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Diffstat (limited to 'src/net/java/joglutils/model/examples/DisplayListRenderer.java')
| -rw-r--r-- | src/net/java/joglutils/model/examples/DisplayListRenderer.java | 568 |
1 files changed, 568 insertions, 0 deletions
diff --git a/src/net/java/joglutils/model/examples/DisplayListRenderer.java b/src/net/java/joglutils/model/examples/DisplayListRenderer.java new file mode 100644 index 0000000..f297c24 --- /dev/null +++ b/src/net/java/joglutils/model/examples/DisplayListRenderer.java @@ -0,0 +1,568 @@ +/*
+ * DisplayListModel3D.java
+ *
+ * Created on February 27, 2008, 11:05 PM
+ *
+ * To change this template, choose Tools | Template Manager
+ * and open the template in the editor.
+ */
+
+package net.java.joglutils.model.examples;
+
+import net.java.joglutils.model.*;
+import com.sun.opengl.util.texture.Texture;
+import com.sun.opengl.util.texture.TextureCoords;
+import com.sun.opengl.util.texture.TextureIO;
+import java.awt.image.BufferedImage;
+import java.io.IOException;
+import java.net.URL;
+import java.util.HashMap;
+import javax.imageio.ImageIO;
+import javax.media.opengl.GL;
+import javax.media.opengl.GLAutoDrawable;
+import net.java.joglutils.model.ResourceRetriever;
+import net.java.joglutils.model.geometry.Bounds;
+import net.java.joglutils.model.geometry.Material;
+import net.java.joglutils.model.geometry.Mesh;
+import net.java.joglutils.model.geometry.Model;
+import net.java.joglutils.model.geometry.Vec4;
+import net.java.joglutils.model.iModel3DRenderer;
+
+/**
+ *
+ * @author RodgersGB
+ *
+ * modifications made by Brian Wood and Z-Knight
+ */
+public class DisplayListRenderer implements iModel3DRenderer {
+ private static DisplayListRenderer instance = new DisplayListRenderer();
+ private DisplayListCache listCache = new DisplayListCache();
+ private HashMap<Integer, Texture> texture;
+ private int modelBoundsList = -1;
+ private int objectBoundsList = 1;
+ private boolean isDebugging = true;
+
+ /** Creates a new instance of DisplayListModel3D */
+ public DisplayListRenderer() {
+ }
+
+ public static DisplayListRenderer getInstance() {
+ return instance;
+ }
+
+ public void debug(boolean value) {
+ this.isDebugging = value;
+ }
+
+ public void render(Object context, Model model)
+ {
+ GL gl = null;
+
+ if (context instanceof GL)
+ gl = (GL) context;
+
+ else if (context instanceof GLAutoDrawable)
+ gl = ((GLAutoDrawable) context).getGL();
+
+ if (gl == null) {
+ return;
+ }
+
+ if (model == null) {
+ return;
+ }
+
+ int displayList = listCache.get(model);
+
+ if(displayList < 0) {
+ displayList = initialize(gl, model);
+ if (this.isDebugging)
+ System.out.println("Initialized the display list for model: " + model.getSource());
+ }
+
+ // save some current state variables
+ boolean isTextureEnabled = gl.glIsEnabled(GL.GL_TEXTURE_2D);
+ boolean isLightingEnabled = gl.glIsEnabled(GL.GL_LIGHTING);
+ boolean isMaterialEnabled = gl.glIsEnabled(GL.GL_COLOR_MATERIAL);
+
+ // check texture
+ if (model.isUsingTexture()) { gl.glEnable(GL.GL_TEXTURE_2D); }
+ else { gl.glDisable(GL.GL_TEXTURE_2D); }
+
+ // check wireframe
+ if (model.isRenderingAsWireframe()) { gl.glPolygonMode(GL.GL_FRONT_AND_BACK, GL.GL_LINE); }
+ else { gl.glPolygonMode(GL.GL_FRONT_AND_BACK, GL.GL_FILL); }
+
+ // check lighting
+ if (model.isUsingLighting()) { gl.glEnable(GL.GL_LIGHTING); }
+ else { gl.glDisable(GL.GL_LIGHTING); }
+
+ gl.glDisable(GL.GL_COLOR_MATERIAL);
+
+ gl.glPushMatrix();
+
+ // check for unit size model
+ if (model.isUnitizeSize()) {
+ float scale = 1.0f/model.getBounds().getRadius();
+ gl.glScalef(scale, scale, scale);
+ }
+
+ if (model.isCentered()) {
+ Vec4 center = model.getCenterPoint();
