...

amalgamate.py

@@ -9,7 +9,7 @@ pipeline = [
 	["common.h", "memory.h", "vector.h", "str.h", "tuplelist.h", "namedict.h", "error.h", "lexer.h"],
 	["obj.h", "codeobject.h", "frame.h"],
 	["gc.h", "vm.h", "ceval.h", "expr.h", "compiler.h", "repl.h"],
-	["_generated.h", "iter.h", "base64.h", "cffi.h", "linalg.h", "requests.h", "io.h", "pocketpy.h"]
+	["_generated.h", "iter.h", "base64.h", "cffi.h", "linalg.h", "easing.h", "requests.h", "io.h", "pocketpy.h"]
 ]
 
 copied = set()
@@ -68,6 +68,7 @@ print("amalgamated/pocketpy.h")
 # my custom things...
 if os.path.exists("/mnt/e/PainterEngine/project/pocketpy.h"):
 	shutil.copy("amalgamated/pocketpy.h", "/mnt/e/PainterEngine/project/pocketpy.h")
+	shutil.copy("src/easing.pyi", "/mnt/e/PainterEngine/game/easing.pyi")
 	shutil.copy("src/linalg.pyi", "/mnt/e/PainterEngine/game/linalg.pyi")
 
 

src/easing.h

@@ -0,0 +1,257 @@
+#pragma once
+
+#include <cmath>
+#include "cffi.h"
+
+namespace pkpy{
+
+// https://easings.net/
+
+static const double PI = 3.1415926545;
+
+inline static double easeLinear( double x ) {
+    return x;
+}
+
+inline static double easeInSine( double x ) {
+    return 1.0 - std::cos( x * PI / 2 );
+}
+
+inline static double easeOutSine( double x ) {
+	return std::sin( x * PI / 2 );
+}
+
+inline static double easeInOutSine( double x ) {
+	return -( std::cos( PI * x ) - 1 ) / 2;
+}
+
+inline static double easeInQuad( double x ) {
+    return x * x;
+}
+
+inline static double easeOutQuad( double x ) {
+    return 1 - std::pow( 1 - x, 2 );
+}
+
+inline static double easeInOutQuad( double x ) {
+    if( x < 0.5 ) {
+        return 2 * x * x;
+    } else {
+        return 1 - std::pow( -2 * x + 2, 2 ) / 2;
+    }
+}
+
+inline static double easeInCubic( double x ) {
+    return x * x * x;
+}
+
+inline static double easeOutCubic( double x ) {
+    return 1 - std::pow( 1 - x, 3 );
+}
+
+inline static double easeInOutCubic( double x ) {
+    if( x < 0.5 ) {
+        return 4 * x * x * x;
+    } else {
+        return 1 - std::pow( -2 * x + 2, 3 ) / 2;
+    }
+}
+
+inline static double easeInQuart( double x ) {
+    return std::pow( x, 4 );
+}
+
+inline static double easeOutQuart( double x ) {
+    return 1 - std::pow( 1 - x, 4 );
+}
+
+inline static double easeInOutQuart( double x ) {
+    if( x < 0.5 ) {
+        return 8 * std::pow( x, 4 );
+    } else {
+        return 1 - std::pow( -2 * x + 2, 4 ) / 2;
+    }
+}
+
+inline static double easeInQuint( double x ) {
+    return std::pow( x, 5 );
+}
+
+inline static double easeOutQuint( double x ) {
+    return 1 - std::pow( 1 - x, 5 );
+}
+
+inline static double easeInOutQuint( double x ) {
+    if( x < 0.5 ) {
+        return 16 * std::pow( x, 5 );
+    } else {
+        return 1 - std::pow( -2 * x + 2, 5 ) / 2;
+    }
+}
+
+inline static double easeInExpo( double x ) {
+    return x == 0 ? 0 : std::pow( 2, 10 * x - 10 );
+}
+
+inline static double easeOutExpo( double x ) {
+    return x == 1 ? 1 : 1 - std::pow( 2, -10 * x );
+}
+
+inline double easeInOutExpo( double x ) {
+    if( x == 0 ) {
+        return 0;
+    } else if( x == 1 ) {
+        return 1;
+    } else if( x < 0.5 ) {
+        return std::pow( 2, 20 * x - 10 ) / 2;
+    } else {
+        return (2 - std::pow( 2, -20 * x + 10 )) / 2;
+    }
+}
+
+inline static double easeInCirc( double x ) {
+    return 1 - std::sqrt( 1 - std::pow( x, 2 ) );
+}
+
+inline static double easeOutCirc( double x ) {
+    return std::sqrt( 1 - std::pow( x - 1, 2 ) );
