circle – ページ 31 – プログラミング de 落描き

2022年7月21日

Rotate arrow on the circle. Draw by openFrameworks

[ Video ]

[ About ]
円状の矢印を回転させる。

Rotate arrow on the circle.

[ 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) {};

	void draw_arrow(glm::vec2 location, glm::vec2 target, float size, ofColor color);

	ofEasyCam cam;
	float noise_param;
};

#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) {};

void draw_arrow(glm::vec2 location, glm::vec2 target, float size, ofColor color);

ofEasyCam cam;

float noise_param;

};

#include "ofApp.h"

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

	ofSetFrameRate(30);
	ofSetWindowTitle("openFrameworks");

	ofBackground(255);
	ofSetLineWidth(2);
	ofEnableDepthTest();
}

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

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

	this->cam.begin();

	float radius = 150;
	for (int deg = 0; deg < 360; deg += 5) {

		auto base_location = glm::vec2(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD));
		auto arrow_radius = radius * 0.85;

		ofPushMatrix();
		ofTranslate(base_location);
		ofRotateZ(deg + 90);
		ofRotateX(ofGetFrameNum() * 6 + deg * 6);

		this->draw_arrow(glm::vec3(), glm::vec2(0, -arrow_radius), 18, ofColor(0));

		ofPopMatrix();
	}

	this->cam.end();
}

//--------------------------------------------------------------
void ofApp::draw_arrow(glm::vec2 location, glm::vec2 target, float size, ofColor color) {

	auto angle = std::atan2(target.y - location.y, target.x - location.x);
	auto distance = glm::distance(target, location);

	if (glm::length(distance) > size * 0.1) {

		ofPushMatrix();
		ofTranslate(target);

		ofSetColor(color);
		ofFill();
		ofBeginShape();
		ofVertex(glm::vec2(size * cos(angle), size * sin(angle)));
		ofVertex(glm::vec2(size * 0.25 * cos(angle + PI * 0.5), size * 0.25 * sin(angle + PI * 0.5)));
		ofVertex(glm::vec2(size * 0.25 * cos(angle - PI * 0.5), size * 0.25 * sin(angle - PI * 0.5)));
		ofEndShape();

		ofBeginShape();
		ofVertex(glm::vec2(size * 0.25 * cos(angle + PI * 0.5), size * 0.25 * sin(angle + PI * 0.5)) * 0.25);
		ofVertex(glm::vec2(size * 0.25 * cos(angle + PI * 0.5), size * 0.25 * sin(angle + PI * 0.5)) * 0.25 - glm::vec2(distance * cos(angle), distance * sin(angle)));
		ofVertex(glm::vec2(size * 0.25 * cos(angle - PI * 0.5), size * 0.25 * sin(angle - PI * 0.5)) * 0.25 - glm::vec2(distance * cos(angle), distance * sin(angle)));
		ofVertex(glm::vec2(size * 0.25 * cos(angle - PI * 0.5), size * 0.25 * sin(angle - PI * 0.5)) * 0.25);
		ofEndShape();

		ofPopMatrix();
	}

	ofDrawSphere(glm::vec3(location, 0), 5);
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(30);

ofSetWindowTitle("openFrameworks");

ofBackground(255);

ofSetLineWidth(2);

ofEnableDepthTest();

}

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

void ofApp::update() { }

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

void ofApp::draw() {

this->cam.begin();

float radius = 150;

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

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

auto arrow_radius = radius * 0.85;

ofPushMatrix();

ofTranslate(base_location);

ofRotateZ(deg + 90);

ofRotateX(ofGetFrameNum() * 6 + deg * 6);

this->draw_arrow(glm::vec3(), glm::vec2(0, -arrow_radius), 18, ofColor(0));

ofPopMatrix();

}

this->cam.end();

}

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

void ofApp::draw_arrow(glm::vec2 location, glm::vec2 target, float size, ofColor color) {

auto angle = std::atan2(target.y - location.y, target.x - location.x);

auto distance = glm::distance(target, location);

if (glm::length(distance) > size * 0.1) {

ofPushMatrix();

ofTranslate(target);

ofSetColor(color);

ofFill();

ofBeginShape();

ofVertex(glm::vec2(size * cos(angle), size * sin(angle)));

ofVertex(glm::vec2(size * 0.25 * cos(angle + PI * 0.5), size * 0.25 * sin(angle + PI * 0.5)));

ofVertex(glm::vec2(size * 0.25 * cos(angle - PI * 0.5), size * 0.25 * sin(angle - PI * 0.5)));

ofEndShape();

ofBeginShape();

ofVertex(glm::vec2(size * 0.25 * cos(angle + PI * 0.5), size * 0.25 * sin(angle + PI * 0.5)) * 0.25);

ofVertex(glm::vec2(size * 0.25 * cos(angle + PI * 0.5), size * 0.25 * sin(angle + PI * 0.5)) * 0.25 - glm::vec2(distance * cos(angle), distance * sin(angle)));

ofVertex(glm::vec2(size * 0.25 * cos(angle - PI * 0.5), size * 0.25 * sin(angle - PI * 0.5)) * 0.25 - glm::vec2(distance * cos(angle), distance * sin(angle)));

ofVertex(glm::vec2(size * 0.25 * cos(angle - PI * 0.5), size * 0.25 * sin(angle - PI * 0.5)) * 0.25);

ofEndShape();

ofPopMatrix();

}

ofDrawSphere(glm::vec3(location, 0), 5);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20220721

2022年7月7日

Vortex. Draw by openFrameworks

[ Video ]

[ About ]
渦。

Vertex.

