プログラミング de 落描き – ページ 824 – クリエイティブ・コーディングによる生成物とソース

2018年10月3日2018年10月3日

Lenna. openFrameworks

[ Video ]

[ About ]
画像データのピクセル操作に関する質問を頂いたので、返信用に作成した動作検証用のSourceとLennaさん

Lenna.

[ Source ]

#pragma once
#include "ofMain.h"

class ofApp : public ofBaseApp {

public:
	void setup();
	void update();
	void draw();

	void keyPressed(int key) {};
	void keyReleased(int key) {};
	void mouseMoved(int x, int y) {};
	void mouseDragged(int x, int y, int button) {};
	void mousePressed(int x, int y, int button) {};
	void mouseReleased(int x, int y, int button) {};
	void mouseEntered(int x, int y) {};
	void mouseExited(int x, int y) {};
	void windowResized(int w, int h) {};
	void dragEvent(ofDragInfo dragInfo) {};
	void gotMessage(ofMessage msg) {};

	ofImage image;
	ofPixels pixels;
};

#pragma once

#include "ofMain.h"

class ofApp : public ofBaseApp {

public:

void setup();

void update();

void draw();

void keyPressed(int key) {};

void keyReleased(int key) {};

void mouseMoved(int x, int y) {};

void mouseDragged(int x, int y, int button) {};

void mousePressed(int x, int y, int button) {};

void mouseReleased(int x, int y, int button) {};

void mouseEntered(int x, int y) {};

void mouseExited(int x, int y) {};

void windowResized(int w, int h) {};

void dragEvent(ofDragInfo dragInfo) {};

void gotMessage(ofMessage msg) {};

ofImage image;

ofPixels pixels;

};

#include "ofApp.h"

//--------------------------------------------------------------
void ofApp::setup() {

	ofSetFrameRate(60);
	ofSetWindowTitle("openframeworks");

	ofBackground(39);
	
	this->image.load("images/lenna.jpg");
	this->pixels = this->image.getPixels();
}

//--------------------------------------------------------------
void ofApp::update() {

}

//--------------------------------------------------------------
void ofApp::draw() {

	int step = ofMap(ofGetMouseX(), 0, ofGetWidth(), 5, 30);
	for (int x = 0; x < this->pixels.getWidth(); x += step) {

		for (int y = 0; y < this->pixels.getHeight(); y += step) {
			 
			ofColor color = this->pixels.getColor(x, y);
			ofSetColor(color);
			ofDrawRectangle(x, y, step, step);
		}
	}
}

//--------------------------------------------------------------
int main() {

	ofSetupOpenGL(720, 720, OF_WINDOW);
	ofRunApp(new ofApp());
}

#include "ofApp.h"

//--------------------------------------------------------------

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openframeworks");

ofBackground(39);

this->image.load("images/lenna.jpg");

this->pixels = this->image.getPixels();

}

//--------------------------------------------------------------

void ofApp::update() {

}

//--------------------------------------------------------------

void ofApp::draw() {

int step = ofMap(ofGetMouseX(), 0, ofGetWidth(), 5, 30);

for (int x = 0; x < this->pixels.getWidth(); x += step) {

for (int y = 0; y < this->pixels.getHeight(); y += step) {

ofColor color = this->pixels.getColor(x, y);

ofSetColor(color);

ofDrawRectangle(x, y, step, step);

}

//--------------------------------------------------------------

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20181003

2018年10月2日2018年10月2日

Noisy Torus. openFrameworks

[ Video ]

[ About ]
トーラスをパーリンノイズでバラバラに

Torus is split by Perlin noise.

[ Source ]

#pragma once
#include "ofMain.h"

class ofApp : public ofBaseApp {

public:
	void setup();
	void update();
	void draw();

	void keyPressed(int key) {};
	void keyReleased(int key) {};
	void mouseMoved(int x, int y) {};
	void mouseDragged(int x, int y, int button) {};
	void mousePressed(int x, int y, int button) {};
	void mouseReleased(int x, int y, int button) {};
	void mouseEntered(int x, int y) {};
	void mouseExited(int x, int y) {};
	void windowResized(int w, int h) {};
	void dragEvent(ofDragInfo dragInfo) {};
	void gotMessage(ofMessage msg) {};

	ofPoint make_point(float radius, float deg, float small_radius, float small_deg);

	ofEasyCam cam;
};

