2020年12月 – ページ 9 – プログラミング de 落描き

2020年12月7日2020年12月7日

凸凹 Video. Draw by openFrameworks

[ Video ]

[ About ]
凸凹動画。

凸凹 Video.

[ Source ]

#pragma once
#include "ofMain.h"
#include "opencv2/opencv.hpp"

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;

	cv::VideoCapture cap;
	cv::Size cap_size;
	int number_of_frames;
	vector<cv::Mat> frame_list;

	float rect_size;
	vector<cv::Mat> rect_frames;
	vector<unique_ptr<ofImage>> rect_images;
	vector<cv::Rect> cv_rects;
};

#pragma once

#include "ofMain.h"

#include "opencv2/opencv.hpp"

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;

cv::VideoCapture cap;

cv::Size cap_size;

int number_of_frames;

vector<cv::Mat> frame_list;

float rect_size;

vector<cv::Mat> rect_frames;

vector<unique_ptr<ofImage>> rect_images;

vector<cv::Rect> cv_rects;

};

#include "ofApp.h"

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

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

	ofBackground(239);
	ofEnableDepthTest();
	ofDisableArbTex();

	this->cap_size = cv::Size(640, 360);
	this->rect_size = 20;
	for (int x = 0; x < this->cap_size.width; x += this->rect_size) {

		for (int y = 0; y < this->cap_size.height; y += this->rect_size) {

			auto image = make_unique<ofImage>();
			image->allocate(this->rect_size, this->rect_size, OF_IMAGE_COLOR);
			cv::Mat frame = cv::Mat(cv::Size(image->getWidth(), image->getHeight()), CV_MAKETYPE(CV_8UC3, image->getPixels().getNumChannels()), image->getPixels().getData(), 0);
			cv::Rect rect = cv::Rect(x, y, this->rect_size, this->rect_size);

			this->rect_images.push_back(move(image));
			this->cv_rects.push_back(rect);
			this->rect_frames.push_back(frame);
		}
	}

	this->number_of_frames = 0;
	vector<string> file_path_list = { "D:\\MP4\\Pexels Videos 2921.mp4"};

	for (auto& file_path : file_path_list) {

		this->cap.open(file_path);
		int frame_count = this->cap.get(cv::CAP_PROP_FRAME_COUNT);
		for (int i = 0; i < frame_count; i++) {

			cv::Mat src, tmp;
			this->cap >> src;
			if (src.empty()) {

				continue;
			}

			cv::resize(src, tmp, this->cap_size);
			cv::cvtColor(tmp, tmp, cv::COLOR_BGR2RGB);

			this->frame_list.push_back(tmp);
		}

		this->number_of_frames += frame_count;
	}
}

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

	ofSeedRandom(39);
}

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

	this->cam.begin();
	ofTranslate(this->cap_size.width * -0.5, this->cap_size.height * -0.5, 0);

	float noise_seed = ofRandom(1000);
	for (int i = 0; i < this->rect_frames.size(); i++) {

		int frame_index = (int)(ofGetFrameNum() * 0.41666) % this->number_of_frames;
		auto box_depth = ofMap(ofNoise(this->cv_rects[i].x * 0.01, this->cv_rects[i].y * 0.01, ofGetFrameNum() * 0.008), 0, 1, 5, 150);

		cv::Mat tmp_box_image(this->frame_list[frame_index], this->cv_rects[i]);
		tmp_box_image.copyTo(this->rect_frames[i]);

		this->rect_images[i]->update();
		this->rect_images[i]->getTexture().bind();
		ofSetColor(255);
		ofFill();
		ofDrawBox(glm::vec3(this->cv_rects[i].x, this->cap_size.height - this->cv_rects[i].y, box_depth * 0.5), this->rect_size, this->rect_size, box_depth);
		this->rect_images[i]->unbind();

		ofSetColor(239);
		ofNoFill();
		ofDrawBox(glm::vec3(this->cv_rects[i].x, this->cap_size.height - this->cv_rects[i].y, box_depth * 0.5), this->rect_size, this->rect_size, box_depth);

