ofMesh – ページ 206 – プログラミング de 落描き

2020年1月17日

Piece of square. openFrameworks

[ Video ]

[ About ]
正方形の破片。

Piece of square.

[ 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) {};

	glm::vec2 make_point(int len, int param);

	ofMesh mesh;
	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) {};

glm::vec2 make_point(int len, int param);

ofMesh mesh;

vector<ofColor> color_list;

};

#include "ofApp.h"

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

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

	ofBackground(239);

	ofColor color;
	vector<int> hex_list = { 0x247BA0, 0x70C1B3, 0xB2DBBF, 0xF3FFBD, 0xFF1654 };
	for (auto hex : hex_list) {

		color.setHex(hex);
		this->color_list.push_back(color);
	}
}

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

	ofSeedRandom(39);

	this->mesh.clear();

	int x_span = 256;
	int y_span = 240;

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

		for (int y = y_span * 0.5; y <= ofGetWidth(); y += y_span) {

			for (int in = 10; in < 220; in += 30) {

				int color_index = ofRandom(this->color_list.size());
				ofColor color = this->color_list[color_index];

				int out = in + 15;
				int start_param = ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.005), 0, 1, 0, 100);
				int noise_value = ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.005), 0, 1, 1, 150);
				int end_param = start_param + noise_value;

				for (int param = start_param; param <= end_param; param++) {

					int index = this->mesh.getNumVertices();

					vector<glm::vec3> vertices;
					vertices.push_back(glm::vec3(x, y, 0) + glm::vec3(this->make_point(in, param), 0));
					vertices.push_back(glm::vec3(x, y, 0) + glm::vec3(this->make_point(out, param), 0));
					vertices.push_back(glm::vec3(x, y, 0) + glm::vec3(this->make_point(out, param + 1), 0));
					vertices.push_back(glm::vec3(x, y, 0) + glm::vec3(this->make_point(in, param + 1), 0));

					this->mesh.addVertices(vertices);

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

						this->mesh.addColor(color);
					}

					this->mesh.addIndex(index + 0); this->mesh.addIndex(index + 1); this->mesh.addIndex(index + 2);
					this->mesh.addIndex(index + 0); this->mesh.addIndex(index + 2); this->mesh.addIndex(index + 3);
				}
			}
		}
	}
}

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

	this->mesh.drawFaces();
}

//--------------------------------------------------------------
glm::vec2 ofApp::make_point(int len, int param) {

	param = param % 100;
	if (param < 25) {

		return glm::vec2(ofMap(param, 0, 25, -len * 0.5, len * 0.5), -len * 0.5);
	}
	else if (param < 50) {

		return glm::vec2(len * 0.5, ofMap(param, 25, 50, -len * 0.5, len * 0.5));
	}
	else if (param < 75) {

		return glm::vec2(ofMap(param, 50, 75, len * 0.5, -len * 0.5), len * 0.5);
	}
	else {

		return glm::vec2(-len * 0.5, ofMap(param, 75, 100, len * 0.5, -len * 0.5));
	}
}

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

	ofSetupOpenGL(1280, 720, OF_WINDOW);
	ofRunApp(new ofApp());
}

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#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openframeworks");

ofBackground(239);

ofColor color;

vector<int> hex_list = { 0x247BA0, 0x70C1B3, 0xB2DBBF, 0xF3FFBD, 0xFF1654 };

for (auto hex : hex_list) {

color.setHex(hex);

this->color_list.push_back(color);

}

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

void ofApp::update() {

ofSeedRandom(39);

this->mesh.clear();

int x_span = 256;

int y_span = 240;

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

for (int y = y_span * 0.5; y <= ofGetWidth(); y += y_span) {

for (int in = 10; in < 220; in += 30) {

int color_index = ofRandom(this->color_list.size());

ofColor color = this->color_list[color_index];

int out = in + 15;

int start_param = ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.005), 0, 1, 0, 100);

int noise_value = ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.005), 0, 1, 1, 150);

int end_param = start_param + noise_value;

for (int param = start_param; param <= end_param; param++) {

int index = this->mesh.getNumVertices();

vector<glm::vec3> vertices;

vertices.push_back(glm::vec3(x, y, 0) + glm::vec3(this->make_point(in, param), 0));

vertices.push_back(glm::vec3(x, y, 0) + glm::vec3(this->make_point(out, param), 0));

vertices.push_back(glm::vec3(x, y, 0) + glm::vec3(this->make_point(out, param + 1), 0));

vertices.push_back(glm::vec3(x, y, 0) + glm::vec3(this->make_point(in, param + 1), 0));

this->mesh.addVertices(vertices);

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

this->mesh.addColor(color);

}

this->mesh.addIndex(index + 0); this->mesh.addIndex(index + 1); this->mesh.addIndex(index + 2);

this->mesh.addIndex(index + 0); this->mesh.addIndex(index + 2); this->mesh.addIndex(index + 3);

