openframeworks – ページ 653 – プログラミング de 落描き

2018年3月29日2018年4月9日

Surfaceで桜を描く openFrameworks

[ Video ]

[ About ]
花見の季節なので、桜の枝っぽいものを描けるようにしました。せっかくなのでSurface + Surface Penで手書き？描写。
色をピンクから緑にしたら海ブドウ描写機能に変身できる気がする…

[ 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);
	ofSetWindowTitle("Insta");

	ofSetBackgroundAuto(false);
}

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

}

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

	if (ofGetMousePressed() == false) {

		return;
	}

	ofPoint mouse = ofPoint(ofGetMouseX(), ofGetMouseY());
	ofPoint prev_mouse = ofPoint(ofGetPreviousMouseX(), ofGetPreviousMouseY());

	ofSetColor(39);
	ofSetLineWidth(20);
	ofDrawLine(mouse, prev_mouse);

	if (ofRandom(100) < 50) {

		ofPoint target = mouse - prev_mouse;
		target *= 10;

		ofPushMatrix();
		ofTranslate(mouse);

		ofSetLineWidth(10);
		ofDrawLine(ofPoint(0, 0), target);

		ofSetColor(255, 200, 200);
		for (int f = 0; f < target.length() * 0.5; f++) {

			ofFill();
			ofDrawCircle(target * ofRandom(1) + ofPoint(ofRandom(-30, 30), ofRandom(-30, 30)), 3);
		}

		ofPopMatrix();
	}
}

//--------------------------------------------------------------
void ofApp::keyPressed(int key) {

	if (key == 'c') {

		ofBackground(39 + 39);
	}
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("Insta");

ofSetBackgroundAuto(false);

}

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

void ofApp::update() {

}

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

void ofApp::draw() {

if (ofGetMousePressed() == false) {

return;

}

ofPoint mouse = ofPoint(ofGetMouseX(), ofGetMouseY());

ofPoint prev_mouse = ofPoint(ofGetPreviousMouseX(), ofGetPreviousMouseY());

ofSetColor(39);

ofSetLineWidth(20);

ofDrawLine(mouse, prev_mouse);

if (ofRandom(100) < 50) {

ofPoint target = mouse - prev_mouse;

target *= 10;

ofPushMatrix();

ofTranslate(mouse);

ofSetLineWidth(10);

ofDrawLine(ofPoint(0, 0), target);

ofSetColor(255, 200, 200);

for (int f = 0; f < target.length() * 0.5; f++) {

ofFill();

ofDrawCircle(target * ofRandom(1) + ofPoint(ofRandom(-30, 30), ofRandom(-30, 30)), 3);

}

ofPopMatrix();

}

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

void ofApp::keyPressed(int key) {

if (key == 'c') {

ofBackground(39 + 39);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20180328

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2018年3月28日2018年3月27日

迫りくる不完全な四角 openFrameworks

[ Video ]

[ About ]
透明で形が欠けた四角形を並べたら綺麗かなと思い。追加で、手前に迫ってくるように動かしてみました。

[ 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) {};

	ofPoint make_rect_point(int len, int deg, int z = 0);

	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 windowResized(int w, int h) {};

void dragEvent(ofDragInfo dragInfo) {};

void gotMessage(ofMessage msg) {};

ofPoint make_rect_point(int len, int deg, int z = 0);

ofEasyCam cam;

};

#include "ofApp.h"

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

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

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

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

	ofSeedRandom(39);
}

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

	this->cam.begin();
	ofTranslate(0, 0, -2048);

	int len = ofGetWidth() / 2;
	ofColor line_color;
	for (int i = 0; i < 32; i++) {

		int deg = ofRandom(360) + ofNoise(i * 0.1, ofGetFrameNum() * 0.005) * 360;
		int deg_end = deg + ofRandom(45, 225);
		int z = ((int)ofRandom(2048) + ofGetFrameNum() * 10) % 2048;

		line_color.setHsb(ofRandom(255), 239, 239);
		ofSetColor(line_color, ofMap(z, 0, 2048, 0, 128));

