openFrameworks – ページ 372 – プログラミング de 落描き

2022年2月6日

Gradation cards. Draw by openFrameworks

[ Video ]

[ About ]
トーラスの座標4か所で結んで四角を描く。

Draw a square by connecting it with the four coordinates of the torus.

[ 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_point(float R, float r, float u, float v);

	ofEasyCam cam;
	ofMesh face, line;
};

#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_point(float R, float r, float u, float v);

ofEasyCam cam;

ofMesh face, line;

};

#include "ofApp.h"

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

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

	ofBackground(255);
	ofSetLineWidth(3);
	ofEnableDepthTest();

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

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

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

	float R = 250;
	float r = R * 0.25;
	float v_step = 5;

	for (float v = 0; v < 360; v += v_step) {

		float u_start = ofMap(ofNoise(glm::vec3(cos(v * DEG_TO_RAD) * 0.85, sin(v * DEG_TO_RAD) * 0.85, ofGetFrameNum() * 0.01)), 0, 1, -360,360);
		ofColor face_color;
		float hue = ofMap(v, 0, 360, 0, 255);
		face_color.setHsb(hue, 130, 255);

		vector<glm::vec3> vertices;
		for (float u = u_start; u < u_start + 360; u += 90) {

			vertices.push_back(glm::vec3(this->make_point(R, r, u, v)));
		}

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

		this->face.addIndex(this->face.getNumVertices() - 1); this->face.addIndex(this->face.getNumVertices() - 2); this->face.addIndex(this->face.getNumVertices() - 3);
		this->face.addIndex(this->face.getNumVertices() - 1); this->face.addIndex(this->face.getNumVertices() - 3); this->face.addIndex(this->face.getNumVertices() - 4);

		this->line.addIndex(this->line.getNumVertices() - 1); this->line.addIndex(this->line.getNumVertices() - 2);
		this->line.addIndex(this->line.getNumVertices() - 2); this->line.addIndex(this->line.getNumVertices() - 3);
		this->line.addIndex(this->line.getNumVertices() - 3); this->line.addIndex(this->line.getNumVertices() - 4);
		this->line.addIndex(this->line.getNumVertices() - 1); this->line.addIndex(this->line.getNumVertices() - 4);

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

			this->face.addColor(face_color);
			this->line.addColor(ofColor(255));
		}
	}
}

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

	this->cam.begin();

	ofRotateY(ofGetFrameNum() * 1.333333333333333333);

	this->line.drawWireframe();
	this->face.draw();

	this->cam.end();
}

//--------------------------------------------------------------
glm::vec3 ofApp::make_point(float R, float r, float u, float v) {

	// 数学デッサン教室 描いて楽しむ数学たち　P.31

	u *= DEG_TO_RAD;
	v *= DEG_TO_RAD;

	auto x = (R + r * cos(u)) * cos(v);
	auto y = (R + r * cos(u)) * sin(v);
	auto z = r * sin(u);

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


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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(30);

ofSetWindowTitle("openFrameworks");

ofBackground(255);

ofSetLineWidth(3);

ofEnableDepthTest();

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

}

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

void ofApp::update() {

this->face.clear();

this->line.clear();

float R = 250;

float r = R * 0.25;

float v_step = 5;

for (float v = 0; v < 360; v += v_step) {

float u_start = ofMap(ofNoise(glm::vec3(cos(v * DEG_TO_RAD) * 0.85, sin(v * DEG_TO_RAD) * 0.85, ofGetFrameNum() * 0.01)), 0, 1, -360,360);

ofColor face_color;

float hue = ofMap(v, 0, 360, 0, 255);

face_color.setHsb(hue, 130, 255);

vector<glm::vec3> vertices;

for (float u = u_start; u < u_start + 360; u += 90) {

vertices.push_back(glm::vec3(this->make_point(R, r, u, v)));

