openFrameworks – ページ 678 – プログラミング de 落描き

2019年12月12日2019年12月12日

Create particle from velocity. openFrameworks

[ Video ]

[ About ]
速度からパーティクルを生成。お互いに近いパーティクル同士で線を引く。

Create particle from velocity. And, connecting near 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 windowResized(int w, int h) {};
	void dragEvent(ofDragInfo dragInfo) {};
	void gotMessage(ofMessage msg) {};

	vector<glm::vec2> noise_seed_list;
	vector<glm::vec2> location_list;
	vector<glm::vec2> 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) {};

vector<glm::vec2> noise_seed_list;

vector<glm::vec2> location_list;

vector<glm::vec2> velocity_list;

};

#include "ofApp.h"

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

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

	ofBackground(239);
	ofSetColor(39);

	for (int i = 0; i < 2; i++) {

		this->noise_seed_list.push_back(glm::vec2(ofRandom(1000), ofRandom(1000)));
	}
}

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

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

		auto location = glm::vec2(ofMap(ofNoise(noise_seed.x, ofGetFrameNum() * 0.003), 0, 1, 100, ofGetWidth() - 100), ofMap(ofNoise(noise_seed.y, ofGetFrameNum() * 0.003), 0, 1, 100, ofGetHeight() - 100));
		auto next = glm::vec2(ofMap(ofNoise(noise_seed.x, (ofGetFrameNum() + 1) * 0.003), 0, 1, 100, ofGetWidth() - 100), ofMap(ofNoise(noise_seed.y, (ofGetFrameNum() + 1) * 0.003), 0, 1, 100, ofGetHeight() - 100));
		auto distance = location - next;
		distance *= 2;

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

		this->location_list.push_back(location);
		this->velocity_list.push_back(glm::normalize(future_distance) * glm::length(distance));
	}

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

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

		if (glm::distance(glm::vec2(ofGetWidth() * 0.5, ofGetHeight() * 0.5), this->location_list[i]) > 720) {

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

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

	for (auto& location : this->location_list) {

		ofDrawCircle(location, 5);
		for (auto& other : this->location_list) {

			if (location == other) continue;
			
			if (glm::distance(location, other) < 50) {

				ofDrawLine(location, other);
			}
		}
	}
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openframeworks");

ofBackground(239);

ofSetColor(39);

for (int i = 0; i < 2; i++) {

this->noise_seed_list.push_back(glm::vec2(ofRandom(1000), ofRandom(1000)));

}

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

void ofApp::update() {

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

auto location = glm::vec2(ofMap(ofNoise(noise_seed.x, ofGetFrameNum() * 0.003), 0, 1, 100, ofGetWidth() - 100), ofMap(ofNoise(noise_seed.y, ofGetFrameNum() * 0.003), 0, 1, 100, ofGetHeight() - 100));

auto next = glm::vec2(ofMap(ofNoise(noise_seed.x, (ofGetFrameNum() + 1) * 0.003), 0, 1, 100, ofGetWidth() - 100), ofMap(ofNoise(noise_seed.y, (ofGetFrameNum() + 1) * 0.003), 0, 1, 100, ofGetHeight() - 100));

auto distance = location - next;

distance *= 2;

auto future = location + distance * 30;

auto random_deg = ofRandom(360);

future += glm::vec2(30 * cos(random_deg * DEG_TO_RAD), 30 * sin(random_deg * DEG_TO_RAD));

auto future_distance = future - location;

this->location_list.push_back(location);

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

}

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

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

this->velocity_list[i] *= 1.01;

if (glm::distance(glm::vec2(ofGetWidth() * 0.5, ofGetHeight() * 0.5), this->location_list[i]) > 720) {

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

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

}

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

void ofApp::draw() {

for (auto& location : this->location_list) {

ofDrawCircle(location, 5);

for (auto& other : this->location_list) {

if (location == other) continue;

if (glm::distance(location, other) < 50) {

ofDrawLine(location, other);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20191212

2019年12月11日2019年12月11日

Circle are rotating. openFrameworks

[ Video ]

[ About ]
円をねじねじ。

Circle are rotationg.

