2022年6月 – ページ 5 – プログラミング de 落描き

2022年6月18日2022年6月16日

sphere splitting. Draw by openFrameworks

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[ About ]
輪切り球体。

sphere splitting.

[ 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;
	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) {};

ofEasyCam cam;

ofMesh face, frame;

};

#include "ofApp.h"

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

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

	ofBackground(255);
	ofEnableDepthTest();

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

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

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

	int radius = 100;
	int phi_deg_step = 5;

	for (int x = -400; x <= 400; x += 400) {

		for (int z = -400; z <= 400; z += 400) {

			for (float theta_deg = 1; theta_deg < 180; theta_deg += 10) {

				auto noise_z = radius * cos(theta_deg * DEG_TO_RAD);
				auto noise_value = ofNoise(x, z, noise_z * 0.05 + ofGetFrameNum() * 0.03);

				auto param_x = ofMap(noise_value, 0, 1, radius * -1, radius * 1);

				auto angle_x = ofMap(ofNoise(x, ofGetFrameNum() * 0.002), 0, 1, -PI * 2, PI * 2);
				auto rotation_x = glm::rotate(glm::mat4(), angle_x, glm::vec3(1, 0, 0));

				auto angle_y = ofMap(ofNoise(z, ofGetFrameNum() * 0.002), 0, 1, -PI * 2, PI * 2);
				auto rotation_y = glm::rotate(glm::mat4(), angle_y, glm::vec3(0, 1, 0));

				auto start_index = this->face.getNumVertices();
				for (int phi_deg = 0; phi_deg < 360; phi_deg += phi_deg_step) {

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

					vector<glm::vec3> vertices;

					vertices.push_back(glm::vec3(x, 0, z) + glm::vec4(param_x + radius * sin((theta_deg - 5) * DEG_TO_RAD) * cos(phi_deg * DEG_TO_RAD), radius * sin((theta_deg - 5) * DEG_TO_RAD) * sin(phi_deg * DEG_TO_RAD), radius * cos((theta_deg - 5) * DEG_TO_RAD), 0) * rotation_y * rotation_x);
					vertices.push_back(glm::vec3(x, 0, z) + glm::vec4(param_x + radius * sin((theta_deg + 5) * DEG_TO_RAD) * cos(phi_deg * DEG_TO_RAD), radius * sin((theta_deg + 5) * DEG_TO_RAD) * sin(phi_deg * DEG_TO_RAD), radius * cos((theta_deg + 5) * DEG_TO_RAD), 0) * rotation_y * rotation_x);

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

					if (phi_deg > 0) {

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

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

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

				auto index = this->face.getNumVertices() - 2;
				this->face.addIndex(start_index + 0); this->face.addIndex(index + 0); this->face.addIndex(index + 1);
				this->face.addIndex(start_index + 1); this->face.addIndex(index + 1); this->face.addIndex(start_index + 1);

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

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

	this->cam.begin();
	ofRotateX(270);

	ofSetColor(0);
	this->face.draw();

	ofSetColor(255);
	this->frame.drawWireframe();

	this->cam.end();
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openFrameworks");

ofBackground(255);

ofEnableDepthTest();

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

}

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

void ofApp::update() {

this->face.clear();

this->frame.clear();

int radius = 100;

int phi_deg_step = 5;

for (int x = -400; x <= 400; x += 400) {

for (int z = -400; z <= 400; z += 400) {

for (float theta_deg = 1; theta_deg < 180; theta_deg += 10) {

auto noise_z = radius * cos(theta_deg * DEG_TO_RAD);

auto noise_value = ofNoise(x, z, noise_z * 0.05 + ofGetFrameNum() * 0.03);

auto param_x = ofMap(noise_value, 0, 1, radius * -1, radius * 1);

auto angle_x = ofMap(ofNoise(x, ofGetFrameNum() * 0.002), 0, 1, -PI * 2, PI * 2);

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

auto angle_y = ofMap(ofNoise(z, ofGetFrameNum() * 0.002), 0, 1, -PI * 2, PI * 2);

