/*
* Copyright (c) 2013, Oskar Veerhoek
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* The views and conclusions contained in the software and documentation are those
* of the authors and should not be interpreted as representing official policies,
* either expressed or implied, of the FreeBSD Project.
*/
package episode_28;
import org.lwjgl.LWJGLException;
import org.lwjgl.input.Mouse;
import org.lwjgl.opengl.Display;
import org.lwjgl.opengl.DisplayMode;
import org.newdawn.slick.SlickException;
import org.newdawn.slick.UnicodeFont;
import org.newdawn.slick.font.effects.ColorEffect;
import utility.*;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.nio.FloatBuffer;
import java.text.DecimalFormat;
import static org.lwjgl.opengl.GL11.*;
import static org.lwjgl.opengl.GL15.*;
import static org.lwjgl.opengl.GL20.glDeleteProgram;
import static org.lwjgl.opengl.GL20.glUseProgram;
public class TextDemo {
private static UnicodeFont font;
private static final DecimalFormat formatter = new DecimalFormat("#.##");
private static Model model;
private static EulerCamera cam;
private static int shaderProgram;
private static int vboVertexHandle;
private static int vboNormalHandle;
private static final FloatBuffer perspectiveProjectionMatrix = BufferTools.reserveData(16);
private static final FloatBuffer orthographicProjectionMatrix = BufferTools.reserveData(16);
private static final String MODEL_LOCATION = "res/models/bunny.obj";
private static final String VERTEX_SHADER_LOCATION = "res/shaders/vertex_phong_lighting.vs";
private static final String FRAGMENT_SHADER_LOCATION = "res/shaders/vertex_phong_lighting.fs";
private static final int DISPLAY_WIDTH = 640;
private static final int DISPLAY_HEIGHT = 480;
public static void main(String[] args) {
setUpDisplay();
setUpFonts();
setUpVBOs();
setUpCamera();
setUpShaders();
setUpLighting();
while (!Display.isCloseRequested()) {
render();
checkInput();
Display.update();
}
cleanUp();
System.exit(0);
}
private static void render() {
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glLoadIdentity();
cam.applyTranslations();
glUseProgram(shaderProgram);
glLight(GL_LIGHT0, GL_POSITION, BufferTools.asFlippedFloatBuffer(cam.x(), cam.y(), cam.z(), 1));
glBindBuffer(GL_ARRAY_BUFFER, vboVertexHandle);
glVertexPointer(3, GL_FLOAT, 0, 0L);
glBindBuffer(GL_ARRAY_BUFFER, vboNormalHandle);
glNormalPointer(GL_FLOAT, 0, 0L);
glEnableClientState(GL_VERTEX_ARRAY);
glEnableClientState(GL_NORMAL_ARRAY);
glColor3f(0.4f, 0.27f, 0.17f);
glMaterialf(GL_FRONT, GL_SHININESS, 10f);
glDrawArrays(GL_TRIANGLES, 0, model.getFaces().size() * 3);
glDisableClientState(GL_VERTEX_ARRAY);
glDisableClientState(GL_NORMAL_ARRAY);
glUseProgram(0);
glBindBuffer(GL_ARRAY_BUFFER, 0);
glMatrixMode(GL_PROJECTION);
glLoadMatrix(orthographicProjectionMatrix);
glMatrixMode(GL_MODELVIEW);
glPushMatrix();
glLoadIdentity();
glDisable(GL_LIGHTING);
font.drawString(10, 10, "EulerCamera: [x=" + formatter.format(cam.x()) +
",y=" + formatter.format(cam.y()) + ",z=" + formatter.format(cam.z()) + "]");
glEnable(GL_LIGHTING);
glPopMatrix();
glMatrixMode(GL_PROJECTION);
glLoadMatrix(perspectiveProjectionMatrix);
glMatrixMode(GL_MODELVIEW);
}
@SuppressWarnings("unchecked")
private static void setUpFonts() {
java.awt.Font awtFont = new java.awt.Font("Times New Roman", java.awt.Font.BOLD, 18);
font = new UnicodeFont(awtFont);
font.getEffects().add(new ColorEffect(java.awt.Color.white));
