Added interpolator(s)

Added std::array (from tr1)
More Groups

J.xcodeproj/project.pbxproj

@@ -14,6 +14,8 @@
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 		42681369140A321800CBF943 /* Foundation.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 42681368140A321800CBF943 /* Foundation.framework */; };
 		4268136F140A321800CBF943 /* J.mm in Sources */ = {isa = PBXBuildFile; fileRef = 4268136E140A321800CBF943 /* J.mm */; };
+		4283A45F14115AC400036A5D /* interpolator.h in Headers */ = {isa = PBXBuildFile; fileRef = 4283A45E14115AC300036A5D /* interpolator.h */; };
+		4283A4641411707700036A5D /* array.h in Headers */ = {isa = PBXBuildFile; fileRef = 4283A4631411707700036A5D /* array.h */; };
 		42ED6A6B140A380000402F76 /* fbo.h in Headers */ = {isa = PBXBuildFile; fileRef = 42ED6A68140A380000402F76 /* fbo.h */; };
 		42ED6A6C140A380000402F76 /* shader.h in Headers */ = {isa = PBXBuildFile; fileRef = 42ED6A69140A380000402F76 /* shader.h */; };
 		42ED6A6D140A380000402F76 /* to_string.h in Headers */ = {isa = PBXBuildFile; fileRef = 42ED6A6A140A380000402F76 /* to_string.h */; };
@@ -29,6 +31,8 @@
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 		4268136D140A321800CBF943 /* J.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = J.h; sourceTree = "<group>"; };
 		4268136E140A321800CBF943 /* J.mm */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.cpp.objcpp; path = J.mm; sourceTree = "<group>"; };
+		4283A45E14115AC300036A5D /* interpolator.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = interpolator.h; sourceTree = "<group>"; };
+		4283A4631411707700036A5D /* array.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = array.h; sourceTree = "<group>"; };
 		42ED6A68140A380000402F76 /* fbo.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = fbo.h; sourceTree = "<group>"; };
 		42ED6A69140A380000402F76 /* shader.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = shader.h; sourceTree = "<group>"; };
 		42ED6A6A140A380000402F76 /* to_string.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = to_string.h; sourceTree = "<group>"; };
@@ -51,6 +55,7 @@
 			isa = PBXGroup;
 			children = (
 				42ED6A6A140A380000402F76 /* to_string.h */,
+				4283A4631411707700036A5D /* array.h */,
 			);
 			name = std;
 			path = J;
@@ -87,11 +92,8 @@
 		4268136A140A321800CBF943 /* J */ = {
 			isa = PBXGroup;
 			children = (
-				425E9DF1140A74DA00A81A65 /* basic.h */,
+				4283A46114115AD400036A5D /* GL */,
-				425E9DF5140A774D00A81A65 /* basic.cpp */,
+				4283A46214116ECB00036A5D /* utils */,
-				42ED6A68140A380000402F76 /* fbo.h */,
-				425E9DF8140A7EB400A81A65 /* fbo.mm */,
-				42ED6A69140A380000402F76 /* shader.h */,
 				4268136D140A321800CBF943 /* J.h */,
 				4268136E140A321800CBF943 /* J.mm */,
 			);
@@ -107,6 +109,26 @@
 			path = J;
 			sourceTree = "<group>";
 		};
+		4283A46114115AD400036A5D /* GL */ = {
+			isa = PBXGroup;
+			children = (
+				425E9DF1140A74DA00A81A65 /* basic.h */,
+				425E9DF5140A774D00A81A65 /* basic.cpp */,
+				42ED6A68140A380000402F76 /* fbo.h */,
+				425E9DF8140A7EB400A81A65 /* fbo.mm */,
+				42ED6A69140A380000402F76 /* shader.h */,
+			);
+			name = GL;
+			sourceTree = "<group>";
+		};
+		4283A46214116ECB00036A5D /* utils */ = {
+			isa = PBXGroup;
+			children = (
+				4283A45E14115AC300036A5D /* interpolator.h */,
+			);
+			name = utils;
+			sourceTree = "<group>";
+		};
 /* End PBXGroup section */
 