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

auto start_index = this->face.getNumVertices();

for (int phi_deg = 0; phi_deg < 360; phi_deg += phi_deg_step) {

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

vector<glm::vec3> vertices;

vertices.push_back(glm::vec3(x, 0, z) + glm::vec4(param_x + radius * sin((theta_deg - 5) * DEG_TO_RAD) * cos(phi_deg * DEG_TO_RAD), radius * sin((theta_deg - 5) * DEG_TO_RAD) * sin(phi_deg * DEG_TO_RAD), radius * cos((theta_deg - 5) * DEG_TO_RAD), 0) * rotation_y * rotation_x);

vertices.push_back(glm::vec3(x, 0, z) + glm::vec4(param_x + radius * sin((theta_deg + 5) * DEG_TO_RAD) * cos(phi_deg * DEG_TO_RAD), radius * sin((theta_deg + 5) * DEG_TO_RAD) * sin(phi_deg * DEG_TO_RAD), radius * cos((theta_deg + 5) * DEG_TO_RAD), 0) * rotation_y * rotation_x);

this->face.addVertices(vertices);

this->frame.addVertices(vertices);

if (phi_deg > 0) {

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

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

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

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

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

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

}

auto index = this->face.getNumVertices() - 2;

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

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

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

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

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateX(270);

ofSetColor(0);

this->face.draw();

ofSetColor(255);

this->frame.drawWireframe();

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20220618

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2022年6月17日2022年6月16日

annual tree ring. Draw by openFrameworks

[ Video ]

[ About ]
ノイズ年輪。

Annual tree ring.

[ Source ]

#pragma once
#include "ofMain.h"

class ofApp : public ofBaseApp {

public:
	void setup();
	void update();
	void draw();

	void keyPressed(int key) {};
	void keyReleased(int key) {};
	void mouseMoved(int x, int y) {};
	void mouseDragged(int x, int y, int button) {};
	void mousePressed(int x, int y, int button) {};
	void mouseReleased(int x, int y, int button) {};
	void mouseEntered(int x, int y) {};
	void mouseExited(int x, int y) {};
	void windowResized(int w, int h) {};
	void dragEvent(ofDragInfo dragInfo) {};
	void gotMessage(ofMessage msg) {};
};

#pragma once

#include "ofMain.h"

class ofApp : public ofBaseApp {

public:

void setup();

void update();

void draw();

void keyPressed(int key) {};

void keyReleased(int key) {};

void mouseMoved(int x, int y) {};

void mouseDragged(int x, int y, int button) {};

void mousePressed(int x, int y, int button) {};

void mouseReleased(int x, int y, int button) {};

void mouseEntered(int x, int y) {};

void mouseExited(int x, int y) {};

void windowResized(int w, int h) {};

void dragEvent(ofDragInfo dragInfo) {};

void gotMessage(ofMessage msg) {};

};

#include "ofApp.h"

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

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

	ofBackground(0);
	ofNoFill();
}

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

	ofSeedRandom(39);
}

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

	ofTranslate(ofGetWindowSize() * 0.5);

	for (int radius = 300; radius > 0; radius -= 10) {

		ofSetColor(ofMap(radius, 0, 300, 0, 255));

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

			auto location = glm::vec2(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD));
			auto noise_param = ofMap(ofNoise(glm::vec3(location * 0.0085, ofGetFrameNum() * 0.02)), 0, 1, -30, 30);
			auto noise_radius = radius + noise_param * ofMap(radius, 0, 300, 1.5, 0);

			ofVertex(glm::vec2(noise_radius * cos(deg * DEG_TO_RAD), noise_radius * sin(deg * DEG_TO_RAD)));
		}
		ofEndShape(true);
	}
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(30);

ofSetWindowTitle("openFrameworks");

ofBackground(0);

ofNoFill();

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

ofTranslate(ofGetWindowSize() * 0.5);

for (int radius = 300; radius > 0; radius -= 10) {

ofSetColor(ofMap(radius, 0, 300, 0, 255));

ofBeginShape();

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

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

auto noise_param = ofMap(ofNoise(glm::vec3(location * 0.0085, ofGetFrameNum() * 0.02)), 0, 1, -30, 30);

auto noise_radius = radius + noise_param * ofMap(radius, 0, 300, 1.5, 0);

ofVertex(glm::vec2(noise_radius * cos(deg * DEG_TO_RAD), noise_radius * sin(deg * DEG_TO_RAD)));

}

ofEndShape(true);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20220617

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2022年6月16日

large and small. Draw by openFrameworks

[ Video ]

[ About ]
大きくなったり、小さくなったり。

large and small.

