プログラミング de 落描き – ページ 821 – 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4月26日2018年4月25日

陽炎 openFrameworks

[ Video ]

[ About ]
X軸に平行な線を等間隔に描写していきます。

ただし、下記の二つのフールを追加しています。
1. Y座標 + Frame数を引数としたNoise関数の結果により線のX座標がずれる
2. 中心座標からの距離が一定以内の場合は描写しない

割と、はっきり円の輪郭が見えてくるのが個人的にツボです。

[ 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");

	ofSetColor(39);
	ofSetLineWidth(2);
}

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

}

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

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

	int radius = 250;
	int line_length = 380;
	for (int y = -ofGetHeight() / 2; y <= ofGetHeight() / 2; y += 5) {

		int x_start = ofNoise(y * 0.02 + ofGetFrameNum() * 0.01) * -line_length;
		for (int x = x_start; x <= x_start + line_length; x += 1) {

			if (ofPoint(x, y).length() > radius) {

				ofDrawLine(ofPoint(x, y), ofPoint(x + 1, y));
			}
		}
	}
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofBackground(239);

ofSetWindowTitle("Insta");

ofSetColor(39);

ofSetLineWidth(2);

}

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

void ofApp::update() {

}

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

void ofApp::draw() {

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

int radius = 250;

int line_length = 380;

for (int y = -ofGetHeight() / 2; y <= ofGetHeight() / 2; y += 5) {

int x_start = ofNoise(y * 0.02 + ofGetFrameNum() * 0.01) * -line_length;

for (int x = x_start; x <= x_start + line_length; x += 1) {

if (ofPoint(x, y).length() > radius) {

ofDrawLine(ofPoint(x, y), ofPoint(x + 1, y));

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20180425

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2018年4月25日2018年4月24日

あいうえお表 ofxTrueTypeFontUC openFrameworks

[ Video ]

[ About ]
ofxTrueTypeFontUCからひらがなの文字情報(座標)を取得してNoise関数を掛け合わせてみました。ふよふよしていて面白い。

Twitterで見かけたのですがopenFrameworks0.10.0からUTF8がサポートされるそうです。

openFrameworks, a C++ toolkit for creative coding — UTF8 support

絵文字とか使えるようで、楽しみ。

[ 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) {};

	ofxTrueTypeFontUC font;
};

#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) {};

ofxTrueTypeFontUC font;

};

#include "ofApp.h"

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

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

	ofSetColor(39);
	this->font.loadFont("fonts/Kazesawa-Bold.ttf", 50, true, true);
}

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

	ofSeedRandom(39);
}

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

	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",
		"は", "ひ", "ふ", "へ", "ほ",
		"ま", "み", "む", "め", "も",
		"や", "　", "ゆ", "　", "よ",
		"ら", "り", "る", "れ", "ろ",
		"わ", "　", "を", "　", "ん"
	};

	for (int words_index = 0; words_index < words.size(); words_index++) {
	
		if (words[words_index] == "　") {

			continue;
		}
		
		ofPoint word_size = ofPoint(this->font.stringWidth(words[words_index]), this->font.stringHeight(words[words_index]));
		vector<ofTTFCharacter> word_paths = this->font.getStringAsPoints(words[words_index]);
		ofPoint word_point = ofPoint(ofGetWidth() - (words_index / 5) * 72 - 38, 216 + (words_index % 5) * 72);

		ofPushMatrix();
		ofTranslate(word_point);

		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();

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

				if (o_index != 0) {

					ofNextContour(true);
				}

				outline[o_index] = outline[o_index].getResampledBySpacing(3);
				vector<ofPoint> vertices = outline[o_index].getVertices();
				for (int v_index = 0; v_index < vertices.size(); v_index++) {

					ofPoint point = ofPoint(vertices[v_index].x - word_size.x / 2, vertices[v_index].y + word_size.y / 2);
					point *= 0.5 + ofNoise((word_point.x + point.x * 0.01), (word_point.y + point.y) * 0.01, ofGetFrameNum() * 0.005);
					ofVertex(point);
				}
			}
			ofEndShape(true);
		}

		ofPopMatrix();
	}
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofBackground(239);

ofSetWindowTitle("Insta");

ofSetColor(39);

this->font.loadFont("fonts/Kazesawa-Bold.ttf", 50, true, true);

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

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",

"は", "ひ", "ふ", "へ", "ほ",

"ま", "み", "む", "め", "も",

"や", "　", "ゆ", "　", "よ",

"ら", "り", "る", "れ", "ろ",

"わ", "　", "を", "　", "ん"

};

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

if (words[words_index] == "　") {

continue;

