openFrameworks – ページ 384 – プログラミング de 落描き

2022年9月16日

Broken Cube. Draw by openFrameworks

[ Video ]

[ About ]
壊れたキューブ。

[ 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(30);
	ofSetWindowTitle("openFrameworks");

	ofBackground(0);
	//ofSetLineWidth(1.5);
	ofEnableDepthTest();

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

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

	ofSeedRandom(39);

	this->frame.clear();

	int span = 10;
	float threshold = 0.5;
	float frame_param = ofGetFrameNum() * 0.05;
	float coordinate_param = 0.0065;
	ofColor line_color;

	for (int len = 300; len > 200; len -= 20) {

		line_color = ofColor(ofMap(len, 200, 300, 0, 255), ofMap(len, 200, 300, 0, 255));
		int z = len + span * 0.5;

		float angle;
		glm::highp_mat4 rotation;
		for (int i = 0; i <= 6; i++) {

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

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

					if (i <= 4) {

						angle = PI * 0.5 * i;
						rotation = glm::rotate(glm::mat4(), angle, glm::vec3(0, 1, 0));
					}

					if (i == 5) {

						angle = PI * 0.5;
						rotation = glm::rotate(glm::mat4(), angle, glm::vec3(1, 0, 0));
					}

					if (i == 6) {

						angle = PI * 0.5 * 3;
						rotation = glm::rotate(glm::mat4(), angle, glm::vec3(1, 0, 0));
					}


					glm::vec3 noise_location = glm::vec4(x, y, z, 0) * rotation;
					auto noise_value = ofNoise(glm::vec4(noise_location * coordinate_param, frame_param));
					if (noise_value < threshold) { continue; }

					glm::vec3 loc_1 = glm::vec4(x - span, y, z, 0) * rotation;
					auto noise_1 = ofNoise(glm::vec4(loc_1 * coordinate_param, frame_param));
					glm::vec3 loc_2 = glm::vec4(x, y + span, z, 0) * rotation;
					auto noise_2 = ofNoise(glm::vec4(loc_2 * coordinate_param, frame_param));
					glm::vec3 loc_3 = glm::vec4(x + span, y, z, 0) * rotation;
					auto noise_3 = ofNoise(glm::vec4(loc_3 * coordinate_param, frame_param));
					glm::vec3 loc4 = glm::vec4(x, y - span, z, 0) * rotation;
					auto noise_4 = ofNoise(glm::vec4(loc4 * coordinate_param, frame_param));

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

					vertices.push_back(glm::vec4(x - span * 0.5, y - span * 0.5, z, 0) * rotation);
					vertices.push_back(glm::vec4(x + span * 0.5, y - span * 0.5, z, 0) * rotation);
					vertices.push_back(glm::vec4(x + span * 0.5, y + span * 0.5, z, 0) * rotation);
					vertices.push_back(glm::vec4(x - span * 0.5, y + span * 0.5, z, 0) * rotation);

					if (noise_1 < threshold || x == -len) {

						this->frame.addVertex(vertices[0]);
						this->frame.addVertex(vertices[3]);

						this->frame.addColor(line_color);
						this->frame.addColor(line_color);

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

					if (noise_2 < threshold || y == len) {

						this->frame.addVertex(vertices[2]);
						this->frame.addVertex(vertices[3]);

						this->frame.addColor(line_color);
						this->frame.addColor(line_color);

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

					if (noise_3 < threshold || x == len) {

						this->frame.addVertex(vertices[1]);
						this->frame.addVertex(vertices[2]);

						this->frame.addColor(line_color);
						this->frame.addColor(line_color);

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

					if (noise_4 < threshold || y == -len) {

						this->frame.addVertex(vertices[0]);
						this->frame.addVertex(vertices[1]);

						this->frame.addColor(line_color);
						this->frame.addColor(line_color);

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

					}
				}
			}
		}
	}
}

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

	this->cam.begin();
	ofRotateY(ofGetFrameNum());
	ofRotateX(ofGetFrameNum() * 1.5);

	this->frame.draw();

	this->cam.end();
}

//--------------------------------------------------------------
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(1.5);

ofEnableDepthTest();

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

}

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

void ofApp::update() {

ofSeedRandom(39);

this->frame.clear();

int span = 10;

float threshold = 0.5;

float frame_param = ofGetFrameNum() * 0.05;

float coordinate_param = 0.0065;

ofColor line_color;

for (int len = 300; len > 200; len -= 20) {

line_color = ofColor(ofMap(len, 200, 300, 0, 255), ofMap(len, 200, 300, 0, 255));

int z = len + span * 0.5;

float angle;

glm::highp_mat4 rotation;

for (int i = 0; i <= 6; i++) {

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

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

if (i <= 4) {

angle = PI * 0.5 * i;

rotation = glm::rotate(glm::mat4(), angle, glm::vec3(0, 1, 0));

