openframeworks – ページ 648 – プログラミング de 落描き

2018年4月13日2018年4月12日

ノイズのスケールを可視化 openFrameworks

[ Video ]

[ About ]
Noise関数の引数として、頻繁にx, y座標を与えたるする事が多いのですが、その間隔を変化させたらどうなるだろう？と思いついた結果です。

四角を描写、色をNoise関数の結果で表しています。中央付近は小さい四角なのでx, y座標の値が近く模様っぽいものが現れますが、中央から離れるにしたがって四角が大きくなるので、x, y座標の値も離れます。

[ 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 windowResized(int w, int h) {};
	void dragEvent(ofDragInfo dragInfo) {};
	void gotMessage(ofMessage msg) {};
};

#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 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() {

	ofSeedRandom(39);
}

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

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

	float size = 1;
	float noise_value;
	ofColor rect_color;
	for (int y = size / 2; y < ofGetHeight() / 2 + size;) {

		for (int x = size / 2; x < ofGetWidth() / 2 + size / 2; x += size) {

			noise_value = ofNoise(x * 0.005, y * 0.005 - ofGetFrameNum() * 0.005);
			ofSetColor(noise_value * 255);

			ofDrawRectangle(ofPoint(x, y), size, size);
			ofDrawRectangle(ofPoint(x, -y), size, size);
			ofDrawRectangle(ofPoint(-x, y), size, size);
			ofDrawRectangle(ofPoint(-x, -y), size, size);
		}

		y += size * 1.25;
		size *= 1.5;
	}
}

//--------------------------------------------------------------
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() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

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

float size = 1;

float noise_value;

ofColor rect_color;

for (int y = size / 2; y < ofGetHeight() / 2 + size;) {

for (int x = size / 2; x < ofGetWidth() / 2 + size / 2; x += size) {

noise_value = ofNoise(x * 0.005, y * 0.005 - ofGetFrameNum() * 0.005);

ofSetColor(noise_value * 255);

ofDrawRectangle(ofPoint(x, y), size, size);

ofDrawRectangle(ofPoint(x, -y), size, size);

ofDrawRectangle(ofPoint(-x, y), size, size);

ofDrawRectangle(ofPoint(-x, -y), size, size);

}

y += size * 1.25;

size *= 1.5;

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20180412

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2018年4月12日2018年4月11日

ofxTrueTypeFontUCから取得した座標で遊ぶ openFrameworks

[ Video ]

[ About ]
ofxTrueTypeFontUCでせっかく日本語が扱えるにようになったのに全然触っていなかったので遊んでみました。ofxTrueTypeFontUCのgetStringAsPoints関数から文字の座標を取得して、全ての座標を原点から同じ距離にしてあります。

Z軸も少しズラしてあるので球体に張り付いた文字のような形になってくれました。文字が大きいビリヤードボールのような形ですね。

動画をシェアしているSNS(Instagram/Twitter)のフォロワーは基本外国の方が多いですが、ひらがなが文字という事に気づいてくれるだろうか…(笑

[ Source ]

#pragma once
#include "ofMain.h"
#include "ofxTrueTypeFontUC/src/ofxTrueTypeFontUC.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) {};

	// Make Member
	ofEasyCam cam;
	ofxTrueTypeFontUC font;
	
	// Make Method
	void draw_character_sphere(ofPoint point, string word, int radius);
};

#pragma once

#include "ofMain.h"

#include "ofxTrueTypeFontUC/src/ofxTrueTypeFontUC.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) {};

// Make Member

ofEasyCam cam;

ofxTrueTypeFontUC font;

// Make Method

void draw_character_sphere(ofPoint point, string word, int radius);

};

#include "ofApp.h"

