openFrameworks – ページ 463 – プログラミング de 落描き

2021年5月5日

螺旋 / Rasen. Draw by openFrameworks

[ Video ]

[ About ]
螺旋 / Rasen.

[ Source ]

#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 mesh;
};

#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 mesh;

};

#include "ofApp.h"

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

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

	ofBackground(0);
	ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);
	ofEnableDepthTest();

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

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

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

	ofColor color;
	vector<ofColor> base_color_list;
	vector<int> hex_list = { 0xf44336, 0x9C27B0, 0x3F51B5, 0x03A9F4, 0x009688, 0x8BC34A, 0xFFEB3B, 0xFF9800 };
	for (auto hex : hex_list) {

		color.setHex(hex);
		base_color_list.push_back(color);
	}

	int span = 1;
	for (int i = 0; i < 800; i++) {

		int x = ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.0005), 0, 1, -300, 300);
		int y = 0;
		y = ofRandom(150, 170);
		y *= ofRandom(1) < 0.5 ? 1 : -1;
		int z = ofRandom(-20, 20);

		auto location = glm::vec3(x, y, z);
		auto rotation_x = glm::rotate(glm::mat4(), (ofGetFrameNum() * span + x * span + 300) * (float)DEG_TO_RAD, glm::vec3(1, 0, 0));
		location = glm::vec3(x, 0, 0) + glm::vec4(location, 0) * rotation_x;

		this->mesh.addVertex(location);

		int color_index = ofRandom(base_color_list.size());
		this->mesh.addColor(base_color_list[color_index]);
	}

	for (int i = 0; i < 1000; i++) {

		int x = (int)ofRandom(12) * 50 - 250 + ofRandom(-5, 5);
		int y = ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.001), 0, 1, -170, 170);
		int z = ofRandom(-10, 10);

		auto location = glm::vec3(x, y, z);
		auto rotation_x = glm::rotate(glm::mat4(), (ofGetFrameNum() * span + x * span + 300) * (float)DEG_TO_RAD, glm::vec3(1, 0, 0));
		location = glm::vec3(x, 0, 0) + glm::vec4(location, 0) * rotation_x;

		this->mesh.addVertex(location);

		int color_index = ofRandom(base_color_list.size());
		this->mesh.addColor(base_color_list[color_index]);
	}

	for (int i = 0; i < this->mesh.getNumVertices(); i++) {

		for (int k = i + 1; k < this->mesh.getNumVertices(); k++) {

			if (distance(this->mesh.getVertex(i), this->mesh.getVertex(k)) < 15) {

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

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

	this->cam.begin();

	this->mesh.drawWireframe();

	for (int i = 0; i < this->mesh.getNumVertices(); i++) {

		ofSetColor(this->mesh.getColor(i));
		ofDrawSphere(this->mesh.getVertex(i), 2.5);
	}

	this->cam.end();
}

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

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

100

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openFrameworks");

ofBackground(0);

ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);

ofEnableDepthTest();

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

}

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

void ofApp::update() {

ofSeedRandom(39);

this->mesh.clear();

ofColor color;

vector<ofColor> base_color_list;

vector<int> hex_list = { 0xf44336, 0x9C27B0, 0x3F51B5, 0x03A9F4, 0x009688, 0x8BC34A, 0xFFEB3B, 0xFF9800 };

for (auto hex : hex_list) {

color.setHex(hex);

base_color_list.push_back(color);

}

int span = 1;

for (int i = 0; i < 800; i++) {

int x = ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.0005), 0, 1, -300, 300);

int y = 0;

y = ofRandom(150, 170);

y *= ofRandom(1) < 0.5 ? 1 : -1;

int z = ofRandom(-20, 20);

auto location = glm::vec3(x, y, z);

auto rotation_x = glm::rotate(glm::mat4(), (ofGetFrameNum() * span + x * span + 300) * (float)DEG_TO_RAD, glm::vec3(1, 0, 0));

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

this->mesh.addVertex(location);

int color_index = ofRandom(base_color_list.size());

this->mesh.addColor(base_color_list[color_index]);

}

for (int i = 0; i < 1000; i++) {

int x = (int)ofRandom(12) * 50 - 250 + ofRandom(-5, 5);

int y = ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.001), 0, 1, -170, 170);

int z = ofRandom(-10, 10);

auto location = glm::vec3(x, y, z);

auto rotation_x = glm::rotate(glm::mat4(), (ofGetFrameNum() * span + x * span + 300) * (float)DEG_TO_RAD, glm::vec3(1, 0, 0));

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

this->mesh.addVertex(location);

int color_index = ofRandom(base_color_list.size());

this->mesh.addColor(base_color_list[color_index]);

}

for (int i = 0; i < this->mesh.getNumVertices(); i++) {

for (int k = i + 1; k < this->mesh.getNumVertices(); k++) {

if (distance(this->mesh.getVertex(i), this->mesh.getVertex(k)) < 15) {

this->mesh.addIndex(i);

this->mesh.addIndex(k);

}

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

void ofApp::draw() {

this->cam.begin();

this->mesh.drawWireframe();

for (int i = 0; i < this->mesh.getNumVertices(); i++) {

ofSetColor(this->mesh.getColor(i));

ofDrawSphere(this->mesh.getVertex(i), 2.5);

}

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20210505

2021年5月4日

Tetrahedron. Draw by openFrameworks

[ Video ]

[ About ]
Tetrahedron.

