ofMesh – ページ 171 – プログラミング de 落描き

2020年9月5日2020年9月5日

Noise x Circle. Draw by openFrameworks

[ Video ]

[ About ]
ノイズ x サークル。

Noise x 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 windowResized(int w, int h) {};
	void dragEvent(ofDragInfo dragInfo) {};
	void gotMessage(ofMessage msg) {};

	void setRingToMesh(ofMesh& face_target, ofMesh& frame_target, glm::vec3 location, float radius, float width, float height, int deg_start, int deg_end);

	ofEasyCam cam;
	ofMesh face, frame;
};

#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) {};

void setRingToMesh(ofMesh& face_target, ofMesh& frame_target, glm::vec3 location, float radius, float width, float height, int deg_start, int deg_end);

ofEasyCam cam;

ofMesh face, frame;

};

#include "ofApp.h"

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

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

	ofBackground(239);
	ofEnableDepthTest();

	this->frame.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);
}

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

	ofSeedRandom(39);

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

	int deg_span = 30;
	for (int radius = 60; radius <= 360; radius += 30) {

		int deg_start = 0;
		int deg_end = 0;
		int tmp_deg = 0;
		auto noise_seed = ofRandom(1000);
		for (int deg = 0; deg < 360 + tmp_deg; deg += 1) {

			auto noise_value = ofNoise(glm::vec4(noise_seed, cos(deg * DEG_TO_RAD), sin(deg * DEG_TO_RAD), ofGetFrameNum() * 0.01));

			if (noise_value < 0.55) {

				deg_end = deg;

				if (deg == 0) {

					while (true) {

						tmp_deg -= 1;
						auto tmp_noise_value = ofNoise(glm::vec4(noise_seed, cos(tmp_deg * DEG_TO_RAD), sin(tmp_deg * DEG_TO_RAD), ofGetFrameNum() * 0.01));
						if (tmp_noise_value > 0.55 || tmp_deg < -360) { break; }
						deg_start = tmp_deg;
					}
				}
			}
			else {

				if (deg_start < deg_end) {

					this->setRingToMesh(this->face, this->frame, glm::vec3(0, 0, 8), radius, 30, 16, deg_start, deg_end);
				}

				deg_start = deg;
				deg_end = deg;
			}
		}

		if (deg_start != deg_end) {

			this->setRingToMesh(this->face, this->frame, glm::vec3(0, 0, 8), radius, 30, 16, deg_start, deg_end);
		}
	}
}

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

	this->cam.begin();
	ofRotateX(130);

	ofSetColor(39);
	this->face.draw();

	ofSetColor(239);
	this->frame.drawWireframe();

	this->cam.end();
}

//--------------------------------------------------------------
void ofApp::setRingToMesh(ofMesh& face_target, ofMesh& frame_target, glm::vec3 location, float radius, float width, float height, int deg_start, int deg_end) {

	if (deg_start == deg_end) { return; }

	int index = face_target.getNumVertices();

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

		auto face_index = face_target.getNumVertices();

		vector<glm::vec3> vertices;
		vertices.push_back(glm::vec3((radius + width * 0.5) * cos(deg * DEG_TO_RAD), (radius + width * 0.5) * sin(deg * DEG_TO_RAD), height * -0.5));
		vertices.push_back(glm::vec3((radius + width * 0.5) * cos((deg + 1) * DEG_TO_RAD), (radius + width * 0.5) * sin((deg + 1) * DEG_TO_RAD), height * -0.5));
		vertices.push_back(glm::vec3((radius + width * 0.5) * cos((deg + 1) * DEG_TO_RAD), (radius + width * 0.5) * sin((deg + 1) * DEG_TO_RAD), height * 0.5));
		vertices.push_back(glm::vec3((radius + width * 0.5) * cos(deg * DEG_TO_RAD), (radius + width * 0.5) * sin(deg * DEG_TO_RAD), height * 0.5));

		vertices.push_back(glm::vec3((radius - width * 0.5) * cos(deg * DEG_TO_RAD), (radius - width * 0.5) * sin(deg * DEG_TO_RAD), height * -0.5));
		vertices.push_back(glm::vec3((radius - width * 0.5) * cos((deg + 1) * DEG_TO_RAD), (radius - width * 0.5) * sin((deg + 1) * DEG_TO_RAD), height * -0.5));
		vertices.push_back(glm::vec3((radius - width * 0.5) * cos((deg + 1) * DEG_TO_RAD), (radius - width * 0.5) * sin((deg + 1) * DEG_TO_RAD), height * 0.5));
		vertices.push_back(glm::vec3((radius - width * 0.5) * cos(deg * DEG_TO_RAD), (radius - width * 0.5) * sin(deg * DEG_TO_RAD), height * 0.5));