}

this->face.addVertices(vertices);

this->line.addVertices(vertices);

this->face.addIndex(this->face.getNumVertices() - 1); this->face.addIndex(this->face.getNumVertices() - 2); this->face.addIndex(this->face.getNumVertices() - 3);

this->face.addIndex(this->face.getNumVertices() - 1); this->face.addIndex(this->face.getNumVertices() - 3); this->face.addIndex(this->face.getNumVertices() - 4);

this->line.addIndex(this->line.getNumVertices() - 1); this->line.addIndex(this->line.getNumVertices() - 2);

this->line.addIndex(this->line.getNumVertices() - 2); this->line.addIndex(this->line.getNumVertices() - 3);

this->line.addIndex(this->line.getNumVertices() - 3); this->line.addIndex(this->line.getNumVertices() - 4);

this->line.addIndex(this->line.getNumVertices() - 1); this->line.addIndex(this->line.getNumVertices() - 4);

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

this->face.addColor(face_color);

this->line.addColor(ofColor(255));

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateY(ofGetFrameNum() * 1.333333333333333333);

this->line.drawWireframe();

this->face.draw();

this->cam.end();

}

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

glm::vec3 ofApp::make_point(float R, float r, float u, float v) {

// 数学デッサン教室描いて楽しむ数学たち　P.31

u *= DEG_TO_RAD;

v *= DEG_TO_RAD;

auto x = (R + r * cos(u)) * cos(v);

auto y = (R + r * cos(u)) * sin(v);

auto z = r * sin(u);

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

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20220206

2022年2月5日

Gradation sun. Draw by openFrameworks

[ Video ]

[ About ]
伝達するグラデーション。

Communicating Gradients.

[ 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) {};

	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 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) {};

ofMesh mesh;

};

#include "ofApp.h"

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

	ofSetFrameRate(30);
	ofSetWindowTitle("openframeworks");

	ofBackground(255);
}

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

	this->mesh.clear();

	int hue = 0;
	int deg_span = 6;
	ofColor color;
	for (int deg = 0; deg < 360; deg += deg_span * 2) {

		for (int radius = 50; radius < 720; radius += 15) {

			hue = (radius / 2 - ofGetFrameNum() * 2) % 255;
			color.setHsb(hue, 180, 255);

			this->mesh.addVertex(glm::vec3(radius * cos((deg + deg_span * 0.5) * DEG_TO_RAD), radius * sin((deg + deg_span * 0.5) * DEG_TO_RAD), 0));
			this->mesh.addVertex(glm::vec3(radius * cos((deg - deg_span * 0.5) * DEG_TO_RAD), radius * sin((deg - deg_span * 0.5) * DEG_TO_RAD), 0));
			this->mesh.addColor(color);
			this->mesh.addColor(color);

			if (radius > 50) {

				this->mesh.addIndex(this->mesh.getNumVertices() - 1); this->mesh.addIndex(this->mesh.getNumVertices() - 3); this->mesh.addIndex(this->mesh.getNumVertices() - 4);
				this->mesh.addIndex(this->mesh.getNumVertices() - 1); this->mesh.addIndex(this->mesh.getNumVertices() - 2); this->mesh.addIndex(this->mesh.getNumVertices() - 4);
			}

		}
	}

	hue = (ofGetFrameNum() * 2) % 255;
	color.setHsb(hue, 255, 255);

	this->mesh.addVertex(glm::vec3());
	this->mesh.addColor(color);
	int center_index = this->mesh.getNumVertices() - 1;
	for (int deg = 0; deg < 360; deg += deg_span) {

		hue = (25 + ofGetFrameNum() * 2) % 255;
		color.setHsb(hue, 180, 255);

		this->mesh.addVertex(glm::vec3(35 * cos((deg + deg_span) * DEG_TO_RAD), 35 * sin((deg + deg_span) * DEG_TO_RAD), 0));
		this->mesh.addVertex(glm::vec3(35 * cos((deg - deg_span) * DEG_TO_RAD), 35 * sin((deg - deg_span) * DEG_TO_RAD), 0));

		this->mesh.addColor(color);
		this->mesh.addColor(color);

		this->mesh.addIndex(center_index);
		this->mesh.addIndex(this->mesh.getNumVertices() - 2);
		this->mesh.addIndex(this->mesh.getNumVertices() - 1);


