openframeworks – ページ 164 – プログラミング de 落描き

2022年4月29日

Radiate coordinates. Draw by openFrameworks

[ Video ]

[ About ]
放射状に。

Radiate.

[ 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) {};

	ofMesh mesh;

	glm::vec2 base_seed;

	vector<glm::vec2> location_list;
	vector<glm::vec2> velocity_list;
	vector<ofColor> color_list;
};

#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) {};

ofMesh mesh;

glm::vec2 base_seed;

vector<glm::vec2> location_list;

vector<glm::vec2> velocity_list;

vector<ofColor> color_list;

};

#include "ofApp.h"

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

	ofSetFrameRate(30);
	ofSetWindowTitle("openframeworks");

	ofBackground(0);
	ofSetCircleResolution(60);
	ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);

	this->mesh.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);
	this->base_seed = glm::vec2(ofRandom(1000), ofRandom(1000));
}

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

	this->mesh.clear();

	int span = 20;
	int radius = 90;
	ofColor color;

	for (int i = 0; i < 15; i++) {

		for (int k = 0; k < 4; k++) {

			auto location = glm::vec2(radius * cos(i * 24 * DEG_TO_RAD), radius * sin(i * 24 * DEG_TO_RAD));
			auto next = glm::vec2((radius - 10) * cos(i * 24 * DEG_TO_RAD), (radius - 10) * sin(i * 24 * DEG_TO_RAD));

			auto distance = location - next;
			distance *= 2;

			auto future = location + distance * 30;
			auto random_deg = ofRandom(360);
			future += glm::vec2(120 * cos(random_deg * DEG_TO_RAD), 120 * sin(random_deg * DEG_TO_RAD));
			auto future_distance = future - location;

			this->location_list.push_back(location);
			this->velocity_list.push_back(glm::normalize(future_distance) * glm::length(distance) * ofRandom(0.25, 0.6));
			color.setHsb(ofRandom(255), 255, 255);
			this->color_list.push_back(ofColor(color, 0));
		}
	}

	for (int i = this->location_list.size() - 1; i > -1; i--) {

		this->location_list[i] += this->velocity_list[i];
		this->velocity_list[i] *= 1.01;

		if (glm::distance(glm::vec2(), this->location_list[i]) > 720) {

			this->location_list.erase(this->location_list.begin() + i);
			this->velocity_list.erase(this->velocity_list.begin() + i);
			this->color_list.erase(this->color_list.begin() + i);
		}

		this->mesh.addVertex(glm::vec3(this->location_list[i], 0));
		this->mesh.addColor(this->color_list[i]);
	}

	for (int i = 0; i < this->mesh.getNumVertices(); i++) {

		for (int k = i + 1; k < this->mesh.getNumVertices(); k++) {

			auto distance = glm::distance(this->mesh.getVertex(i), this->mesh.getVertex(k));
			if (distance < span) {

				auto alpha = distance < span * 0.25 ? 255 : ofMap(distance, span * 0.25, span, 255, 0);

				if (this->mesh.getColor(i).a < alpha) {

					this->mesh.setColor(i, ofColor(this->mesh.getColor(i), alpha));
				}

				if (this->mesh.getColor(k).a < alpha) {

					this->mesh.setColor(k, ofColor(this->mesh.getColor(k), alpha));
				}

				this->mesh.addIndex(i);
				this->mesh.addIndex(k);
			}
		}
	}

}

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

	ofTranslate(ofGetWidth() * 0.5, ofGetHeight() * 0.5);

	this->mesh.drawWireframe();

	ofFill();
	for (int i = 0; i < this->mesh.getNumVertices(); i++) {

		ofSetColor(this->mesh.getColor(i));
		ofDrawCircle(this->mesh.getVertex(i), 3);
	}
}

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

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

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#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(30);

ofSetWindowTitle("openframeworks");

ofBackground(0);

ofSetCircleResolution(60);

ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);

this->mesh.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);

this->base_seed = glm::vec2(ofRandom(1000), ofRandom(1000));