		for (auto& vertex : vertices) {

			vertex += location;
		}

		face_target.addVertices(vertices);

		face_target.addIndex(face_index + 0); face_target.addIndex(face_index + 1); face_target.addIndex(face_index + 2);
		face_target.addIndex(face_index + 0); face_target.addIndex(face_index + 2); face_target.addIndex(face_index + 3);

		face_target.addIndex(face_index + 4); face_target.addIndex(face_index + 5); face_target.addIndex(face_index + 6);
		face_target.addIndex(face_index + 4); face_target.addIndex(face_index + 6); face_target.addIndex(face_index + 7);

		face_target.addIndex(face_index + 0); face_target.addIndex(face_index + 4); face_target.addIndex(face_index + 5);
		face_target.addIndex(face_index + 0); face_target.addIndex(face_index + 5); face_target.addIndex(face_index + 1);

		face_target.addIndex(face_index + 3); face_target.addIndex(face_index + 7); face_target.addIndex(face_index + 6);
		face_target.addIndex(face_index + 3); face_target.addIndex(face_index + 6); face_target.addIndex(face_index + 2);

		auto frame_index = frame_target.getNumVertices();

		frame_target.addVertices(vertices);

		frame_target.addIndex(frame_index + 0); frame_target.addIndex(frame_index + 1);
		frame_target.addIndex(frame_index + 2); frame_target.addIndex(frame_index + 3);
		frame_target.addIndex(frame_index + 4); frame_target.addIndex(frame_index + 5);
		frame_target.addIndex(frame_index + 6); frame_target.addIndex(frame_index + 7);
	}

	face_target.addIndex(index + 0); face_target.addIndex(index + 3); face_target.addIndex(index + 7);
	face_target.addIndex(index + 0); face_target.addIndex(index + 7); face_target.addIndex(index + 4);

	frame_target.addIndex(index + 0); frame_target.addIndex(index + 3);
	frame_target.addIndex(index + 0); frame_target.addIndex(index + 4);
	frame_target.addIndex(index + 7); frame_target.addIndex(index + 3);
	frame_target.addIndex(index + 7); frame_target.addIndex(index + 4);

	index = frame_target.getNumVertices() - 8;

	face_target.addIndex(index + 1); face_target.addIndex(index + 2); face_target.addIndex(index + 6);
	face_target.addIndex(index + 1); face_target.addIndex(index + 6); face_target.addIndex(index + 5);

	frame_target.addIndex(index + 1); frame_target.addIndex(index + 2);
	frame_target.addIndex(index + 1); frame_target.addIndex(index + 5);
	frame_target.addIndex(index + 6); frame_target.addIndex(index + 2);
	frame_target.addIndex(index + 6); frame_target.addIndex(index + 5);
}

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

ofEnableDepthTest();

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

}

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

void ofApp::update() {

ofSeedRandom(39);

this->face.clear();

this->frame.clear();

int deg_span = 30;

for (int radius = 60; radius <= 360; radius += 30) {

int deg_start = 0;

int deg_end = 0;

int tmp_deg = 0;

auto noise_seed = ofRandom(1000);

for (int deg = 0; deg < 360 + tmp_deg; deg += 1) {

auto noise_value = ofNoise(glm::vec4(noise_seed, cos(deg * DEG_TO_RAD), sin(deg * DEG_TO_RAD), ofGetFrameNum() * 0.01));

if (noise_value < 0.55) {

deg_end = deg;

if (deg == 0) {

while (true) {

tmp_deg -= 1;

auto tmp_noise_value = ofNoise(glm::vec4(noise_seed, cos(tmp_deg * DEG_TO_RAD), sin(tmp_deg * DEG_TO_RAD), ofGetFrameNum() * 0.01));

if (tmp_noise_value > 0.55 || tmp_deg < -360) { break; }

deg_start = tmp_deg;

}

else {

if (deg_start < deg_end) {

this->setRingToMesh(this->face, this->frame, glm::vec3(0, 0, 8), radius, 30, 16, deg_start, deg_end);

}

deg_start = deg;

deg_end = deg;

