X-Git-Url: https://git.dogcows.com/gitweb?p=chaz%2Fyoink;a=blobdiff_plain;f=src%2FMoof%2FTexture.hh;h=41add2bca92638f135dc1b58abea615cb32f3d72;hp=4e311ea53a05f75689b0e7b2c31dfedf4b573135;hb=e973a129b5b83b628ba3f09e8c95682fc74080cd;hpb=4f9eb9259092994de9690cf12f11437c35a6791e

diff --git a/src/Moof/Texture.hh b/src/Moof/Texture.hh
index 4e311ea..41add2b 100644
--- a/src/Moof/Texture.hh
+++ b/src/Moof/Texture.hh
@@ -36,8 +36,8 @@
 
 #include <boost/shared_ptr.hpp>
 
+#include <Moof/Image.hh>
 #include <Moof/OpenGL.hh>
-#include <Moof/Resource.hh>
 
 
 namespace Mf {
@@ -47,10 +47,26 @@ class Texture;
 typedef boost::shared_ptr<Texture> TextureP;
 
 
-class Texture : public Resource
+class Texture : public Image
 {
 public:
 
+	/**
+	 * Possible orientations for texture coordinates.
+	 */
+
+	typedef unsigned TileIndex;
+	static const TileIndex NO_TILE = -1;
+
+	typedef enum
+	{
+		NORMAL =			0,			///< Normal orientation.
+		FLIP =				1,			///< Flip over a horizontal axis.
+		REVERSE =			2,			///< Flip over a vertical axis.
+		FLIP_AND_REVERSE =	3			///< Flip over both.
+	} Orientation;
+
+
 	static TextureP alloc(const std::string& name)
 	{
 		return TextureP(new Texture(name));
@@ -63,14 +79,38 @@ public:
 
 	static void resetBind();
 
-	unsigned getWidth() const;
-	unsigned getHeight() const;
-
 	void setMinFilter(GLuint filter);
 	void setMagFilter(GLuint filter);
 	void setWrapS(GLuint wrap);
 	void setWrapT(GLuint wrap);
 
+
+	/**
+	 * Calculate texture coordinates for a tile at a certain index.  Tiles are
+	 * indexed start with zero as the to-left tile and moving across, then down.
+	 * @param index The tile index.
+	 * @param coords An array of scalars where the texture coordinates will be
+	 * stored after this call.  The first coordinate (u,v) will be in the first
+	 * two places and so on until all four coordinates are stored, therefore
+	 * requiring enough room for an array of eight scalars.  The winding of the
+	 * coordinates is always counter-clockwise (the GL default).
+	 * @return True if index is valid, false otherwise.
+	 */
+
+	bool getTileCoords(TileIndex index, Scalar coords[8]) const;
+
+
+	/**
+	 * This version let's you specify an orientation that will be reflected in
+	 * the texture coordinates.  This allows you to easily map a texture
+	 * backwards or upside-down.
+	 * @param what The orientation; can be flip, reverse, or flip_and_reverse.
+	 * @return True if index is valid, false otherwise.
+	 */
+
+	bool getTileCoords(TileIndex index, Scalar coords[8], Orientation what) const;
+
+
 	static std::string getPath(const std::string& name);
 
 private: