From 4c3b95678702ccb41e7ba720579a35fff8b6550b Mon Sep 17 00:00:00 2001
From: hodasemi <michaelh.95@t-online.de>
Date: Fri, 31 May 2019 14:42:02 +0200
Subject: [PATCH] Fix cube rendering

---
 exercise3/src/cube_system.cpp | 20 +++++++++++---------
 1 file changed, 11 insertions(+), 9 deletions(-)

diff --git a/exercise3/src/cube_system.cpp b/exercise3/src/cube_system.cpp
index 280bd65..610fb86 100644
--- a/exercise3/src/cube_system.cpp
+++ b/exercise3/src/cube_system.cpp
@@ -80,6 +80,7 @@ void render_cube_face(
 	const double p2[3],
 	const double p3[3])
 {
+	glColor3dv(color);
 	glVertex3dv(p0);
 	glColor3dv(color);
 	glVertex3dv(p1);
@@ -91,7 +92,6 @@ void render_cube_face(
 	glVertex3dv(p3);
 	glColor3dv(color);
 	glVertex3dv(p0);
-	glColor3dv(color);
 }
 
 // Render one single cube
@@ -125,14 +125,14 @@ void cube_system::render_cube()
 	*/
 
 	const double vertices[8][3] = {
-		{-1.0, -1.0,  1.0},
-		{ 1.0, -1.0,  1.0},
-		{ 1.0,  1.0,  1.0},
-		{-1.0,  1.0,  1.0},
-		{-1.0, -1.0, -1.0},
-		{ 1.0, -1.0, -1.0},
-		{ 1.0,  1.0, -1.0},
-		{-1.0,  1.0, -1.0}
+		{-1.0, -1.0,  1.0}, // 1
+		{ 1.0, -1.0,  1.0}, // 2
+		{ 1.0,  1.0,  1.0}, // 3
+		{-1.0,  1.0,  1.0}, // 4
+		{-1.0, -1.0, -1.0}, // 5
+		{ 1.0, -1.0, -1.0}, // 6
+		{ 1.0,  1.0, -1.0}, // 7
+		{-1.0,  1.0, -1.0}  // 8
 	};
 
 	const double colors[6][3] = {
@@ -144,12 +144,14 @@ void cube_system::render_cube()
 		{0.0, 1.0, 1.0},
 	};
 
+	glBegin(GL_TRIANGLES);
 	render_cube_face(colors[0], vertices[0], vertices[1], vertices[2], vertices[3]);
 	render_cube_face(colors[1], vertices[1], vertices[5], vertices[6], vertices[2]);
 	render_cube_face(colors[2], vertices[5], vertices[4], vertices[7], vertices[6]);
 	render_cube_face(colors[3], vertices[4], vertices[0], vertices[3], vertices[7]);
 	render_cube_face(colors[4], vertices[4], vertices[5], vertices[1], vertices[0]);
 	render_cube_face(colors[5], vertices[6], vertices[7], vertices[3], vertices[2]);
+	glEnd();
 
 }