}

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

void ofApp::draw() {

this->mesh.drawFaces();

}

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

glm::vec2 ofApp::make_point(int len, int param) {

param = param % 100;

if (param < 25) {

return glm::vec2(ofMap(param, 0, 25, -len * 0.5, len * 0.5), -len * 0.5);

}

else if (param < 50) {

return glm::vec2(len * 0.5, ofMap(param, 25, 50, -len * 0.5, len * 0.5));

}

else if (param < 75) {

return glm::vec2(ofMap(param, 50, 75, len * 0.5, -len * 0.5), len * 0.5);

}

else {

return glm::vec2(-len * 0.5, ofMap(param, 75, 100, len * 0.5, -len * 0.5));

}

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

int main() {

ofSetupOpenGL(1280, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20200117

2020年1月16日

Bend the circle. openFrameworks

[ Video ]

[ About ]
円を曲げる。

Bend 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) {};

	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 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) {};

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();

	auto len = 10;
	for (int radius = 0; radius < 100; radius += len) {

		auto noise_location = glm::vec3(ofRandom(1000), ofRandom(1000), ofRandom(1000));
		for (int deg = 0; deg < 360; deg += 1) {

			int index = this->face.getNumVertices();

			vector<glm::vec3> vertices;
			vertices.push_back(glm::vec3(glm::vec3(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD), 0)));
			vertices.push_back(glm::vec3(glm::vec3((radius + len) * cos(deg * DEG_TO_RAD), (radius + len) * sin(deg * DEG_TO_RAD), 0)));
			vertices.push_back(glm::vec3(glm::vec3((radius + len) * cos((deg + 1) * DEG_TO_RAD), (radius + len) * sin((deg + 1) * DEG_TO_RAD), 0)));
			vertices.push_back(glm::vec3(glm::vec3(radius * cos((deg + 1) * DEG_TO_RAD), radius * sin((deg + 1) * DEG_TO_RAD), 0)));

			auto angle_x = ofMap(ofNoise(noise_location.x, cos(deg * DEG_TO_RAD) * 0.3, ofGetFrameNum() * 0.001), 0, 1, 0, PI * 2);
			auto angle_y = ofMap(ofNoise(noise_location.y, sin(deg * DEG_TO_RAD) * 0.3, ofGetFrameNum() * 0.001), 0, 1, 0, PI * 2);
			auto angle_z = ofMap(ofNoise(noise_location.z, ofGetFrameNum() * 0.0035), 0, 1, 0, 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));

			vertices[0] = glm::vec4(vertices[0], 0) * rotation_z * rotation_y * rotation_x;
			vertices[1] = glm::vec4(vertices[1], 0) * rotation_z * rotation_y * rotation_x;

			angle_x = ofMap(ofNoise(noise_location.x, cos((deg + 1) * DEG_TO_RAD) * 0.3, ofGetFrameNum() * 0.001), 0, 1, 0, PI * 2);
			angle_y = ofMap(ofNoise(noise_location.y, sin((deg + 1) * DEG_TO_RAD) * 0.3, ofGetFrameNum() * 0.001), 0, 1, 0, PI * 2);

			rotation_x = glm::rotate(glm::mat4(), angle_x, glm::vec3(1, 0, 0));
			rotation_y = glm::rotate(glm::mat4(), angle_y, glm::vec3(0, 1, 0));
			
			vertices[2] = glm::vec4(vertices[2], 0) * rotation_z * rotation_y * rotation_x;
			vertices[3] = glm::vec4(vertices[3], 0) * rotation_z * rotation_y * rotation_x;

			this->face.addVertices(vertices);
			this->frame.addVertices(vertices);

			this->face.addIndex(index + 0); this->face.addIndex(index + 1); this->face.addIndex(index + 2);
			this->face.addIndex(index + 0); this->face.addIndex(index + 2); this->face.addIndex(index + 3);

			this->frame.addIndex(index + 0); this->frame.addIndex(index + 3);
			this->frame.addIndex(index + 1); this->frame.addIndex(index + 2);
		}
	}
}

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

	this->cam.begin();
	ofRotateY(ofGetFrameNum() * 0.5);
	ofRotateX(ofGetFrameNum() * 0.25);

