Draw more instances of the model.

1 files changed, 10 insertions, 7 deletions

diff --git a/glass.c b/glass.c
index e536df2..3bb1e30 100644
--- a/glass.c
+++ b/glass.c
@@ -177,6 +177,10 @@ do_ring_drawelements(void)
 static void
 install_transform(int instance)
 {
+	int x_index = (instance / 3) / 3 - 1;
+	int y_index = (instance / 3) % 3 - 1;
+	int z_index = instance % 3;
+
 	glMatrixMode(GL_MODELVIEW);
 	glLoadIdentity();
 
@@ -184,18 +188,17 @@ install_transform(int instance)
 	/* Translate for eye location. */
 	glTranslatef(-eye_world[0], -eye_world[1], -eye_world[2]);
 
-	switch (instance) {
+	/* Move some of them left/right. */
+	glTranslatef(x_index * 8.0, y_index * 6.0, z_index * -6.0);
+
+	switch (z_index) {
 	case 0:
 		break;
 	case 1:
-		/* Move it back a bit. */
-		glTranslatef(0, 0, -6);
 		/* Turn it a little on the X axis. */
 		glRotatef(45, 1, 0, 0);
 		break;
 	case 2:
-		/* Move it back a farther. */
-		glTranslatef(0, 0, -12);
 		/* Turn it a little the other way on the X axis. */
 		glRotatef(-45, 1, 0, 0);
 		break;
@@ -216,7 +219,7 @@ install_transform(int instance)
 static void
 draw(void)
 {
-	int i, j, instance;
+	int instance;
 
 	glClearColor(0.0, 0.0, 0.8, 0.0);
 	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
@@ -248,7 +251,7 @@ draw(void)
 
 	glViewport(0, 0, win_width, win_height);
 
-	for (instance = 0; instance < 3; instance++) {
+	for (instance = 0; instance < 27; instance++) {
 		install_transform(instance);
 		do_ring_drawelements();
 	}