From bbce363a26b4d18b51e7a6f10411952ee13a0085 Mon Sep 17 00:00:00 2001
From: Nic0Nic0Nii <sigonasr2@yahoo.com>
Date: Mon, 22 Nov 2021 07:23:57 +0000
Subject: [PATCH] Prepare for graphical transformations.

Co-authored-by: sigonasr2 <sigonasr2@gmail.com>
---
 src/sig/Panel.java        |  9 ++++---
 src/sig/RenderKernel.java | 57 ++++++++++++++++++++++-----------------
 src/sig/SigKeeper.java    |  1 +
 3 files changed, 39 insertions(+), 28 deletions(-)

diff --git a/src/sig/Panel.java b/src/sig/Panel.java
index 16be325..ecd05a8 100644
--- a/src/sig/Panel.java
+++ b/src/sig/Panel.java
@@ -21,7 +21,8 @@ public class Panel extends JPanel implements Runnable {
     public int height=SigKeeper.SCREEN_HEIGHT;
     private Image imageBuffer;   
     private MemoryImageSource mImageProducer;   
-    public int[] pixel;
+    public static int[] pixel; 
+    public static float[] depthBuffer;
     public static float[] triPoints;
 
     RenderKernel renderer;
@@ -39,7 +40,7 @@ public class Panel extends JPanel implements Runnable {
     }
 
     public void init(){
-        triPoints = new float[21*1];
+        triPoints = new float[21*SigKeeper.MAX_TRIANGLE_COUNT];
         cm = getCompatibleColorModel();
         width = getWidth();
         height = getHeight();
@@ -48,11 +49,12 @@ public class Panel extends JPanel implements Runnable {
         int screenSize = width * height;
         if(pixel == null || pixel.length < screenSize){
             pixel = new int[screenSize];   
+            depthBuffer = new float[screenSize];
         }        
         mImageProducer =  new MemoryImageSource(width, height, cm, pixel,0, width);
         mImageProducer.setAnimated(true);
         mImageProducer.setFullBufferUpdates(true);  
-        renderer = new RenderKernel(pixel,triPoints,SigKeeper.texData,SigKeeper.SCREEN_WIDTH,SigKeeper.SCREEN_HEIGHT,256,256);  
+        renderer = new RenderKernel(pixel,triPoints,SigKeeper.texData,SigKeeper.SCREEN_WIDTH,SigKeeper.SCREEN_HEIGHT,256,256,depthBuffer);  
         renderer.setExplicit(true);
         imageBuffer = Toolkit.getDefaultToolkit().createImage(mImageProducer);    
         if(thread.isInterrupted() || !thread.isAlive()){
@@ -67,6 +69,7 @@ public class Panel extends JPanel implements Runnable {
         for (int x=0;x<SigKeeper.SCREEN_WIDTH;x++) {
             for (int y=0;y<SigKeeper.SCREEN_HEIGHT;y++) {
                 pixel[y*SigKeeper.SCREEN_WIDTH+x]=0;
+                depthBuffer[y*SigKeeper.SCREEN_WIDTH+x]=0;
             }
         }
         //a=h/w
diff --git a/src/sig/RenderKernel.java b/src/sig/RenderKernel.java
index d2078bc..5bec47e 100644
--- a/src/sig/RenderKernel.java
+++ b/src/sig/RenderKernel.java
@@ -6,11 +6,13 @@ public class RenderKernel extends Kernel{
 
     int[] pixels;
     float[] tris;
+    float[] transformedTris;
+    float[] depthBuffer;
     int[] tex;
     int width,tex_width;
     int height,tex_height;
 
-    RenderKernel(int[] pixels,float[] tris,int[] tex,int width,int height,int tex_width,int tex_height) {
+    RenderKernel(int[] pixels,float[] tris,int[] tex,int width,int height,int tex_width,int tex_height,float[] depthBuffer) {
         this.pixels=pixels;
         this.tris=tris;
         this.width=width;
@@ -18,36 +20,41 @@ public class RenderKernel extends Kernel{
         this.tex=tex;
         this.tex_width=tex_width;
         this.tex_height=tex_height;
+        this.depthBuffer=depthBuffer;
+        this.transformedTris = new float[this.tris.length];
     }
 
     @Override
     public void run() {
+        for (int i=0;i<tris.length;i++) {
+            transformedTris[i]=tris[i];
+        }
         int id = getGlobalId();
-        float x1=tris[id*21+0];
-        float y1=tris[id*21+1];
-        float z1=tris[id*21+2];
-        float w1=tris[id*21+3];
-        float x2=tris[id*21+4];
-        float y2=tris[id*21+5];
-        float z2=tris[id*21+6];
-        float w2=tris[id*21+7];
-        float x3=tris[id*21+8];
-        float y3=tris[id*21+9];
-        float z3=tris[id*21+10];
-        float w3=tris[id*21+11];
-        float Tu1=tris[id*21+12];
-        float Tv1=tris[id*21+13];
-        float Tw1=tris[id*21+14];
-        float Uu2=tris[id*21+15];
-        float Uv2=tris[id*21+16];
-        float Uw2=tris[id*21+17];
-        float Vu3=tris[id*21+18];
-        float Vv3=tris[id*21+19];
-        float Vw3=tris[id*21+20];
+        float x1=transformedTris[id*21+0];
+        float y1=transformedTris[id*21+1];
+        float z1=transformedTris[id*21+2];
+        float w1=transformedTris[id*21+3];
+        float x2=transformedTris[id*21+4];
+        float y2=transformedTris[id*21+5];
+        float z2=transformedTris[id*21+6];
+        float w2=transformedTris[id*21+7];
+        float x3=transformedTris[id*21+8];
+        float y3=transformedTris[id*21+9];
+        float z3=transformedTris[id*21+10];
+        float w3=transformedTris[id*21+11];
+        float Tu=transformedTris[id*21+12];
+        float Tv=transformedTris[id*21+13];
+        float Tw=transformedTris[id*21+14];
+        float Uu=transformedTris[id*21+15];
+        float Uv=transformedTris[id*21+16];
+        float Uw=transformedTris[id*21+17];
+        float Vu=transformedTris[id*21+18];
+        float Vv=transformedTris[id*21+19];
+        float Vw=transformedTris[id*21+20];
         TexturedTriangle(
-            (int)x1,(int)y1,0f,0f,1f,
-            (int)x2,(int)y2,1f,0f,1f,
-            (int)x3,(int)y3,1f,1f,1f,
+            (int)x1,(int)y1,Tu,Tv,Tw,
+            (int)x2,(int)y2,Uu,Uv,Uw,
+            (int)x3,(int)y3,Vu,Vv,Vw,
             getGlobalId()%256,1f);
     }
 
diff --git a/src/sig/SigKeeper.java b/src/sig/SigKeeper.java
index 328a912..c6bab3a 100644
--- a/src/sig/SigKeeper.java
+++ b/src/sig/SigKeeper.java
@@ -33,6 +33,7 @@ public class SigKeeper implements WindowFocusListener,KeyListener,MouseListener,
     public final static long TIMEPERTICK = 16666667l;
     public static float DRAWTIME=0;
     public static float DRAWLOOPTIME=0;
+    public static int MAX_TRIANGLE_COUNT=100;
 
     public static Cursor invisibleCursor;