}

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

void ofApp::update() {

this->mesh.clear();

int span = 20;

int radius = 90;

ofColor color;

for (int i = 0; i < 15; i++) {

for (int k = 0; k < 4; k++) {

auto location = glm::vec2(radius * cos(i * 24 * DEG_TO_RAD), radius * sin(i * 24 * DEG_TO_RAD));

auto next = glm::vec2((radius - 10) * cos(i * 24 * DEG_TO_RAD), (radius - 10) * sin(i * 24 * DEG_TO_RAD));

auto distance = location - next;

distance *= 2;

auto future = location + distance * 30;

auto random_deg = ofRandom(360);

future += glm::vec2(120 * cos(random_deg * DEG_TO_RAD), 120 * sin(random_deg * DEG_TO_RAD));

auto future_distance = future - location;

this->location_list.push_back(location);

this->velocity_list.push_back(glm::normalize(future_distance) * glm::length(distance) * ofRandom(0.25, 0.6));

color.setHsb(ofRandom(255), 255, 255);

this->color_list.push_back(ofColor(color, 0));

}

for (int i = this->location_list.size() - 1; i > -1; i--) {

this->location_list[i] += this->velocity_list[i];

this->velocity_list[i] *= 1.01;

if (glm::distance(glm::vec2(), this->location_list[i]) > 720) {

this->location_list.erase(this->location_list.begin() + i);

this->velocity_list.erase(this->velocity_list.begin() + i);

this->color_list.erase(this->color_list.begin() + i);

}

this->mesh.addVertex(glm::vec3(this->location_list[i], 0));

this->mesh.addColor(this->color_list[i]);

}

for (int i = 0; i < this->mesh.getNumVertices(); i++) {

for (int k = i + 1; k < this->mesh.getNumVertices(); k++) {

auto distance = glm::distance(this->mesh.getVertex(i), this->mesh.getVertex(k));

if (distance < span) {

auto alpha = distance < span * 0.25 ? 255 : ofMap(distance, span * 0.25, span, 255, 0);

if (this->mesh.getColor(i).a < alpha) {

this->mesh.setColor(i, ofColor(this->mesh.getColor(i), alpha));

}

if (this->mesh.getColor(k).a < alpha) {

this->mesh.setColor(k, ofColor(this->mesh.getColor(k), alpha));

}

this->mesh.addIndex(i);

this->mesh.addIndex(k);

}

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

void ofApp::draw() {

ofTranslate(ofGetWidth() * 0.5, ofGetHeight() * 0.5);

this->mesh.drawWireframe();

ofFill();

for (int i = 0; i < this->mesh.getNumVertices(); i++) {

ofSetColor(this->mesh.getColor(i));

ofDrawCircle(this->mesh.getVertex(i), 3);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20220429

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2022年4月28日

Radial line. Draw by openFrameworks

[ Video ]

[ About ]
放射状の線。

Radial line.

[ 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) {};

	ofMesh face, line;
};

#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) {};

ofMesh face, line;

};

#include "ofApp.h"

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

	ofSetFrameRate(30);
	ofSetWindowTitle("openframeworks");

	ofBackground(0);
	ofSetLineWidth(1.5);
	ofSetCircleResolution(60);
	
	this->line.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);
}

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

	ofSeedRandom(39);

	this->face.clear();
	this->line.clear();

	auto span = 3;
	auto radius_span = 10;
	for (auto deg = 0; deg < 360; deg += 6) {

		for (auto radius = 150; radius <= 1024; radius += radius_span) {

			auto prev_location = glm::vec2((radius - radius_span) * cos(deg * DEG_TO_RAD), (radius - radius_span) * sin(deg * DEG_TO_RAD));
			auto location = glm::vec2(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD));
			auto next_location = glm::vec2((radius + radius_span) * cos(deg * DEG_TO_RAD), (radius + radius_span) * sin(deg * DEG_TO_RAD));

