ofMesh – ページ 97 – プログラミング de 落描き

2021年11月15日2021年11月15日

Gradation one-sixth torus. Draw by openFrameworks

[ Video ]

[ About ]
欠けているトーラスをグラデーションで色付けする。

Color the missing torus with a gradient.

[ 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(255);
	ofSetColor(255);
	ofEnableDepthTest();
}

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

	ofSeedRandom(39);
}

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

	this->cam.begin();

	int count = 0;
	for (int x = -300; x <= 300; x += 600) {

		for (int y = -300; y <= 300; y += 600) {

			ofPushMatrix();
			ofTranslate(x, y, 0);
			ofRotateY(count++ * 45 + ofGetFrameNum());

			for (int r = 60; r <= 90; r += 30) {

				int v_span = 1;
				int u_span = 60;

				ofMesh face, line;
				line.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);
				for (int v = 0; v <= 360; v += v_span) {

					bool flag = true;
					int u_start = ofMap(ofNoise(r * cos(v * DEG_TO_RAD)  * 0.008, r * sin(v * DEG_TO_RAD) * 0.008, ofGetFrameNum() * 0.0035), 0, 1, -360, 360);
					int next_u = ofMap(ofNoise(r * cos((v + v_span) * DEG_TO_RAD) * 0.008, r * sin((v + v_span) * DEG_TO_RAD) * 0.008, ofGetFrameNum() * 0.0035), 0, 1, -360, 360);
					for (int u = u_start; u < u_start + 360; u += u_span) {

						if (flag) {

							face.addVertex(this->make_point(200, r, u, v));
							face.addVertex(this->make_point(200, r, u + u_span, v));
							face.addVertex(this->make_point(200, r, next_u + u_span, v + v_span));
							face.addVertex(this->make_point(200, r, next_u, v + v_span));

							line.addVertex(this->make_point(200, r, u, v));
							line.addVertex(this->make_point(200, r, u + u_span, v));
							line.addVertex(this->make_point(200, r, next_u + u_span, v + v_span));
							line.addVertex(this->make_point(200, r, next_u, v + v_span));

							ofColor color;
							auto hue = (count * 64 + r * 4 + (int)ofMap(v, 0, 360, 0, 255)) % 255;
							color.setHsb(hue, 180, 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;
					}
				}

				face.drawFaces();
				line.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(255);

ofSetColor(255);

ofEnableDepthTest();

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

this->cam.begin();

int count = 0;

for (int x = -300; x <= 300; x += 600) {

for (int y = -300; y <= 300; y += 600) {

ofPushMatrix();

ofTranslate(x, y, 0);

ofRotateY(count++ * 45 + ofGetFrameNum());

for (int r = 60; r <= 90; r += 30) {

int v_span = 1;

int u_span = 60;

ofMesh face, line;

line.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);

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

bool flag = true;

int u_start = ofMap(ofNoise(r * cos(v * DEG_TO_RAD) * 0.008, r * sin(v * DEG_TO_RAD) * 0.008, ofGetFrameNum() * 0.0035), 0, 1, -360, 360);

int next_u = ofMap(ofNoise(r * cos((v + v_span) * DEG_TO_RAD) * 0.008, r * sin((v + v_span) * DEG_TO_RAD) * 0.008, ofGetFrameNum() * 0.0035), 0, 1, -360, 360);

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

if (flag) {

face.addVertex(this->make_point(200, r, u, v));

face.addVertex(this->make_point(200, r, u + u_span, v));

face.addVertex(this->make_point(200, r, next_u + u_span, v + v_span));

face.addVertex(this->make_point(200, r, next_u, v + v_span));

line.addVertex(this->make_point(200, r, u, v));

line.addVertex(this->make_point(200, r, u + u_span, v));

line.addVertex(this->make_point(200, r, next_u + u_span, v + v_span));

line.addVertex(this->make_point(200, r, next_u, v + v_span));

ofColor color;

auto hue = (count * 64 + r * 4 + (int)ofMap(v, 0, 360, 0, 255)) % 255;

color.setHsb(hue, 180, 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;

}

face.drawFaces();

line.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/Insta20211115

2021年11月13日

Mixing squares and circles. Draw by openFrameworks

[ Video ]

[ About ]
ノイズの値で四角形と円をミックスする。

Mix squares and circles with noise values.