	}

	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);

ofEnableDepthTest();

ofDisableArbTex();

this->cap_size = cv::Size(640, 360);

this->rect_size = 20;

for (int x = 0; x < this->cap_size.width; x += this->rect_size) {

for (int y = 0; y < this->cap_size.height; y += this->rect_size) {

auto image = make_unique<ofImage>();

image->allocate(this->rect_size, this->rect_size, OF_IMAGE_COLOR);

cv::Mat frame = cv::Mat(cv::Size(image->getWidth(), image->getHeight()), CV_MAKETYPE(CV_8UC3, image->getPixels().getNumChannels()), image->getPixels().getData(), 0);

cv::Rect rect = cv::Rect(x, y, this->rect_size, this->rect_size);

this->rect_images.push_back(move(image));

this->cv_rects.push_back(rect);

this->rect_frames.push_back(frame);

}

this->number_of_frames = 0;

vector<string> file_path_list = { "D:\\MP4\\Pexels Videos 2921.mp4"};

for (auto& file_path : file_path_list) {

this->cap.open(file_path);

int frame_count = this->cap.get(cv::CAP_PROP_FRAME_COUNT);

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

cv::Mat src, tmp;

this->cap >> src;

if (src.empty()) {

continue;

}

cv::resize(src, tmp, this->cap_size);

cv::cvtColor(tmp, tmp, cv::COLOR_BGR2RGB);

this->frame_list.push_back(tmp);

}

this->number_of_frames += frame_count;

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

this->cam.begin();

ofTranslate(this->cap_size.width * -0.5, this->cap_size.height * -0.5, 0);

float noise_seed = ofRandom(1000);

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

int frame_index = (int)(ofGetFrameNum() * 0.41666) % this->number_of_frames;

auto box_depth = ofMap(ofNoise(this->cv_rects[i].x * 0.01, this->cv_rects[i].y * 0.01, ofGetFrameNum() * 0.008), 0, 1, 5, 150);

cv::Mat tmp_box_image(this->frame_list[frame_index], this->cv_rects[i]);

tmp_box_image.copyTo(this->rect_frames[i]);

this->rect_images[i]->update();

this->rect_images[i]->getTexture().bind();

ofSetColor(255);

ofFill();

ofDrawBox(glm::vec3(this->cv_rects[i].x, this->cap_size.height - this->cv_rects[i].y, box_depth * 0.5), this->rect_size, this->rect_size, box_depth);

this->rect_images[i]->unbind();

ofSetColor(239);

ofNoFill();

ofDrawBox(glm::vec3(this->cv_rects[i].x, this->cap_size.height - this->cv_rects[i].y, box_depth * 0.5), this->rect_size, this->rect_size, box_depth);

}

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20201207

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2020年12月6日

Heart pounding. Draw by openFrameworks

[ Video ]

[ About ]
ドキドキ。

Heart pounding.

[ 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(float theta);

	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) {};

glm::vec2 make_point(float theta);

ofEasyCam cam;

ofMesh face, frame;

};

#include "ofApp.h"	

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

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

	ofBackground(239);
	ofEnableDepthTest();

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

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

	ofSeedRandom(39);

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

	auto rotate_y = ofGetFrameNum();
	for (int x = -600; x <= 600; x += 600) {

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

			auto noise_seed = ofRandom(1000);
			auto rotation_y = glm::rotate(glm::mat4(), rotate_y * (float)DEG_TO_RAD, glm::vec3(0, 1, 0));
			for (float scale = 3; scale < 15; scale += 2) {

				auto start_index = this->face.getNumVertices();
				auto scale_param = ofMap(ofNoise(noise_seed, scale * 0.05 + ofGetFrameNum() * 0.05), 0, 1, -1.5, 1.5);
				for (int deg = 0; deg < 360; deg += 5) {

