ofMesh – ページ 191 – プログラミング de 落描き

2020年4月13日

Ring of Torus. openFrameworks

[ Video ]

[ About ]
Ring of 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;
};

#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);
	ofEnableDepthTest();
}

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

	ofSeedRandom(39);
}

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

	auto R = 200;
	auto r = 35;
	auto v_span = 8;
	auto u_span = 10;
	auto v = 0;

	this->cam.begin();
	ofRotateX(300);

	ofColor color;
	for (auto deg = 0; deg < 360; deg += v_span) {

		color.setHsb(ofMap(deg, 0, 360, 0, 255), 255, 255);

		ofMesh face, frame;
		frame.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);

		for (auto u = 0; u < 360; u += u_span) {

			vector<glm::vec3> vertices;
			vertices.push_back(this->make_point(R, r, u, v - v_span * 0.5));
			vertices.push_back(this->make_point(R, r, u + u_span, v - v_span * 0.5));
			vertices.push_back(this->make_point(R, r, u + u_span, v + v_span * 0.5));
			vertices.push_back(this->make_point(R, r, u, v + v_span * 0.5));

			int index = face.getNumVertices();
			face.addVertices(vertices);
			frame.addVertices(vertices);

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

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

		ofPushMatrix();
		ofRotateZ(deg);

		int n = 360 / v_span;
		int frame_number = ofGetFrameNum() * 8;
		int param = frame_number % (360 * n) - (v_span * n * 0.5);
		if (deg * n >= param && deg * n < param + v_span * n){
		
			ofRotateY(frame_number);
		}
		else {

			param = (frame_number + 180 * n) % (360 * n) - (v_span * n * 0.5);
			if (deg * n >= param && deg * n < param + v_span * n) {

				ofRotateY(frame_number * -1);
			}
		}

		ofSetColor(239);
		face.drawFaces();

		ofSetColor(39);
		frame.drawWireframe();

		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(60);

ofSetWindowTitle("openframeworks");

ofBackground(239);

ofEnableDepthTest();

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

auto R = 200;

auto r = 35;

auto v_span = 8;

auto u_span = 10;

auto v = 0;

this->cam.begin();

ofRotateX(300);

ofColor color;

for (auto deg = 0; deg < 360; deg += v_span) {

color.setHsb(ofMap(deg, 0, 360, 0, 255), 255, 255);

ofMesh face, frame;

frame.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);

for (auto u = 0; u < 360; u += u_span) {

vector<glm::vec3> vertices;

vertices.push_back(this->make_point(R, r, u, v - v_span * 0.5));

vertices.push_back(this->make_point(R, r, u + u_span, v - v_span * 0.5));

vertices.push_back(this->make_point(R, r, u + u_span, v + v_span * 0.5));

vertices.push_back(this->make_point(R, r, u, v + v_span * 0.5));

int index = face.getNumVertices();

face.addVertices(vertices);

frame.addVertices(vertices);

face.addIndex(index + 0); face.addIndex(index + 1); face.addIndex(index + 2);

face.addIndex(index + 0); face.addIndex(index + 2); face.addIndex(index + 3);

frame.addIndex(index + 0); frame.addIndex(index + 1);

frame.addIndex(index + 1); frame.addIndex(index + 2);

frame.addIndex(index + 2); frame.addIndex(index + 3);

frame.addIndex(index + 3); frame.addIndex(index + 0);

}

ofPushMatrix();

ofRotateZ(deg);

int n = 360 / v_span;

int frame_number = ofGetFrameNum() * 8;

int param = frame_number % (360 * n) - (v_span * n * 0.5);

if (deg * n >= param && deg * n < param + v_span * n){

ofRotateY(frame_number);

}

else {

param = (frame_number + 180 * n) % (360 * n) - (v_span * n * 0.5);

if (deg * n >= param && deg * n < param + v_span * n) {

ofRotateY(frame_number * -1);

}

ofSetColor(239);

face.drawFaces();

ofSetColor(39);

frame.drawWireframe();

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/Insta20200413

2020年4月8日2020年4月8日

Squares and afterimages. openFrameworks

[ Video ]

[ About ]
正方形を回転させて、辺の残像を描きます。

Rotate the square to draw an afterimage of side.