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

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

	ofEnableDepthTest();
	ofSetColor(39);

	this->font.loadFont("fonts/Kazesawa-Bold.ttf", 150, true, true);
}

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

	ofSeedRandom(39);
}

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

	vector<vector<string>> words = {
		{ "あ", "い", "う", "え", "お" },
		{ "か", "き", "く", "け", "こ" },
		{ "さ", "し", "す", "せ", "そ" },
		{ "た", "ち", "つ", "て", "と" },
		{ "な", "に", "ぬ", "ね", "の" },
	};

	this->cam.begin();
	ofRotateX(180);

	int span = 144;
	for (int y = 0; y < words.size(); y++) {

		for (int x = 0; x < words[y].size(); x++) {
			
			this->draw_character_sphere(ofPoint(x * span - ofGetWidth() / 2 + span / 2, y * span - ofGetHeight() / 2 + span / 2), words[y][x], 80);
		}
	}

	this->cam.end();
}

//--------------------------------------------------------------
void ofApp::draw_character_sphere(ofPoint point, string word, int radius) {

	ofPoint word_size = ofPoint(this->font.stringWidth(word), this->font.stringHeight(word));
	vector<ofTTFCharacter> word_paths = this->font.getStringAsPoints(word);
	ofPoint start, end;

	ofPushMatrix();
	ofTranslate(point);

	int deg_param = ofGetFrameNum() % 1080;
	if (deg_param > 720) {

		ofRotateY(deg_param - 720);
	}
	else if (deg_param > 360) {

		ofRotateZ(deg_param - 360);
	}
	else {

		ofRotateX(deg_param);
	}

	for (int w_index = 0; w_index < word_paths.size(); w_index++) {

		vector<ofPolyline> outline = word_paths[w_index].getOutline();
		ofVec3f center = outline[0].getCentroid2D();
		for (int o_index = 0; o_index < outline.size(); o_index++) {

			outline[o_index] = outline[o_index].getResampledBySpacing(3);
			vector<ofPoint> vertices = outline[o_index].getVertices();
			for (int v_index = 1; v_index < vertices.size(); v_index++) {

				start = ofPoint(vertices[v_index - 1].x - word_size.x / 2, vertices[v_index - 1].y + word_size.y / 2, -radius);
				end = ofPoint(vertices[v_index].x - word_size.x / 2, vertices[v_index].y + word_size.y / 2, -radius);
				ofDrawLine(start.normalized() * radius, end.normalized() * radius);
			}
			start = ofPoint(vertices[0].x - word_size.x / 2, vertices[0].y + word_size.y / 2, -radius);
			end = ofPoint(vertices[vertices.size() - 1].x - word_size.x / 2, vertices[vertices.size() - 1].y + word_size.y / 2, -radius);
			ofDrawLine(start.normalized() * radius, end.normalized() * radius);
		}
	}

	ofPopMatrix();
}

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

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

100

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofBackground(239);

ofSetWindowTitle("Insta");

ofEnableDepthTest();

ofSetColor(39);

this->font.loadFont("fonts/Kazesawa-Bold.ttf", 150, true, true);

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

vector<vector<string>> words = {

{ "あ", "い", "う", "え", "お" },

{ "か", "き", "く", "け", "こ" },

{ "さ", "し", "す", "せ", "そ" },

{ "た", "ち", "つ", "て", "と" },

{ "な", "に", "ぬ", "ね", "の" },

};

this->cam.begin();

ofRotateX(180);

int span = 144;

for (int y = 0; y < words.size(); y++) {

for (int x = 0; x < words[y].size(); x++) {

this->draw_character_sphere(ofPoint(x * span - ofGetWidth() / 2 + span / 2, y * span - ofGetHeight() / 2 + span / 2), words[y][x], 80);

}

this->cam.end();

}

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

void ofApp::draw_character_sphere(ofPoint point, string word, int radius) {

ofPoint word_size = ofPoint(this->font.stringWidth(word), this->font.stringHeight(word));

vector<ofTTFCharacter> word_paths = this->font.getStringAsPoints(word);

ofPoint start, end;

ofPushMatrix();

ofTranslate(point);

int deg_param = ofGetFrameNum() % 1080;

if (deg_param > 720) {

ofRotateY(deg_param - 720);

}

else if (deg_param > 360) {

ofRotateZ(deg_param - 360);

}

else {

ofRotateX(deg_param);