}

ofPoint word_size = ofPoint(this->font.stringWidth(words[words_index]), this->font.stringHeight(words[words_index]));

vector<ofTTFCharacter> word_paths = this->font.getStringAsPoints(words[words_index]);

ofPoint word_point = ofPoint(ofGetWidth() - (words_index / 5) * 72 - 38, 216 + (words_index % 5) * 72);

ofPushMatrix();

ofTranslate(word_point);

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();

ofBeginShape();

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

if (o_index != 0) {

ofNextContour(true);

}

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

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

for (int v_index = 0; v_index < vertices.size(); v_index++) {

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

point *= 0.5 + ofNoise((word_point.x + point.x * 0.01), (word_point.y + point.y) * 0.01, ofGetFrameNum() * 0.005);

ofVertex(point);

}

ofEndShape(true);

}

ofPopMatrix();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20180424

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2018年4月24日2018年4月23日

2つのトーラス openFrameworks

[ Video ]

[ About ]
トーラスの中を3色のSphereが巡回していて、Sphere周辺の辺だけがその色で描写されています。一つだけだと寂しかったので、二つ重ねてみました。

[ 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) {};

	ofEasyCam cam;
	ofPoint make_point(float radius, float small_radius, float deg, float small_deg);
};

#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) {};

ofEasyCam cam;

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

};

#include "ofApp.h"

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

	ofSetFrameRate(60);
	ofBackground(39);
	ofSetWindowTitle("Insta");

	ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);
	ofSetLineWidth(1.5);
}

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

}

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

	this->cam.begin();

	float radius = 300;
	vector<ofColor> colors = {ofColor(239, 39, 39), ofColor(39, 239, 39), ofColor(39, 39, 239)};
	for (int loop = 0; loop < 2; loop++) {

		ofRotateX(loop * 90);
		for (int i = 0; i < colors.size(); i++) {

			float sphere_deg = (360 / colors.size()) * i + ofGetFrameNum();

			ofPoint sphere_point = ofPoint(radius * cos(sphere_deg * DEG_TO_RAD), radius * sin(sphere_deg * DEG_TO_RAD));
			ofFill();
			ofSetColor(colors[i]);
			ofDrawSphere(sphere_point, 5);

			int deg_span = 5;
			for (int deg = 0; deg < 360; deg += deg_span) {

				int small_deg_span = 5;
				float small_radius = 80;
				vector<ofPoint> vertices;
				for (int small_deg = 0; small_deg < 360; small_deg += small_deg_span) {

					ofPoint point = make_point(radius, small_radius, deg, small_deg);
					float distance = sphere_point.distance(point);
					ofSetColor(colors[i], ofMap(distance, 0, 250, 255, 0));
					if (distance < 250) {

						vertices.push_back(point);

						ofPoint next_point = make_point(radius, small_radius, deg + deg_span, small_deg);
						ofDrawLine(point, next_point);
					}
				}

				ofNoFill();
				ofBeginShape();
				ofVertices(vertices);
				ofEndShape(true);
			}
		}
	}

	this->cam.end();
}

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

ofBackground(39);

ofSetWindowTitle("Insta");

ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);

ofSetLineWidth(1.5);

}

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

void ofApp::update() {

}

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

void ofApp::draw() {

this->cam.begin();

float radius = 300;

vector<ofColor> colors = {ofColor(239, 39, 39), ofColor(39, 239, 39), ofColor(39, 39, 239)};

for (int loop = 0; loop < 2; loop++) {

ofRotateX(loop * 90);

for (int i = 0; i < colors.size(); i++) {

float sphere_deg = (360 / colors.size()) * i + ofGetFrameNum();

ofPoint sphere_point = ofPoint(radius * cos(sphere_deg * DEG_TO_RAD), radius * sin(sphere_deg * DEG_TO_RAD));

ofFill();

ofSetColor(colors[i]);

ofDrawSphere(sphere_point, 5);

int deg_span = 5;

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

int small_deg_span = 5;

float small_radius = 80;

vector<ofPoint> vertices;

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

ofPoint point = make_point(radius, small_radius, deg, small_deg);

float distance = sphere_point.distance(point);

ofSetColor(colors[i], ofMap(distance, 0, 250, 255, 0));

if (distance < 250) {

vertices.push_back(point);

ofPoint next_point = make_point(radius, small_radius, deg + deg_span, small_deg);

ofDrawLine(point, next_point);

}

ofNoFill();

ofBeginShape();

ofVertices(vertices);

ofEndShape(true);

}

this->cam.end();

}

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

ofPoint ofApp::make_point(float radius, float small_radius, float deg, 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/Insta20180423

[ほしいものリスト]
Amazon

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