From f68067e101d596e59b39f94fafc39483f1c71233 Mon Sep 17 00:00:00 2001
From: Brian <brian@nostromo.localnet.net>
Date: Sun, 25 Feb 2007 17:24:40 -0700
Subject: add texture rotation

---
 progs/glsl/toyball.c | 25 ++++++++++++++++++++++++-
 1 file changed, 24 insertions(+), 1 deletion(-)

(limited to 'progs/glsl/toyball.c')

diff --git a/progs/glsl/toyball.c b/progs/glsl/toyball.c
index 2d3462fc61..cef52c04a6 100644
--- a/progs/glsl/toyball.c
+++ b/progs/glsl/toyball.c
@@ -51,10 +51,21 @@ static struct uniform_info Uniforms[] = {
 };
 
 static GLint win = 0;
-
+static GLboolean Anim = GL_FALSE;
+static GLfloat TexRot = 0.0;
 static GLfloat xRot = 0.0f, yRot = 0.0f, zRot = 0.0f;
 
 
+static void
+Idle(void)
+{
+   TexRot += 2.0;
+   if (TexRot > 360.0)
+      TexRot -= 360.0;
+   glutPostRedisplay();
+}
+
+
 static void
 Redisplay(void)
 {
@@ -65,6 +76,11 @@ Redisplay(void)
    glRotatef(yRot, 0.0f, 1.0f, 0.0f);
    glRotatef(zRot, 0.0f, 0.0f, 1.0f);
 
+   glMatrixMode(GL_TEXTURE);
+   glLoadIdentity();
+   glRotatef(TexRot, 0.0f, 1.0f, 0.0f);
+   glMatrixMode(GL_MODELVIEW);
+
    glutSolidSphere(2.0, 20, 10);
 
    glPopMatrix();
@@ -106,6 +122,13 @@ Key(unsigned char key, int x, int y)
   (void) y;
 
    switch(key) {
+   case 'a':
+      Anim = !Anim;
+      if (Anim)
+         glutIdleFunc(Idle);
+      else
+         glutIdleFunc(NULL);
+      break;
    case 'z':
       zRot += step;
       break;
-- 
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