From c016c613aa05270ba3a330b8cc2541d5aa936ac9 Mon Sep 17 00:00:00 2001
From: Joshua Sigona <sigonasr2@gmail.com>
Date: Wed, 3 Nov 2021 08:53:32 +0900
Subject: [PATCH] Fix missing rendered face with plane clipping.

---
 src/sig/Panel.java       |  5 ++++-
 src/sig/SigRenderer.java | 12 ++++++------
 src/sig/Triangle.java    |  5 ++---
 3 files changed, 12 insertions(+), 10 deletions(-)

diff --git a/src/sig/Panel.java b/src/sig/Panel.java
index b3069ea..2d90dc6 100644
--- a/src/sig/Panel.java
+++ b/src/sig/Panel.java
@@ -129,13 +129,16 @@ public class Panel extends JPanel implements Runnable {
                 triViewed.A = Matrix.MultiplyVector(matView,triTransformed.A);
                 triViewed.B = Matrix.MultiplyVector(matView,triTransformed.B);
                 triViewed.C = Matrix.MultiplyVector(matView,triTransformed.C);
-                triProjected.setColor(new Color(dp,dp,dp));
+                triViewed.setColor(new Color(dp,dp,dp));
 
                 int clippedTriangles = 0;
                 Triangle[] clipped = new Triangle[]{new Triangle(),new Triangle()};
 
                 clippedTriangles = Triangle.ClipAgainstPlane(new Vector(0,0,1),new Vector(0,0,1), triViewed, clipped);
                 for (int i=0;i<clippedTriangles;i++) {
+                    if (i>0) {
+                        triProjected = new Triangle();
+                    }
                     triProjected.A = Matrix.MultiplyVector(SigRenderer.matProj,clipped[i].A);
                     triProjected.B = Matrix.MultiplyVector(SigRenderer.matProj,clipped[i].B);
                     triProjected.C = Matrix.MultiplyVector(SigRenderer.matProj,clipped[i].C);
diff --git a/src/sig/SigRenderer.java b/src/sig/SigRenderer.java
index 40dab7d..f422d57 100644
--- a/src/sig/SigRenderer.java
+++ b/src/sig/SigRenderer.java
@@ -14,7 +14,7 @@ import java.awt.BorderLayout;
 
 public class SigRenderer implements KeyListener,MouseListener,MouseMotionListener{
 
-    public static boolean WIREFRAME = true;
+    public static boolean WIREFRAME = false;
 
     public static Mesh cube;
     public static int SCREEN_WIDTH=1280;
@@ -45,16 +45,16 @@ public class SigRenderer implements KeyListener,MouseListener,MouseMotionListene
 
     public void runGameLoop() {
         if (upHeld) {
-            vCamera.y-=MOVESPEED;
+            vCamera.y+=MOVESPEED;
         }
         if (downHeld) {
-            vCamera.y+=MOVESPEED;
+            vCamera.y-=MOVESPEED;
         }
         if (rightHeld) {
-            vCamera.x+=MOVESPEED;
+            vCamera.x-=MOVESPEED;
         }
         if (leftHeld) {
-            vCamera.x-=MOVESPEED;
+            vCamera.x+=MOVESPEED;
         }
         if (wHeld||sHeld) {
             Vector forward = Vector.multiply(vLookDir,MOVESPEED);
@@ -74,7 +74,7 @@ public class SigRenderer implements KeyListener,MouseListener,MouseMotionListene
     }
 
     SigRenderer(JFrame f) {
-        cube = new Mesh(OBJReader.ReadOBJFile("axis.obj"));
+        cube = new Mesh(OBJReader.ReadOBJFile("teapot.obj"));
 
         Panel p = new Panel();
 
diff --git a/src/sig/Triangle.java b/src/sig/Triangle.java
index 0c85534..bebe7ec 100644
--- a/src/sig/Triangle.java
+++ b/src/sig/Triangle.java
@@ -68,15 +68,14 @@ public class Triangle {
             return 1;
         } else
         if (insidePointCount==1&&outsidePointCount==2) {
-            out_tri[0].col = Color.BLUE;
+            out_tri[0].col = in.col;
             out_tri[0].A = inside_points[0];
             out_tri[0].B = Vector.IntersectPlane(plane_p, plane_n, inside_points[0], outside_points[0]);
             out_tri[0].C = Vector.IntersectPlane(plane_p, plane_n, inside_points[0], outside_points[1]);
             return 1;
         } else
         if (insidePointCount==2&&outsidePointCount==1) {
-            out_tri[0].col=Color.RED;
-            out_tri[1].col=Color.GREEN;
+            out_tri[0].col=out_tri[1].col=in.col;
             out_tri[0].A = inside_points[0];
             out_tri[0].B = inside_points[1];
             out_tri[0].C = Vector.IntersectPlane(plane_p, plane_n, inside_points[0], outside_points[0]);