rect – ページ 33 – プログラミング de 落描き

2018年3月8日2018年3月7日

ねじれ棒 openFrameworks

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[ About ]
ねじねじ。

[ Source ]

#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) {};
};

#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) {};

};

#include "ofApp.h"

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

	ofSetFrameRate(60);
	ofBackground(239);
	ofSetWindowTitle("Insta");

	ofSetRectMode(ofRectMode::OF_RECTMODE_CENTER);
}

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

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

	ofTranslate(ofGetWidth() / 2, ofGetHeight() / 2);

	float size = 100;

	for (int i = 60; i > 0; i--) {

		float deg = ofNoise(i * 0.005 + ofGetFrameNum() * 0.005) * 720;
		float x = (i * 5) * cos(deg * DEG_TO_RAD);
		float y = (i * 5) * sin(deg * DEG_TO_RAD);
		ofPoint point = ofPoint(x, y);

		ofPushMatrix();
		ofTranslate(point);
		ofRotate(deg);

		ofFill();
		ofSetColor(239);
		ofDrawRectangle(ofPoint(0, 0), size, size);

		ofNoFill();
		ofSetColor(39);
		ofDrawRectangle(ofPoint(0, 0), size, size);

		ofPopMatrix();
	}
}

//--------------------------------------------------------------
int main() {
	ofSetupOpenGL(720, 720, OF_WINDOW);
	ofRunApp(new ofApp());
}

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofBackground(239);

ofSetWindowTitle("Insta");

ofSetRectMode(ofRectMode::OF_RECTMODE_CENTER);

}

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

void ofApp::update() {

}

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

void ofApp::draw() {

ofTranslate(ofGetWidth() / 2, ofGetHeight() / 2);

float size = 100;

for (int i = 60; i > 0; i--) {

float deg = ofNoise(i * 0.005 + ofGetFrameNum() * 0.005) * 720;

float x = (i * 5) * cos(deg * DEG_TO_RAD);

float y = (i * 5) * sin(deg * DEG_TO_RAD);

ofPoint point = ofPoint(x, y);

ofPushMatrix();

ofTranslate(point);

ofRotate(deg);

ofFill();

ofSetColor(239);

ofDrawRectangle(ofPoint(0, 0), size, size);

ofNoFill();

ofSetColor(39);

ofDrawRectangle(ofPoint(0, 0), size, size);

ofPopMatrix();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20180307

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2018年2月14日2018年2月13日

配列の値から生成した黒い渦 openFrameworks

[ Video ]

[ About ]
Twitterで見かけた「炎のエフェクトの作り方」を参考に作成してみました。該当のツイートを保存しそこねて、ご紹介出来ないのが残念です…(結構探したけど見つからなかったので、タイトルがそもそも違うのかも)

ソースコードからも読み取れますが手法としては、
1．配列の0行目にランダム(今回はNoise関数使用)の値を入れる
2.1行目は(x – 1, y – 1), (x, y – 1), (x + 1, y – 1)の3点の平均値を入れる
3.2行目以降は上記の3点に加えて,(x, y – 2)の値を加えた4点の平均を加える
4.3を最終行まで繰り返す
※ 該当する番地が存在しない場合は、無視してね

Excelでも関数と条件付き書式の組み合わせて簡単に作成出来て面白かったので、openFrameworksに取り込んでみました。

[ Source ]

#pragma once
#include "ofMain.h"
#include "ofFbo.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 windowResized(int w, int h) {};
	void dragEvent(ofDragInfo dragInfo) {};
	void gotMessage(ofMessage msg) {};

	ofFbo fbo;
	int rect_size;
	vector<vector<ofColor>> colors;
};

#pragma once

#include "ofMain.h"

#include "ofFbo.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 windowResized(int w, int h) {};

void dragEvent(ofDragInfo dragInfo) {};

void gotMessage(ofMessage msg) {};

ofFbo fbo;

int rect_size;

vector<vector<ofColor>> colors;

};

#include "ofApp.h"

//--------------------------------------------------------------
void ofApp::setup() {
	
	ofSetFrameRate(60);
	ofBackground(0);
	ofSetWindowTitle("Insta");

	ofSetRectMode(ofRectMode::OF_RECTMODE_CENTER);

	this->rect_size = 10;
	this->fbo.allocate(ofGetWidth(), ofGetHeight());
}

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

	this->colors.clear();

	float x_count = ofGetWidth() / this->rect_size;
	float y_count = ofGetHeight() / this->rect_size;

	for (int y = 0; y < y_count; y++) {

		vector<ofColor> tmp_colors;

		for (int x = 0; x < x_count; x++) {

			if (y == 0) {

				float value = ofMap(ofNoise(x * 0.03, ofGetFrameNum() * 0.005), 0, 1, 0, 255);
				tmp_colors.push_back(ofColor(value));
			}
			else {