+ gl.glTranslatef(-center.x, -center.y, -center.z);
+ }
+
+ if (model.isRenderModel())
+ gl.glCallList(displayList);
+
+ // Disabled lighting for drawing the boundary lines so they are all white (or whatever I chose)
+ gl.glDisable(GL.GL_LIGHTING);
+ if (model.isRenderModelBounds())
+ gl.glCallList(modelBoundsList);
+ if (model.isRenderObjectBounds())
+ gl.glCallList(objectBoundsList);
+
+ gl.glPopMatrix();
+
+ // Reset the flags back for lighting and texture
+ if (isTextureEnabled) {
+ gl.glEnable(GL.GL_TEXTURE_2D);
+ } else {
+ gl.glDisable(GL.GL_TEXTURE_2D);
+ }
+
+ if (isLightingEnabled) {
+ gl.glEnable(GL.GL_LIGHTING);
+ } else {
+ gl.glDisable(GL.GL_LIGHTING);
+ }
+
+ if (isMaterialEnabled) {
+ gl.glEnable(GL.GL_COLOR_MATERIAL);
+ } else {
+ gl.glDisable(GL.GL_COLOR_MATERIAL);
+ }
+ }
+
+ /**
+ * Load the model and associated materials, etc
+ *
+ * @param gl
+ * @param file
+ * @return
+ */
+ private int initialize(GL gl, Model model)
+ {
+ if (this.isDebugging)
+ System.out.println("Initialize Model: " + model.getSource());
+
+ int numMaterials = model.getNumberOfMaterials();
+
+ if (this.isDebugging && numMaterials > 0) {
+ System.out.println("\n Loading " + numMaterials + " Materials:");
+ }
+
+ String file = model.getSource();
+ texture = new HashMap<Integer, Texture>();
+ for (int i=0; i<numMaterials; i++) {
+ // TODO:DELETE THIS OLD LINE loadTexture(materials.get(i).strFile, i);
+ // TODO:DELETE THIS OLD LINE materials.get(i).texureId = i;
+
+ String subFileName = "";
+
+ // If this is read from a jar file, then try to find the path relative to the model
+ int index = file.lastIndexOf('/');
+ if (index != -1) {
+ subFileName = file.substring(0,index+1);
+ } else {
+ // Else, the file path of the model was not from a jar file, so check maybe it
+ // was from a local file and get that path.
+ index = file.lastIndexOf('\\');
+
+ if (index != -1) {
+ subFileName = file.substring(0,index+1);
+ }
+ }
+
+ if (model.getMaterial(i).strFile != null) {
+ if (this.isDebugging)
+ System.out.print(" Material: " + subFileName + model.getMaterial(i).strFile);
+
+ URL result;
+ try {
+ result = ResourceRetriever.getResourceAsUrl(subFileName + model.getMaterial(i).strFile);
+ } catch(IOException e) {
+ if (this.isDebugging)
+ System.err.println(" ... failed");
+ continue;
+ }
+
+ if (result != null && !result.getPath().endsWith("/") && !result.getPath().endsWith("\\")) {
+ loadTexture(result, i);
+ model.getMaterial(i).textureId = i;
+ if (this.isDebugging)
+ System.out.println(" ... done. Texture ID: " + i);
+ } else if (this.isDebugging) {
+ System.out.println(" ... failed (no result for material)");
+ }
+ }
+ }
+
+ if (this.isDebugging && numMaterials > 0) {
+ System.out.println(" Load Materials: Done");
+ }
+
+ if (this.isDebugging)
+ System.out.println("\n Generate Lists:");
+ int compiledList = listCache.generateList(model, gl, 3);
+
+ if (this.isDebugging)
+ System.out.println(" Model List");
+ gl.glNewList(compiledList, GL.GL_COMPILE);
+ genList(gl, model);
+ gl.glEndList();
+
+ modelBoundsList = compiledList + 1;
+
+ if (this.isDebugging)
+ System.out.println(" Boundary List");
+ gl.glNewList(modelBoundsList, GL.GL_COMPILE);
+ genModelBoundsList(gl, model);
+ gl.glEndList();
+
+ objectBoundsList = compiledList + 2;
+
+ if (this.isDebugging)
+ System.out.println(" Object Boundary List");
+ gl.glNewList(objectBoundsList, GL.GL_COMPILE);
+ genObjectBoundsList(gl, model);
+ gl.glEndList();
+
+ if (this.isDebugging)
+ {
+ System.out.println(" Generate Lists: Done");
+ System.out.println("Load Model: Done");
+ }
+
+ return compiledList;
+ }
+
+ /**
+ * Load a texture given by the specified URL and assign it to the texture
+ * id that is passed in.