}

if (deg_start != deg_end) {

this->setRingToMesh(this->face, this->frame, glm::vec3(0, 0, 8), radius, 30, 16, deg_start, deg_end);

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateX(130);

ofSetColor(39);

this->face.draw();

ofSetColor(239);

this->frame.drawWireframe();

this->cam.end();

}

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

void ofApp::setRingToMesh(ofMesh& face_target, ofMesh& frame_target, glm::vec3 location, float radius, float width, float height, int deg_start, int deg_end) {

if (deg_start == deg_end) { return; }

int index = face_target.getNumVertices();

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

auto face_index = face_target.getNumVertices();

vector<glm::vec3> vertices;

vertices.push_back(glm::vec3((radius + width * 0.5) * cos(deg * DEG_TO_RAD), (radius + width * 0.5) * sin(deg * DEG_TO_RAD), height * -0.5));

vertices.push_back(glm::vec3((radius + width * 0.5) * cos((deg + 1) * DEG_TO_RAD), (radius + width * 0.5) * sin((deg + 1) * DEG_TO_RAD), height * -0.5));

vertices.push_back(glm::vec3((radius + width * 0.5) * cos((deg + 1) * DEG_TO_RAD), (radius + width * 0.5) * sin((deg + 1) * DEG_TO_RAD), height * 0.5));

vertices.push_back(glm::vec3((radius + width * 0.5) * cos(deg * DEG_TO_RAD), (radius + width * 0.5) * sin(deg * DEG_TO_RAD), height * 0.5));

vertices.push_back(glm::vec3((radius - width * 0.5) * cos(deg * DEG_TO_RAD), (radius - width * 0.5) * sin(deg * DEG_TO_RAD), height * -0.5));

vertices.push_back(glm::vec3((radius - width * 0.5) * cos((deg + 1) * DEG_TO_RAD), (radius - width * 0.5) * sin((deg + 1) * DEG_TO_RAD), height * -0.5));

vertices.push_back(glm::vec3((radius - width * 0.5) * cos((deg + 1) * DEG_TO_RAD), (radius - width * 0.5) * sin((deg + 1) * DEG_TO_RAD), height * 0.5));

vertices.push_back(glm::vec3((radius - width * 0.5) * cos(deg * DEG_TO_RAD), (radius - width * 0.5) * sin(deg * DEG_TO_RAD), height * 0.5));

for (auto& vertex : vertices) {

vertex += location;

}

face_target.addVertices(vertices);

face_target.addIndex(face_index + 0); face_target.addIndex(face_index + 1); face_target.addIndex(face_index + 2);

face_target.addIndex(face_index + 0); face_target.addIndex(face_index + 2); face_target.addIndex(face_index + 3);

face_target.addIndex(face_index + 4); face_target.addIndex(face_index + 5); face_target.addIndex(face_index + 6);

face_target.addIndex(face_index + 4); face_target.addIndex(face_index + 6); face_target.addIndex(face_index + 7);

face_target.addIndex(face_index + 0); face_target.addIndex(face_index + 4); face_target.addIndex(face_index + 5);

face_target.addIndex(face_index + 0); face_target.addIndex(face_index + 5); face_target.addIndex(face_index + 1);

face_target.addIndex(face_index + 3); face_target.addIndex(face_index + 7); face_target.addIndex(face_index + 6);

face_target.addIndex(face_index + 3); face_target.addIndex(face_index + 6); face_target.addIndex(face_index + 2);

auto frame_index = frame_target.getNumVertices();

frame_target.addVertices(vertices);

frame_target.addIndex(frame_index + 0); frame_target.addIndex(frame_index + 1);

frame_target.addIndex(frame_index + 2); frame_target.addIndex(frame_index + 3);

frame_target.addIndex(frame_index + 4); frame_target.addIndex(frame_index + 5);

frame_target.addIndex(frame_index + 6); frame_target.addIndex(frame_index + 7);

}

face_target.addIndex(index + 0); face_target.addIndex(index + 3); face_target.addIndex(index + 7);

face_target.addIndex(index + 0); face_target.addIndex(index + 7); face_target.addIndex(index + 4);

frame_target.addIndex(index + 0); frame_target.addIndex(index + 3);

frame_target.addIndex(index + 0); frame_target.addIndex(index + 4);

frame_target.addIndex(index + 7); frame_target.addIndex(index + 3);

frame_target.addIndex(index + 7); frame_target.addIndex(index + 4);

index = frame_target.getNumVertices() - 8;

face_target.addIndex(index + 1); face_target.addIndex(index + 2); face_target.addIndex(index + 6);

face_target.addIndex(index + 1); face_target.addIndex(index + 6); face_target.addIndex(index + 5);

frame_target.addIndex(index + 1); frame_target.addIndex(index + 2);

frame_target.addIndex(index + 1); frame_target.addIndex(index + 5);

frame_target.addIndex(index + 6); frame_target.addIndex(index + 2);

frame_target.addIndex(index + 6); frame_target.addIndex(index + 5);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20200905