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

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

	this->cam.end();
}

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

	ofSetupOpenGL(1280, 720, OF_WINDOW);
	ofRunApp(new ofApp());
}

#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();

auto len = 10;

for (int radius = 0; radius < 100; radius += len) {

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

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

int index = this->face.getNumVertices();

vector<glm::vec3> vertices;

vertices.push_back(glm::vec3(glm::vec3(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD), 0)));

vertices.push_back(glm::vec3(glm::vec3((radius + len) * cos(deg * DEG_TO_RAD), (radius + len) * sin(deg * DEG_TO_RAD), 0)));

vertices.push_back(glm::vec3(glm::vec3((radius + len) * cos((deg + 1) * DEG_TO_RAD), (radius + len) * sin((deg + 1) * DEG_TO_RAD), 0)));

vertices.push_back(glm::vec3(glm::vec3(radius * cos((deg + 1) * DEG_TO_RAD), radius * sin((deg + 1) * DEG_TO_RAD), 0)));

auto angle_x = ofMap(ofNoise(noise_location.x, cos(deg * DEG_TO_RAD) * 0.3, ofGetFrameNum() * 0.001), 0, 1, 0, PI * 2);

auto angle_y = ofMap(ofNoise(noise_location.y, sin(deg * DEG_TO_RAD) * 0.3, ofGetFrameNum() * 0.001), 0, 1, 0, PI * 2);

auto angle_z = ofMap(ofNoise(noise_location.z, ofGetFrameNum() * 0.0035), 0, 1, 0, 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));

vertices[0] = glm::vec4(vertices[0], 0) * rotation_z * rotation_y * rotation_x;

vertices[1] = glm::vec4(vertices[1], 0) * rotation_z * rotation_y * rotation_x;

angle_x = ofMap(ofNoise(noise_location.x, cos((deg + 1) * DEG_TO_RAD) * 0.3, ofGetFrameNum() * 0.001), 0, 1, 0, PI * 2);

angle_y = ofMap(ofNoise(noise_location.y, sin((deg + 1) * DEG_TO_RAD) * 0.3, ofGetFrameNum() * 0.001), 0, 1, 0, PI * 2);

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

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

vertices[2] = glm::vec4(vertices[2], 0) * rotation_z * rotation_y * rotation_x;

vertices[3] = glm::vec4(vertices[3], 0) * rotation_z * rotation_y * rotation_x;

this->face.addVertices(vertices);

this->frame.addVertices(vertices);

this->face.addIndex(index + 0); this->face.addIndex(index + 1); this->face.addIndex(index + 2);

this->face.addIndex(index + 0); this->face.addIndex(index + 2); this->face.addIndex(index + 3);

this->frame.addIndex(index + 0); this->frame.addIndex(index + 3);

this->frame.addIndex(index + 1); this->frame.addIndex(index + 2);

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateY(ofGetFrameNum() * 0.5);

ofRotateX(ofGetFrameNum() * 0.25);

ofSetColor(39);

this->face.draw();

ofSetColor(239);

this->frame.draw();

this->cam.end();

}

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

int main() {

ofSetupOpenGL(1280, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20200116

2020年1月15日2020年1月15日

Velocity visualization & Camera tracking. openFrameworks

[ Video ]

[ About ]
速度の可視化＆カメラ追従。

Velocity visualization & Camera tracking.

[ 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;
	glm::vec3 cam_position;

	ofMesh mesh;

	vector<glm::vec3> top_list;
	vector<glm::vec3> noise_seed_list;
	vector<glm::vec3> location_list;
	vector<ofColor> color_list;
	vector<glm::vec3> velocity_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;

glm::vec3 cam_position;

ofMesh mesh;

vector<glm::vec3> top_list;

vector<glm::vec3> noise_seed_list;

vector<glm::vec3> location_list;

vector<ofColor> color_list;

vector<glm::vec3> velocity_list;

};

#include "ofApp.h"

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

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

	ofBackground(239);
	ofSetColor(39);
	ofSetLineWidth(1.5);
	ofEnableDepthTest();

	for (int i = 0; i < 12; i++) {

		this->noise_seed_list.push_back(glm::vec3(ofRandom(1000), ofRandom(1000), ofRandom(1000)));
	}

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

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

	this->mesh.clear();
	this->top_list.clear();

	this->cam_position = glm::vec3(
		ofMap(ofNoise(this->noise_seed_list[0].x, (ofGetFrameNum() - 50) * 0.003), 0, 1, -300, 300),
		ofMap(ofNoise(this->noise_seed_list[0].y, (ofGetFrameNum() - 50) * 0.003), 0, 1, -300, 300),
		ofMap(ofNoise(this->noise_seed_list[0].z, (ofGetFrameNum() - 50) * 0.003), 0, 1, -300, 300)
	);

	auto first = true;
	for (auto& noise_seed : this->noise_seed_list) {

		auto location = glm::vec3(
			ofMap(ofNoise(noise_seed.x, ofGetFrameNum() * 0.003), 0, 1, -300, 300),
			ofMap(ofNoise(noise_seed.y, ofGetFrameNum() * 0.003), 0, 1, -300, 300),
			ofMap(ofNoise(noise_seed.z, ofGetFrameNum() * 0.003), 0, 1, -300, 300)
		);
		this->top_list.push_back(location);