#pragma once

#include "ofMain.h"

class ofApp : public ofBaseApp {

public:

void setup();

void update();

void draw();

void keyPressed(int key) {};

void keyReleased(int key) {};

void mouseMoved(int x, int y) {};

void mouseDragged(int x, int y, int button) {};

void mousePressed(int x, int y, int button) {};

void mouseReleased(int x, int y, int button) {};

void mouseEntered(int x, int y) {};

void mouseExited(int x, int y) {};

void windowResized(int w, int h) {};

void dragEvent(ofDragInfo dragInfo) {};

void gotMessage(ofMessage msg) {};

ofPoint make_point(float radius, float deg, float small_radius, float small_deg);

ofEasyCam cam;

};

#include "ofApp.h"

//--------------------------------------------------------------
void ofApp::setup() {

	ofSetFrameRate(60);
	ofSetWindowTitle("openframeworks");

	ofBackground(239);
	ofSetColor(39);
	ofEnableDepthTest();

}
//--------------------------------------------------------------
void ofApp::update() {

}

//--------------------------------------------------------------
void ofApp::draw() {

	this->cam.begin();
	ofRotateY(ofGetFrameNum());

	float radius = 300.f;
	float small_radius = 80.f;
	float deg_span = 10.f;
	float small_deg_span = 30.f;

	for (int deg = 0; deg < 360; deg += deg_span) {

		for (int small_deg = 0; small_deg < 360; small_deg += small_deg_span) {

			float noise_value = ofNoise(deg * 0.05, small_deg * 0.05, ofGetFrameNum() * 0.005);
			float tmp_small_radius = small_radius * noise_value;

			ofSetColor(255 - noise_value * 255);

			ofBeginShape();

			ofVertex(this->make_point(radius, deg, tmp_small_radius, small_deg));
			ofVertex(this->make_point(radius, deg + deg_span, tmp_small_radius, small_deg));
			ofVertex(this->make_point(radius, deg + deg_span, tmp_small_radius, small_deg + small_deg_span));
			ofVertex(this->make_point(radius, deg, tmp_small_radius, small_deg + small_deg_span));

			ofEndShape(true);
		}
	}


	this->cam.end();
}

//--------------------------------------------------------------
ofPoint ofApp::make_point(float radius, float deg, float small_radius, float small_deg) {

	float x_1 = radius * cos(deg * DEG_TO_RAD);
	float y_1 = radius * sin(deg * DEG_TO_RAD);

	float x_2 = small_radius * cos(small_deg * DEG_TO_RAD) * cos(deg * DEG_TO_RAD);
	float y_2 = small_radius * cos(small_deg * DEG_TO_RAD) * sin(deg * DEG_TO_RAD);

	float x = x_1 + x_2;
	float y = y_1 + y_2;
	float z = small_radius * sin(small_deg * DEG_TO_RAD);

	return ofPoint(x, y, z);
}

//--------------------------------------------------------------
int main() {

	ofSetupOpenGL(720, 720, OF_WINDOW);
	ofRunApp(new ofApp());
}

#include "ofApp.h"

//--------------------------------------------------------------

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openframeworks");

ofBackground(239);

ofSetColor(39);

ofEnableDepthTest();

}

//--------------------------------------------------------------

void ofApp::update() {

}

//--------------------------------------------------------------

void ofApp::draw() {

this->cam.begin();

ofRotateY(ofGetFrameNum());

float radius = 300.f;

float small_radius = 80.f;

float deg_span = 10.f;

float small_deg_span = 30.f;

for (int deg = 0; deg < 360; deg += deg_span) {

for (int small_deg = 0; small_deg < 360; small_deg += small_deg_span) {

float noise_value = ofNoise(deg * 0.05, small_deg * 0.05, ofGetFrameNum() * 0.005);

float tmp_small_radius = small_radius * noise_value;

ofSetColor(255 - noise_value * 255);

ofBeginShape();

ofVertex(this->make_point(radius, deg, tmp_small_radius, small_deg));

ofVertex(this->make_point(radius, deg + deg_span, tmp_small_radius, small_deg));

ofVertex(this->make_point(radius, deg + deg_span, tmp_small_radius, small_deg + small_deg_span));

ofVertex(this->make_point(radius, deg, tmp_small_radius, small_deg + small_deg_span));

ofEndShape(true);

}

this->cam.end();

}

//--------------------------------------------------------------

ofPoint ofApp::make_point(float radius, float deg, float small_radius, float small_deg) {

float x_1 = radius * cos(deg * DEG_TO_RAD);

float y_1 = radius * sin(deg * DEG_TO_RAD);

float x_2 = small_radius * cos(small_deg * DEG_TO_RAD) * cos(deg * DEG_TO_RAD);

float y_2 = small_radius * cos(small_deg * DEG_TO_RAD) * sin(deg * DEG_TO_RAD);

float x = x_1 + x_2;

float y = y_1 + y_2;

float z = small_radius * sin(small_deg * DEG_TO_RAD);

return ofPoint(x, y, z);

}

//--------------------------------------------------------------

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20181002

2018年10月1日2018年10月16日

Random walk of Boxes. openFrameworks

[ Video ]

[ About ]
立方体をランダムウォーク

Random walk of boxes.