}

if (i == 5) {

angle = PI * 0.5;

rotation = glm::rotate(glm::mat4(), angle, glm::vec3(1, 0, 0));

}

if (i == 6) {

angle = PI * 0.5 * 3;

rotation = glm::rotate(glm::mat4(), angle, glm::vec3(1, 0, 0));

}

glm::vec3 noise_location = glm::vec4(x, y, z, 0) * rotation;

auto noise_value = ofNoise(glm::vec4(noise_location * coordinate_param, frame_param));

if (noise_value < threshold) { continue; }

glm::vec3 loc_1 = glm::vec4(x - span, y, z, 0) * rotation;

auto noise_1 = ofNoise(glm::vec4(loc_1 * coordinate_param, frame_param));

glm::vec3 loc_2 = glm::vec4(x, y + span, z, 0) * rotation;

auto noise_2 = ofNoise(glm::vec4(loc_2 * coordinate_param, frame_param));

glm::vec3 loc_3 = glm::vec4(x + span, y, z, 0) * rotation;

auto noise_3 = ofNoise(glm::vec4(loc_3 * coordinate_param, frame_param));

glm::vec3 loc4 = glm::vec4(x, y - span, z, 0) * rotation;

auto noise_4 = ofNoise(glm::vec4(loc4 * coordinate_param, frame_param));

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

vector<glm::vec3> vertices;

vertices.push_back(glm::vec4(x - span * 0.5, y - span * 0.5, z, 0) * rotation);

vertices.push_back(glm::vec4(x + span * 0.5, y - span * 0.5, z, 0) * rotation);

vertices.push_back(glm::vec4(x + span * 0.5, y + span * 0.5, z, 0) * rotation);

vertices.push_back(glm::vec4(x - span * 0.5, y + span * 0.5, z, 0) * rotation);

if (noise_1 < threshold || x == -len) {

this->frame.addVertex(vertices[0]);

this->frame.addVertex(vertices[3]);

this->frame.addColor(line_color);

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

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

}

if (noise_2 < threshold || y == len) {

this->frame.addVertex(vertices[2]);

this->frame.addVertex(vertices[3]);

this->frame.addColor(line_color);

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

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

}

if (noise_3 < threshold || x == len) {

this->frame.addVertex(vertices[1]);

this->frame.addVertex(vertices[2]);

this->frame.addColor(line_color);

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

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

}

if (noise_4 < threshold || y == -len) {

this->frame.addVertex(vertices[0]);

this->frame.addVertex(vertices[1]);

this->frame.addColor(line_color);

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

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

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateY(ofGetFrameNum());

ofRotateX(ofGetFrameNum() * 1.5);

this->frame.draw();

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20220916

2022年9月15日

DAY. Draw by openFrameworks

[ Video ]

[ About ]
DAY.

[ 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 mesh;

	ofTrueTypeFont font;
};

#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 mesh;

ofTrueTypeFont font;

};

#include "ofApp.h"

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

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

	ofBackground(255);
	ofSetLineWidth(1.2);
	ofEnableDepthTest();

	this->mesh.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);
	this->font.loadFont("fonts/Kazesawa-Bold.ttf", 120, true, true, true);
}

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

	ofSeedRandom(39);

	vector<float> min_distance_list;
	this->mesh.clear();

	for (int i = 0; i < 1800; i++) {

		auto vertex = glm::vec3(
			ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.001), 0, 1, -200, 200),
			ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.001), 0, 1, -200, 200),
			ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.001), 0, 1, -200, 200));
		this->mesh.addVertex(vertex);
		min_distance_list.push_back(20);
	}

	string word = "DAY";
	auto path_list = font.getStringAsPoints(word, true, false);

	for (auto path : path_list) {

		auto outline = path.getOutline();
		
		for (int outline_index = 0; outline_index < outline.size(); outline_index++) {

			outline[outline_index] = outline[outline_index].getResampledBySpacing(15);
			auto vertices = outline[outline_index].getVertices();

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

				auto location = glm::vec3(vertices[vertices_index].x - this->font.stringWidth(word) * 0.5, vertices[vertices_index].y + this->font.stringHeight(word) * 0.5, 0);
				this->mesh.addVertex(location);
			}
		
		}
	}

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

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

			if (i == k) { continue; }

			auto distance = glm::distance(this->mesh.getVertex(i), this->mesh.getVertex(k));
			if (distance < 20) {

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

				if (distance < min_distance_list[i]) {

					min_distance_list[i] = distance;
				}
			}
		}

		color.setHsb(ofRandom(255), 200, 255);
		this->mesh.addColor(ofColor(color, ofMap(min_distance_list[i], 0, 20, 255, 0)));
	}
}

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

	this->cam.begin();
	ofRotateX(180);
	ofRotateY(45 * sin(ofGetFrameNum() * 0.035));

	this->mesh.draw();

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

		ofSetColor(this->mesh.getColor(i));
		ofDrawSphere(this->mesh.getVertex(i), 1.5);
	}