[ 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;
};

#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;

};

#include "ofApp.h"

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

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

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

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

	ofSeedRandom(39);
}

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

	this->cam.begin();

	auto flag = true;
	for (int x = -300; x <= 300; x += 200) {

		for (int y = -300; y <= 300; y += 200) {

			ofMesh mesh;
			auto param = 50;
			auto noise_seed = glm::vec3(ofRandom(1000), ofRandom(1000), ofRandom(1000));

			int angle_x = ofMap(ofNoise(noise_seed.x, ofGetFrameNum() * 0.003), 0, 1, -360, 360);
			auto rotation_x = glm::rotate(glm::mat4(), angle_x * (float)DEG_TO_RAD, glm::vec3(1, 0, 0));

			int angle_y = ofMap(ofNoise(noise_seed.y, ofGetFrameNum() * 0.003), 0, 1, -360, 360);
			auto rotation_y = glm::rotate(glm::mat4(), angle_y * (float)DEG_TO_RAD, glm::vec3(0, 1, 0));

			int angle_z = ofMap(ofNoise(noise_seed.z, ofGetFrameNum() * 0.003), 0, 1, -360, 360);
			auto rotation_z = glm::rotate(glm::mat4(), angle_y * (float)DEG_TO_RAD, glm::vec3(0, 0, 1));

			mesh.addVertex(glm::vec3(x, y, 0) + glm::vec4(param, param, param, 0) * rotation_z * rotation_y * rotation_z);
			mesh.addVertex(glm::vec3(x, y, 0) + glm::vec4(param, -param, -param, 0) * rotation_z * rotation_y * rotation_z);
			mesh.addVertex(glm::vec3(x, y, 0) + glm::vec4(-param, param, -param, 0) * rotation_z * rotation_y * rotation_z);
			mesh.addVertex(glm::vec3(x, y, 0) + glm::vec4(-param, -param, param, 0) * rotation_z * rotation_y * rotation_z);

			mesh.addIndex(0); mesh.addIndex(1); mesh.addIndex(2);
			mesh.addIndex(0); mesh.addIndex(1); mesh.addIndex(3);
			mesh.addIndex(0); mesh.addIndex(2); mesh.addIndex(3);
			mesh.addIndex(1); mesh.addIndex(2); mesh.addIndex(3);

			if (flag = !flag) {
			
				ofSetColor(239);
				mesh.drawFaces();
			}

			ofSetColor(39);
			mesh.drawWireframe();

			for (auto& vertex : mesh.getVertices()) {

				ofDrawSphere(vertex, 5);

			}
		}

		flag = !flag;
	}

	this->cam.end();
}

//--------------------------------------------------------------
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() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

this->cam.begin();

auto flag = true;

for (int x = -300; x <= 300; x += 200) {

for (int y = -300; y <= 300; y += 200) {

ofMesh mesh;

auto param = 50;

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

int angle_x = ofMap(ofNoise(noise_seed.x, ofGetFrameNum() * 0.003), 0, 1, -360, 360);

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

int angle_y = ofMap(ofNoise(noise_seed.y, ofGetFrameNum() * 0.003), 0, 1, -360, 360);

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

int angle_z = ofMap(ofNoise(noise_seed.z, ofGetFrameNum() * 0.003), 0, 1, -360, 360);

auto rotation_z = glm::rotate(glm::mat4(), angle_y * (float)DEG_TO_RAD, glm::vec3(0, 0, 1));

mesh.addVertex(glm::vec3(x, y, 0) + glm::vec4(param, param, param, 0) * rotation_z * rotation_y * rotation_z);

mesh.addVertex(glm::vec3(x, y, 0) + glm::vec4(param, -param, -param, 0) * rotation_z * rotation_y * rotation_z);

mesh.addVertex(glm::vec3(x, y, 0) + glm::vec4(-param, param, -param, 0) * rotation_z * rotation_y * rotation_z);

mesh.addVertex(glm::vec3(x, y, 0) + glm::vec4(-param, -param, param, 0) * rotation_z * rotation_y * rotation_z);

mesh.addIndex(0); mesh.addIndex(1); mesh.addIndex(2);

mesh.addIndex(0); mesh.addIndex(1); mesh.addIndex(3);

mesh.addIndex(0); mesh.addIndex(2); mesh.addIndex(3);

mesh.addIndex(1); mesh.addIndex(2); mesh.addIndex(3);

if (flag = !flag) {

ofSetColor(239);

mesh.drawFaces();

}

ofSetColor(39);

mesh.drawWireframe();

for (auto& vertex : mesh.getVertices()) {

ofDrawSphere(vertex, 5);

}

flag = !flag;

}

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20210504

2021年5月3日

Tornado ( Torus + z ). Draw by openFrameworks

[ Video ]

[ About ]
Tornado.