[ Source ]

#pragma once
#include "ofMain.h"
#include "Particle.h"

class ofApp : public ofBaseApp {

public:
	void setup();
	void update();
	void draw();

	void keyPressed(int key) {};
	void keyReleased(int key) {};
	void mouseMoved(int x, int y) {};
	void mouseDragged(int x, int y, int button) {};
	void mousePressed(int x, int y, int button) {};
	void mouseReleased(int x, int y, int button) {};
	void mouseEntered(int x, int y) {};
	void mouseExited(int x, int y) {};
	void windowResized(int w, int h) {};
	void dragEvent(ofDragInfo dragInfo) {};
	void gotMessage(ofMessage msg) {};

	ofEasyCam cam;
	std::vector<std::unique_ptr<Particle>> particles;
};

#pragma once

#include "ofMain.h"

#include "Particle.h"

class ofApp : public ofBaseApp {

public:

void setup();

void update();

void draw();

void keyPressed(int key) {};

void keyReleased(int key) {};

void mouseMoved(int x, int y) {};

void mouseDragged(int x, int y, int button) {};

void mousePressed(int x, int y, int button) {};

void mouseReleased(int x, int y, int button) {};

void mouseEntered(int x, int y) {};

void mouseExited(int x, int y) {};

void windowResized(int w, int h) {};

void dragEvent(ofDragInfo dragInfo) {};

void gotMessage(ofMessage msg) {};

ofEasyCam cam;

std::vector<std::unique_ptr<Particle>> particles;

};

#include "ofApp.h"

//--------------------------------------------------------------
void ofApp::setup() {

	ofSetFrameRate(60);
	ofSetWindowTitle("openframeworks");

	ofBackground(239);
	ofSetColor(39);
	ofNoFill();
	ofEnableDepthTest();

	for (int i = 0; i < 50; i++) { 
		
		std::unique_ptr<Particle> particle(new Particle());
		this->particles.push_back(std::move(particle));
	}
}
//--------------------------------------------------------------
void ofApp::update() {

	for (std::unique_ptr<Particle>& particle : this->particles)	{ particle->Upate(this->particles); }
}

//--------------------------------------------------------------
void ofApp::draw() {

	this->cam.begin();

	for (std::unique_ptr<Particle>& particle : this->particles) { particle->Draw(); }

	this->cam.end();
}

//--------------------------------------------------------------
int main() {

	ofSetupOpenGL(720, 720, OF_WINDOW);
	ofRunApp(new ofApp());
}

#include "ofApp.h"

//--------------------------------------------------------------

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openframeworks");

ofBackground(239);

ofSetColor(39);

ofNoFill();

ofEnableDepthTest();

for (int i = 0; i < 50; i++) {

std::unique_ptr<Particle> particle(new Particle());

this->particles.push_back(std::move(particle));

}

//--------------------------------------------------------------

void ofApp::update() {

for (std::unique_ptr<Particle>& particle : this->particles) { particle->Upate(this->particles); }

}

//--------------------------------------------------------------

void ofApp::draw() {

this->cam.begin();

for (std::unique_ptr<Particle>& particle : this->particles) { particle->Draw(); }

this->cam.end();

}

//--------------------------------------------------------------

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

#pragma once
#include "ofMain.h"

class Particle {
public:
	Particle();
	~Particle();
	void Upate(std::vector<std::unique_ptr<Particle>>& particles);
	void Draw();

	ofPoint next;
private:

	int size;
	int depth;

	ofPoint location;
	int direction_index;
	ofPoint directions[5];
};

#pragma once

#include "ofMain.h"

class Particle {

public:

Particle();

~Particle();

void Upate(std::vector<std::unique_ptr<Particle>>& particles);

void Draw();

ofPoint next;

private:

int size;

int depth;

ofPoint location;

int direction_index;

ofPoint directions[5];

};

#include "Particle.h"

Particle::Particle() {

	this->size = 40;
	this->depth = ofGetWidth() > ofGetHeight() ? ofGetWidth() : ofGetHeight();

	int x = (int)(ofRandom(ofGetWidth()) / this->size) * this->size;
	int y = (int)(ofRandom(ofGetHeight()) / this->size) * this->size;
	this->location = ofPoint(x, y);

	this->directions[0] = ofPoint(1, 0);
	this->directions[1] = ofPoint(-1, 0);
	this->directions[2] = ofPoint(0, 1);
	this->directions[3] = ofPoint(0, -1);
	this->directions[4] = ofPoint(0, 0);
}