+ *
+ * @param url
+ * @param id
+ */
+ private void loadTexture(URL url, int id) {
+ if ( url != null ) {
+ BufferedImage bufferedImage = null;
+
+ try {
+ bufferedImage = ImageIO.read(url);
+ } catch (Exception e) {
+ System.err.println(" ... FAILED loading texture with exception: "+e.getMessage());
+ return;
+ }
+
+ texture.put(id, TextureIO.newTexture(bufferedImage, true));
+ }
+ }
+
+ /**
+ * Generate the model display list
+ *
+ * @param gl
+ */
+ private void genList(GL gl, Model model) {
+ TextureCoords coords;
+
+ for (int i=0; i<model.getNumberOfMeshes(); i++) {
+ Mesh tempObj = model.getMesh(i);
+
+ if (tempObj.numOfFaces == 0) {
+ System.err.println("Mesh: " +tempObj.name + " has no faces");
+ continue;
+ }
+
+ if(tempObj.hasTexture && texture.get(tempObj.materialID) != null) {
+ Texture t = texture.get(tempObj.materialID);
+
+ // switch to texture mode and push a new matrix on the stack
+ gl.glMatrixMode(GL.GL_TEXTURE);
+ gl.glPushMatrix();
+
+ // check to see if the texture needs flipping
+ if (t.getMustFlipVertically()) {
+ gl.glScaled(1, -1, 1);
+ gl.glTranslated(0, -1, 0);
+ }
+
+ // switch to modelview matrix and push a new matrix on the stack
+ gl.glMatrixMode(GL.GL_MODELVIEW);
+ gl.glPushMatrix();
+
+ // This is required to repeat textures...because some are not and so only
+ // part of the model gets filled in....Might be a way to check if this is
+ // required per object but I'm not sure...would need to research this.
+ gl.glTexParameteri(GL.GL_TEXTURE_2D, GL.GL_TEXTURE_WRAP_S, GL.GL_REPEAT);
+ gl.glTexParameteri(GL.GL_TEXTURE_2D, GL.GL_TEXTURE_WRAP_T, GL.GL_REPEAT);
+
+ // enable, bind and get texture coordinates
+ t.enable();
+ t.bind();
+ coords = t.getImageTexCoords();
+ }
+
+ for (int j=0; j<tempObj.numOfFaces; j++) {
+
+ // If the object has a texture, then do nothing till later...else
+ // apply the material property to it.