			auto left = glm::vec2(radius * cos((deg + span * 0.5) * DEG_TO_RAD), radius * sin((deg + span * 0.5) * DEG_TO_RAD));
			auto right = glm::vec2(radius * cos((deg - span * 0.5) * DEG_TO_RAD), radius * sin((deg - span * 0.5) * DEG_TO_RAD));
			auto next_left = glm::vec2((radius + radius_span) * cos((deg + span * 0.5) * DEG_TO_RAD), (radius + radius_span) * sin((deg + span * 0.5) * DEG_TO_RAD));
			auto next_right = glm::vec2((radius + radius_span) * cos((deg - span * 0.5) * DEG_TO_RAD), (radius + radius_span) * sin((deg - span * 0.5) * DEG_TO_RAD));

			auto prev_noise_value = ofNoise(glm::vec3(prev_location * 0.05, ofGetFrameNum() * 0.0085));
			auto noise_value = ofNoise(glm::vec3(location * 0.05, ofGetFrameNum() * 0.0085));
			auto next_noise_value = ofNoise(glm::vec3(next_location * 0.05, ofGetFrameNum() * 0.0085));
			auto threshold = 0.65;
			if (noise_value < threshold) {

				this->face.addVertex(glm::vec3(left, 0));
				this->face.addVertex(glm::vec3(next_left, 0));
				this->face.addVertex(glm::vec3(next_right, 0));
				this->face.addVertex(glm::vec3(right, 0));

				this->line.addVertex(glm::vec3(left, 0));
				this->line.addVertex(glm::vec3(next_left, 0));
				this->line.addVertex(glm::vec3(next_right, 0));
				this->line.addVertex(glm::vec3(right, 0));

				this->face.addIndex(this->face.getNumVertices() - 1); this->face.addIndex(this->face.getNumVertices() - 2); this->face.addIndex(this->face.getNumVertices() - 3);
				this->face.addIndex(this->face.getNumVertices() - 1); this->face.addIndex(this->face.getNumVertices() - 3); this->face.addIndex(this->face.getNumVertices() - 4);

				this->line.addIndex(this->line.getNumVertices() - 1); this->line.addIndex(this->line.getNumVertices() - 2);
				this->line.addIndex(this->line.getNumVertices() - 3); this->line.addIndex(this->line.getNumVertices() - 4);

				if (radius == 150 || prev_noise_value > threshold) {

					this->line.addIndex(this->line.getNumVertices() - 1); this->line.addIndex(this->line.getNumVertices() - 4);
				}
				if (next_noise_value > threshold) {

					this->line.addIndex(this->line.getNumVertices() - 2); this->line.addIndex(this->line.getNumVertices() - 3);
				}
			}
		}
	}
}

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

	ofTranslate(ofGetWindowSize() * 0.5);
	
	ofSetColor(239, 69, 74);
	ofFill();
	ofDrawCircle(glm::vec2(), 135);

	this->face.draw();
	
	ofSetColor(255);
	ofNoFill();
	ofDrawCircle(glm::vec2(), 135);

	this->line.drawWireframe();
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(30);

ofSetWindowTitle("openframeworks");

ofBackground(0);

ofSetLineWidth(1.5);

ofSetCircleResolution(60);

this->line.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);

}

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

void ofApp::update() {

ofSeedRandom(39);

this->face.clear();

this->line.clear();

auto span = 3;

auto radius_span = 10;

for (auto deg = 0; deg < 360; deg += 6) {

for (auto radius = 150; radius <= 1024; radius += radius_span) {

auto prev_location = glm::vec2((radius - radius_span) * cos(deg * DEG_TO_RAD), (radius - radius_span) * sin(deg * DEG_TO_RAD));

auto location = glm::vec2(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD));

auto next_location = glm::vec2((radius + radius_span) * cos(deg * DEG_TO_RAD), (radius + radius_span) * sin(deg * DEG_TO_RAD));

auto left = glm::vec2(radius * cos((deg + span * 0.5) * DEG_TO_RAD), radius * sin((deg + span * 0.5) * DEG_TO_RAD));

auto right = glm::vec2(radius * cos((deg - span * 0.5) * DEG_TO_RAD), radius * sin((deg - span * 0.5) * DEG_TO_RAD));

auto next_left = glm::vec2((radius + radius_span) * cos((deg + span * 0.5) * DEG_TO_RAD), (radius + radius_span) * sin((deg + span * 0.5) * DEG_TO_RAD));