}

for (int w_index = 0; w_index < word_paths.size(); w_index++) {

vector<ofPolyline> outline = word_paths[w_index].getOutline();

ofVec3f center = outline[0].getCentroid2D();

for (int o_index = 0; o_index < outline.size(); o_index++) {

outline[o_index] = outline[o_index].getResampledBySpacing(3);

vector<ofPoint> vertices = outline[o_index].getVertices();

for (int v_index = 1; v_index < vertices.size(); v_index++) {

start = ofPoint(vertices[v_index - 1].x - word_size.x / 2, vertices[v_index - 1].y + word_size.y / 2, -radius);

end = ofPoint(vertices[v_index].x - word_size.x / 2, vertices[v_index].y + word_size.y / 2, -radius);

ofDrawLine(start.normalized() * radius, end.normalized() * radius);

}

start = ofPoint(vertices[0].x - word_size.x / 2, vertices[0].y + word_size.y / 2, -radius);

end = ofPoint(vertices[vertices.size() - 1].x - word_size.x / 2, vertices[vertices.size() - 1].y + word_size.y / 2, -radius);

ofDrawLine(start.normalized() * radius, end.normalized() * radius);

}

ofPopMatrix();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20180411

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2018年4月11日2018年4月10日

黒白ドット openFrameworks

[ Video ]

[ About ]
画面の左端と右端を結ぶ線を作り、線より上部には白い丸だけ、下部には黒い丸だけを描写しています。結ばれた線上にかかっている円は切れて見えるようになっているので実際には描写していないのですが、線が見えてくる気がします。

[ 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 windowResized(int w, int h) {};
	void dragEvent(ofDragInfo dragInfo) {};
	void gotMessage(ofMessage msg) {};
};

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

void dragEvent(ofDragInfo dragInfo) {};

void gotMessage(ofMessage msg) {};

};

#include "ofApp.h"

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

	ofSetFrameRate(60);
	ofBackground(139);
	ofSetWindowTitle("Insta");
}

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

}

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

	ofPoint start = ofPoint(0, ofNoise(11, ofGetFrameNum() * 0.01) * ofGetHeight());
	ofPoint end = ofPoint(ofGetWidth(), ofNoise(3, ofGetFrameNum() * 0.01) * ofGetHeight());
	ofPoint distance = end - start;

	float radius = 72;
	bool flag = true;
	for (int circle_x = radius; circle_x < ofGetWidth() + radius; circle_x += radius * 2) {

		for (int circle_y = radius; circle_y < ofGetHeight() + radius; circle_y += radius * 2) {

			flag ? ofSetColor(39) : ofSetColor(239);

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

				float x = radius * cos(deg * DEG_TO_RAD) + circle_x;
				float y = radius * sin(deg * DEG_TO_RAD) + circle_y;
				ofPoint point = start + (distance / ofGetWidth()) * x;
				if (y > point.y) {

					flag ? ofVertex(x, y) : ofVertex(point);
				}
				else {

					flag ? ofVertex(point) : ofVertex(x, y);
				}
			}
			ofEndShape(true);

			flag = !flag;
		}
	}
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofBackground(139);

ofSetWindowTitle("Insta");

}

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

void ofApp::update() {

}

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

void ofApp::draw() {

ofPoint start = ofPoint(0, ofNoise(11, ofGetFrameNum() * 0.01) * ofGetHeight());

ofPoint end = ofPoint(ofGetWidth(), ofNoise(3, ofGetFrameNum() * 0.01) * ofGetHeight());

ofPoint distance = end - start;

float radius = 72;

bool flag = true;

for (int circle_x = radius; circle_x < ofGetWidth() + radius; circle_x += radius * 2) {

for (int circle_y = radius; circle_y < ofGetHeight() + radius; circle_y += radius * 2) {

flag ? ofSetColor(39) : ofSetColor(239);

ofBeginShape();

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

float x = radius * cos(deg * DEG_TO_RAD) + circle_x;

float y = radius * sin(deg * DEG_TO_RAD) + circle_y;

ofPoint point = start + (distance / ofGetWidth()) * x;

if (y > point.y) {

flag ? ofVertex(x, y) : ofVertex(point);

}

else {

flag ? ofVertex(point) : ofVertex(x, y);

}

ofEndShape(true);

flag = !flag;

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20180410

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