					auto tmp_scale = scale + scale_param;

					vector<glm::vec3> vertices;
					vertices.push_back(glm::vec3(x, y, 0) + glm::vec4(this->make_point(deg * DEG_TO_RAD) * tmp_scale, -15, 0) * rotation_y);
					vertices.push_back(glm::vec3(x, y, 0) + glm::vec4(this->make_point(deg * DEG_TO_RAD) * (tmp_scale + 0.5), -15, 0) * rotation_y);
					vertices.push_back(glm::vec3(x, y, 0) + glm::vec4(this->make_point((deg + 5) * DEG_TO_RAD) * (tmp_scale + 0.5), -15, 0) * rotation_y);
					vertices.push_back(glm::vec3(x, y, 0) + glm::vec4(this->make_point((deg + 5) * DEG_TO_RAD) * tmp_scale, -15, 0) * rotation_y);

					vertices.push_back(glm::vec3(x, y, 0) + glm::vec4(this->make_point(deg * DEG_TO_RAD) * tmp_scale, 15, 0) * rotation_y);
					vertices.push_back(glm::vec3(x, y, 0) + glm::vec4(this->make_point(deg * DEG_TO_RAD) * (tmp_scale + 0.5), 15, 0) * rotation_y);
					vertices.push_back(glm::vec3(x, y, 0) + glm::vec4(this->make_point((deg + 5) * DEG_TO_RAD) * (tmp_scale + 0.5), 15, 0) * rotation_y);
					vertices.push_back(glm::vec3(x, y, 0) + glm::vec4(this->make_point((deg + 5) * DEG_TO_RAD) * tmp_scale, 15, 0) * rotation_y);

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

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

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

			rotate_y += 40;
		}
	}
}

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

	this->cam.begin();
	ofRotateX(180);

	ofSetColor(39);
	this->face.draw();

	ofSetColor(239);
	this->frame.drawWireframe();

	this->cam.end();
}

//--------------------------------------------------------------
// Reference by https://twitter.com/shiffman/status/1095764239665512453
glm::vec2 ofApp::make_point(float theta) {

	float x = 16 * (pow(sin(theta), 3));
	float y = 13 * cos(theta) - 5 * cos(2 * theta) - 2 * cos(3 * theta) - cos(4 * theta);
	return glm::vec2(x, -y);
}

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

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

}

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

void ofApp::update() {

ofSeedRandom(39);

this->face.clear();

this->frame.clear();

auto rotate_y = ofGetFrameNum();

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

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

auto noise_seed = ofRandom(1000);

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

for (float scale = 3; scale < 15; scale += 2) {

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

auto scale_param = ofMap(ofNoise(noise_seed, scale * 0.05 + ofGetFrameNum() * 0.05), 0, 1, -1.5, 1.5);

for (int deg = 0; deg < 360; deg += 5) {

auto tmp_scale = scale + scale_param;

vector<glm::vec3> vertices;

vertices.push_back(glm::vec3(x, y, 0) + glm::vec4(this->make_point(deg * DEG_TO_RAD) * tmp_scale, -15, 0) * rotation_y);

vertices.push_back(glm::vec3(x, y, 0) + glm::vec4(this->make_point(deg * DEG_TO_RAD) * (tmp_scale + 0.5), -15, 0) * rotation_y);

vertices.push_back(glm::vec3(x, y, 0) + glm::vec4(this->make_point((deg + 5) * DEG_TO_RAD) * (tmp_scale + 0.5), -15, 0) * rotation_y);

vertices.push_back(glm::vec3(x, y, 0) + glm::vec4(this->make_point((deg + 5) * DEG_TO_RAD) * tmp_scale, -15, 0) * rotation_y);

vertices.push_back(glm::vec3(x, y, 0) + glm::vec4(this->make_point(deg * DEG_TO_RAD) * tmp_scale, 15, 0) * rotation_y);

vertices.push_back(glm::vec3(x, y, 0) + glm::vec4(this->make_point(deg * DEG_TO_RAD) * (tmp_scale + 0.5), 15, 0) * rotation_y);

vertices.push_back(glm::vec3(x, y, 0) + glm::vec4(this->make_point((deg + 5) * DEG_TO_RAD) * (tmp_scale + 0.5), 15, 0) * rotation_y);

vertices.push_back(glm::vec3(x, y, 0) + glm::vec4(this->make_point((deg + 5) * DEG_TO_RAD) * tmp_scale, 15, 0) * rotation_y);

