From a550f267df36f4f134dd4940d3ee7a7cac01f5e7 Mon Sep 17 00:00:00 2001
From: Joscha <brummer@migejolise.de>
Date: Sun, 7 May 2017 19:02:33 +0000
Subject: [PATCH] Reorganize Gene code

---
 Makefile      |   2 +-
 src/Genes.cpp | 142 ++++++++++++++++++++++++++++++++++++++++++++++++++
 src/Genes.hpp |  62 ++++++++++++++++++++++
 3 files changed, 205 insertions(+), 1 deletion(-)
 create mode 100644 src/Genes.cpp
 create mode 100644 src/Genes.hpp

diff --git a/Makefile b/Makefile
index d355957..1cd822d 100644
--- a/Makefile
+++ b/Makefile
@@ -10,7 +10,7 @@ SRCDIR = src
 TMPDIR = build
 TARGET = gross
 #FILES = Chromosome Fitness Generation main
-FILES = Chromosome Fitness Generation main
+FILES = Genes
 
 #SOURCES = $(patsubst %,$(SRCDIR)/%.cpp,$(FILES))
 OBJECTS = $(patsubst %,$(TMPDIR)/%.o,$(FILES))
diff --git a/src/Genes.cpp b/src/Genes.cpp
new file mode 100644
index 0000000..5deefcd
--- /dev/null
+++ b/src/Genes.cpp
@@ -0,0 +1,142 @@
+#include "Genes.hpp"
+
+#include <algorithm>
+
+#if __GNUC__ < 7 // gcc 7 will support clamp
+namespace std {
+	template<typename T>
+	T clamp(T v, T lo, T hi)
+	{
+		return std::min(hi, std::max(lo, v));
+	}
+}
+#endif
+
+
+
+// Common to all genes
+std::minstd_rand* Gene::re;
+sf::Vector2f Gene::size;
+
+
+Gene::~Gene()
+{
+}
+
+
+
+// GeneCircle
+sf::CircleShape GeneCircle::circle(0, 36);
+float GeneCircle::stddev_position = .1;  // in percent of min side length
+float GeneCircle::stddev_radius = .1;    // in percent of max radius
+float GeneCircle::stddev_color = 20;     // absolute value
+
+
+GeneCircle::~GeneCircle()
+{
+}
+
+
+void GeneCircle::draw(sf::RenderTarget& target, sf::RenderStates states) const
+{
+	this->circle.setPosition(this->position);
+	this->circle.setRadius(this->radius);
+	this->circle.setFillColor(this->color);
+	target.draw(this->circle, states);
+}
+
+
+void GeneCircle::randomize()
+{
+}
+
+
+void GeneCircle::mutate()
+{
+	std::uniform_int_distribution<> choicedist(0, 2);
+	
+	switch (choicedist(*Gene::re)) {
+		case 0:
+			this->mutatePosition();
+			break;
+		case 1:
+			this->mutateRadius();
+			break;
+		case 2:
+			this->mutateColor();
+			break;
+	}
+}
+
+
+void GeneCircle::mutatePosition()
+{
+	std::normal_distribution<> posdist(0, GeneCircle::stddev_position);
+	float min_side = std::min(Gene::size.x, Gene::size.y);
+	
+	this->position.x = std::clamp<float>(
+		this->position.x + posdist(*Gene::re)*min_side,
+		0,
+		Gene::size.x
+	);
+	
+	this->position.y = std::clamp<float>(
+		this->position.y + posdist(*Gene::re)*min_side,
+		0,
+		Gene::size.y
+	);
+}
+
+
+void GeneCircle::mutateRadius()
+{
+	std::normal_distribution<> raddist(0, GeneCircle::stddev_radius);
+	float max_radius = this->maxRadius();
+	
+	this->radius = std::clamp<float>(
+// 		gene.radius + pow(raddist(*Gene::re)*sqrt(max_radius), 2),
+		this->radius + raddist(*Gene::re)*max_radius,
+		0,
+		max_radius
+	);
+}
+
+
+void GeneCircle::mutateColor()
+{
+	std::normal_distribution<> coldist(0, GeneCircle::stddev_color);
+	
+	this->color.r = std::clamp<unsigned int>(this->color.r + coldist(*Gene::re), 0, 255);
+	this->color.g = std::clamp<unsigned int>(this->color.g + coldist(*Gene::re), 0, 255);
+	this->color.b = std::clamp<unsigned int>(this->color.b + coldist(*Gene::re), 0, 255);
+	this->color.a = std::clamp<unsigned int>(this->color.a + coldist(*Gene::re), 0, 255);
+}
+
+
+float GeneCircle::maxRadius()
+{
+// 	return std::min(Gene::size.x, Gene::size.y);
+	return std::min(Gene::size.x, Gene::size.y)/2;
+}
+
+
+
+// GeneTriangle
+GeneTriangle::~GeneTriangle()
+{
+}
+
+
+void GeneTriangle::draw(sf::RenderTarget& target, sf::RenderStates states) const
+{
+}
+
+
+void GeneTriangle::randomize()
+{
+}
+
+
+void GeneTriangle::mutate()
+{
+}
diff --git a/src/Genes.hpp b/src/Genes.hpp
new file mode 100644
index 0000000..605041b
--- /dev/null
+++ b/src/Genes.hpp
@@ -0,0 +1,62 @@
+#pragma once
+
+#include <random>
+#include <SFML/Graphics.hpp>
+#include <SFML/System.hpp>
+
+
+
+class Gene : public sf::Drawable
+{
+public:
+	static std::minstd_rand* re;
+	static sf::Vector2f size;
+	
+	virtual ~Gene();
+	
+	virtual void randomize() =0;
+	virtual void mutate() =0;
+};
+
+
+
+class GeneCircle : public Gene
+{
+public:
+	virtual ~GeneCircle();
+	
+	virtual void draw(sf::RenderTarget& target, sf::RenderStates states) const;
+	virtual void randomize();
+	virtual void mutate();
+	
+private:
+	static sf::CircleShape circle;
+	static float stddev_position;
+	static float stddev_radius;
+	static float stddev_color;
+	
+	sf::Vector2f position;
+	float radius;
+	sf::Color color;
+	
+	void mutatePosition();
+	void mutateRadius();
+	void mutateColor();
+	
+	float maxRadius();
+};
+
+
+
+class GeneTriangle : public Gene
+{
+public:
+	virtual ~GeneTriangle();
+	
+	virtual void draw(sf::RenderTarget& target, sf::RenderStates states) const;
+	virtual void randomize();
+	virtual void mutate();
+	
+private:
+	// TODO: vertices
+};