[Performous-commit] Tapio Vierros : Some glutils from master.

[Tapio V. <aa...@us...>]

Module: performous
Branch: dance
Commit: e9884d335a59398485b40d997b1fb0a5b6a74d71

Author: Tapio Vierros <tap...@gm...>
Date:   Thu Dec 10 00:33:24 2009 +0200

Some glutils from master.

---

 game/glutil.hh |   27 +++++++++++++++++++++++++++
 1 files changed, 27 insertions(+), 0 deletions(-)

diff --git a/game/glutil.hh b/game/glutil.hh
index ad7f309..2d20d83 100644
--- a/game/glutil.hh
+++ b/game/glutil.hh
@@ -56,6 +56,33 @@ namespace glutil {
 		}
 	};
 
+	/// auto-reversing translation
+	struct Translation {
+		Translation(float _x, float _y, float _z = 0.0f): m_x(_x), m_y(_y), m_z(_z) 
+		  { glTranslatef(m_x, m_y, m_z); }
+		~Translation() { glTranslatef(-m_x, -m_y, -m_z); }
+	  private:
+		float m_x, m_y, m_z;
+	};
+
+	/// auto-reversing rotation
+	struct Rotation {
+		Rotation(float _a, float _x, float _y, float _z): m_a(_a), m_x(_x), m_y(_y), m_z(_z) 
+		  { glRotatef(m_a, m_x, m_y, m_z); }
+		~Rotation() { glRotatef(-m_a, m_x, m_y, m_z); }
+	  private:
+		float m_a, m_x, m_y, m_z;
+	};
+
+	/// auto-reversing scaling
+	struct Scale {
+		Scale(float _x, float _y, float _z): m_x(_x), m_y(_y), m_z(_z) 
+		  { glScalef(m_x, m_y, m_z); }
+		~Scale() { glScalef(1.0/m_x, 1.0/m_y, 1.0/m_z); }
+	  private:
+		float m_x, m_y, m_z;
+	};
+
 	/// struct to store color information
 	struct Color {
 		float r, ///< red component