+ if(tempObj.hasTexture) {
+ // nothing
+
+ // Has no texture but has a material instead and this material is
+ // the FACES material, and not the OBJECTS material ID as being used
+ // incorrectly below...by specification, the materialID is associated
+ // with a FACE and not an OBJECT
+ } else {
+ if (tempObj.faces[j].materialID < model.getNumberOfMaterials()) {
+ float[] rgba = new float[4];
+
+ Material material = model.getMaterial(tempObj.faces[j].materialID);
+ gl.glMaterialfv(GL.GL_FRONT, GL.GL_DIFFUSE, material.diffuseColor.getRGBComponents(rgba), 0);
+ gl.glMaterialfv(GL.GL_FRONT, GL.GL_AMBIENT, material.ambientColor.getRGBComponents(rgba), 0);
+ gl.glMaterialfv(GL.GL_FRONT, GL.GL_SPECULAR, material.specularColor.getRGBComponents(rgba), 0);
+ gl.glMaterialf(GL.GL_FRONT, GL.GL_SHININESS, material.shininess);
+ gl.glMaterialfv(GL.GL_FRONT, GL.GL_EMISSION, material.emissive.getRGBComponents(rgba), 0);
+ }
+ }
+
+ int indexType = 0;
+ int vertexIndex = 0;
+ int normalIndex = 0;
+ int textureIndex = 0;
+ gl.glBegin(GL.GL_POLYGON);
+ //TODO: the number of vertices for a face is not always 3
+ for (int whichVertex=0; whichVertex<tempObj.faces[j].vertIndex.length; whichVertex++) {
+ vertexIndex = tempObj.faces[j].vertIndex[whichVertex];
+
+ try {
+ normalIndex = tempObj.faces[j].normalIndex[whichVertex];
+
+ indexType = 0;
+ gl.glNormal3f(tempObj.normals[normalIndex].x, tempObj.normals[normalIndex].y, tempObj.normals[normalIndex].z);
+
+ if (tempObj.hasTexture) {
+ if (tempObj.texCoords != null) {
+ textureIndex = tempObj.faces[j].coordIndex[whichVertex];
+ indexType = 1;
+ gl.glTexCoord2f(tempObj.texCoords[textureIndex].u, tempObj.texCoords[textureIndex].v);
+ }
+ }
+ indexType = 2;
+ gl.glVertex3f(tempObj.vertices[vertexIndex].x, tempObj.vertices[vertexIndex].y, tempObj.vertices[vertexIndex].z);
+ }
+ catch (Exception e) {
+ e.printStackTrace();
+ switch (indexType) {
+ case 0:
+ System.err.println("Normal index " + normalIndex + " is out of bounds");
+ break;
+
+ case 1:
+ System.err.println("Texture index " + textureIndex + " is out of bounds");
+ break;
+
+ case 2:
+ System.err.println("Vertex index " + vertexIndex + " is out of bounds");
+ break;
+ }
+ }
+ }
+ gl.glEnd();
+ }
+
+ if (tempObj.hasTexture) {
+ Texture t = texture.get(tempObj.materialID);
+ if (t != null)
+ t.disable();
+
+ gl.glMatrixMode(GL.GL_TEXTURE);
+ gl.glPopMatrix();
+
+ gl.glMatrixMode(GL.GL_MODELVIEW);
+ gl.glPopMatrix();
+ }
+ }
+
+ // Try this clearing of color so it won't use the previous color
+ gl.glColor3f(1.0f, 1.0f, 1.0f);
+ }
+
+ /**
+ * Render the desired object of the model (specified by an id number of
+ * the object)
+ *
+ * @param gl
+ * @param id
+ */
+ public void renderBoundsOfObject(GL gl, int id, Model model) {
+ if (id >=0 && id <= model.getNumberOfMeshes()) {
+ if (model.getMesh(id).bounds != null) {
+ drawBounds(gl, model.getMesh(id).bounds);
+ }
+ }
+ }
+
+
+ /**
+ * Draw the boundary of the model (the large box representing the entire
+ * model and not the object in it)
+ *
+ * @param gLDrawable
+ */
+ private void genModelBoundsList(GLAutoDrawable gLDrawable, Model model) {
+ GL gl = gLDrawable.getGL();
+ drawBounds(gl, model.getBounds());
+ }
+
+ /**
+ * Draw the boundary of the model (the large box representing the entire
+ * model and not the object in it)
+ *
+ * @param gl
+ */
+ private void genModelBoundsList(GL gl, Model model) {
+ drawBounds(gl, model.getBounds());
+ }
+
+ /**
+ * Draw the boundaries over all of the objects of the model
+ *
+ * @param gLDrawable
+ */
+ private void genObjectBoundsList(GLAutoDrawable gLDrawable, Model model) {
+ GL gl = gLDrawable.getGL();
+ genObjectBoundsList(gl, model);
+ }
+
+ /**
+ * Draw the boundaries over all of the objects of the model
+ *
+ * @param gl
+ */
+ private void genObjectBoundsList(GL gl, Model model) {
+ for (int i=0; i<model.getNumberOfMeshes(); i++) {
+ if (model.getMesh(i).bounds != null) {
+ drawBounds(gl, model.getMesh(i).bounds);
+ }
+ }
+ }
+
+ /**
+ * Draws the bounding box of the object using the max and min extrema
+ * points.