	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(255);

ofSetLineWidth(1.2);

ofEnableDepthTest();

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

this->font.loadFont("fonts/Kazesawa-Bold.ttf", 120, true, true, true);

}

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

void ofApp::update() {

ofSeedRandom(39);

vector<float> min_distance_list;

this->mesh.clear();

for (int i = 0; i < 1800; i++) {

auto vertex = glm::vec3(

ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.001), 0, 1, -200, 200),

ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.001), 0, 1, -200, 200));

this->mesh.addVertex(vertex);

min_distance_list.push_back(20);

}

string word = "DAY";

auto path_list = font.getStringAsPoints(word, true, false);

for (auto path : path_list) {

auto outline = path.getOutline();

for (int outline_index = 0; outline_index < outline.size(); outline_index++) {

outline[outline_index] = outline[outline_index].getResampledBySpacing(15);

auto vertices = outline[outline_index].getVertices();

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

auto location = glm::vec3(vertices[vertices_index].x - this->font.stringWidth(word) * 0.5, vertices[vertices_index].y + this->font.stringHeight(word) * 0.5, 0);

this->mesh.addVertex(location);

}

ofColor color;

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

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

if (i == k) { continue; }

auto distance = glm::distance(this->mesh.getVertex(i), this->mesh.getVertex(k));

if (distance < 20) {

this->mesh.addIndex(i);

this->mesh.addIndex(k);

if (distance < min_distance_list[i]) {

min_distance_list[i] = distance;

}

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

this->mesh.addColor(ofColor(color, ofMap(min_distance_list[i], 0, 20, 255, 0)));

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateX(180);

ofRotateY(45 * sin(ofGetFrameNum() * 0.035));

this->mesh.draw();

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

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

ofDrawSphere(this->mesh.getVertex(i), 1.5);

}

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/Insta20220915

2022年9月14日2022年9月14日

Cobweb. Draw by openFrameworks

[ Video ]

[ About ]
正方形の中を結ぶ。

[ 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 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 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 mesh;

};

#include "ofApp.h"

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

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

	ofBackground(0);
	ofEnableDepthTest();

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

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

	ofSeedRandom(39);

	vector<float> min_distance_list;
	this->mesh.clear();

	for (int i = 0; i < 2800; i++) {

		auto vertex = glm::vec3(
			ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.001), 0, 1, -300, 300),
			ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.001), 0, 1, -300, 300),
			ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.001), 0, 1, -300, 300));
		this->mesh.addVertex(vertex);
		min_distance_list.push_back(20);
	}

	for (auto& vertex : this->mesh.getVertices()) {

		vertex.x = vertex.x < -150 ? -150 : vertex.x > 150 ? 150 : vertex.x;
		vertex.y = vertex.y < -150 ? -150 : vertex.y > 150 ? 150 : vertex.y;
		vertex.z = vertex.z < -150 ? -150 : vertex.z > 150 ? 150 : vertex.z;
	}


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

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

			if (i == k) { continue; }

			auto distance = glm::distance(this->mesh.getVertex(i), this->mesh.getVertex(k));
			if (distance < 20) {

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

				if (distance < min_distance_list[i]) {

					min_distance_list[i] = distance;
				}
			}
		}

		this->mesh.addColor(ofColor(255, ofMap(min_distance_list[i], 0, 20, 255, 0)));
	}
}

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

	this->cam.begin();

	ofRotateY(ofGetFrameNum());

	this->mesh.draw();

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

		ofSetColor(this->mesh.getColor(i));
		ofDrawSphere(this->mesh.getVertex(i), 1.5);
	}

	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);

ofEnableDepthTest();

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

}

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

void ofApp::update() {

ofSeedRandom(39);

vector<float> min_distance_list;

this->mesh.clear();

for (int i = 0; i < 2800; i++) {

auto vertex = glm::vec3(

ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.001), 0, 1, -300, 300),

ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.001), 0, 1, -300, 300));

this->mesh.addVertex(vertex);

min_distance_list.push_back(20);

}

for (auto& vertex : this->mesh.getVertices()) {

vertex.x = vertex.x < -150 ? -150 : vertex.x > 150 ? 150 : vertex.x;

vertex.y = vertex.y < -150 ? -150 : vertex.y > 150 ? 150 : vertex.y;

vertex.z = vertex.z < -150 ? -150 : vertex.z > 150 ? 150 : vertex.z;

}

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

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

if (i == k) { continue; }

auto distance = glm::distance(this->mesh.getVertex(i), this->mesh.getVertex(k));

if (distance < 20) {

this->mesh.addIndex(i);

this->mesh.addIndex(k);

if (distance < min_distance_list[i]) {

min_distance_list[i] = distance;

}

this->mesh.addColor(ofColor(255, ofMap(min_distance_list[i], 0, 20, 255, 0)));

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateY(ofGetFrameNum());

this->mesh.draw();

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

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

ofDrawSphere(this->mesh.getVertex(i), 1.5);

}

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/Insta20220914

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