Particle::~Particle() {

}

void Particle::Upate(std::vector<std::unique_ptr<Particle>>& particles) {

	if (ofGetFrameNum() % this->size == 0) {

		int try_count = 0;
		int r = ofRandom(4);
		while (try_count < 4) {

			this->direction_index = (r + try_count) % 4;

			if (this->location.x < 0) { this->direction_index = 0; }
			else if (this->location.x > ofGetWidth()) { this->direction_index = 1; }

			if (this->location.y < 0) { this->direction_index = 2; }
			else if (this->location.y > ofGetHeight()) { this->direction_index = 3; }

			this->next = this->location + this->directions[this->direction_index] * this->size;

			bool overlap = false;
			for (std::unique_ptr<Particle>& particle : particles) {

				if (this != particle.get()) {

					if (this->next == particle->next) {

						overlap = true;
						break;
					}
				}
			}

			if (overlap == false) { break; }
			try_count++;
		}

		if (try_count == 4) { this->direction_index = 4; }
	}
	else if (ofGetFrameNum() % this->size == 1) {

		this->next = ofPoint();
	}

	this->location += this->directions[this->direction_index];
}

void Particle::Draw() {

	ofPushMatrix();
	ofTranslate(this->location - ofPoint(ofGetWidth() * 0.5, ofGetHeight() * 0.5));

	switch (this->direction_index)
	{
	case 0:
		ofRotateY(ofMap(ofGetFrameNum() % this->size, 0, this->size - 1, 0, 90));
		break;
	case 1:
		ofRotateY(ofMap(ofGetFrameNum() % this->size, 0, this->size - 1, 0, -90));
		break;
	case 2:
		ofRotateX(ofMap(ofGetFrameNum() % this->size, 0, this->size - 1, 0, -90));
		break;
	case 3:
		ofRotateX(ofMap(ofGetFrameNum() % this->size, 0, this->size - 1, 0, 90));
		break;
	default:
		break;
	}

	ofDrawBox(this->size);

	ofPopMatrix();
}

#include "Particle.h"

Particle::Particle() {

this->size = 40;

this->depth = ofGetWidth() > ofGetHeight() ? ofGetWidth() : ofGetHeight();

int x = (int)(ofRandom(ofGetWidth()) / this->size) * this->size;

int y = (int)(ofRandom(ofGetHeight()) / this->size) * this->size;

this->location = ofPoint(x, y);

this->directions[0] = ofPoint(1, 0);

this->directions[1] = ofPoint(-1, 0);

this->directions[2] = ofPoint(0, 1);

this->directions[3] = ofPoint(0, -1);

this->directions[4] = ofPoint(0, 0);

}

Particle::~Particle() {

}

void Particle::Upate(std::vector<std::unique_ptr<Particle>>& particles) {

if (ofGetFrameNum() % this->size == 0) {

int try_count = 0;

int r = ofRandom(4);

while (try_count < 4) {

this->direction_index = (r + try_count) % 4;

if (this->location.x < 0) { this->direction_index = 0; }

else if (this->location.x > ofGetWidth()) { this->direction_index = 1; }

if (this->location.y < 0) { this->direction_index = 2; }

else if (this->location.y > ofGetHeight()) { this->direction_index = 3; }

this->next = this->location + this->directions[this->direction_index] * this->size;

bool overlap = false;

for (std::unique_ptr<Particle>& particle : particles) {

if (this != particle.get()) {

if (this->next == particle->next) {

overlap = true;

break;

}

if (overlap == false) { break; }

try_count++;

}

if (try_count == 4) { this->direction_index = 4; }

}

else if (ofGetFrameNum() % this->size == 1) {

this->next = ofPoint();

}

this->location += this->directions[this->direction_index];

}

void Particle::Draw() {

ofPushMatrix();

ofTranslate(this->location - ofPoint(ofGetWidth() * 0.5, ofGetHeight() * 0.5));

switch (this->direction_index)

{

case 0:

ofRotateY(ofMap(ofGetFrameNum() % this->size, 0, this->size - 1, 0, 90));

break;

case 1:

ofRotateY(ofMap(ofGetFrameNum() % this->size, 0, this->size - 1, 0, -90));

break;

case 2:

ofRotateX(ofMap(ofGetFrameNum() % this->size, 0, this->size - 1, 0, -90));

break;

case 3:

ofRotateX(ofMap(ofGetFrameNum() % this->size, 0, this->size - 1, 0, 90));

break;

default:

break;

}

ofDrawBox(this->size);

ofPopMatrix();

}

[ Link ]
https://github.com/junkiyoshi/Insta20181001

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