		auto next = glm::vec3(
			ofMap(ofNoise(noise_seed.x, (ofGetFrameNum() + 1) * 0.003), 0, 1, -300, 300),
			ofMap(ofNoise(noise_seed.y, (ofGetFrameNum() + 1) * 0.003), 0, 1, -300, 300),
			ofMap(ofNoise(noise_seed.z, (ofGetFrameNum() + 1) * 0.003), 0, 1, -300, 300)
		);
		auto distance = location - next;
		distance *= 2;

		auto future = location + distance * 30;
		auto random_deg_1 = ofRandom(360);
		auto random_deg_2 = ofRandom(360);
		future += glm::vec3(
			30 * cos(random_deg_1 * DEG_TO_RAD) * sin(random_deg_2 * DEG_TO_RAD),
			30 * sin(random_deg_1 * DEG_TO_RAD) * sin(random_deg_2 * DEG_TO_RAD),
			30 * cos(random_deg_2 * 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));
		first ? this->color_list.push_back(ofColor(239, 39, 39)) : this->color_list.push_back(ofColor(39));
		first = false;
	}

	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::length(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);
		}
	}

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

		this->mesh.addVertex(this->location_list[i]);
		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++) {

			if (glm::distance(this->mesh.getVertex(i), this->mesh.getVertex(k)) < 50) {

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

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

	this->cam.setPosition(this->cam_position + glm::vec3(0, 0, 250));
	this->cam.lookAt(this->top_list[0]);
	this->cam.begin();

	this->mesh.drawWireframe();

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

		ofSetColor(this->color_list[i]);
		ofDrawSphere(this->location_list[i], 1.5);
	}

	this->cam.end();
}

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

	ofSetupOpenGL(1280, 720, OF_WINDOW);
	ofRunApp(new ofApp());
}

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#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openframeworks");

ofBackground(239);

ofSetColor(39);

ofSetLineWidth(1.5);

ofEnableDepthTest();

for (int i = 0; i < 12; i++) {

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

}

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

}

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

void ofApp::update() {

this->mesh.clear();

this->top_list.clear();

this->cam_position = glm::vec3(

ofMap(ofNoise(this->noise_seed_list[0].x, (ofGetFrameNum() - 50) * 0.003), 0, 1, -300, 300),

ofMap(ofNoise(this->noise_seed_list[0].y, (ofGetFrameNum() - 50) * 0.003), 0, 1, -300, 300),

ofMap(ofNoise(this->noise_seed_list[0].z, (ofGetFrameNum() - 50) * 0.003), 0, 1, -300, 300)

);

auto first = true;

for (auto& noise_seed : this->noise_seed_list) {

auto location = glm::vec3(

ofMap(ofNoise(noise_seed.x, ofGetFrameNum() * 0.003), 0, 1, -300, 300),

ofMap(ofNoise(noise_seed.y, ofGetFrameNum() * 0.003), 0, 1, -300, 300),

ofMap(ofNoise(noise_seed.z, ofGetFrameNum() * 0.003), 0, 1, -300, 300)

);

this->top_list.push_back(location);

auto next = glm::vec3(

ofMap(ofNoise(noise_seed.x, (ofGetFrameNum() + 1) * 0.003), 0, 1, -300, 300),

ofMap(ofNoise(noise_seed.y, (ofGetFrameNum() + 1) * 0.003), 0, 1, -300, 300),

ofMap(ofNoise(noise_seed.z, (ofGetFrameNum() + 1) * 0.003), 0, 1, -300, 300)

);

auto distance = location - next;

distance *= 2;

auto future = location + distance * 30;

auto random_deg_1 = ofRandom(360);

auto random_deg_2 = ofRandom(360);

future += glm::vec3(

30 * cos(random_deg_1 * DEG_TO_RAD) * sin(random_deg_2 * DEG_TO_RAD),

30 * sin(random_deg_1 * DEG_TO_RAD) * sin(random_deg_2 * DEG_TO_RAD),

30 * cos(random_deg_2 * 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));

first ? this->color_list.push_back(ofColor(239, 39, 39)) : this->color_list.push_back(ofColor(39));

first = false;

}

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::length(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);

}

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

this->mesh.addVertex(this->location_list[i]);

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++) {

if (glm::distance(this->mesh.getVertex(i), this->mesh.getVertex(k)) < 50) {

this->mesh.addIndex(i);

this->mesh.addIndex(k);

}

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

void ofApp::draw() {

this->cam.setPosition(this->cam_position + glm::vec3(0, 0, 250));

this->cam.lookAt(this->top_list[0]);

this->cam.begin();

this->mesh.drawWireframe();

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

ofSetColor(this->color_list[i]);

ofDrawSphere(this->location_list[i], 1.5);

}

this->cam.end();

}

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

int main() {

ofSetupOpenGL(1280, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20200115

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