font.addAsciiGlyphs();
try {
font.loadGlyphs();
} catch (SlickException e) {
e.printStackTrace();
cleanUp();
}
}
private static void setUpLighting() {
glShadeModel(GL_SMOOTH);
glEnable(GL_DEPTH_TEST);
glEnable(GL_LIGHTING);
glEnable(GL_TEXTURE_2D);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glEnable(GL_LIGHT0);
glLightModel(GL_LIGHT_MODEL_AMBIENT, BufferTools.asFlippedFloatBuffer(new float[]{0.05f, 0.05f, 0.05f, 1f}));
glLight(GL_LIGHT0, GL_POSITION, BufferTools.asFlippedFloatBuffer(new float[]{0, 0, 0, 1}));
glEnable(GL_CULL_FACE);
glCullFace(GL_BACK);
glEnable(GL_COLOR_MATERIAL);
glColorMaterial(GL_FRONT, GL_DIFFUSE);
}
private static void setUpVBOs() {
vboVertexHandle = glGenBuffers();
vboNormalHandle = glGenBuffers();
model = null;
try {
model = OBJLoader.loadModel(new File(MODEL_LOCATION));
} catch (FileNotFoundException e) {
e.printStackTrace();
cleanUp();
System.exit(1);
} catch (IOException e) {
e.printStackTrace();
cleanUp();
System.exit(1);
}
FloatBuffer vertices = BufferTools.reserveData(model.getFaces().size() * 9);
FloatBuffer normals = BufferTools.reserveData(model.getFaces().size() * 9);
for (Model.Face face : model.getFaces()) {
vertices.put(BufferTools.asFloats(model.getVertices().get(face.getVertexIndices()[0] - 1)));
vertices.put(BufferTools.asFloats(model.getVertices().get(face.getVertexIndices()[1] - 1)));
vertices.put(BufferTools.asFloats(model.getVertices().get(face.getVertexIndices()[2] - 1)));
normals.put(BufferTools.asFloats(model.getNormals().get(face.getNormalIndices()[0] - 1)));
normals.put(BufferTools.asFloats(model.getNormals().get(face.getNormalIndices()[1] - 1)));
normals.put(BufferTools.asFloats(model.getNormals().get(face.getNormalIndices()[2] - 1)));
}
vertices.flip();
normals.flip();
glBindBuffer(GL_ARRAY_BUFFER, vboVertexHandle);
glBufferData(GL_ARRAY_BUFFER, vertices, GL_STATIC_DRAW);
glBindBuffer(GL_ARRAY_BUFFER, vboNormalHandle);
glBufferData(GL_ARRAY_BUFFER, normals, GL_STATIC_DRAW);
glBindBuffer(GL_ARRAY_BUFFER, 0);
}
private static void setUpShaders() {
shaderProgram = ShaderLoader.loadShaderPair(VERTEX_SHADER_LOCATION, FRAGMENT_SHADER_LOCATION);
}
private static void setUpCamera() {
cam = new EulerCamera((float) Display.getWidth() / (float) Display.getHeight(), -2.19f, 1.36f, 11.45f);
cam.setFieldOfView(70);
cam.applyPerspectiveMatrix();
glGetFloat(GL_PROJECTION_MATRIX, perspectiveProjectionMatrix);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glOrtho(0, Display.getWidth(), Display.getHeight(), 0, 1, -1);
glGetFloat(GL_PROJECTION_MATRIX, orthographicProjectionMatrix);
glLoadMatrix(perspectiveProjectionMatrix);
glMatrixMode(GL_MODELVIEW);
}
private static void setUpDisplay() {
try {
Display.setDisplayMode(new DisplayMode(DISPLAY_WIDTH, DISPLAY_HEIGHT));
Display.setVSyncEnabled(true);
Display.setTitle("Dynamic Text Demo");
Display.create();
} catch (LWJGLException e) {
System.err.println("The display wasn't initialized correctly. :(");
Display.destroy();
System.exit(1);
}
}
private static void checkInput() {
cam.processMouse(1, 80, -80);
cam.processKeyboard(16, 1, 1, 1);
if (Mouse.isButtonDown(0)) {
Mouse.setGrabbed(true);
} else if (Mouse.isButtonDown(1)) {
Mouse.setGrabbed(false);
}
}
private static void cleanUp() {
glDeleteProgram(shaderProgram);
glDeleteBuffers(vboVertexHandle);
glDeleteBuffers(vboNormalHandle);
Display.destroy();
System.exit(0);
}
}