[ 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("openFrameworks");

	ofBackground(0);
	ofSetColor(255);
	ofNoFill();
}

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

	ofSeedRandom(39);
}

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

	ofTranslate(ofGetWindowSize() * 0.5);
	
	for (int base_deg = 0; base_deg < 360; base_deg += 2) {

		vector<glm::vec2> vertices;
		auto base_radius = ofRandom(720);
		auto speed = ofRandom(3, 5);
		ofSetLineWidth(ofRandom(0.5, 3));

		for (int i = 0; i < 30; i++) {

			auto deg = base_deg + (ofGetFrameNum() + i) * 3;
			auto radius = 800 - (int)(base_radius + (ofGetFrameNum() + i) * speed) % 800;
			if (radius > 650) { continue; }
			auto vertex = glm::vec2(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD));
			vertices.push_back(vertex);
		}

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

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openFrameworks");

ofBackground(0);

ofSetColor(255);

ofNoFill();

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

ofTranslate(ofGetWindowSize() * 0.5);

for (int base_deg = 0; base_deg < 360; base_deg += 2) {

vector<glm::vec2> vertices;

auto base_radius = ofRandom(720);

auto speed = ofRandom(3, 5);

ofSetLineWidth(ofRandom(0.5, 3));

for (int i = 0; i < 30; i++) {

auto deg = base_deg + (ofGetFrameNum() + i) * 3;

auto radius = 800 - (int)(base_radius + (ofGetFrameNum() + i) * speed) % 800;

if (radius > 650) { continue; }

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

vertices.push_back(vertex);

}

ofBeginShape();

ofVertices(vertices);

ofEndShape();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20220707

2022年7月5日

velocity to rotation. draw by openFrameworks

[ Video ]

[ About ]
速度を回転に。

velocity to rotation.

[ Source ]

#pragma once
#include "ofMain.h"
#include "ofxBox2d.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) {};

	float radius;
	ofxBox2d box2d;
	vector<shared_ptr<ofxBox2dCircle>> circles;
	vector<glm::vec3> rotation_list;
};

#pragma once

#include "ofMain.h"

#include "ofxBox2d.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) {};

float radius;

ofxBox2d box2d;

vector<shared_ptr<ofxBox2dCircle>> circles;

vector<glm::vec3> rotation_list;

};

#include "ofApp.h"

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

	ofSetFrameRate(60);
	ofSetWindowTitle("openFrameworks");

	ofBackground(0);
	ofEnableDepthTest();

	this->radius = 30;

	this->box2d.init();
	this->box2d.setGravity(0, 0);
	this->box2d.createBounds(30, 30, ofGetWidth() - 60, ofGetHeight() - 60);
	this->box2d.setFPS(60);
	this->box2d.registerGrabbing();

	for (int i = 0; i < 40; i++) {

		auto circle = make_shared<ofxBox2dCircle>();
		circle->setPhysics(0.5, 0.63, 0.1);
		circle->setup(this->box2d.getWorld(), ofRandom(30, ofGetWidth() - 30), ofRandom(30, ofGetHeight() - 30), this->radius);
		this->circles.push_back(circle);
		this->rotation_list.push_back(glm::vec3(ofRandom(360), ofRandom(360), ofRandom(360)));
	}
}

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

	ofSeedRandom(39);

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

		for (int j = i + 1; j < this->circles.size(); j++) {

			float distance = this->circles[i]->getPosition().distance(this->circles[j]->getPosition());
			if (distance < this->radius * 4) {

				this->circles[i]->addForce(this->circles[i]->getPosition() - this->circles[j]->getPosition(), ofMap(distance, this->radius, this->radius * 4, 1.8, 0.002));
				this->circles[j]->addForce(this->circles[j]->getPosition() - this->circles[i]->getPosition(), ofMap(distance, this->radius, this->radius * 4, 1.8, 0.002));
			}
		}
	}

	this->box2d.update();
}

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

	auto threshold = 110;

	ofColor color;
	ofSetLineWidth(2);

	vector<glm::vec2> locations;
	for (int i = 0; i < this->circles.size(); i++) {

		glm::vec2 location = this->circles[i]->getPosition();
		locations.push_back(location);

		ofPushMatrix();
		ofTranslate(location.x, location.y);

		this->rotation_list[i].x += this->circles[i]->getVelocity().length() * 3;
		this->rotation_list[i].y += this->circles[i]->getVelocity().length() * 3;
		this->rotation_list[i].z += this->circles[i]->getVelocity().length() * 3;

