From 8165a5c76019a7bdf95f799279f0d6577856f842 Mon Sep 17 00:00:00 2001
From: InventorXtreme <inventorxtreme@gmail.com>
Date: Tue, 12 Mar 2024 16:25:24 -0400
Subject: [PATCH] fixxed missing pixels

---
 c3d.c | 41 ++++++++++++++++++++++++++---------------
 1 file changed, 26 insertions(+), 15 deletions(-)

diff --git a/c3d.c b/c3d.c
index 442685d..3362327 100644
--- a/c3d.c
+++ b/c3d.c
@@ -128,7 +128,7 @@ void DrawScanline(Zee *zee, Tri2D *trianglepointer, double start, double end, in
     float f1depth2 = DepthAtBary(trianglepointer, f1baryatpoint2);
     float dslope = f1depth2 - f1depth;
 
-    for (int i = Max(start, 0); i <  Min(end, RENDERWIDTH); i++) {
+    for (int i = floor(Max(start, 0)); i <=  ceil(Min(end, RENDERWIDTH)); i++) {
         /* zee[IndexOfZBuff(i, scanline)].triangle = tp; */
 
         /* Vector3 baryatpoint = Tri2DBaryAtPoint(tp, (Vector2){i, scanline}); */
@@ -167,9 +167,10 @@ void FillTopFlatZbuffer(Zee *zee, Tri2D *t, Tri2D *tp) {
     int scanbottom = t->c.y;
     int scantop = Max(t->a.y, 0);
 
-    for (int scanline = scanbottom; scanline >= scantop; scanline--) {
-        if (0 <= scanline && scanline < RENDERHEIGHT) {
 
+    for (float scanline = scanbottom; scanline >= scantop; scanline--) {
+        if (0 <= scanline && scanline < RENDERHEIGHT) {
+			//tp->color = RED;
             DrawScanline(zee, tp, curx1, curx2, scanline);
         }
         curx1 -= atocslopeinv; // subtract because we are working backwards (reason
@@ -206,13 +207,16 @@ void FillBottomFlatZbuffer(Zee *zee, Tri2D *t, Tri2D *tp) {
     int scantop = t->a.y; // start must always be the true beging of the triangle, otherwise
                           // everything will be offset
     int scanbottom =
-        Min(t->c.y, RENDERHEIGHT); // we can stop rendering as soon as it goes off screen
+        Min(t->c.y, RENDERHEIGHT-1); // we can stop rendering as soon as it goes off screen
 
-    for (int scanline = scantop; scanline < scanbottom;
+	
+    for (int scanline = scantop; scanline <= scanbottom;
          scanline++) { // TODO: Possibly more optimization possible here, use linear correspondance
                        // for y, not just x to get depth
         if (0 <= scanline && scanline < RENDERHEIGHT) {
-            DrawScanline(zee, tp, curx1, curx2, scanline);
+			Tri2D nt = *tp;
+			nt.color = RED;
+            DrawScanline(zee, &nt, curx1, curx2, scanline);
         }
         curx1 += atobslopeinv;
         curx2 += atocslopeinv;
@@ -427,11 +431,11 @@ int main() {
     TriArray tarr;
     tarr.arr = internaltriarray;
     tarr.length = 0;
-    TriArrayAppend(&tarr, (Tri){(Vector3){0, 0, -1000}, (Vector3){0, 800, -1000},
-                                (Vector3){800, 800, -1000}, WHITE});
+    /* TriArrayAppend(&tarr, (Tri){(Vector3){0, 0, -1000}, (Vector3){0, 800, -1000}, */
+    /*                             (Vector3){800, 800, -1000}, WHITE}); */
 
-    TriArrayAppend(&tarr, (Tri){(Vector3){0, 0, -2000}, (Vector3){0, 800, -2000},
-                                (Vector3){800, 800, -2000}, BLUE});
+    /* TriArrayAppend(&tarr, (Tri){(Vector3){0, 0, -2000}, (Vector3){0, 800, -2000}, */
+    /*                             (Vector3){800, 800, -2000}, BLUE}); */
 
     static Tri internaltransformedtriarray[50000];
     TriArray TransformedTris;
@@ -450,7 +454,7 @@ int main() {
     memset(display, 0, sizeof(display));
 
     Tri2D funners =
-        (Tri2D){(Vector2){50, 50}, (Vector2){500, 50}, (Vector2){500, 500}, 0, 0, 0, GREEN};
+        (Tri2D){(Vector2){0, 0}, (Vector2){500, 0}, (Vector2){500, 500}, -1000, -1000, -1000, GREEN};
     Tri2D funners2 =
         (Tri2D){(Vector2){600, 0}, (Vector2){600, 500}, (Vector2){1000, 500}, 0, 0, 0, RED};
 
@@ -464,11 +468,17 @@ int main() {
     Tri2D norm = (Tri2D){(Vector2){500, 50}, (Vector2){0, 0}, (Vector2){250, 500}, 0, 0, 0, GREEN};
 
     bool run3d = true;
-    Object3D t = ReadObjectFromFile("teapot.obj");
+
+	if (true) {
+    Object3D t = ReadObjectFromFile("cube.obj");
     for (int i = 0; i < t.triangles->length; i++) {
         // printf("t: %f\n", t.triangles->arr[i].a.x);
         TriArrayAppend(&tarr, t.triangles->arr[i]);
     }
+
+	}
+
+
     while (!WindowShouldClose() && run3d) {
         float frametime = GetFrameTime();
         CtrlLocalCam(&camera, frametime);
@@ -502,11 +512,12 @@ int main() {
 
 		if (IsKeyDown(KEY_H)) {
 			if (ZBuff[IndexOfZBuff(RENDERWIDTH/2, RENDERHEIGHT/2 )].tri != 0) {
-			ZBuff[IndexOfZBuff(RENDERWIDTH/2, RENDERHEIGHT/2)].tri->color = RED;
+				//ZBuff[IndexOfZBuff(RENDERWIDTH/2, RENDERHEIGHT/2)].tri->color = RED;
+				printf("%f\n", ZBuff[IndexOfZBuff(RENDERWIDTH/2, RENDERHEIGHT/2)].tri->a.x);
 			}
 		}
 
-        // FillTopFlatZbuffer(ZBuff, &funners);
+		//FillTopFlatZbuffer(ZBuff, &funners, &funners);
         // FillBottomFlatZbuffer(ZBuff,&funners2);
 
         // FillTopFlatZbuffer(ZBuff, &fullscreentritop);
@@ -519,7 +530,7 @@ int main() {
         for (int y = 0; y < RENDERHEIGHT; y++) {
             for (int x = 0; x < RENDERWIDTH; x++) {
 
-
+				//REMOVE THE IF AND REPALCE THE VALUE THAT DISPLAY IS SET TO WITH DIRECT COLOR WHEN DONE DEBUGGING
 				if (ZBuff[IndexOfZBuff(x, y)].tri != 0) {
                 display[index] = ZBuff[IndexOfZBuff(x, y)].tri->color;
 				}