2020年9月4日2020年9月4日

wriggling mass. Draw by openFrameworks

[ Video ]

[ About ]
うごめく塊。

wriggling mass.

[ 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;

	ofFbo fbo;
	ofPixels pixels;
};

#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;

ofFbo fbo;

ofPixels pixels;

};

#include "ofApp.h"

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

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

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

	this->fbo.allocate(ofGetWidth(), ofGetHeight());
	this->fbo.begin();
	ofClear(0);

	float radius = 350;
	vector<glm::vec2> vertices;
	for (int deg = 0; deg < 360; deg += 3) {

		glm::vec2 noise_point = glm::vec2(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD));
		float noise_radius = ofMap(ofNoise(noise_point.x * 0.003, noise_point.y * 0.003, ofGetFrameNum() * 0.003), 0, 1, radius * 0.3, radius);

		vertices.push_back(glm::vec2(noise_radius * cos(deg * DEG_TO_RAD) + ofGetWidth() * 0.5, noise_radius * sin(deg * DEG_TO_RAD) + ofGetHeight() * 0.5));
	}

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

	this->fbo.end();
	this->fbo.readToPixels(this->pixels);

	for (int i = 0; i < 350; i++) {

		ofMesh mesh, frame;
		frame.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);

		glm::vec3 base;
		while (true) {
		
			int x = ofRandom(ofGetWidth());
			int y = ofRandom(ofGetHeight());
			if (this->pixels.getColor(x, y) != ofColor(0, 0)) {

				base = glm::vec3(x, y, ofRandom(-30, 30));
				break;
			}
		}
		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) * 5;
		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() {

	this->fbo.begin();
	ofClear(0);

	float radius = 350;
	vector<glm::vec2> vertices;
	for (int deg = 0; deg < 360; deg += 3) {

		glm::vec2 noise_point = glm::vec2(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD));
		float noise_radius = ofMap(ofNoise(noise_point.x * 0.003, noise_point.y * 0.003, ofGetFrameNum() * 0.005), 0, 1, radius * 0.3, radius);

		vertices.push_back(glm::vec2(noise_radius * cos(deg * DEG_TO_RAD) + ofGetWidth() * 0.5, noise_radius * sin(deg * DEG_TO_RAD) + ofGetHeight() * 0.5));
	}

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

	this->fbo.end();
	this->fbo.readToPixels(this->pixels);

	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;
			int x = feature.x;
			int y = feature.y;
			if (feature.z > -30 && feature.z < 30) {
			
				if (this->pixels.getColor(x, y) != ofColor(0, 0)) {

					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() > 50) {

			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() > 50) {

			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 == 49) {

				this->frame_list[i].addIndex(48);
				this->frame_list[i].addIndex(49);
			}
		}
	}
}

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

	this->cam.begin();
	ofRotateX(180);

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

	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();

this->fbo.allocate(ofGetWidth(), ofGetHeight());

this->fbo.begin();

ofClear(0);

float radius = 350;

vector<glm::vec2> vertices;

for (int deg = 0; deg < 360; deg += 3) {

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

float noise_radius = ofMap(ofNoise(noise_point.x * 0.003, noise_point.y * 0.003, ofGetFrameNum() * 0.003), 0, 1, radius * 0.3, radius);

vertices.push_back(glm::vec2(noise_radius * cos(deg * DEG_TO_RAD) + ofGetWidth() * 0.5, noise_radius * sin(deg * DEG_TO_RAD) + ofGetHeight() * 0.5));

}

ofFill();

ofBeginShape();

ofVertices(vertices);

ofEndShape(true);

this->fbo.end();

this->fbo.readToPixels(this->pixels);

for (int i = 0; i < 350; i++) {

ofMesh mesh, frame;

frame.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);

glm::vec3 base;

while (true) {

int x = ofRandom(ofGetWidth());

int y = ofRandom(ofGetHeight());

if (this->pixels.getColor(x, y) != ofColor(0, 0)) {

base = glm::vec3(x, y, ofRandom(-30, 30));

break;