		ofRotateZ(this->rotation_list[i].z);
		ofRotateY(this->rotation_list[i].y);
		ofRotateX(this->rotation_list[i].x);

		auto hue = ofMap(i, 0, this->circles.size(), 0, 255);
		color.setHsb(hue, 255, 255);
		ofSetColor(color);

		ofDrawCircle(glm::vec2(), this->radius * 0.5);

		ofPopMatrix();
	}

	ofSetColor(255);
	ofSetLineWidth(0.5);

	for (auto& location : locations) {

		int word_index = 0;
		for (auto& other : locations) {

			if (location == other) { continue; }

			auto distance = glm::distance(location, other);
			if (distance < threshold) {

				auto direction_rad = std::atan2(other.y - location.y, other.x - location.x);
				auto direction = direction_rad * RAD_TO_DEG;
				auto width = ofMap(distance, 0, threshold, 360, 0);

				ofPushMatrix();
				ofTranslate(location);

				ofNoFill();
				ofBeginShape();
				for (auto deg = direction - width * 0.5; deg <= direction + width * 0.5; deg++) {

					ofVertex(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD));
				}
				ofEndShape();

				ofDrawLine(glm::vec2(radius * cos(direction * DEG_TO_RAD), radius * sin(direction * DEG_TO_RAD)),
					(other - location) + glm::vec2(radius * cos((180 + direction) * DEG_TO_RAD), radius * sin((180 + direction) * DEG_TO_RAD)));

				ofPopMatrix();
			}
		}
	}
}

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

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

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#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openFrameworks");

ofBackground(0);

ofEnableDepthTest();

this->radius = 30;

this->box2d.init();

this->box2d.setGravity(0, 0);

this->box2d.createBounds(30, 30, ofGetWidth() - 60, ofGetHeight() - 60);

this->box2d.setFPS(60);

this->box2d.registerGrabbing();

for (int i = 0; i < 40; i++) {

auto circle = make_shared<ofxBox2dCircle>();

circle->setPhysics(0.5, 0.63, 0.1);

circle->setup(this->box2d.getWorld(), ofRandom(30, ofGetWidth() - 30), ofRandom(30, ofGetHeight() - 30), this->radius);

this->circles.push_back(circle);

this->rotation_list.push_back(glm::vec3(ofRandom(360), ofRandom(360), ofRandom(360)));

}

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

void ofApp::update() {

ofSeedRandom(39);

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

for (int j = i + 1; j < this->circles.size(); j++) {

float distance = this->circles[i]->getPosition().distance(this->circles[j]->getPosition());

if (distance < this->radius * 4) {

this->circles[i]->addForce(this->circles[i]->getPosition() - this->circles[j]->getPosition(), ofMap(distance, this->radius, this->radius * 4, 1.8, 0.002));

this->circles[j]->addForce(this->circles[j]->getPosition() - this->circles[i]->getPosition(), ofMap(distance, this->radius, this->radius * 4, 1.8, 0.002));

}

this->box2d.update();

}

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

void ofApp::draw() {

auto threshold = 110;

ofColor color;

ofSetLineWidth(2);

vector<glm::vec2> locations;

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

glm::vec2 location = this->circles[i]->getPosition();

locations.push_back(location);

ofPushMatrix();

ofTranslate(location.x, location.y);

this->rotation_list[i].x += this->circles[i]->getVelocity().length() * 3;

this->rotation_list[i].y += this->circles[i]->getVelocity().length() * 3;

this->rotation_list[i].z += this->circles[i]->getVelocity().length() * 3;

ofRotateZ(this->rotation_list[i].z);

ofRotateY(this->rotation_list[i].y);

ofRotateX(this->rotation_list[i].x);

auto hue = ofMap(i, 0, this->circles.size(), 0, 255);

color.setHsb(hue, 255, 255);

ofSetColor(color);

ofDrawCircle(glm::vec2(), this->radius * 0.5);

ofPopMatrix();

}

ofSetColor(255);

ofSetLineWidth(0.5);

for (auto& location : locations) {

int word_index = 0;

for (auto& other : locations) {

if (location == other) { continue; }

auto distance = glm::distance(location, other);

if (distance < threshold) {

auto direction_rad = std::atan2(other.y - location.y, other.x - location.x);

auto direction = direction_rad * RAD_TO_DEG;

auto width = ofMap(distance, 0, threshold, 360, 0);

ofPushMatrix();

ofTranslate(location);

ofNoFill();

ofBeginShape();

for (auto deg = direction - width * 0.5; deg <= direction + width * 0.5; deg++) {

ofVertex(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD));

}

ofEndShape();

ofDrawLine(glm::vec2(radius * cos(direction * DEG_TO_RAD), radius * sin(direction * DEG_TO_RAD)),

(other - location) + glm::vec2(radius * cos((180 + direction) * DEG_TO_RAD), radius * sin((180 + direction) * DEG_TO_RAD)));

ofPopMatrix();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20220705

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