				float value = 0;
				int count = 0;

				for (int tmp_x = x - 1; tmp_x <= x + 1; tmp_x++) {

					if (tmp_x >= 0 && tmp_x < x_count) {

						value += this->colors[y - 1][tmp_x].r;
						count++;
					}
				}

				if (y >= 2) {

					value += this->colors[y - 2][x].r;
					count++;
				}

				float average = value / count + ofMap(ofNoise(x * 0.05, y * 0.1 - ofGetFrameNum() * 0.5), 0, 1, -5, 5);

				if (average < 0) {

					average = 0;
				}
				else if (average > 255) {

					average = 255;
				}

				tmp_colors.push_back(ofColor(average));
			}
		}

		this->colors.push_back(tmp_colors);
	}

	this->fbo.begin();

	for (int y = 0; y < this->colors.size(); y++) {

		for (int x = 0; x < this->colors[y].size(); x++) {

			ofSetColor(this->colors[y][x]);
			ofDrawRectangle(ofVec2f(x * this->rect_size + this->rect_size / 2, ofGetHeight() - (y * this->rect_size + this->rect_size / 2)), this->rect_size, this->rect_size);
		}
	}

	this->fbo.end();
}

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

	this->fbo.draw(ofGetWidth() / 2, ofGetHeight() / 2); // RectModeにつられる
}

//========================================================================
int main() {

	ofSetupOpenGL(1280, 720, OF_WINDOW);
	ofRunApp(new ofApp());
}

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofBackground(0);

ofSetWindowTitle("Insta");

ofSetRectMode(ofRectMode::OF_RECTMODE_CENTER);

this->rect_size = 10;

this->fbo.allocate(ofGetWidth(), ofGetHeight());

}

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

void ofApp::update() {

this->colors.clear();

float x_count = ofGetWidth() / this->rect_size;

float y_count = ofGetHeight() / this->rect_size;

for (int y = 0; y < y_count; y++) {

vector<ofColor> tmp_colors;

for (int x = 0; x < x_count; x++) {

if (y == 0) {

float value = ofMap(ofNoise(x * 0.03, ofGetFrameNum() * 0.005), 0, 1, 0, 255);

tmp_colors.push_back(ofColor(value));

}

else {

float value = 0;

int count = 0;

for (int tmp_x = x - 1; tmp_x <= x + 1; tmp_x++) {

if (tmp_x >= 0 && tmp_x < x_count) {

value += this->colors[y - 1][tmp_x].r;

count++;

}

if (y >= 2) {

value += this->colors[y - 2][x].r;

count++;

}

float average = value / count + ofMap(ofNoise(x * 0.05, y * 0.1 - ofGetFrameNum() * 0.5), 0, 1, -5, 5);

if (average < 0) {

average = 0;

}

else if (average > 255) {

average = 255;

}

tmp_colors.push_back(ofColor(average));

}

this->colors.push_back(tmp_colors);

}

this->fbo.begin();

for (int y = 0; y < this->colors.size(); y++) {

for (int x = 0; x < this->colors[y].size(); x++) {

ofSetColor(this->colors[y][x]);

ofDrawRectangle(ofVec2f(x * this->rect_size + this->rect_size / 2, ofGetHeight() - (y * this->rect_size + this->rect_size / 2)), this->rect_size, this->rect_size);

}

this->fbo.end();

}

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

void ofApp::draw() {

this->fbo.draw(ofGetWidth() / 2, ofGetHeight() / 2); // RectModeにつられる

}

//========================================================================

int main() {

ofSetupOpenGL(1280, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20180213

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2018年2月8日2018年2月7日

再帰で四角 openFrameworks

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[ About ]
再帰を使って、四角の中に四角を描写しています。
あんまり再帰の繰り返しは使わないんですが、使ってみると面白いですね。

[ Source ]

#pragma once
#include "ofMain.h"
#include "RecuRect.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 windowResized(int w, int h) {};
	void dragEvent(ofDragInfo dragInfo) {};
	void gotMessage(ofMessage msg) {};

	RecuRect r_rect;
};

#pragma once

#include "ofMain.h"

#include "RecuRect.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 windowResized(int w, int h) {};

void dragEvent(ofDragInfo dragInfo) {};

void gotMessage(ofMessage msg) {};

RecuRect r_rect;

};

#include "ofApp.h"

//--------------------------------------------------------------
void ofApp::setup() {
	
	ofSetFrameRate(60);
	ofBackground(0);
	ofSetWindowTitle("Insta");

	ofSetRectMode(ofRectMode::OF_RECTMODE_CENTER);
	ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);
	ofSetLineWidth(0.3);
}