+}
+
+inline static double easeInOutCirc( double x ) {
+    if( x < 0.5 ) {
+        return (1 - std::sqrt( 1 - std::pow( 2 * x, 2 ) )) / 2;
+    } else {
+        return (std::sqrt( 1 - std::pow( -2 * x + 2, 2 ) ) + 1) / 2;
+    }
+}
+
+inline static double easeInBack( double x ) {
+    const double c1 = 1.70158;
+    const double c3 = c1 + 1;
+    return c3 * x * x * x - c1 * x * x;
+}
+
+inline static double easeOutBack( double x ) {
+    const double c1 = 1.70158;
+    const double c3 = c1 + 1;
+    return 1 + c3 * std::pow( x - 1, 3 ) + c1 * std::pow( x - 1, 2 );
+}
+
+inline static double easeInOutBack( double x ) {
+    const double c1 = 1.70158;
+    const double c2 = c1 * 1.525;
+    if( x < 0.5 ) {
+        return (std::pow( 2 * x, 2 ) * ((c2 + 1) * 2 * x - c2)) / 2;
+    } else {
+        return (std::pow( 2 * x - 2, 2 ) * ((c2 + 1) * (x * 2 - 2) + c2) + 2) / 2;
+    }
+}
+
+inline static double easeInElastic( double x ) {
+    const double c4 = (2 * PI) / 3;
+    if( x == 0 ) {
+        return 0;
+    } else if( x == 1 ) {
+        return 1;
+    } else {
+        return -std::pow( 2, 10 * x - 10 ) * std::sin( (x * 10 - 10.75) * c4 );
+    }
+}
+
+inline static double easeOutElastic( double x ) {
+    const double c4 = (2 * PI) / 3;
+    if( x == 0 ) {
+        return 0;
+    } else if( x == 1 ) {
+        return 1;
+    } else {
+        return std::pow( 2, -10 * x ) * std::sin( (x * 10 - 0.75) * c4 ) + 1;
+    }
+}
+
+inline double easeInOutElastic( double x ) {
+    const double c5 = (2 * PI) / 4.5;
+    if( x == 0 ) {
+        return 0;
+    } else if( x == 1 ) {
+        return 1;
+    } else if( x < 0.5 ) {
+        return -(std::pow( 2, 20 * x - 10 ) * std::sin( (20 * x - 11.125) * c5 )) / 2;
+    } else {
+        return (std::pow( 2, -20 * x + 10 ) * std::sin( (20 * x - 11.125) * c5 )) / 2 + 1;
+    }
+}
+
+inline static double easeOutBounce( double x ) {
+    const double n1 = 7.5625;
+    const double d1 = 2.75;
+    if( x < 1 / d1 ) {
+        return n1 * x * x;
+    } else if( x < 2 / d1 ) {
+        x -= 1.5 / d1;
+        return n1 * x * x + 0.75;
+    } else if( x < 2.5 / d1 ) {
+        x -= 2.25 / d1;
+        return n1 * x * x + 0.9375;
+    } else {
+        x -= 2.625 / d1;
+        return n1 * x * x + 0.984375;
+    }
+}
+
+inline double easeInBounce( double x ) {
+    return 1 - easeOutBounce(1 - x);
+}
+
+inline static double easeInOutBounce( double x ) {
+    return x < 0.5
+    ? (1 - easeOutBounce(1 - 2 * x)) / 2
+    : (1 + easeOutBounce(2 * x - 1)) / 2;
+}
+
+inline void add_module_easing(VM* vm){
+    PyObject* mod = vm->new_module("easing");
+
+#define EASE(name)  \
+    vm->bind_func<1>(mod, "Ease"#name, [](VM* vm, ArgsView args){  \
+        f64 t = CAST(f64, args[0]); \
+        return VAR(ease##name(t));   \
+    });
+
+    EASE(Linear)
+    EASE(InSine)
+    EASE(OutSine)
+    EASE(InOutSine)
+    EASE(InQuad)
+    EASE(OutQuad)
+    EASE(InOutQuad)
+    EASE(InCubic)
+    EASE(OutCubic)
+    EASE(InOutCubic)
+    EASE(InQuart)
+    EASE(OutQuart)
+    EASE(InOutQuart)
+    EASE(InQuint)
+    EASE(OutQuint)
+    EASE(InOutQuint)
+    EASE(InExpo)
+    EASE(OutExpo)
+    EASE(InOutExpo)
+    EASE(InCirc)
+    EASE(OutCirc)
+    EASE(InOutCirc)
+    EASE(InBack)
+    EASE(OutBack)
+    EASE(InOutBack)
+    EASE(InElastic)
+    EASE(OutElastic)
+    EASE(InOutElastic)
+    EASE(InBounce)
+    EASE(OutBounce)
+    EASE(InOutBounce)
+
+#undef EASE
+}
+
+
+} // namespace pkpy

