From 1c2b9629f0c5375c06de34ff73393a2d656d987a Mon Sep 17 00:00:00 2001
From: Ziver Koc <ziver@koc.se>
Date: Sat, 7 Apr 2007 18:14:19 +0000
Subject: [PATCH] Now BitmapedText is working whit a costum mirrored font image

---
 src/ei/engine/effects/BitmapText.java |  71 +++++---
 src/ei/engine/effects/Text.java       | 239 --------------------------
 src/ei/engine/test/TextTest.java      |   4 +-
 3 files changed, 49 insertions(+), 265 deletions(-)
 delete mode 100644 src/ei/engine/effects/Text.java

diff --git a/src/ei/engine/effects/BitmapText.java b/src/ei/engine/effects/BitmapText.java
index a51675b..6c52c9c 100644
--- a/src/ei/engine/effects/BitmapText.java
+++ b/src/ei/engine/effects/BitmapText.java
@@ -15,10 +15,13 @@ import ei.engine.texture.TextureLoader;
  */
 
 public class BitmapText extends Entity{
-	private static final int CHAR_SIZE = 10;
     private Texture texture;
     
+    // The Text to display
     private String text;
+    // Base Display List For The Font Set
+    private static int base = -1;
+    private boolean bold = false;
 	
 	/**
 	 * Create a Text object
@@ -27,7 +30,9 @@ public class BitmapText extends Entity{
 	 */
     public BitmapText(String name) {
 		super(name);
-		texture = TextureLoader.getTextureLoaderInstance().getTexture("data/font.png");
+		texture = TextureLoader.getTextureLoaderInstance().getTexture("data/font.bmp");
+		if(base < 0)
+			buildFont();
 	}
     
     /**
@@ -39,6 +44,10 @@ public class BitmapText extends Entity{
     	text = msg;
     }
 	
+    public void setBold(boolean b){
+    	bold = b;
+    }
+    
     /**
      * Render the text
      */
@@ -56,35 +65,49 @@ public class BitmapText extends Entity{
     		
     		texture.bindGL();
     		
-            for(int i=0; i<text.length() ;i++) {
-            	int c = text.charAt(i);
-                float y = c/16;
-                float x = c-(16*y);
-                y /= texture.getImageHeight();
-                x /= texture.getImageWidth();
-                float size = (float)CHAR_SIZE/texture.getImageWidth();
-                
-                System.out.println("lol: "+x+" - "+y+" - "+size);
-                
-                GL11.glBegin(GL11.GL_QUADS);
-	                GL11.glTexCoord2f(x, y);
-	                GL11.glVertex3f(-0.0450f, 0.0450f, 0.0f);
-	                GL11.glTexCoord2f((x + size), y);
-	                GL11.glVertex3f(0.0450f, 0.0450f, 0.0f);
-	                GL11.glTexCoord2f((x + size), y - size);
-	                GL11.glVertex3f(0.0450f, -0.0450f, 0.0f);
-	                GL11.glTexCoord2f(x, y - size);
-	                GL11.glVertex3f(-0.0450f, -0.0450f, 0.0f);
-                GL11.glEnd();
-                
-                GL11.glTranslatef(size, 0.0f, 0.0f);
+            int baseOffset = base - 32;                // Choose The Font Set (0 or 1)
+            if(bold) baseOffset+= 128;
+            for(int i=0;i<text.length();i++) {
+                GL11.glCallList(baseOffset + text.charAt(i));
+                GL11.glTranslatef(3.0f, 0.0f, 0.0f);
             }
     		
     		// restore the model view matrix to prevent contamination
     		GL11.glPopMatrix();
     	}
     }
+    
+    /**
+     * From NeHe
+     * @author Mark Bernard
+     *
+     */
+    private void buildFont() {                                  // Build Our Font Display List
+        float   cx;                                             // Holds Our X Character Coord
+        float   cy;                                             // Holds Our Y Character Coord
 