[ 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::vec2 make_point(int len, int param);

	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::vec2 make_point(int len, int param);

ofEasyCam cam;

};

#include "ofApp.h"

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

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

	ofBackground(0);
	ofSetLineWidth(2);
	ofEnableDepthTest();
}

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

}

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

	this->cam.begin();

	int len = 100;
	int width = len * 0.15;

	for (int x = -len * 1.2; x <= len * 1.2; x += len * 1.2) {

		for (int y = -len * 1.2; y <= len * 1.2; y += len * 1.2) {

			ofPushMatrix();
			ofTranslate(x, y, 0);

			for (int z = -len; z <= len; z += width) {

				ofMesh mesh, frame;
				frame.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);
				for (int param = 0; param <= 100; param++) {

					int deg = param * 3.6 - 135;
					auto noise_value = ofNoise(x + cos(deg * DEG_TO_RAD) * 0.15, y + sin(deg * DEG_TO_RAD) * 0.15, z * 0.005, ofGetFrameNum() * 0.008);

					vector<glm::vec3> vertices;
					if (noise_value > 0.5) {

						vertices.push_back(glm::vec3(this->make_point(len, param), z + width * 0.5));
						vertices.push_back(glm::vec3(this->make_point(len, param), z - width * 0.5));
					}
					else {

						vertices.push_back(glm::vec3(len * 0.4 * cos(deg * DEG_TO_RAD), len * 0.4 * sin(deg * DEG_TO_RAD), z + width * 0.5));
						vertices.push_back(glm::vec3(len * 0.4 * cos(deg * DEG_TO_RAD), len * 0.4 * sin(deg * DEG_TO_RAD), z - width * 0.5));
					}

					mesh.addVertices(vertices);
					frame.addVertices(vertices);

					int index = mesh.getNumVertices() - 1;
					if (param > 0) {

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

						frame.addIndex(index); frame.addIndex(index - 2);
						frame.addIndex(index - 1); frame.addIndex(index - 3);
					}
				}

				ofSetColor(0);
				mesh.draw();

				ofSetColor(255);
				frame.drawWireframe();
			}

			ofPopMatrix();
		}
	}

	this->cam.end();
}

//--------------------------------------------------------------
glm::vec2 ofApp::make_point(int len, int param) {

	param = param % 100;
	if (param < 25) {

		return glm::vec2(ofMap(param, 0, 25, -len * 0.5, len * 0.5), -len * 0.5);
	}
	else if (param < 50) {

		return glm::vec2(len * 0.5, ofMap(param, 25, 50, -len * 0.5, len * 0.5));
	}
	else if (param < 75) {

		return glm::vec2(ofMap(param, 50, 75, len * 0.5, -len * 0.5), len * 0.5);
	}
	else {

		return glm::vec2(-len * 0.5, ofMap(param, 75, 100, len * 0.5, -len * 0.5));
	}
}

//--------------------------------------------------------------
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(0);

ofSetLineWidth(2);

ofEnableDepthTest();

}

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

void ofApp::update() {

}

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

void ofApp::draw() {

this->cam.begin();

int len = 100;

int width = len * 0.15;

for (int x = -len * 1.2; x <= len * 1.2; x += len * 1.2) {

for (int y = -len * 1.2; y <= len * 1.2; y += len * 1.2) {

ofPushMatrix();

ofTranslate(x, y, 0);

for (int z = -len; z <= len; z += width) {

ofMesh mesh, frame;

frame.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);

for (int param = 0; param <= 100; param++) {

int deg = param * 3.6 - 135;

auto noise_value = ofNoise(x + cos(deg * DEG_TO_RAD) * 0.15, y + sin(deg * DEG_TO_RAD) * 0.15, z * 0.005, ofGetFrameNum() * 0.008);

vector<glm::vec3> vertices;

if (noise_value > 0.5) {

vertices.push_back(glm::vec3(this->make_point(len, param), z + width * 0.5));

vertices.push_back(glm::vec3(this->make_point(len, param), z - width * 0.5));

}

else {

vertices.push_back(glm::vec3(len * 0.4 * cos(deg * DEG_TO_RAD), len * 0.4 * sin(deg * DEG_TO_RAD), z + width * 0.5));

vertices.push_back(glm::vec3(len * 0.4 * cos(deg * DEG_TO_RAD), len * 0.4 * sin(deg * DEG_TO_RAD), z - width * 0.5));

}

mesh.addVertices(vertices);

frame.addVertices(vertices);

int index = mesh.getNumVertices() - 1;

if (param > 0) {

mesh.addIndex(index); mesh.addIndex(index - 2); mesh.addIndex(index - 3);

mesh.addIndex(index); mesh.addIndex(index - 1); mesh.addIndex(index - 3);

frame.addIndex(index); frame.addIndex(index - 2);

frame.addIndex(index - 1); frame.addIndex(index - 3);

}

ofSetColor(0);

mesh.draw();

ofSetColor(255);

frame.drawWireframe();

}

ofPopMatrix();

}

this->cam.end();

}

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

glm::vec2 ofApp::make_point(int len, int param) {

param = param % 100;

if (param < 25) {

return glm::vec2(ofMap(param, 0, 25, -len * 0.5, len * 0.5), -len * 0.5);

}

else if (param < 50) {

return glm::vec2(len * 0.5, ofMap(param, 25, 50, -len * 0.5, len * 0.5));

}

else if (param < 75) {

return glm::vec2(ofMap(param, 50, 75, len * 0.5, -len * 0.5), len * 0.5);

}

else {

return glm::vec2(-len * 0.5, ofMap(param, 75, 100, len * 0.5, -len * 0.5));

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20211113

2021年11月12日2021年11月12日

Sinking Hexagon. Draw by openFrameworks

[ Video ]

[ About ]
似たアルゴリズムでも見た目は大分異なる。

Even though the algorithms are similar, they look very different.