}

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) * 5;

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() {

this->fbo.begin();

ofClear(0);

float radius = 350;

vector<glm::vec2> vertices;

for (int deg = 0; deg < 360; deg += 3) {

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

float noise_radius = ofMap(ofNoise(noise_point.x * 0.003, noise_point.y * 0.003, ofGetFrameNum() * 0.005), 0, 1, radius * 0.3, radius);

vertices.push_back(glm::vec2(noise_radius * cos(deg * DEG_TO_RAD) + ofGetWidth() * 0.5, noise_radius * sin(deg * DEG_TO_RAD) + ofGetHeight() * 0.5));

}

ofFill();

ofBeginShape();

ofVertices(vertices);

ofEndShape(true);

this->fbo.end();

this->fbo.readToPixels(this->pixels);

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;

int x = feature.x;

int y = feature.y;

if (feature.z > -30 && feature.z < 30) {

if (this->pixels.getColor(x, y) != ofColor(0, 0)) {

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() > 50) {

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() > 50) {

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 == 49) {

this->frame_list[i].addIndex(48);

this->frame_list[i].addIndex(49);

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateX(180);

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

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/Insta20200904

2020年9月3日2020年9月3日

Characters by a swarm. Draw by openFrameworks

[ Video ]

[ About ]
群れによる文字。

Characters by a swarm.

[ 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;

	ofFbo fbo;
	ofPixels pixels;
};

#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;

ofFbo fbo;

ofPixels pixels;

};

#include "ofApp.h"

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

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

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

	this->fbo.allocate(ofGetWidth(), ofGetHeight());
	this->fbo.begin();
	ofClear(0);

	ofTrueTypeFont font;
	font.loadFont("fonts/Kazesawa-bold.ttf", 320, true, true, true);
	string word = "LO";
	font.drawString(word, ofGetWidth() * 0.5 - font.stringWidth(word) * 0.5, ofGetHeight() * 0.5 - font.stringHeight(word) * 0.05);
	word = "VE";
	font.drawString(word, ofGetWidth() * 0.5 - font.stringWidth(word) * 0.5, ofGetHeight() * 0.5 + font.stringHeight(word) * 1.05);

	this->fbo.end();
	this->fbo.readToPixels(this->pixels);

	for (int i = 0; i < 600; i++) {

		ofMesh mesh, frame;
		frame.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);

		glm::vec3 base;
		while (true) {
		
			int x = ofRandom(ofGetWidth());
			int y = ofRandom(ofGetHeight());
			if (this->pixels.getColor(x, y) != ofColor(0, 0)) {

				base = glm::vec3(x, y, ofRandom(-30, 30));
				break;
			}
		}
		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) * 3;
		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;
			int x = feature.x;
			int y = feature.y;
			if (feature.z > -30 && feature.z < 30) {
			
				if (this->pixels.getColor(x, y) != ofColor(0, 0)) {

					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() > 50) {

			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() > 50) {

			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 == 49) {

				this->frame_list[i].addIndex(48);
				this->frame_list[i].addIndex(49);
			}
		}
	}
}

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

	this->cam.begin();
	ofRotateX(180);
	ofRotateY(50 * cos(ofGetFrameNum() * 0.015));

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

	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();

this->fbo.allocate(ofGetWidth(), ofGetHeight());

this->fbo.begin();

ofClear(0);

ofTrueTypeFont font;

font.loadFont("fonts/Kazesawa-bold.ttf", 320, true, true, true);

string word = "LO";

font.drawString(word, ofGetWidth() * 0.5 - font.stringWidth(word) * 0.5, ofGetHeight() * 0.5 - font.stringHeight(word) * 0.05);

word = "VE";

font.drawString(word, ofGetWidth() * 0.5 - font.stringWidth(word) * 0.5, ofGetHeight() * 0.5 + font.stringHeight(word) * 1.05);

this->fbo.end();

this->fbo.readToPixels(this->pixels);

for (int i = 0; i < 600; i++) {

ofMesh mesh, frame;

frame.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);

glm::vec3 base;

while (true) {

int x = ofRandom(ofGetWidth());

int y = ofRandom(ofGetHeight());

if (this->pixels.getColor(x, y) != ofColor(0, 0)) {

base = glm::vec3(x, y, ofRandom(-30, 30));

break;

}

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) * 3;