	}
}

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

	ofTranslate(ofGetWindowSize() * 0.5);

	this->mesh.draw();
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(30);

ofSetWindowTitle("openframeworks");

ofBackground(255);

}

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

void ofApp::update() {

this->mesh.clear();

int hue = 0;

int deg_span = 6;

ofColor color;

for (int deg = 0; deg < 360; deg += deg_span * 2) {

for (int radius = 50; radius < 720; radius += 15) {

hue = (radius / 2 - ofGetFrameNum() * 2) % 255;

color.setHsb(hue, 180, 255);

this->mesh.addVertex(glm::vec3(radius * cos((deg + deg_span * 0.5) * DEG_TO_RAD), radius * sin((deg + deg_span * 0.5) * DEG_TO_RAD), 0));

this->mesh.addVertex(glm::vec3(radius * cos((deg - deg_span * 0.5) * DEG_TO_RAD), radius * sin((deg - deg_span * 0.5) * DEG_TO_RAD), 0));

this->mesh.addColor(color);

if (radius > 50) {

this->mesh.addIndex(this->mesh.getNumVertices() - 1); this->mesh.addIndex(this->mesh.getNumVertices() - 3); this->mesh.addIndex(this->mesh.getNumVertices() - 4);

this->mesh.addIndex(this->mesh.getNumVertices() - 1); this->mesh.addIndex(this->mesh.getNumVertices() - 2); this->mesh.addIndex(this->mesh.getNumVertices() - 4);

}

hue = (ofGetFrameNum() * 2) % 255;

color.setHsb(hue, 255, 255);

this->mesh.addVertex(glm::vec3());

this->mesh.addColor(color);

int center_index = this->mesh.getNumVertices() - 1;

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

hue = (25 + ofGetFrameNum() * 2) % 255;

color.setHsb(hue, 180, 255);

this->mesh.addVertex(glm::vec3(35 * cos((deg + deg_span) * DEG_TO_RAD), 35 * sin((deg + deg_span) * DEG_TO_RAD), 0));

this->mesh.addVertex(glm::vec3(35 * cos((deg - deg_span) * DEG_TO_RAD), 35 * sin((deg - deg_span) * DEG_TO_RAD), 0));

this->mesh.addColor(color);

this->mesh.addIndex(center_index);

this->mesh.addIndex(this->mesh.getNumVertices() - 2);

this->mesh.addIndex(this->mesh.getNumVertices() - 1);

}

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

void ofApp::draw() {

ofTranslate(ofGetWindowSize() * 0.5);

this->mesh.draw();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20220205

2022年2月4日2022年2月4日

Random walk with a child. Draw by openFrameworks

[ Video ]

[ About ]
基礎となる位置とパラメータで分散する位置。

Position to be distributed by underlying and parameters.

[ 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) {};

	ofMesh mesh;
	vector<glm::vec3> circle_list;

	int number_of_base;
	int number_of_child;
};

#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) {};

ofMesh mesh;

vector<glm::vec3> circle_list;

int number_of_base;

int number_of_child;

};

#include "ofApp.h"	

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

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

	ofBackground(255);

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

	this->number_of_base = 150;
	this->number_of_child = 5;
}

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

	ofSeedRandom(39);