[ 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) {};

	void setHexagonToMesh(ofMesh& face_target, ofMesh& frame_target, glm::vec3 location, float radius, float height);

	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 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) {};

void setHexagonToMesh(ofMesh& face_target, ofMesh& frame_target, glm::vec3 location, float radius, float height);

ofEasyCam cam;

ofMesh face, frame;

};

#include "ofApp.h"

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

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

	ofBackground(255);
	ofEnableDepthTest();

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

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

	ofSeedRandom(39);

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

	auto radius = 15;
	auto x_span = radius * sqrt(3);
	auto flg = true;
	for (float y = -600; y <= 600; y += radius * 1.5) {

		for (float x = -600; x <= 600; x += x_span) {

			glm::vec2 location;
			if (flg) {

				location = glm::vec2(x, y);
			}
			else {

				location = glm::vec2(x + (x_span / 2), y);
			}

			auto noise_value = ofNoise(glm::vec3(location.x * 0.0025, location.y * 0.0025, ofGetFrameNum() * 0.01));
			auto height = 250.f;
			if (noise_value > 0.55){

				if (noise_value <= 0.65) {
					
					height = ofMap(noise_value, 0.55, 0.65, 250, 50);
				}
				else {

					height = 50;
				}
			}

			this->setHexagonToMesh(this->face, this->frame, glm::vec3(location, 0), radius, height);
		}
		flg = !flg;
	}
}

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

	this->cam.begin();
	ofRotateZ(ofGetFrameNum() * 0.6666666);

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

	this->cam.end();
}

//--------------------------------------------------------------
void ofApp::setHexagonToMesh(ofMesh& face_target, ofMesh& frame_target, glm::vec3 location, float radius, float height) {

	ofColor face_color = ofColor(ofMap(height, 50, 250, 0, 255));
	ofColor frame_color = ofColor(ofMap(height, 50, 250, 255, 0));

	for (int deg = 90; deg < 450; deg += 60) {

		auto face_radius = radius - 0.5;
		auto face_index = face_target.getNumVertices();

		vector<glm::vec3> vertices;
		vertices.push_back(glm::vec3(0, 0, 0));
		vertices.push_back(glm::vec3(face_radius * cos(deg * DEG_TO_RAD), face_radius * sin(deg * DEG_TO_RAD), 0));
		vertices.push_back(glm::vec3(face_radius * cos((deg + 60) * DEG_TO_RAD), face_radius * sin((deg + 60) * DEG_TO_RAD), 0));
		vertices.push_back(glm::vec3(0, 0, height));
		vertices.push_back(glm::vec3(face_radius * cos((deg + 60) * DEG_TO_RAD), face_radius * sin((deg + 60) * DEG_TO_RAD), height));
		vertices.push_back(glm::vec3(face_radius * cos(deg * DEG_TO_RAD), face_radius * sin(deg * DEG_TO_RAD), height));

		for (auto& vertex : vertices) {

			vertex = location + glm::vec4(vertex, 0);
		}

		face_target.addVertices(vertices);

		face_target.addIndex(face_index + 0); face_target.addIndex(face_index + 1); face_target.addIndex(face_index + 2);
		face_target.addIndex(face_index + 3); face_target.addIndex(face_index + 4); face_target.addIndex(face_index + 5);
		face_target.addIndex(face_index + 1); face_target.addIndex(face_index + 2); face_target.addIndex(face_index + 4);
		face_target.addIndex(face_index + 1); face_target.addIndex(face_index + 4); face_target.addIndex(face_index + 5);

		auto frame_index = frame_target.getNumVertices();

		vertices.clear();
		vertices.push_back(glm::vec3(0, 0, 0));
		vertices.push_back(glm::vec3(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD), 0));
		vertices.push_back(glm::vec3(radius * cos((deg + 60) * DEG_TO_RAD), radius * sin((deg + 60) * DEG_TO_RAD), 0));
		vertices.push_back(glm::vec3(0, 0, height));
		vertices.push_back(glm::vec3(radius * cos((deg + 60) * DEG_TO_RAD), radius * sin((deg + 60) * DEG_TO_RAD), height));
		vertices.push_back(glm::vec3(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD), height));

		for (auto& vertex : vertices) {

			vertex = location + glm::vec4(vertex, 0);
		}

		frame_target.addVertices(vertices);

		frame_target.addIndex(frame_index + 1); frame_target.addIndex(frame_index + 2);
		frame_target.addIndex(frame_index + 4); frame_target.addIndex(frame_index + 5);
		frame_target.addIndex(frame_index + 1); frame_target.addIndex(frame_index + 5);
		frame_target.addIndex(frame_index + 2); frame_target.addIndex(frame_index + 4);

