openFrameworks – ページ 618 – プログラミング de 落描き

2020年9月2日2020年9月2日

Sphere by a swarm of bands. Draw by openFrameworks

[ Video ]

[ About ]
帯の群れによる球体。

Sphere by a swarm of bands.

[ 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;

	vector<ofMesh> face_list;
	vector<ofMesh> frame_list;
	vector<glm::vec3> direction_list;
	vector<glm::vec3> noise_seed_list;
	vector<float> noise_step_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 windowResized(int w, int h) {};

void dragEvent(ofDragInfo dragInfo) {};

void gotMessage(ofMessage msg) {};

ofEasyCam cam;

vector<ofMesh> face_list;

vector<ofMesh> frame_list;

vector<glm::vec3> direction_list;

vector<glm::vec3> noise_seed_list;

vector<float> noise_step_list;

};

#include "ofApp.h"

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

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

	ofBackground(239);
	ofSetLineWidth(2);
	ofEnableDepthTest();

	for (int i = 0; i < 200; i++) {

		ofMesh mesh, frame;
		frame.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);
		glm::vec3 base = glm::vec3(ofRandom(-100, 100), ofRandom(-100, 100), ofRandom(-100, 100));
		base = glm::normalize(base) * 250;
		switch ((int)ofRandom(3)) {
		case 0:
			mesh.addVertex(base + glm::vec3(5, 0, 0));
			mesh.addVertex(base + glm::vec3(-5, 0, 0));
			frame.addVertex(base + glm::vec3(5, 0, 0));
			frame.addVertex(base + glm::vec3(-5, 0, 0));
			break;
		case 1:
			mesh.addVertex(base + glm::vec3(0, 5, 0));
			mesh.addVertex(base + glm::vec3(0, -5, 0));
			frame.addVertex(base + glm::vec3(0, 5, 0));
			frame.addVertex(base + glm::vec3(0, -5, 0));
			break;
		case 2:
			mesh.addVertex(base + glm::vec3(0, 0, 5));
			mesh.addVertex(base + glm::vec3(0, 0, -5));
			frame.addVertex(base + glm::vec3(0, 0, 5));
			frame.addVertex(base + glm::vec3(0, 0, -5));
			break;
		}

		frame.addIndex(0);
		frame.addIndex(1);

		this->face_list.push_back(mesh);
		this->frame_list.push_back(frame);

		auto direction = glm::vec3(ofRandom(-1, 1), ofRandom(-1, 1), ofRandom(-1, 1));
		direction = glm::normalize(direction) * 4;
		this->direction_list.push_back(direction);

		auto noise_seed = glm::vec3(glm::vec3(ofRandom(1000), ofRandom(1000), ofRandom(1000)));
		this->noise_seed_list.push_back(noise_seed);

		this->noise_step_list.push_back(0.f);
	}
}

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

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

		while (true) {

			this->noise_step_list[i] += 0.01;

			auto angle_x = ofMap(ofNoise(this->noise_seed_list[i].x, this->noise_step_list[i]), 0, 1, -PI, PI);
			auto angle_y = ofMap(ofNoise(this->noise_seed_list[i].y, this->noise_step_list[i]), 0, 1, -PI, PI);
			auto angle_z = ofMap(ofNoise(this->noise_seed_list[i].z, this->noise_step_list[i]), 0, 1, -PI, PI);

			auto rotation_x = glm::rotate(glm::mat4(), angle_x, glm::vec3(1, 0, 0));
			auto rotation_y = glm::rotate(glm::mat4(), angle_y, glm::vec3(0, 1, 0));
			auto rotation_z = glm::rotate(glm::mat4(), angle_z, glm::vec3(0, 0, 1));

			glm::vec3 rotate_direction = glm::vec4(this->direction_list[i], 0) * rotation_z * rotation_y * rotation_x;

			auto right = this->face_list[i].getVertex(this->face_list[i].getNumVertices() - 2);
			auto left = this->face_list[i].getVertex(this->face_list[i].getNumVertices() - 1);
			auto center = (right + left) / 2;

			auto feature = center + rotate_direction;
			if (glm::length(feature) < 300 && glm::length(feature) > 250) {

				this->face_list[i].addVertex(right + rotate_direction);
				this->face_list[i].addVertex(left + rotate_direction);