+        base = GL11.glGenLists(256);                            // Creating 256 Display Lists
+        texture.bindGL();     									// Select Our Font Texture
+        for (int i=0;i<256;i++) {                               // Loop Through All 256 Lists
+            cx = ((float)(i % 16)) / 16.0f;                     // X Position Of Current Character
+            cy = ((float)(i / 16)) / 16.0f;                     // Y Position Of Current Character
+
+            GL11.glNewList(base + i, GL11.GL_COMPILE);          // Start Building A List
+            GL11.glBegin(GL11.GL_QUADS);                        // Use A Quad For Each Character
+            GL11.glTexCoord2f(cx, 1 - cy - 0.0625f);            // Texture Coord (Bottom Left)
+            GL11.glVertex2i(0, 0);                              // Vertex Coord (Bottom Left)
+            GL11.glTexCoord2f(cx + 0.0625f, 1 - cy - 0.0625f);  // Texture Coord (Bottom Right)
+            GL11.glVertex2i(16,0);                              // Vertex Coord (Bottom Right)
+            GL11.glTexCoord2f(cx + 0.0625f, 1 - cy);            // Texture Coord (Top Right)
+            GL11.glVertex2i(16,16);                             // Vertex Coord (Top Right)
+            GL11.glTexCoord2f(cx, 1 - cy);                      // Texture Coord (Top Left)
+            GL11.glVertex2i(0, 16);                             // Vertex Coord (Top Left)
+            GL11.glEnd();                                       // Done Building Our Quad (Character)
+            GL11.glTranslatef(10.0f, 0.0f, 0.0f);               // Move To The Right Of The Character
+            GL11.glEndList();                                   // Done Building The Display List
+        }                                                       // Loop Until All 256 Are Built
+    }
+    
 	public Rectangle getBound() {
 		// TODO Auto-generated method stub
 		return null;
diff --git a/src/ei/engine/effects/Text.java b/src/ei/engine/effects/Text.java
deleted file mode 100644
index d461cf0..0000000
--- a/src/ei/engine/effects/Text.java
+++ /dev/null
@@ -1,239 +0,0 @@
-package ei.engine.effects;
-
-import java.awt.Color;
-import java.awt.Font;
-import java.awt.FontMetrics;
-import java.awt.Graphics2D;
-import java.awt.Rectangle;
-import java.awt.geom.AffineTransform;
-import java.awt.image.AffineTransformOp;
-import java.awt.image.BufferedImage;
-import java.nio.ByteBuffer;
-import java.nio.ByteOrder;
-import java.nio.IntBuffer;
-
-import org.lwjgl.opengl.GL11;
-
-import ei.engine.scene.Entity;
-
-public class Text extends Entity{
-	//build colours for font with alpha transparency
-    private static final Color OPAQUE_WHITE = new Color(0xFFFFFFFF, true);
-    private static final Color TRANSPARENT_BLACK = new Color(0x00000000, true);
-    
-    // Base Display List For The Font Set
-    private int base;
-    private int texture;
-    
-    // Name of the font to use
-	private String fontName = "Courier New";
-	private int fontSize = 24;
-	private String text;
-	
-	/**
-	 * Create a Text object
-	 * 
-	 * @param name The name of this entity
-	 */
-    public Text(String name) {
-		super(name);
-		buildFont();
-	}
-    
-    /**
-     * Set the text to be displayed
-     * 
-     * @param msg The text
-     */
-    public void setText(String msg){
-    	text = msg;
-    }
-	
-    /**
-     * Render the text
-     */
-    public void render(){
-		// store the current model matrix
-		GL11.glPushMatrix();
-
-		//Sets the location
-		super.setTranslationGL();
-		// No rotation enabled
-		//super.setRotationGL(texture.getImageWidth()/2,texture.getImageHeight()/2);
-		//Sets the scale of the sprite
-		super.setScaleGL();
-
-		GL11.glColor3f(0.5f, 0.5f, 0.5f);
-        if(text != null) {
-            GL11.glBindTexture(GL11.GL_TEXTURE_2D, texture);
-            for(int i=0; i<text.length() ;i++) {
-                GL11.glCallList(base + text.charAt(i));
-                GL11.glTranslatef(0.05f, 0.0f, 0.0f);