[ 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> mesh_list, frame_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> mesh_list, frame_list;

};

#include "ofApp.h"

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

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

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

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

	this->mesh_list.clear();
	this->frame_list.clear();

	for (int x = 120; x < ofGetWidth(); x += 240) {

		for (int y = 120; y < ofGetHeight(); y += 240) {

			ofMesh mesh, frame;
			frame.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);
			for (int radius = 30; radius <= 100; radius += 10) {

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

					auto location = glm::vec3(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD), 0);
					auto param = int(ofGetFrameNum() + location.x + x + y) % 450;
					auto angle = 0.f;
					if (param > 225) {

						angle = ofMap(param, 225, 450, 0, PI * 6);
					}
					auto rotation = glm::rotate(glm::mat4(), angle, glm::vec3(1, 0, 0));
					location = glm::vec3(x, y, 0) + glm::vec4(location, 0) * rotation;

					if (radius == 30 || radius == 100) {

						frame.addVertex(location);
					}

					mesh.addVertex(location);
				}
			}

			for (int base = 0; base < mesh.getNumVertices() - 360; base += 360) {

				for (int i = base; i < base + 360; i += 1) {

					mesh.addIndex(i); mesh.addIndex(i + 360); mesh.addIndex((i + 1) % 360 + base + 360);
					mesh.addIndex(i); mesh.addIndex((i + 1) % 360 + base); mesh.addIndex((i + 1) % 360 + base + 360);
				}
			}

			for (int i = 0; i < 360; i++) {

				frame.addIndex(i); frame.addIndex((i + 1) % 360);
				frame.addIndex(i + 360); frame.addIndex((i + 1) % 360 + 360);
			}

			this->mesh_list.push_back(mesh);
			this->frame_list.push_back(frame);
		}
	}
}

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

	ofSetColor(39);
	for(auto& mesh : this->mesh_list){

		mesh.draw();
	}

	ofSetColor(239);
	for (auto& frame : this->frame_list) {

		frame.drawWireframe();
	}
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openframeworks");

ofBackground(239);

ofSetLineWidth(2);

ofEnableDepthTest();

}

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

void ofApp::update() {

this->mesh_list.clear();

this->frame_list.clear();

for (int x = 120; x < ofGetWidth(); x += 240) {

for (int y = 120; y < ofGetHeight(); y += 240) {

ofMesh mesh, frame;

frame.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);

for (int radius = 30; radius <= 100; radius += 10) {

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

auto location = glm::vec3(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD), 0);

auto param = int(ofGetFrameNum() + location.x + x + y) % 450;

auto angle = 0.f;

if (param > 225) {

angle = ofMap(param, 225, 450, 0, PI * 6);

}

auto rotation = glm::rotate(glm::mat4(), angle, glm::vec3(1, 0, 0));

location = glm::vec3(x, y, 0) + glm::vec4(location, 0) * rotation;

if (radius == 30 || radius == 100) {

frame.addVertex(location);

}

mesh.addVertex(location);

}

for (int base = 0; base < mesh.getNumVertices() - 360; base += 360) {

for (int i = base; i < base + 360; i += 1) {

mesh.addIndex(i); mesh.addIndex(i + 360); mesh.addIndex((i + 1) % 360 + base + 360);

mesh.addIndex(i); mesh.addIndex((i + 1) % 360 + base); mesh.addIndex((i + 1) % 360 + base + 360);

}

for (int i = 0; i < 360; i++) {

frame.addIndex(i); frame.addIndex((i + 1) % 360);

frame.addIndex(i + 360); frame.addIndex((i + 1) % 360 + 360);

}

this->mesh_list.push_back(mesh);

this->frame_list.push_back(frame);

}

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

void ofApp::draw() {

ofSetColor(39);

for(auto& mesh : this->mesh_list){

mesh.draw();

}

ofSetColor(239);

for (auto& frame : this->frame_list) {

frame.drawWireframe();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20191211

2019年12月10日2019年12月10日

Splitting apple. openFrameworks

[ Video ]

[ About ]
分割りんご。

Splitting apple.

[ 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) {};

	glm::vec3 make_apple_point(float u, float v);

	ofEasyCam cam;
	ofMesh mesh;
};

#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) {};

glm::vec3 make_apple_point(float u, float v);

ofEasyCam cam;

ofMesh mesh;

};

#include "ofApp.h"

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

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

	ofBackground(239);
	ofSetColor(39);
	ofEnableDepthTest();
}

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

	ofSeedRandom(39);
	this->mesh.clear();

	int span = 8;
	int scale, index;
	for (int v = 0; v < 360; v += span) {

		for (int u = -170; u < 250; u += span) {

			auto noise_seed = (this->make_apple_point(u - span * 0.5, v - span * 0.5) + this->make_apple_point(u - span * 0.5, v + span * 0.5) + this->make_apple_point(u + span * 0.5, v + span * 0.5)) / 3;
			auto noise_value = ofNoise(glm::vec4(noise_seed * 0.25, ofGetFrameNum() * 0.008));
			scale = 30;
			if (noise_value > 0.65) {
			
				scale = ofMap(noise_value, 0.65, 1, 30, 50);
			}
			index = this->mesh.getNumVertices();
			