				this->frame_list[i].addVertex(right + rotate_direction);
				this->frame_list[i].addVertex(left + rotate_direction);

				break;
			}
		}

		if (this->face_list[i].getNumVertices() > 150) {

			this->face_list[i].removeVertex(0);
			this->face_list[i].removeVertex(1);
		}
		else {

			int index = this->face_list[i].getNumVertices() - 1;
			this->face_list[i].addIndex(index); this->face_list[i].addIndex(index - 2); this->face_list[i].addIndex(index - 3);
			this->face_list[i].addIndex(index); this->face_list[i].addIndex(index - 1); this->face_list[i].addIndex(index - 3);
		}

		if (this->frame_list[i].getNumVertices() > 150) {

			this->frame_list[i].removeVertex(0);
			this->frame_list[i].removeVertex(1);
		}
		else {

			int index = this->frame_list[i].getNumVertices() - 1;
			this->frame_list[i].addIndex(index); this->frame_list[i].addIndex(index - 2);
			this->frame_list[i].addIndex(index - 1); this->frame_list[i].addIndex(index - 3);

			if (index == 149) {

				this->frame_list[i].addIndex(148);
				this->frame_list[i].addIndex(149);
			}
		}
	}
}

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

	this->cam.begin();
	ofRotateY(ofGetFrameNum() * 0.25);

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

		ofSetColor(239);
		this->face_list[i].draw();

		ofSetColor(39);
		this->frame_list[i].drawWireframe();
	}

	this->cam.end();
}

//--------------------------------------------------------------
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(239);

ofSetLineWidth(2);

ofEnableDepthTest();

for (int i = 0; i < 200; i++) {

ofMesh mesh, frame;

frame.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);

glm::vec3 base = glm::vec3(ofRandom(-100, 100), ofRandom(-100, 100), ofRandom(-100, 100));

base = glm::normalize(base) * 250;

switch ((int)ofRandom(3)) {

case 0:

mesh.addVertex(base + glm::vec3(5, 0, 0));

mesh.addVertex(base + glm::vec3(-5, 0, 0));

frame.addVertex(base + glm::vec3(5, 0, 0));

frame.addVertex(base + glm::vec3(-5, 0, 0));

break;

case 1:

mesh.addVertex(base + glm::vec3(0, 5, 0));

mesh.addVertex(base + glm::vec3(0, -5, 0));

frame.addVertex(base + glm::vec3(0, 5, 0));

frame.addVertex(base + glm::vec3(0, -5, 0));

break;

case 2:

mesh.addVertex(base + glm::vec3(0, 0, 5));

mesh.addVertex(base + glm::vec3(0, 0, -5));

frame.addVertex(base + glm::vec3(0, 0, 5));

frame.addVertex(base + glm::vec3(0, 0, -5));

break;

}

frame.addIndex(0);

frame.addIndex(1);

this->face_list.push_back(mesh);

this->frame_list.push_back(frame);

auto direction = glm::vec3(ofRandom(-1, 1), ofRandom(-1, 1), ofRandom(-1, 1));

direction = glm::normalize(direction) * 4;

this->direction_list.push_back(direction);

auto noise_seed = glm::vec3(glm::vec3(ofRandom(1000), ofRandom(1000), ofRandom(1000)));

this->noise_seed_list.push_back(noise_seed);

this->noise_step_list.push_back(0.f);

}

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

void ofApp::update() {

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

while (true) {

this->noise_step_list[i] += 0.01;

auto angle_x = ofMap(ofNoise(this->noise_seed_list[i].x, this->noise_step_list[i]), 0, 1, -PI, PI);

auto angle_y = ofMap(ofNoise(this->noise_seed_list[i].y, this->noise_step_list[i]), 0, 1, -PI, PI);

auto angle_z = ofMap(ofNoise(this->noise_seed_list[i].z, this->noise_step_list[i]), 0, 1, -PI, PI);

auto rotation_x = glm::rotate(glm::mat4(), angle_x, glm::vec3(1, 0, 0));

auto rotation_y = glm::rotate(glm::mat4(), angle_y, glm::vec3(0, 1, 0));

auto rotation_z = glm::rotate(glm::mat4(), angle_z, glm::vec3(0, 0, 1));

glm::vec3 rotate_direction = glm::vec4(this->direction_list[i], 0) * rotation_z * rotation_y * rotation_x;

auto right = this->face_list[i].getVertex(this->face_list[i].getNumVertices() - 2);

auto left = this->face_list[i].getVertex(this->face_list[i].getNumVertices() - 1);

auto center = (right + left) / 2;

auto feature = center + rotate_direction;

if (glm::length(feature) < 300 && glm::length(feature) > 250) {

this->face_list[i].addVertex(right + rotate_direction);

this->face_list[i].addVertex(left + rotate_direction);

this->frame_list[i].addVertex(right + rotate_direction);

this->frame_list[i].addVertex(left + rotate_direction);

break;