auto next_right = glm::vec2((radius + radius_span) * cos((deg - span * 0.5) * DEG_TO_RAD), (radius + radius_span) * sin((deg - span * 0.5) * DEG_TO_RAD));

auto prev_noise_value = ofNoise(glm::vec3(prev_location * 0.05, ofGetFrameNum() * 0.0085));

auto noise_value = ofNoise(glm::vec3(location * 0.05, ofGetFrameNum() * 0.0085));

auto next_noise_value = ofNoise(glm::vec3(next_location * 0.05, ofGetFrameNum() * 0.0085));

auto threshold = 0.65;

if (noise_value < threshold) {

this->face.addVertex(glm::vec3(left, 0));

this->face.addVertex(glm::vec3(next_left, 0));

this->face.addVertex(glm::vec3(next_right, 0));

this->face.addVertex(glm::vec3(right, 0));

this->line.addVertex(glm::vec3(left, 0));

this->line.addVertex(glm::vec3(next_left, 0));

this->line.addVertex(glm::vec3(next_right, 0));

this->line.addVertex(glm::vec3(right, 0));

this->face.addIndex(this->face.getNumVertices() - 1); this->face.addIndex(this->face.getNumVertices() - 2); this->face.addIndex(this->face.getNumVertices() - 3);

this->face.addIndex(this->face.getNumVertices() - 1); this->face.addIndex(this->face.getNumVertices() - 3); this->face.addIndex(this->face.getNumVertices() - 4);

this->line.addIndex(this->line.getNumVertices() - 1); this->line.addIndex(this->line.getNumVertices() - 2);

this->line.addIndex(this->line.getNumVertices() - 3); this->line.addIndex(this->line.getNumVertices() - 4);

if (radius == 150 || prev_noise_value > threshold) {

this->line.addIndex(this->line.getNumVertices() - 1); this->line.addIndex(this->line.getNumVertices() - 4);

}

if (next_noise_value > threshold) {

this->line.addIndex(this->line.getNumVertices() - 2); this->line.addIndex(this->line.getNumVertices() - 3);

}

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

void ofApp::draw() {

ofTranslate(ofGetWindowSize() * 0.5);

ofSetColor(239, 69, 74);

ofFill();

ofDrawCircle(glm::vec2(), 135);

this->face.draw();

ofSetColor(255);

ofNoFill();

ofDrawCircle(glm::vec2(), 135);

this->line.drawWireframe();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20220428

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2022年4月27日

Connect and Disconnect. Draw by openFrameworks

[ Video ]

[ About ]
伸びて縮む。

Stretch and shrink.

[ 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) {};
};

#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) {};

};

#include "ofApp.h"

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

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

	ofBackground(0);
}

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

	ofSeedRandom(39);
}

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

	int span = 30;
	for (int x = span * 0.5; x < ofGetWidth(); x += span) {

		for (int y = span * 0.5; y < ofGetHeight(); y += span) {

			auto noise_value = ofNoise(x * 0.005, y * 0.005, ofGetFrameNum() * 0.01);

			if (noise_value < 0.35) { noise_value = 0; }
			else if (noise_value < 0.6) { noise_value = ofMap(noise_value, 0.35, 0.6, 0, 1); }
			else { noise_value = 1; }

			int len = ofMap(noise_value, 0, 1, span * 0.15, span * 0.65);

			ofDrawLine(x - len, y, x + len, y);
			ofDrawLine(x, y - len, x, y + len);
		}
	}
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openframeworks");

ofBackground(0);

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

int span = 30;

for (int x = span * 0.5; x < ofGetWidth(); x += span) {

for (int y = span * 0.5; y < ofGetHeight(); y += span) {

auto noise_value = ofNoise(x * 0.005, y * 0.005, ofGetFrameNum() * 0.01);

if (noise_value < 0.35) { noise_value = 0; }

else if (noise_value < 0.6) { noise_value = ofMap(noise_value, 0.35, 0.6, 0, 1); }

else { noise_value = 1; }

int len = ofMap(noise_value, 0, 1, span * 0.15, span * 0.65);

ofDrawLine(x - len, y, x + len, y);

ofDrawLine(x, y - len, x, y + len);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20220427

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