-            }
-        }
-        
-		// restore the model view matrix to prevent contamination
-		GL11.glPopMatrix();
-    }
-	
-	/**
-	 * Builds a image out of the font and puts it in opengl
-	 * @author Mark Bernard
-	 */
-    private void buildFont() {                          // Build Our Bitmap Font
-        Font font;                                      // Font object
-
-        /* Note that I have set the font to Courier New.  This font is not guraunteed to be on all
-         * systems.  However it is very common so it is likely to be there.  You can replace this name
-         * with any named font on your system or use the Java default names that are guraunteed to be there.
-         * Also note that this will work well with monospace fonts, but does not look as good with
-         * proportional fonts.
-         */
-        BufferedImage fontImage;                        // image for creating the bitmap
-        int bitmapSize = 512;                           // set the size for the bitmap texture
-        boolean sizeFound = false;
-        boolean directionSet = false;
-        int delta = 0;
-
-        /* To find out how much space a Font takes, you need to use a the FontMetrics class.
-         * To get the FontMetrics, you need to get it from a Graphics context.  A Graphics context is
-         * only available from a displayable surface, ie any class that subclasses Component or any Image.
-         * First the font is set on a Graphics object.  Then get the FontMetrics and find out the width
-         * and height of the widest character (W).  Then take the largest of the 2 values and find the
-         * maximum size font that will fit in the size allocated.
-         */
-        while(!sizeFound) {
-            font = new Font(fontName, Font.PLAIN, fontSize);  // Font Name
-            // use BufferedImage.TYPE_4BYTE_ABGR to allow alpha blending
-            fontImage = new BufferedImage(bitmapSize, bitmapSize, BufferedImage.TYPE_4BYTE_ABGR);
-            Graphics2D g = (Graphics2D)fontImage.getGraphics();
-            g.setFont(font);
-            FontMetrics fm = g.getFontMetrics();
-            int width = fm.stringWidth("W");
-            int height = fm.getHeight();
-            int lineWidth = (width > height) ? width * 16 : height * 16;
-            if(!directionSet) {
-                if(lineWidth > bitmapSize) {
-                    delta = -2;
-                }
-                else {
-                    delta = 2;
-                }
-                directionSet = true;
-            }
-            if(delta > 0) {
-                if(lineWidth < bitmapSize) {
-                    fontSize += delta;
-                }
-                else {
-                    sizeFound = true;
-                    fontSize -= delta;
-                }
-            }
-            else if(delta < 0) {
-                if(lineWidth > bitmapSize) {
-                    fontSize += delta;
-                }
-                else {
-                    sizeFound = true;
-                    fontSize -= delta;
-                }
-            }
-        }
-
-        /* Now that a font size has been determined, create the final image, set the font and draw the
-         * standard/extended ASCII character set for that font.
-         */
-        font = new Font(fontName, Font.BOLD, fontSize);  // Font Name
-        // use BufferedImage.TYPE_4BYTE_ABGR to allow alpha blending
-        fontImage = new BufferedImage(bitmapSize, bitmapSize, BufferedImage.TYPE_4BYTE_ABGR);
-        Graphics2D g = (Graphics2D)fontImage.getGraphics();
-        g.setFont(font);
-        g.setColor(OPAQUE_WHITE);
-        g.setBackground(TRANSPARENT_BLACK);
-        FontMetrics fm = g.getFontMetrics();
-        for(int i=0;i<256;i++) {
-            int x = i % 16;
-            int y = i / 16;
-            char ch[] = {(char)i};
-            String temp = new String(ch);