}

if (this->face_list[i].getNumVertices() > 150) {

this->face_list[i].removeVertex(0);

this->face_list[i].removeVertex(1);

}

else {

int index = this->face_list[i].getNumVertices() - 1;

this->face_list[i].addIndex(index); this->face_list[i].addIndex(index - 2); this->face_list[i].addIndex(index - 3);

this->face_list[i].addIndex(index); this->face_list[i].addIndex(index - 1); this->face_list[i].addIndex(index - 3);

}

if (this->frame_list[i].getNumVertices() > 150) {

this->frame_list[i].removeVertex(0);

this->frame_list[i].removeVertex(1);

}

else {

int index = this->frame_list[i].getNumVertices() - 1;

this->frame_list[i].addIndex(index); this->frame_list[i].addIndex(index - 2);

this->frame_list[i].addIndex(index - 1); this->frame_list[i].addIndex(index - 3);

if (index == 149) {

this->frame_list[i].addIndex(148);

this->frame_list[i].addIndex(149);

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateY(ofGetFrameNum() * 0.25);

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

ofSetColor(239);

this->face_list[i].draw();

ofSetColor(39);

this->frame_list[i].drawWireframe();

}

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20200902

2020年9月1日2020年9月1日

Show enclosed particles. Draw by openFrameworks

[ Video ]

[ About ]
囲ったパーティクルを表示する。

Show enclosed particles.

[ 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(239);
	ofSetColor(39);
	ofSetLineWidth(3);
}

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

	ofSeedRandom(39);
}

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

	vector<glm::vec2> location_list;

	int span = 36;
	for(int x = span * 0.5; x < ofGetWidth(); x += span){

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

			location_list.push_back(glm::vec2(
				x + ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.001), 0, 1, span * -0.4, span * 0.4),
				y + ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.001), 0, 1, span * -0.4, span * 0.4)));
		}
	}

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

		float max_alpha = 0;
		for (int k = 0; k < location_list.size(); k++) {

			if (i == k) { continue; }

			auto distance = glm::distance(location_list[i], location_list[k]);
			if (distance < span * 0.85) {

				vector<glm::vec2> vertices;
				auto direction_rad = std::atan2(location_list[k].y - location_list[i].y, location_list[k].x - location_list[i].x);
				auto direction_deg = direction_rad * RAD_TO_DEG + 90;

				int radius = 8;
				for (int deg = direction_deg; deg <= direction_deg + 180; deg += 3) {

					vertices.push_back(location_list[i] + glm::vec2(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD)));
				}

				for (int deg = direction_deg + 180; deg <= direction_deg + 360; deg += 3) {

					vertices.push_back(location_list[k] + glm::vec2(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD)));
				}

				auto alpha = distance < span * 0.6 ? 255 : ofMap(distance, span * 0.6, span * 0.85, 255, 0);
				ofSetColor(39, alpha);
				ofNoFill();
				ofBeginShape();
				ofVertices(vertices);
				ofEndShape(true);

				if (alpha > max_alpha) { max_alpha = alpha; }
			}
		}

		ofFill();
		ofSetColor(39, max_alpha);
		ofDrawCircle(location_list[i], 4);
	}
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openframeworks");

ofBackground(239);

ofSetColor(39);

ofSetLineWidth(3);

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

vector<glm::vec2> location_list;

int span = 36;

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

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

location_list.push_back(glm::vec2(

x + ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.001), 0, 1, span * -0.4, span * 0.4),

y + ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.001), 0, 1, span * -0.4, span * 0.4)));