[ 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;
};

#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;

};

#include "ofApp.h"

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

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

	ofBackground(239);
	ofSetLineWidth(1);
	ofEnableDepthTest();
}

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

}

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

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

	int v_span = 1;
	int u_span = 60;

	float z = 360 * -2;
	float z_span = 1;
	ofMesh face, line;
	line.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);
	for (int v = 0; v <= 360 * 4; v += v_span) {

		bool flag = true;
		int u_start = ofMap(ofNoise(z * 0.005 + ofGetFrameNum() * 0.015), 0, 1, -720, 720);
		int next_u = ofMap(ofNoise((z + z_span) * 0.005 + ofGetFrameNum() * 0.015), 0, 1, -720, 720);
		for (int u = u_start; u < u_start + 360; u += u_span) {

			if (flag) {

				face.addVertex(this->make_point(200, 50, u, v) + glm::vec3(0, 0, z));
				face.addVertex(this->make_point(200, 50, u + u_span, v) + glm::vec3(0, 0, z));
				face.addVertex(this->make_point(200, 50, next_u + u_span, v + v_span) + glm::vec3(0, 0, z + z_span));
				face.addVertex(this->make_point(200, 50, next_u, v + v_span) + glm::vec3(0, 0, z + z_span));

				line.addVertex(this->make_point(200, 50, u, v) + glm::vec3(0, 0, z));
				line.addVertex(this->make_point(200, 50, u + u_span, v) + glm::vec3(0, 0, z));
				line.addVertex(this->make_point(200, 50, next_u + u_span, v + v_span) + glm::vec3(0, 0, z + z_span));
				line.addVertex(this->make_point(200, 50, next_u, v + v_span) + glm::vec3(0, 0, z + z_span));

				ofColor color;
				color.setHsb(ofMap(u, u_start, u_start + 360, 0, 255), 150, 255);

				face.addColor(color);
				face.addColor(color);
				face.addColor(color);
				face.addColor(color);

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

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

			next_u += u_span;
			flag = !flag;
		}

		z += z_span;
	}

	face.drawFaces();

	ofSetColor(39);
	line.drawWireframe();

	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());
}

100

101

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openframeworks");

ofBackground(239);

ofSetLineWidth(1);

ofEnableDepthTest();

}

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

void ofApp::update() {

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateX(270);

int v_span = 1;

int u_span = 60;

float z = 360 * -2;

float z_span = 1;

ofMesh face, line;

line.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);

for (int v = 0; v <= 360 * 4; v += v_span) {

bool flag = true;

int u_start = ofMap(ofNoise(z * 0.005 + ofGetFrameNum() * 0.015), 0, 1, -720, 720);

int next_u = ofMap(ofNoise((z + z_span) * 0.005 + ofGetFrameNum() * 0.015), 0, 1, -720, 720);

for (int u = u_start; u < u_start + 360; u += u_span) {

if (flag) {

face.addVertex(this->make_point(200, 50, u, v) + glm::vec3(0, 0, z));

face.addVertex(this->make_point(200, 50, u + u_span, v) + glm::vec3(0, 0, z));

face.addVertex(this->make_point(200, 50, next_u + u_span, v + v_span) + glm::vec3(0, 0, z + z_span));

face.addVertex(this->make_point(200, 50, next_u, v + v_span) + glm::vec3(0, 0, z + z_span));

line.addVertex(this->make_point(200, 50, u, v) + glm::vec3(0, 0, z));

line.addVertex(this->make_point(200, 50, u + u_span, v) + glm::vec3(0, 0, z));

line.addVertex(this->make_point(200, 50, next_u + u_span, v + v_span) + glm::vec3(0, 0, z + z_span));

line.addVertex(this->make_point(200, 50, next_u, v + v_span) + glm::vec3(0, 0, z + z_span));

ofColor color;

color.setHsb(ofMap(u, u_start, u_start + 360, 0, 255), 150, 255);

face.addColor(color);

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

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

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

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

}

next_u += u_span;

flag = !flag;

}

z += z_span;

}

face.drawFaces();

ofSetColor(39);

line.drawWireframe();

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/Insta20210503

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