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

this->face.addVertices(vertices);

this->frame.addVertices(vertices);

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

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

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

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

this->face.addIndex(index + 0); this->face.addIndex(index + 4); this->face.addIndex(index + 1);

this->face.addIndex(index + 4); this->face.addIndex(index + 5); this->face.addIndex(index + 1);

this->face.addIndex(index + 1); this->face.addIndex(index + 5); this->face.addIndex(index + 6);

this->face.addIndex(index + 6); this->face.addIndex(index + 2); this->face.addIndex(index + 1);

this->face.addIndex(index + 2); this->face.addIndex(index + 6); this->face.addIndex(index + 7);

this->face.addIndex(index + 7); this->face.addIndex(index + 3); this->face.addIndex(index + 2);

this->face.addIndex(index + 3); this->face.addIndex(index + 7); this->face.addIndex(index + 4);

this->face.addIndex(index + 4); this->face.addIndex(index + 0); this->face.addIndex(index + 3);

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

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

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

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

}

rotate_y += 40;

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateX(180);

ofSetColor(39);

this->face.draw();

ofSetColor(239);

this->frame.drawWireframe();

this->cam.end();

}

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

// Reference by https://twitter.com/shiffman/status/1095764239665512453

glm::vec2 ofApp::make_point(float theta) {

float x = 16 * (pow(sin(theta), 3));

float y = 13 * cos(theta) - 5 * cos(2 * theta) - 2 * cos(3 * theta) - cos(4 * theta);

return glm::vec2(x, -y);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20201206

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2020年12月5日

Immature Torus. Draw by openFrameworks

[ Video ]

[ About ]
未熟なトーラス。

Immature 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 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;
	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) {};

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

ofEasyCam cam;

ofMesh face, frame;

};

#include "ofApp.h"	

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

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

	ofBackground(239);
	ofEnableDepthTest();

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

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

	ofSeedRandom(39);

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

	float R = 300;
	int v_span = 8;
	int u_span = 10;

	for (float r = 30; r <= 120; r += 5) {

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

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

				auto noise_value = ofNoise(glm::vec4(this->make_point(R, 90, u + u_span * 0.5, v) * 0.005, r * 0.03 - ofGetFrameNum() * 0.03));

				if (noise_value > 0.65) {

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

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

					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);
				}
			}
		}
	}
}

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

	this->cam.begin();
	ofRotateX(ofGetFrameNum() * 0.37);
	ofRotateY(ofGetFrameNum() * 0.72);


	ofSetColor(39);
	this->face.draw();

	ofSetColor(239);
	this->frame.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());
}

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openFrameworks");

ofBackground(239);

ofEnableDepthTest();

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

}

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

void ofApp::update() {

ofSeedRandom(39);

this->face.clear();

this->frame.clear();

float R = 300;

int v_span = 8;

int u_span = 10;

for (float r = 30; r <= 120; r += 5) {

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

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

auto noise_value = ofNoise(glm::vec4(this->make_point(R, 90, u + u_span * 0.5, v) * 0.005, r * 0.03 - ofGetFrameNum() * 0.03));

if (noise_value > 0.65) {

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();

this->face.addVertices(vertices);

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

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

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);

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateX(ofGetFrameNum() * 0.37);

ofRotateY(ofGetFrameNum() * 0.72);

ofSetColor(39);

this->face.draw();

ofSetColor(239);

this->frame.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/Insta20201205

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