[ 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::vec3 make_point(float R, float r, float u, float v);

	ofEasyCam cam;

	vector<glm::vec3> base_location_list;

	vector<tuple<ofColor, glm::vec3, float>> sphere_list; // BodyColor, Location, size
	int number_of_sphere;
};

#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::vec3 make_point(float R, float r, float u, float v);

ofEasyCam cam;

vector<glm::vec3> base_location_list;

vector<tuple<ofColor, glm::vec3, float>> sphere_list; // BodyColor, Location, size

int number_of_sphere;

};

#include "ofApp.h"

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

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

	ofBackground(0);
	ofSetLineWidth(0.5);
	ofEnableDepthTest();

	auto ico_sphere = ofIcoSpherePrimitive(1, 5);

	this->number_of_sphere = 2500;
	while (this->sphere_list.size() < this->number_of_sphere) {

		auto tmp_location = this->make_point(300, ofRandom(0, 60), ofRandom(360), ofRandom(360));
		auto radius = this->sphere_list.size() < 110 ? ofRandom(10, 50) : ofRandom(2, 20);

		bool flag = true;
		for (int i = 0; i < this->sphere_list.size(); i++) {

			if (glm::distance(tmp_location, get<1>(this->sphere_list[i])) < get<2>(this->sphere_list[i]) + radius) {

				flag = false;
				break;
			}
		}

		if (flag) {

			ofColor color;
			color.setHsb(ofRandom(255), 200, 255);

			auto size = (radius * 2) / sqrt(3);

			this->sphere_list.push_back(make_tuple(color, tmp_location, size));
		}
	}
}

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

	ofSeedRandom(39);
}

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

	this->cam.begin();
	ofRotateZ(ofGetFrameNum() * 0.66666666666666666);

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

		auto location = get<1>(this->sphere_list[i]);
		auto size = get<2>(this->sphere_list[i]);

		ofPushMatrix();
		ofTranslate(location);

		ofRotateZ(ofRandom(360));
		ofRotateY(ofRandom(360));
		ofRotateX(ofRandom(360));

		ofColor color;
		color.setHsb(ofRandom(255), 200, 255);

		auto param = ofGetFrameNum() % 120;
		float scale = 1;
		if (param < 60) {
		
			scale = ofMap(param, 0, 60, 0, 1);
		}
		else {

			scale = ofMap(param, 60, 120, 1, 0);
		}

		ofFill();
		ofSetColor(color);
		ofDrawSphere(size * scale);

		ofPopMatrix();
	}

	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());
}

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#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(30);

ofSetWindowTitle("openFrameworks");

ofBackground(0);

ofSetLineWidth(0.5);

ofEnableDepthTest();

auto ico_sphere = ofIcoSpherePrimitive(1, 5);

this->number_of_sphere = 2500;

while (this->sphere_list.size() < this->number_of_sphere) {

auto tmp_location = this->make_point(300, ofRandom(0, 60), ofRandom(360), ofRandom(360));

auto radius = this->sphere_list.size() < 110 ? ofRandom(10, 50) : ofRandom(2, 20);

bool flag = true;

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

if (glm::distance(tmp_location, get<1>(this->sphere_list[i])) < get<2>(this->sphere_list[i]) + radius) {

flag = false;

break;

}

if (flag) {

ofColor color;

color.setHsb(ofRandom(255), 200, 255);

auto size = (radius * 2) / sqrt(3);

this->sphere_list.push_back(make_tuple(color, tmp_location, size));

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateZ(ofGetFrameNum() * 0.66666666666666666);

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

auto location = get<1>(this->sphere_list[i]);

auto size = get<2>(this->sphere_list[i]);

ofPushMatrix();

ofTranslate(location);

ofRotateZ(ofRandom(360));

ofRotateY(ofRandom(360));

ofRotateX(ofRandom(360));

ofColor color;

color.setHsb(ofRandom(255), 200, 255);

auto param = ofGetFrameNum() % 120;

float scale = 1;

if (param < 60) {

scale = ofMap(param, 0, 60, 0, 1);

}

else {

scale = ofMap(param, 60, 120, 1, 0);

}

ofFill();

ofSetColor(color);

ofDrawSphere(size * scale);

ofPopMatrix();

}

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/Insta20220616

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