[ 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 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 frame;

};

#include "ofApp.h"

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

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

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

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

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

	ofSeedRandom(39);

	this->frame.clear();

	int len = 250;
	auto noise_seed = glm::vec3(ofRandom(1000), ofRandom(1000), ofRandom(1000));

	for (int i = 0; i < 10; i++) {

		auto angle_x = ofMap(ofNoise(noise_seed.x, i * 0.005 + ofGetFrameNum() * 0.005), 0, 1, -PI, PI);
		auto angle_y = ofMap(ofNoise(noise_seed.y, i * 0.005 + ofGetFrameNum() * 0.005), 0, 1, -PI, PI);
		auto angle_z = ofMap(ofNoise(noise_seed.z, i * 0.005 + ofGetFrameNum() * 0.005), 0, 1, -PI, 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));

		auto index = this->frame.getNumVertices();
		vector<glm::vec3> vertices;

		vertices.push_back(glm::vec3(len * -0.5, len *  0.5, len * -0.5));
		vertices.push_back(glm::vec3(len *  0.5, len *  0.5, len * -0.5));
		vertices.push_back(glm::vec3(len *  0.5, len *  0.5, len *  0.5));
		vertices.push_back(glm::vec3(len * -0.5, len *  0.5, len *  0.5));

		vertices.push_back(glm::vec3(len * -0.5, len * -0.5, len * -0.5));
		vertices.push_back(glm::vec3(len *  0.5, len * -0.5, len * -0.5));
		vertices.push_back(glm::vec3(len *  0.5, len * -0.5, len *  0.5));
		vertices.push_back(glm::vec3(len * -0.5, len * -0.5, len *  0.5));

		for (auto& vertex : vertices) {

			vertex = glm::vec4(vertex, 0) * rotation_z * rotation_y * rotation_x;
			this->frame.addColor(ofColor(39, ofMap(i, 0, 10, 64, 255)));
		}

		this->frame.addVertices(vertices);

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

		this->frame.addIndex(index + 4); this->frame.addIndex(index + 5);
		this->frame.addIndex(index + 5); this->frame.addIndex(index + 6);
		this->frame.addIndex(index + 6); this->frame.addIndex(index + 7);
		this->frame.addIndex(index + 7); this->frame.addIndex(index + 4);

		this->frame.addIndex(index + 0); this->frame.addIndex(index + 4);
		this->frame.addIndex(index + 1); this->frame.addIndex(index + 5);
		this->frame.addIndex(index + 2); this->frame.addIndex(index + 6);
		this->frame.addIndex(index + 3); this->frame.addIndex(index + 7);
	}
}

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

	this->cam.begin();

	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(239);

ofSetLineWidth(1.5);

ofEnableDepthTest();

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

}

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

void ofApp::update() {

ofSeedRandom(39);

this->frame.clear();

int len = 250;

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

for (int i = 0; i < 10; i++) {

auto angle_x = ofMap(ofNoise(noise_seed.x, i * 0.005 + ofGetFrameNum() * 0.005), 0, 1, -PI, PI);

auto angle_y = ofMap(ofNoise(noise_seed.y, i * 0.005 + ofGetFrameNum() * 0.005), 0, 1, -PI, PI);

auto angle_z = ofMap(ofNoise(noise_seed.z, i * 0.005 + ofGetFrameNum() * 0.005), 0, 1, -PI, 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));

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

vector<glm::vec3> vertices;

vertices.push_back(glm::vec3(len * -0.5, len * 0.5, len * -0.5));

vertices.push_back(glm::vec3(len * 0.5, len * 0.5, len * -0.5));

vertices.push_back(glm::vec3(len * 0.5, len * 0.5, len * 0.5));

vertices.push_back(glm::vec3(len * -0.5, len * 0.5, len * 0.5));

vertices.push_back(glm::vec3(len * -0.5, len * -0.5, len * -0.5));

vertices.push_back(glm::vec3(len * 0.5, len * -0.5, len * -0.5));

vertices.push_back(glm::vec3(len * 0.5, len * -0.5, len * 0.5));

vertices.push_back(glm::vec3(len * -0.5, len * -0.5, len * 0.5));

for (auto& vertex : vertices) {

vertex = glm::vec4(vertex, 0) * rotation_z * rotation_y * rotation_x;

this->frame.addColor(ofColor(39, ofMap(i, 0, 10, 64, 255)));

}

this->frame.addVertices(vertices);

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

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

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

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

this->frame.addIndex(index + 4); this->frame.addIndex(index + 5);

this->frame.addIndex(index + 5); this->frame.addIndex(index + 6);

this->frame.addIndex(index + 6); this->frame.addIndex(index + 7);

this->frame.addIndex(index + 7); this->frame.addIndex(index + 4);

this->frame.addIndex(index + 0); this->frame.addIndex(index + 4);

this->frame.addIndex(index + 1); this->frame.addIndex(index + 5);

this->frame.addIndex(index + 2); this->frame.addIndex(index + 6);

this->frame.addIndex(index + 3); this->frame.addIndex(index + 7);

}

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

void ofApp::draw() {

this->cam.begin();

this->frame.drawWireframe();

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20200408

2020年4月7日2020年4月7日

Stillness and motion. openFrameworks

[ Video ]

[ About ]
Noiseに加える引数の値をフレーム数で調整。

Adjusts the value of the argument added to Noise by the number of frames.