+ *
+ * @param gl
+ * @param bounds
+ */
+ private void drawBounds(GL gl, Bounds bounds) {
+ // Front Face
+ gl.glBegin(GL.GL_LINE_LOOP);
+ gl.glVertex3f(bounds.min.x, bounds.min.y, bounds.min.z);
+ gl.glVertex3f(bounds.max.x, bounds.min.y, bounds.min.z);
+ gl.glVertex3f(bounds.max.x, bounds.max.y, bounds.min.z);
+ gl.glVertex3f(bounds.min.x, bounds.max.y, bounds.min.z);
+ gl.glEnd();
+
+ // Back Face
+ gl.glBegin(GL.GL_LINE_LOOP);
+ gl.glVertex3f(bounds.min.x, bounds.min.y, bounds.max.z);
+ gl.glVertex3f(bounds.max.x, bounds.min.y, bounds.max.z);
+ gl.glVertex3f(bounds.max.x, bounds.max.y, bounds.max.z);
+ gl.glVertex3f(bounds.min.x, bounds.max.y, bounds.max.z);
+ gl.glEnd();
+
+ // Connect the corners between the front and back face.
+ gl.glBegin(GL.GL_LINES);
+ gl.glVertex3f(bounds.min.x, bounds.min.y, bounds.min.z);
+ gl.glVertex3f(bounds.min.x, bounds.min.y, bounds.max.z);
+
+ gl.glVertex3f(bounds.max.x, bounds.min.y, bounds.min.z);
+ gl.glVertex3f(bounds.max.x, bounds.min.y, bounds.max.z);
+
+ gl.glVertex3f(bounds.max.x, bounds.max.y, bounds.min.z);
+ gl.glVertex3f(bounds.max.x, bounds.max.y, bounds.max.z);
+
+ gl.glVertex3f(bounds.min.x, bounds.max.y, bounds.min.z);
+ gl.glVertex3f(bounds.min.x, bounds.max.y, bounds.max.z);
+ gl.glEnd();
+ }
+
+ /**
+ * Convert an Unsigned byte to integer
+ *
+ * @param b
+ * @return
+ */
+ public int unsignedByteToInt(byte b) {
+ return (int) b & 0xFF;
+ }
+
+ /**
+ * Convert integer to float
+ *
+ * @param i
+ * @return
+ */
+ public float intToFloat(int i) {
+ return (float) i / 255.0f;
+ }
+
+ public class DisplayListCache {
+ private HashMap <Object, Integer>listCache;
+
+ /** Creates a new instance of WWDisplayListCache */
+ private DisplayListCache() {
+ listCache = new HashMap<Object, Integer>();
+ }
+
+ public void clear() {
+ listCache.clear();
+ }
+
+ public int get(Object objID) {
+ if (listCache.containsKey(objID))
+ return listCache.get(objID);
+ else
+ return -1;
+ }
+
+ public void remove(Object objID, GL gl, int howMany) {
+ Integer list = listCache.get(objID);
+
+ if(list != null)
+ gl.glDeleteLists(list, howMany);
+
+ listCache.remove(objID);
+ }
+
+ /**
+ * Returns an integer identifier for an OpenGL display list based on the
+ * object being passed in. If the object already has a display list
+ * allocated, the existing ID is returned.
+ */
+ public int generateList(Object objID, GL gl, int howMany) {
+ Integer list = null;
+
+ list = listCache.get(objID);
+ if(list == null){
+ list = new Integer(gl.glGenLists(howMany));
+ listCache.put(objID, list);
+ }
+
+ return list;
+ }
+ }
+}
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