}

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

float max_alpha = 0;

for (int k = 0; k < location_list.size(); k++) {

if (i == k) { continue; }

auto distance = glm::distance(location_list[i], location_list[k]);

if (distance < span * 0.85) {

vector<glm::vec2> vertices;

auto direction_rad = std::atan2(location_list[k].y - location_list[i].y, location_list[k].x - location_list[i].x);

auto direction_deg = direction_rad * RAD_TO_DEG + 90;

int radius = 8;

for (int deg = direction_deg; deg <= direction_deg + 180; deg += 3) {

vertices.push_back(location_list[i] + glm::vec2(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD)));

}

for (int deg = direction_deg + 180; deg <= direction_deg + 360; deg += 3) {

vertices.push_back(location_list[k] + glm::vec2(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD)));

}

auto alpha = distance < span * 0.6 ? 255 : ofMap(distance, span * 0.6, span * 0.85, 255, 0);

ofSetColor(39, alpha);

ofNoFill();

ofBeginShape();

ofVertices(vertices);

ofEndShape(true);

if (alpha > max_alpha) { max_alpha = alpha; }

}

ofFill();

ofSetColor(39, max_alpha);

ofDrawCircle(location_list[i], 4);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20200901

2020年8月31日2020年8月31日

Surround near particle. Draw by openFrameworks

[ Video ]

[ About ]
近いパーティクルを囲う。

Surround near particle.

[ 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(239);
	ofSetColor(39);
	ofSetLineWidth(3);
}

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

	ofSeedRandom(39);
}

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

	vector<glm::vec2> location_list;

	for (int i = 0; i < 20; i++) {

		location_list.push_back(glm::vec2(ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.0035), 0, 1, 0, ofGetWidth()), ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.0035), 0, 1, 0, ofGetWidth())));
	}

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

		ofFill();
		ofDrawCircle(location_list[i], 10);
		for (int k = i + 1; k < location_list.size(); k++) {

			auto distance = glm::distance(location_list[i], location_list[k]);
			if (distance < 100) {

				vector<glm::vec2> vertices;
				auto direction_rad = std::atan2(location_list[k].y - location_list[i].y, location_list[k].x - location_list[i].x);
				auto direction_deg = direction_rad * RAD_TO_DEG + 90;


				for (int deg = direction_deg; deg <= direction_deg + 180; deg += 3) {

					vertices.push_back(location_list[i] + glm::vec2(15 * cos(deg * DEG_TO_RAD), 15 * sin(deg * DEG_TO_RAD)));
				}

				for (int deg = direction_deg + 180; deg <= direction_deg + 360; deg += 3) {

					vertices.push_back(location_list[k] + glm::vec2(15 * cos(deg * DEG_TO_RAD), 15 * sin(deg * DEG_TO_RAD)));
				}

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

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openframeworks");

ofBackground(239);

ofSetColor(39);

ofSetLineWidth(3);

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

vector<glm::vec2> location_list;

for (int i = 0; i < 20; i++) {

location_list.push_back(glm::vec2(ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.0035), 0, 1, 0, ofGetWidth()), ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.0035), 0, 1, 0, ofGetWidth())));

}

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

ofFill();

ofDrawCircle(location_list[i], 10);

for (int k = i + 1; k < location_list.size(); k++) {

auto distance = glm::distance(location_list[i], location_list[k]);

if (distance < 100) {

vector<glm::vec2> vertices;

auto direction_rad = std::atan2(location_list[k].y - location_list[i].y, location_list[k].x - location_list[i].x);

auto direction_deg = direction_rad * RAD_TO_DEG + 90;

for (int deg = direction_deg; deg <= direction_deg + 180; deg += 3) {

vertices.push_back(location_list[i] + glm::vec2(15 * cos(deg * DEG_TO_RAD), 15 * sin(deg * DEG_TO_RAD)));

}

for (int deg = direction_deg + 180; deg <= direction_deg + 360; deg += 3) {

vertices.push_back(location_list[k] + glm::vec2(15 * cos(deg * DEG_TO_RAD), 15 * sin(deg * DEG_TO_RAD)));

}

ofNoFill();

ofBeginShape();

ofVertices(vertices);

ofEndShape(true);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20200831

2025年9月
月	火	水	木	金	土	日
1	2	3	4	5	6	7
8	9	10	11	12	13	14
15	16	17	18	19	20	21
22	23	24	25	26	27	28
29	30