[ 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;
	ofIcoSpherePrimitive ico_sphere;
	ofMesh mesh, frame;
	float noise_seed;
};

#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;

ofIcoSpherePrimitive ico_sphere;

ofMesh mesh, frame;

float noise_seed;

};

#include "ofApp.h"

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

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

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

	this->ico_sphere = ofIcoSpherePrimitive(65, 2);
	this->frame.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);

	this->noise_seed = ofRandom(1000);
}

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

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

	auto triangle_list = this->ico_sphere.getMesh().getUniqueFaces();

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

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

			glm::vec3 location = glm::vec3(x, y, 0);
			for (auto& triangle : triangle_list) {

				auto mesh_index = this->mesh.getNumVertices();
				auto frame_index = this->frame.getNumVertices();
				glm::vec3 avg = location + (triangle.getVertex(0) + triangle.getVertex(1) + triangle.getVertex(2)) / 3;
				auto noise_value = ofNoise(glm::vec4(avg * 0.015, this->noise_seed));
				auto noise_radius = 0;

				if (noise_value < 0.75) {

					noise_radius = 65;
				}
				else {

					noise_radius = ofMap(noise_value, 0.75, 1.0, 65, 120);
				}

				this->mesh.addVertex(location + glm::normalize(triangle.getVertex(0)) * noise_radius);
				this->mesh.addVertex(location + glm::normalize(triangle.getVertex(1)) * noise_radius);
				this->mesh.addVertex(location + glm::normalize(triangle.getVertex(2)) * noise_radius);

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

				avg = (this->mesh.getVertex(mesh_index + 0) + this->mesh.getVertex(mesh_index + 1) + this->mesh.getVertex(mesh_index + 2)) / 3;

				this->frame.addVertex(avg);
				this->frame.addVertex(location);

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

	if (ofGetFrameNum() % 90 < 60) {

		this->noise_seed += ofMap(ofGetFrameNum() % 90, 0, 60, 0.05, 0);
	}
}

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

	this->cam.begin();

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

	ofSetColor(39);
	this->mesh.drawWireframe();
	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(239);

ofSetLineWidth(1.5);

ofEnableDepthTest();

this->ico_sphere = ofIcoSpherePrimitive(65, 2);

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

this->noise_seed = ofRandom(1000);

}

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

void ofApp::update() {

this->mesh.clear();

this->frame.clear();

auto triangle_list = this->ico_sphere.getMesh().getUniqueFaces();

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

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

glm::vec3 location = glm::vec3(x, y, 0);

for (auto& triangle : triangle_list) {

auto mesh_index = this->mesh.getNumVertices();

auto frame_index = this->frame.getNumVertices();

glm::vec3 avg = location + (triangle.getVertex(0) + triangle.getVertex(1) + triangle.getVertex(2)) / 3;

auto noise_value = ofNoise(glm::vec4(avg * 0.015, this->noise_seed));

auto noise_radius = 0;

if (noise_value < 0.75) {

noise_radius = 65;

}

else {

noise_radius = ofMap(noise_value, 0.75, 1.0, 65, 120);

}

this->mesh.addVertex(location + glm::normalize(triangle.getVertex(0)) * noise_radius);

this->mesh.addVertex(location + glm::normalize(triangle.getVertex(1)) * noise_radius);

this->mesh.addVertex(location + glm::normalize(triangle.getVertex(2)) * noise_radius);

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

avg = (this->mesh.getVertex(mesh_index + 0) + this->mesh.getVertex(mesh_index + 1) + this->mesh.getVertex(mesh_index + 2)) / 3;

this->frame.addVertex(avg);

this->frame.addVertex(location);

this->frame.addIndex(frame_index + 0); this->frame.addIndex(frame_index + 1);

}

if (ofGetFrameNum() % 90 < 60) {

this->noise_seed += ofMap(ofGetFrameNum() % 90, 0, 60, 0.05, 0);

}

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

void ofApp::draw() {

this->cam.begin();

ofSetColor(239);

this->mesh.draw();

ofSetColor(39);

this->mesh.drawWireframe();

this->frame.drawWireframe();

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20200407

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