin(angle);
|
||||
len = (float) Math.sqrt(u * u + v * v);
|
||||
u /= len;
|
||||
v /= len;
|
||||
GL11.glNormal3f(v, -u, 0.0f);
|
||||
GL11.glVertex3f(r2 * (float) Math.cos(angle + da), r2 * (float) Math.sin(angle + da), width * 0.5f);
|
||||
GL11.glVertex3f(r2 * (float) Math.cos(angle + da), r2 * (float) Math.sin(angle + da), -width * 0.5f);
|
||||
GL11.glNormal3f((float) Math.cos(angle), (float) Math.sin(angle), 0.0f);
|
||||
GL11.glVertex3f(r2 * (float) Math.cos(angle + 2 * da), r2 * (float) Math.sin(angle + 2 * da), width * 0.5f);
|
||||
GL11.glVertex3f(r2 * (float) Math.cos(angle + 2 * da), r2 * (float) Math.sin(angle + 2 * da), -width * 0.5f);
|
||||
u = r1 * (float) Math.cos(angle + 3 * da) - r2 * (float) Math.cos(angle + 2 * da);
|
||||
v = r1 * (float) Math.sin(angle + 3 * da) - r2 * (float) Math.sin(angle + 2 * da);
|
||||
GL11.glNormal3f(v, -u, 0.0f);
|
||||
GL11.glVertex3f(r1 * (float) Math.cos(angle + 3 * da), r1 * (float) Math.sin(angle + 3 * da), width * 0.5f);
|
||||
GL11.glVertex3f(r1 * (float) Math.cos(angle + 3 * da), r1 * (float) Math.sin(angle + 3 * da), -width * 0.5f);
|
||||
GL11.glNormal3f((float) Math.cos(angle), (float) Math.sin(angle), 0.0f);
|
||||
}
|
||||
GL11.glVertex3f(r1 * (float) Math.cos(0), r1 * (float) Math.sin(0), width * 0.5f);
|
||||
GL11.glVertex3f(r1 * (float) Math.cos(0), r1 * (float) Math.sin(0), -width * 0.5f);
|
||||
GL11.glEnd();
|
||||
|
||||
GL11.glShadeModel(GL11.GL_SMOOTH);
|
||||
|
||||
/* draw inside radius cylinder */
|
||||
GL11.glBegin(GL11.GL_QUAD_STRIP);
|
||||
for (i = 0; i <= teeth; i++) {
|
||||
angle = i * 2.0f * (float) Math.PI / teeth;
|
||||
GL11.glNormal3f(-(float) Math.cos(angle), -(float) Math.sin(angle), 0.0f);
|
||||
GL11.glVertex3f(r0 * (float) Math.cos(angle), r0 * (float) Math.sin(angle), -width * 0.5f);
|
||||
GL11.glVertex3f(r0 * (float) Math.cos(angle), r0 * (float) Math.sin(angle), width * 0.5f);
|
||||
}
|
||||
GL11.glEnd();
|
||||
}
|
||||
}
|
||||
Loading…
Reference in New Issue