 /* Begin PBXHeadersBuildPhase section */
@@ -119,6 +141,8 @@
 				42ED6A6C140A380000402F76 /* shader.h in Headers */,
 				42ED6A6D140A380000402F76 /* to_string.h in Headers */,
 				425E9DF2140A74DA00A81A65 /* basic.h in Headers */,
+				4283A45F14115AC400036A5D /* interpolator.h in Headers */,
+				4283A4641411707700036A5D /* array.h in Headers */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
@@ -225,6 +249,7 @@
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				DSTROOT = /tmp/J.dst;
+				GCC_DEBUGGING_SYMBOLS = full;
 				GCC_PRECOMPILE_PREFIX_HEADER = YES;
 				GCC_PREFIX_HEADER = "J/J-Prefix.pch";
 				OTHER_LDFLAGS = "-ObjC";
@@ -236,7 +261,9 @@
 		42681374140A321800CBF943 /* Release */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
+				COPY_PHASE_STRIP = NO;
 				DSTROOT = /tmp/J.dst;
+				GCC_DEBUGGING_SYMBOLS = full;
 				GCC_PRECOMPILE_PREFIX_HEADER = YES;
 				GCC_PREFIX_HEADER = "J/J-Prefix.pch";
 				OTHER_LDFLAGS = "-ObjC";

J/J.h

@@ -8,6 +8,10 @@
 
 #import <Foundation/Foundation.h>
 
+#import "to_string.h"
+#import "array.h"
+
 #import "shader.h"
 #import "fbo.h"
+#import "interpolator.h"
 

J/array.h

@@ -0,0 +1,18 @@
+//
+//  array.h
+//  J
+//
+//  Created by Joshua Moerman on 9/2/11.
+//  Copyright 2011 Vadovas. All rights reserved.
+//
+
+#ifndef J_array_h
+#define J_array_h
+
+#include <tr1/array>
+
+namespace std {
+	using tr1::array;
+}
+
+#endif

J/interpolator.h

@@ -0,0 +1,119 @@
+//
+//  interpolator.h
+//  J
+//
+//  Created by Joshua Moerman on 9/2/11.
+//  Copyright 2011 Vadovas. All rights reserved.
+//
+
+#ifndef J_interpolator_h
+#define J_interpolator_h
+
+#include <tr1/functional>
+
+namespace J {
+
+namespace interpolators {
+    struct linear{
+        template <typename T>
+		T operator()(T x){
+			return x;
+		}
+    };
+	
+    struct cubic_in_out{
+        template <typename T>
+		T operator()(T x){
+			return 3*x*x - 2*x*x*x;
+		}
+    };
+	
+    struct quintic_in_out{
+        template <typename T>
+		T operator()(T x){
+			return 6*x*x*x*x*x - 15*x*x*x*x + 10*x*x*x;
+			return x*x*x*(x*(x*6-15)+10);
+		}
+    };
+	
+	struct cosine_in_out{
+        template <typename T>
+		T operator()(T x){
+			return 0.5f - 0.5f*std::cos(x*M_PI);
+		}
+    };
+}
+
+template <typename T>
+class interpolator {
+
+    std::tr1::function<T (T)> ease_function;
+    
+    size_t length;
+    size_t steps;
+    
+    T value;
+    T begin_value;
+    T end_value;
+	
+public:
+    
+    interpolator(T begin_value_ = T(0), size_t length_ = 100) : 
+	  ease_function(interpolators::cubic_in_out())
+    , length(length_)
+    , steps(0)
+    , value(begin_value_)
+    , begin_value(begin_value_)
+    , end_value(begin_value_) {}
+	
+	template <typename F>
+    interpolator(T begin_value_, size_t length_, F ease_function_) : 
+	ease_function(ease_function_)
+    , length(length_)
+    , steps(0)
+    , value(begin_value_)
+    , begin_value(begin_value_)
+    , end_value(begin_value_) {}
+    
+    operator T&(){
+        return value;
+    }
+    
+    operator T const () const{
+        return value;
+    }
+    
+    void set_value(T new_value){
+        begin_value = value;
+		end_value = new_value;
+        steps = 0;
+    }
+	
+	void set_length(size_t new_length){
+        T ratio = (T) steps / (T) length;
+		length = new_length;
+		steps = ratio*length;
+	}
+	
+	template <typename F>
+	void set_ease_function(F new_ease_function){
+		ease_function = new_ease_function;
+	}
+    
+    void interpolate(){
+		if(steps >= length) return;
+        ++steps;
+        T ratio = (T) steps / (T) length;
+        ratio = ease_function(ratio);
+        value = (T(1) - ratio)*begin_value + ratio*end_value;
+    }
+    
+};
+	
+	struct foo{
+		foo(int){}
+	};
+	
+}	// namespace J
+
+#endif