		ofBeginShape();
		for (; deg < deg_end; deg += 1) {

			ofVertex(make_rect_point(len, deg, z));
		}
		ofEndShape(true);
	}
	
	this->cam.end();
}

//--------------------------------------------------------------
ofPoint ofApp::make_rect_point(int len, int deg, int z) {

	deg += 45;
	int param = deg / 90;

	switch (param % 4) {

	case 0:

		return ofPoint(len, ofMap(deg % 90, 0, 89, -len, len), z);
	case 1:

		return ofPoint(ofMap(deg % 90, 0, 89, len, -len), len, z);
	case 2:

		return ofPoint(-len, ofMap(deg % 90, 0, 89, len, -len), z);
	case 3:

		return ofPoint(ofMap(deg % 90, 0, 89, -len, len), -len, z);
	}

	return ofPoint();
}

//--------------------------------------------------------------
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);

ofSetRectMode(ofRectMode::OF_RECTMODE_CENTER);

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

this->cam.begin();

ofTranslate(0, 0, -2048);

int len = ofGetWidth() / 2;

ofColor line_color;

for (int i = 0; i < 32; i++) {

int deg = ofRandom(360) + ofNoise(i * 0.1, ofGetFrameNum() * 0.005) * 360;

int deg_end = deg + ofRandom(45, 225);

int z = ((int)ofRandom(2048) + ofGetFrameNum() * 10) % 2048;

line_color.setHsb(ofRandom(255), 239, 239);

ofSetColor(line_color, ofMap(z, 0, 2048, 0, 128));

ofBeginShape();

for (; deg < deg_end; deg += 1) {

ofVertex(make_rect_point(len, deg, z));

}

ofEndShape(true);

}

this->cam.end();

}

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

ofPoint ofApp::make_rect_point(int len, int deg, int z) {

deg += 45;

int param = deg / 90;

switch (param % 4) {

case 0:

return ofPoint(len, ofMap(deg % 90, 0, 89, -len, len), z);

case 1:

return ofPoint(ofMap(deg % 90, 0, 89, len, -len), len, z);

case 2:

return ofPoint(-len, ofMap(deg % 90, 0, 89, len, -len), z);

case 3:

return ofPoint(ofMap(deg % 90, 0, 89, -len, len), -len, z);

}

return ofPoint();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20180327

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2018年3月27日2018年3月26日

ぐらぐら openFrameworks

[ Video ]

[ About ]
円を90度づつのモノクロにして、ノイズ関数でズラしてみました。ノイズ関数の強弱によって、円の形が見えたり、四角が見えたりするのが面白いですね。

[ 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);
}

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

}

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

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

	int span = 50;
	for (int radius = 50; radius < ofGetWidth(); radius += span) {

		ofRotate(ofMap(ofNoise(radius * 0.005 + ofGetFrameNum() * 0.05), 0, 1, -50, 50));
		int small_radius = radius - span;

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

			int deg_start = i * 180;
			vector<ofPoint> vertices;
			for (int deg = deg_start; deg <= deg_start + 90; deg += 1) {

				vertices.push_back(ofPoint(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD)));
			}

			for (int deg = deg_start + 90; deg >= deg_start; deg -= 1) {

				vertices.push_back(ofPoint(small_radius * cos(deg * DEG_TO_RAD), small_radius * sin(deg * DEG_TO_RAD)));
			}

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

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofBackground(239);

ofSetWindowTitle("Insta");

ofSetColor(39);

}

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

void ofApp::update() {

}

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

void ofApp::draw() {

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

int span = 50;

for (int radius = 50; radius < ofGetWidth(); radius += span) {

ofRotate(ofMap(ofNoise(radius * 0.005 + ofGetFrameNum() * 0.05), 0, 1, -50, 50));

int small_radius = radius - span;

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

int deg_start = i * 180;

vector<ofPoint> vertices;

for (int deg = deg_start; deg <= deg_start + 90; deg += 1) {

vertices.push_back(ofPoint(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD)));

}

for (int deg = deg_start + 90; deg >= deg_start; deg -= 1) {

vertices.push_back(ofPoint(small_radius * cos(deg * DEG_TO_RAD), small_radius * sin(deg * DEG_TO_RAD)));

}

ofBeginShape();

ofVertices(vertices);

ofEndShape(true);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20180326

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