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

			face_target.addColor(face_color);
			frame_target.addColor(frame_color);
		}
	}
}

//--------------------------------------------------------------
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);

ofEnableDepthTest();

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

}

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

void ofApp::update() {

ofSeedRandom(39);

this->face.clear();

this->frame.clear();

auto radius = 15;

auto x_span = radius * sqrt(3);

auto flg = true;

for (float y = -600; y <= 600; y += radius * 1.5) {

for (float x = -600; x <= 600; x += x_span) {

glm::vec2 location;

if (flg) {

location = glm::vec2(x, y);

}

else {

location = glm::vec2(x + (x_span / 2), y);

}

auto noise_value = ofNoise(glm::vec3(location.x * 0.0025, location.y * 0.0025, ofGetFrameNum() * 0.01));

auto height = 250.f;

if (noise_value > 0.55){

if (noise_value <= 0.65) {

height = ofMap(noise_value, 0.55, 0.65, 250, 50);

}

else {

height = 50;

}

this->setHexagonToMesh(this->face, this->frame, glm::vec3(location, 0), radius, height);

}

flg = !flg;

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateZ(ofGetFrameNum() * 0.6666666);

this->face.draw();

this->frame.draw();

this->cam.end();

}

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

void ofApp::setHexagonToMesh(ofMesh& face_target, ofMesh& frame_target, glm::vec3 location, float radius, float height) {

ofColor face_color = ofColor(ofMap(height, 50, 250, 0, 255));

ofColor frame_color = ofColor(ofMap(height, 50, 250, 255, 0));

for (int deg = 90; deg < 450; deg += 60) {

auto face_radius = radius - 0.5;

auto face_index = face_target.getNumVertices();

vector<glm::vec3> vertices;

vertices.push_back(glm::vec3(0, 0, 0));

vertices.push_back(glm::vec3(face_radius * cos(deg * DEG_TO_RAD), face_radius * sin(deg * DEG_TO_RAD), 0));

vertices.push_back(glm::vec3(face_radius * cos((deg + 60) * DEG_TO_RAD), face_radius * sin((deg + 60) * DEG_TO_RAD), 0));

vertices.push_back(glm::vec3(0, 0, height));

vertices.push_back(glm::vec3(face_radius * cos((deg + 60) * DEG_TO_RAD), face_radius * sin((deg + 60) * DEG_TO_RAD), height));

vertices.push_back(glm::vec3(face_radius * cos(deg * DEG_TO_RAD), face_radius * sin(deg * DEG_TO_RAD), height));

for (auto& vertex : vertices) {

vertex = location + glm::vec4(vertex, 0);

}

face_target.addVertices(vertices);

face_target.addIndex(face_index + 0); face_target.addIndex(face_index + 1); face_target.addIndex(face_index + 2);

face_target.addIndex(face_index + 3); face_target.addIndex(face_index + 4); face_target.addIndex(face_index + 5);

face_target.addIndex(face_index + 1); face_target.addIndex(face_index + 2); face_target.addIndex(face_index + 4);

face_target.addIndex(face_index + 1); face_target.addIndex(face_index + 4); face_target.addIndex(face_index + 5);

auto frame_index = frame_target.getNumVertices();

vertices.clear();

vertices.push_back(glm::vec3(0, 0, 0));

vertices.push_back(glm::vec3(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD), 0));

vertices.push_back(glm::vec3(radius * cos((deg + 60) * DEG_TO_RAD), radius * sin((deg + 60) * DEG_TO_RAD), 0));

vertices.push_back(glm::vec3(0, 0, height));

vertices.push_back(glm::vec3(radius * cos((deg + 60) * DEG_TO_RAD), radius * sin((deg + 60) * DEG_TO_RAD), height));

vertices.push_back(glm::vec3(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD), height));

for (auto& vertex : vertices) {

vertex = location + glm::vec4(vertex, 0);

}

frame_target.addVertices(vertices);

frame_target.addIndex(frame_index + 1); frame_target.addIndex(frame_index + 2);

frame_target.addIndex(frame_index + 4); frame_target.addIndex(frame_index + 5);

frame_target.addIndex(frame_index + 1); frame_target.addIndex(frame_index + 5);

frame_target.addIndex(frame_index + 2); frame_target.addIndex(frame_index + 4);

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

face_target.addColor(face_color);

frame_target.addColor(frame_color);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20211112

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