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

	vector<glm::vec3> location_list;
	for (int i = 0; i < this->number_of_base; i++) {

		auto base_location = glm::vec2(ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.00035), 0, 1, -350, 350), ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.00035), 0, 1, -350, 350));

		for (int k = 0; k < this->number_of_child; k++) {
		
			location_list.push_back(glm::vec3(base_location, k == 0 ? 5 : 3));
		}
	}

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

		for (int k = 1; k < this->number_of_child; k++) {

			auto gap = glm::vec2(ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.005), 0, 1, -50, 50), ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.005), 0, 1, -50, 50));
			auto noise_value = ofNoise(glm::vec4(location_list[i + k] * 0.005, ofGetFrameNum() * 0.015));
			auto param = 0.f;
			if (noise_value > 0.65) {

				param = ofMap(noise_value, 0.65, 1, 0, 3);
			}
			
			location_list[i + k] = location_list[i + k] + gap * param;
		}
	}

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

		this->circle_list.push_back(location_list[i]);
		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 < 50) {

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

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

	}
}

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

	ofTranslate(ofGetWindowSize() * 0.5);

	ofSetLineWidth(1);
	this->mesh.drawWireframe();

	ofSetLineWidth(1.5);
	for (auto& circle : this->circle_list) {

		if (circle.z == 3) {

			ofFill();
			ofSetColor(255);
			ofDrawCircle(glm::vec2(circle.x, circle.y), circle.z);

			ofNoFill();
			ofSetColor(0);
			ofDrawCircle(glm::vec2(circle.x, circle.y), circle.z);
		}
	}

	for (auto& circle : this->circle_list) {

		if (circle.z == 5) {

			ofFill();
			ofSetColor(255);
			ofDrawCircle(glm::vec2(circle.x, circle.y), circle.z);

			ofNoFill();
			ofSetColor(0);
			ofDrawCircle(glm::vec2(circle.x, circle.y), circle.z);
		}
	}
}

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

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

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#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(30);

ofSetWindowTitle("openFrameworks");

ofBackground(255);

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

this->number_of_base = 150;

this->number_of_child = 5;

}

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

void ofApp::update() {

ofSeedRandom(39);

this->mesh.clear();

this->circle_list.clear();

vector<glm::vec3> location_list;

for (int i = 0; i < this->number_of_base; i++) {

auto base_location = glm::vec2(ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.00035), 0, 1, -350, 350), ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.00035), 0, 1, -350, 350));

for (int k = 0; k < this->number_of_child; k++) {

location_list.push_back(glm::vec3(base_location, k == 0 ? 5 : 3));

}

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

for (int k = 1; k < this->number_of_child; k++) {

auto gap = glm::vec2(ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.005), 0, 1, -50, 50), ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.005), 0, 1, -50, 50));

auto noise_value = ofNoise(glm::vec4(location_list[i + k] * 0.005, ofGetFrameNum() * 0.015));

auto param = 0.f;

if (noise_value > 0.65) {

param = ofMap(noise_value, 0.65, 1, 0, 3);

}

location_list[i + k] = location_list[i + k] + gap * param;

}

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

this->circle_list.push_back(location_list[i]);

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 < 50) {

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

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

this->mesh.addIndex(this->mesh.getNumVertices() - 1);

this->mesh.addIndex(this->mesh.getNumVertices() - 2);

}

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

void ofApp::draw() {

ofTranslate(ofGetWindowSize() * 0.5);

ofSetLineWidth(1);

this->mesh.drawWireframe();

ofSetLineWidth(1.5);

for (auto& circle : this->circle_list) {

if (circle.z == 3) {

ofFill();

ofSetColor(255);

ofDrawCircle(glm::vec2(circle.x, circle.y), circle.z);

ofNoFill();

ofSetColor(0);

ofDrawCircle(glm::vec2(circle.x, circle.y), circle.z);

}

for (auto& circle : this->circle_list) {

if (circle.z == 5) {

ofFill();

ofSetColor(255);

ofDrawCircle(glm::vec2(circle.x, circle.y), circle.z);

ofNoFill();

ofSetColor(0);

ofDrawCircle(glm::vec2(circle.x, circle.y), circle.z);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20220204

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