			this->mesh.addVertex(this->make_apple_point(u - span * 0.5, v - span * 0.5) * scale);
			this->mesh.addVertex(this->make_apple_point(u - span * 0.5, v + span * 0.5) * scale);
			this->mesh.addVertex(this->make_apple_point(u + span * 0.5, v + span * 0.5) * scale);
						
			this->mesh.addIndex(index); this->mesh.addIndex(index + 1); this->mesh.addIndex(index + 2);

			noise_seed = (this->make_apple_point(u - span * 0.5, v - span * 0.5) + this->make_apple_point(u + span * 0.5, v - span * 0.5) + this->make_apple_point(u + span * 0.5, v + span * 0.5)) / 3;
			noise_value = ofNoise(glm::vec4(noise_seed * 0.25, ofGetFrameNum() * 0.008));
			scale = 30;
			if (noise_value > 0.65) {

				scale = ofMap(noise_value, 0.65, 1, 30, 50);
			}
			index = this->mesh.getNumVertices();

			this->mesh.addVertex(this->make_apple_point(u - span * 0.5, v - span * 0.5) * scale);
			this->mesh.addVertex(this->make_apple_point(u + span * 0.5, v - span * 0.5) * scale);
			this->mesh.addVertex(this->make_apple_point(u + span * 0.5, v + span * 0.5) * scale);

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

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

	this->cam.begin();
	ofRotateZ(ofGetFrameNum() * 0.5);

	ofSetColor(39);
	this->mesh.drawFaces();

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

	this->cam.end();
}

//--------------------------------------------------------------
glm::vec3 ofApp::make_apple_point(float u, float v) {

	// 数学デッサン教室 描いて楽しむ数学たち リンゴ局面 apple surface P.33 

	u *= DEG_TO_RAD;
	v *= DEG_TO_RAD;

	float x = (4 + 3.8 * cos(u)) * cos(v);
	float y = (4 + 3.8 * cos(u)) * sin(v);
	float z = -5 * log10(1 - 0.315 * u) + 5 * sin(u) + 2 * cos(u);

	return glm::vec3(x, y, z);
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openframeworks");

ofBackground(239);

ofSetColor(39);

ofEnableDepthTest();

}

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

void ofApp::update() {

ofSeedRandom(39);

this->mesh.clear();

int span = 8;

int scale, index;

for (int v = 0; v < 360; v += span) {

for (int u = -170; u < 250; u += span) {

auto noise_seed = (this->make_apple_point(u - span * 0.5, v - span * 0.5) + this->make_apple_point(u - span * 0.5, v + span * 0.5) + this->make_apple_point(u + span * 0.5, v + span * 0.5)) / 3;

auto noise_value = ofNoise(glm::vec4(noise_seed * 0.25, ofGetFrameNum() * 0.008));

scale = 30;

if (noise_value > 0.65) {

scale = ofMap(noise_value, 0.65, 1, 30, 50);

}

index = this->mesh.getNumVertices();

this->mesh.addVertex(this->make_apple_point(u - span * 0.5, v - span * 0.5) * scale);

this->mesh.addVertex(this->make_apple_point(u - span * 0.5, v + span * 0.5) * scale);

this->mesh.addVertex(this->make_apple_point(u + span * 0.5, v + span * 0.5) * scale);

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

noise_seed = (this->make_apple_point(u - span * 0.5, v - span * 0.5) + this->make_apple_point(u + span * 0.5, v - span * 0.5) + this->make_apple_point(u + span * 0.5, v + span * 0.5)) / 3;

noise_value = ofNoise(glm::vec4(noise_seed * 0.25, ofGetFrameNum() * 0.008));

scale = 30;

if (noise_value > 0.65) {

scale = ofMap(noise_value, 0.65, 1, 30, 50);

}

index = this->mesh.getNumVertices();

this->mesh.addVertex(this->make_apple_point(u - span * 0.5, v - span * 0.5) * scale);

this->mesh.addVertex(this->make_apple_point(u + span * 0.5, v - span * 0.5) * scale);

this->mesh.addVertex(this->make_apple_point(u + span * 0.5, v + span * 0.5) * scale);

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

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateZ(ofGetFrameNum() * 0.5);

ofSetColor(39);

this->mesh.drawFaces();

ofSetColor(239);

this->mesh.drawWireframe();

this->cam.end();

}

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

glm::vec3 ofApp::make_apple_point(float u, float v) {

// 数学デッサン教室描いて楽しむ数学たちリンゴ局面 apple surface P.33

u *= DEG_TO_RAD;

v *= DEG_TO_RAD;

float x = (4 + 3.8 * cos(u)) * cos(v);

float y = (4 + 3.8 * cos(u)) * sin(v);

float z = -5 * log10(1 - 0.315 * u) + 5 * sin(u) + 2 * cos(u);

return glm::vec3(x, y, z);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20191210

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