-            g.drawString(temp, (x * 32) + 1, (y * 32) + fm.getAscent());
-        }
-
-        /* The following code is taken directly for the LWJGL example code.
-         * It takes a Java Image and converts it into an OpenGL texture.
-         * This is a very powerful feature as you can use this to generate textures on the fly out
-         * of anything.
-         */
-        //      Flip Image
-        AffineTransform tx = AffineTransform.getScaleInstance(1, -1);
-        tx.translate(0, -fontImage.getHeight(null));
-        AffineTransformOp op =
-            new AffineTransformOp(tx, AffineTransformOp.TYPE_NEAREST_NEIGHBOR);
-        fontImage = op.filter(fontImage, null);
-
-        // Put Image In Memory
-        ByteBuffer scratch =
-            ByteBuffer.allocateDirect(
-                4 * fontImage.getWidth() * fontImage.getHeight());
-
-        byte data[] =
-            (byte[])fontImage.getRaster().getDataElements(
-                0,
-                0,
-                fontImage.getWidth(),
-                fontImage.getHeight(),
-                null);
-        scratch.clear();
-        scratch.put(data);
-        scratch.rewind();
-
-        // Create A IntBuffer For Image Address In Memory
-        IntBuffer buf =
-            ByteBuffer
-                .allocateDirect(4)
-                .order(ByteOrder.nativeOrder())
-                .asIntBuffer();
-        GL11.glGenTextures(buf); // Create Texture In OpenGL
-
-        GL11.glBindTexture(GL11.GL_TEXTURE_2D, buf.get(0));
-        // Typical Texture Generation Using Data From The Image
-
-        // Linear Filtering
-        GL11.glTexParameteri(GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_MIN_FILTER, GL11.GL_LINEAR);
-        // Linear Filtering
-        GL11.glTexParameteri(GL11.GL_TEXTURE_2D, GL11.GL_TEXTURE_MAG_FILTER, GL11.GL_LINEAR);
-        // Generate The Texture
-        GL11.glTexImage2D(GL11.GL_TEXTURE_2D, 0, GL11.GL_RGBA, fontImage.getWidth(), fontImage.getHeight(), 0, GL11.GL_RGBA, GL11.GL_UNSIGNED_BYTE, scratch);
-
-
-        texture = buf.get(0);                           // Return Image Address In Memory
-
-        base = GL11.glGenLists(256);                    // Storage For 256 Characters
-
-        /* Generate the display lists.  One for each character in the standard/extended ASCII chart.
-         */
-        float textureDelta = 1.0f / 16.0f;
-        for(int i=0;i<256;i++) {
-            float u = ((float)(i % 16)) / 16.0f;
-            float v = 1.f - (((float)(i / 16)) / 16.0f);
-            GL11.glNewList(base + i, GL11.GL_COMPILE);
-            GL11.glBindTexture(GL11.GL_TEXTURE_2D, texture);
-            GL11.glBegin(GL11.GL_QUADS);
-                GL11.glTexCoord2f(u, v);
-                GL11.glVertex3f(-0.0450f, 0.0450f, 0.0f);
-                GL11.glTexCoord2f((u + textureDelta), v);
-                GL11.glVertex3f(0.0450f, 0.0450f, 0.0f);
-                GL11.glTexCoord2f((u + textureDelta), v - textureDelta);
-                GL11.glVertex3f(0.0450f, -0.0450f, 0.0f);
-                GL11.glTexCoord2f(u, v - textureDelta);
-                GL11.glVertex3f(-0.0450f, -0.0450f, 0.0f);
-            GL11.glEnd();
-            GL11.glEndList();
-        }
-    }
-
-	public Rectangle getBound() {
-		return null;
-	}
-}
diff --git a/src/ei/engine/test/TextTest.java b/src/ei/engine/test/TextTest.java
index 1e75a0e..d0e91f3 100644
--- a/src/ei/engine/test/TextTest.java
+++ b/src/ei/engine/test/TextTest.java
@@ -18,14 +18,14 @@ public class TextTest extends LWJGLGameWindow{
 
 	protected void init(){
 		text = new BitmapText("Test text");
-		text.setText("LOL THIS IS A TEST!!");
+		text.setText("ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789");
 		pos = 0;
 	}
 	
 	protected void update() {
 		super.update();
 		pos += 0.2f;
-		text.setLocation(new Vector2f(200,200));
+		text.setLocation(new Vector2f(200+pos,200+pos));
 		text.update();
 	}