src/easing.pyi

@@ -0,0 +1,31 @@
+def EaseLinear(x: float) -> float: ...
+def EaseInSine(x: float) -> float: ...
+def EaseOutSine(x: float) -> float: ...
+def EaseInOutSine(x: float) -> float: ...
+def EaseInQuad(x: float) -> float: ...
+def EaseOutQuad(x: float) -> float: ...
+def EaseInOutQuad(x: float) -> float: ...
+def EaseInCubic(x: float) -> float: ...
+def EaseOutCubic(x: float) -> float: ...
+def EaseInOutCubic(x: float) -> float: ...
+def EaseInQuart(x: float) -> float: ...
+def EaseOutQuart(x: float) -> float: ...
+def EaseInOutQuart(x: float) -> float: ...
+def EaseInQuint(x: float) -> float: ...
+def EaseOutQuint(x: float) -> float: ...
+def EaseInOutQuint(x: float) -> float: ...
+def EaseInExpo(x: float) -> float: ...
+def EaseOutExpo(x: float) -> float: ...
+def EaseInOutExpo(x: float) -> float: ...
+def EaseInCirc(x: float) -> float: ...
+def EaseOutCirc(x: float) -> float: ...
+def EaseInOutCirc(x: float) -> float: ...
+def EaseInBack(x: float) -> float: ...
+def EaseOutBack(x: float) -> float: ...
+def EaseInOutBack(x: float) -> float: ...
+def EaseInElastic(x: float) -> float: ...
+def EaseOutElastic(x: float) -> float: ...
+def EaseInOutElastic(x: float) -> float: ...
+def EaseInBounce(x: float) -> float: ...
+def EaseOutBounce(x: float) -> float: ...
+def EaseInOutBounce(x: float) -> float: ...

src/pocketpy.h

@@ -8,6 +8,7 @@
 #include "base64.h"
 #include "cffi.h"
 #include "linalg.h"
+#include "easing.h"
 #include "requests.h"
 #include "io.h"
 #include "_generated.h"
@@ -1054,6 +1055,7 @@ inline void VM::post_init(){
     }
 
     add_module_linalg(this);
+    add_module_easing(this);
 #endif
 }