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

	if (ofGetFrameNum() % 180 == 0) {

		this->r_rect = RecuRect(6, ofVec2f(ofGetWidth() / 2, ofGetHeight() / 2), 720, true);
	}

	this->r_rect.update();
}

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

	r_rect.draw();
}

//========================================================================
int main() {

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofBackground(0);

ofSetWindowTitle("Insta");

ofSetRectMode(ofRectMode::OF_RECTMODE_CENTER);

ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);

ofSetLineWidth(0.3);

}

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

void ofApp::update() {

if (ofGetFrameNum() % 180 == 0) {

this->r_rect = RecuRect(6, ofVec2f(ofGetWidth() / 2, ofGetHeight() / 2), 720, true);

}

this->r_rect.update();

}

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

void ofApp::draw() {

r_rect.draw();

}

//========================================================================

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

#pragma once
#include "ofMain.h"

class RecuRect
{
public:
	RecuRect();
	RecuRect(int level, ofVec2f location, float size, bool origin = false);
	~RecuRect();

	void update();
	void draw();
private:
	int level;
	ofVec2f location;
	float size;
	int type;
	bool origin;
	ofColor color;
	float alpha;
	float alpha_vec;

	std::vector<RecuRect> rects;
};

#pragma once

#include "ofMain.h"

class RecuRect

{

public:

RecuRect();

RecuRect(int level, ofVec2f location, float size, bool origin = false);

~RecuRect();

void update();

void draw();

private:

int level;

ofVec2f location;

float size;

int type;

bool origin;

ofColor color;

float alpha;

float alpha_vec;

std::vector<RecuRect> rects;

};

#include "RecuRect.h"

RecuRect::RecuRect() {

}

RecuRect::RecuRect(int level, ofVec2f location, float size, bool origin) {

	this->type = ofRandom(100);

	if (origin || (level > 0 && this->type > 20)) {

		this->rects.push_back(RecuRect(level - 1, ofVec2f(location.x - size / 4, location.y - size / 4), size / 2));
		this->rects.push_back(RecuRect(level - 1, ofVec2f(location.x - size / 4, location.y + size / 4), size / 2));
		this->rects.push_back(RecuRect(level - 1, ofVec2f(location.x + size / 4, location.y - size / 4), size / 2));
		this->rects.push_back(RecuRect(level - 1, ofVec2f(location.x + size / 4, location.y + size / 4), size / 2));
	}

	this->level = level;
	this->location = location;
	this->size = size;
	this->origin = origin;
	this->color.setHsb(ofRandom(255), 230, 230);
	this->alpha = 0;
	this->alpha_vec = ofRandom(2, 5);
}

RecuRect::~RecuRect() {

}

void RecuRect::update() {

	for (int i = 0; i < this->rects.size(); i++) {

		this->rects[i].update();
	}

	this->alpha += this->alpha_vec;
}

void RecuRect::draw() {

	for (int i = 0; i < this->rects.size(); i++) {

		this->rects[i].draw();
	}
	
	if (this->type > 60) {

		ofNoFill();
		ofSetColor(255, this->alpha);
		ofDrawRectangle(this->location, size, size);
	}

	if (this->type < 3) {

		ofFill();
		ofSetColor(this->color, this->alpha);
		ofDrawRectangle(this->location, size, size);
	}

}

#include "RecuRect.h"

RecuRect::RecuRect() {

}

RecuRect::RecuRect(int level, ofVec2f location, float size, bool origin) {

this->type = ofRandom(100);

if (origin || (level > 0 && this->type > 20)) {

this->rects.push_back(RecuRect(level - 1, ofVec2f(location.x - size / 4, location.y - size / 4), size / 2));

this->rects.push_back(RecuRect(level - 1, ofVec2f(location.x - size / 4, location.y + size / 4), size / 2));

this->rects.push_back(RecuRect(level - 1, ofVec2f(location.x + size / 4, location.y - size / 4), size / 2));

this->rects.push_back(RecuRect(level - 1, ofVec2f(location.x + size / 4, location.y + size / 4), size / 2));

}

this->level = level;

this->location = location;

this->size = size;

this->origin = origin;

this->color.setHsb(ofRandom(255), 230, 230);

this->alpha = 0;

this->alpha_vec = ofRandom(2, 5);

}

RecuRect::~RecuRect() {

}

void RecuRect::update() {

for (int i = 0; i < this->rects.size(); i++) {

this->rects[i].update();

}

this->alpha += this->alpha_vec;

}

void RecuRect::draw() {

for (int i = 0; i < this->rects.size(); i++) {

this->rects[i].draw();

}

if (this->type > 60) {

ofNoFill();

ofSetColor(255, this->alpha);

ofDrawRectangle(this->location, size, size);

}

if (this->type < 3) {

ofFill();

ofSetColor(this->color, this->alpha);

ofDrawRectangle(this->location, size, size);

}

[ Link ]
https://github.com/junkiyoshi/Insta20180207

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