2021年6月 – ページ 8 – プログラミング de 落描き

2021年6月9日2021年6月9日

frame_count = map(x, 0, width, 0, number_of_frame). Draw by openFrameworks

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frame_count = map(x, 0, width, 0, number_of_frame).

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#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) {};

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

	ofImage image;
	cv::Mat frame;
	ofMesh mesh;
};

#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) {};

cv::VideoCapture cap;

cv::Size cap_size;

int number_of_frames;

vector<cv::Mat> frame_list;

ofImage image;

cv::Mat frame;

ofMesh mesh;

};

#include "ofApp.h"

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

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

	ofBackground(239);

	ofSetRectMode(ofRectMode::OF_RECTMODE_CENTER);

	this->cap.open("D:\\MP4\\production ID_3761468.mp4");
	this->cap_size = cv::Size(96, 54);

	this->image.allocate(this->cap_size.width, this->cap_size.height, OF_IMAGE_COLOR);
	this->frame = cv::Mat(cv::Size(this->image.getWidth(), this->image.getHeight()), CV_MAKETYPE(CV_8UC3, this->image.getPixels().getNumChannels()), this->image.getPixels().getData(), 0);

	this->number_of_frames = this->cap.get(cv::CAP_PROP_FRAME_COUNT);
	for (int i = 0; i < this->number_of_frames; 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->mesh.addVertex(glm::vec3(this->cap_size.width * -0.5, this->cap_size.height * -0.5, 0));
	this->mesh.addVertex(glm::vec3(this->cap_size.width * 0.5, this->cap_size.height * -0.5, 0));
	this->mesh.addVertex(glm::vec3(this->cap_size.width * 0.5, this->cap_size.height * 0.5, 0));
	this->mesh.addVertex(glm::vec3(this->cap_size.width * -0.5, this->cap_size.height * 0.5, 0));

	this->mesh.addTexCoord(glm::vec3(0, 0, 0));
	this->mesh.addTexCoord(glm::vec3(this->cap_size.width, 0, 0));
	this->mesh.addTexCoord(glm::vec3(this->cap_size.width, this->cap_size.height, 0));
	this->mesh.addTexCoord(glm::vec3(0, this->cap_size.height, 0));

	this->mesh.addIndex(0); mesh.addIndex(1); mesh.addIndex(2);
	this->mesh.addIndex(0); mesh.addIndex(2); mesh.addIndex(3);
}

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

	ofSeedRandom(39);
}

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

	for (int i = 0; i < 13; i++) {

		int y = i * 54 + 27 + 9;

		float noise_value = ofNoise(y * 0.0015 + ofGetFrameNum() * 0.015);

		int frame_count = ofMap(noise_value, 0, 1, -300, this->number_of_frames + 300);

		if (frame_count < 0) { frame_count = 0; }
		if (frame_count > this->number_of_frames) { frame_count = this->number_of_frames - 1; }

		int x = ofMap(frame_count, 0, this->number_of_frames, 100, ofGetWidth() - 100);


		y = 720 - y;

		ofPushMatrix();
		ofTranslate(x, y);

		int seq_frame_index = frame_count % this->number_of_frames;
		this->frame_list[seq_frame_index].copyTo(this->frame);
		this->image.update();

		ofSetColor(255);
		ofFill();
		this->image.bind();
		this->mesh.draw();
		this->image.unbind();

		ofNoFill();
		ofSetColor(39);
		ofDrawRectangle(0, 0, 96, 54);

		ofPopMatrix();
	}
}

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

ofSetRectMode(ofRectMode::OF_RECTMODE_CENTER);

this->cap.open("D:\\MP4\\production ID_3761468.mp4");

this->cap_size = cv::Size(96, 54);

this->image.allocate(this->cap_size.width, this->cap_size.height, OF_IMAGE_COLOR);

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

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

for (int i = 0; i < this->number_of_frames; 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->mesh.addVertex(glm::vec3(this->cap_size.width * -0.5, this->cap_size.height * -0.5, 0));

this->mesh.addVertex(glm::vec3(this->cap_size.width * 0.5, this->cap_size.height * -0.5, 0));

this->mesh.addVertex(glm::vec3(this->cap_size.width * 0.5, this->cap_size.height * 0.5, 0));

this->mesh.addVertex(glm::vec3(this->cap_size.width * -0.5, this->cap_size.height * 0.5, 0));

this->mesh.addTexCoord(glm::vec3(0, 0, 0));

this->mesh.addTexCoord(glm::vec3(this->cap_size.width, 0, 0));

this->mesh.addTexCoord(glm::vec3(this->cap_size.width, this->cap_size.height, 0));

this->mesh.addTexCoord(glm::vec3(0, this->cap_size.height, 0));

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

this->mesh.addIndex(0); mesh.addIndex(2); mesh.addIndex(3);

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

for (int i = 0; i < 13; i++) {

int y = i * 54 + 27 + 9;

float noise_value = ofNoise(y * 0.0015 + ofGetFrameNum() * 0.015);

int frame_count = ofMap(noise_value, 0, 1, -300, this->number_of_frames + 300);

if (frame_count < 0) { frame_count = 0; }

if (frame_count > this->number_of_frames) { frame_count = this->number_of_frames - 1; }

int x = ofMap(frame_count, 0, this->number_of_frames, 100, ofGetWidth() - 100);

y = 720 - y;

ofPushMatrix();

ofTranslate(x, y);

int seq_frame_index = frame_count % this->number_of_frames;

this->frame_list[seq_frame_index].copyTo(this->frame);

this->image.update();

ofSetColor(255);

ofFill();

this->image.bind();

this->mesh.draw();

this->image.unbind();

ofNoFill();

ofSetColor(39);

ofDrawRectangle(0, 0, 96, 54);

ofPopMatrix();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

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2021年6月8日2021年6月8日

Triple tornado. Draw by openFrameworks

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Triple tornado.

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#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 face, line;
};

#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 face, line;

};

#include "ofApp.h"

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

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

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

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

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

	ofSeedRandom(39);

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

	auto radius = 300;
	auto deg_width = 9;
	auto deg_span = 5;
	auto height_span = 10;
	auto max_height = 1000;

	ofColor face_color, line_color;

	for (radius = 100; radius <= 300; radius += 100) {

		if (radius % 200 == 0) {

			face_color = ofColor(39);
			line_color = ofColor(239);
		}
		else {

			face_color = ofColor(239);
			line_color = ofColor(39);
		}

		auto frame_step = ofMap(radius, 100, 300, 0.005, 0.025);
		auto threshold = ofMap(radius, 100, 300, 0.6, 0.35);

		for (auto deg_start = 0; deg_start < 360; deg_start += deg_width + 1) {

			auto deg = deg_start;

			for (auto height = 0; height < max_height; height += height_span) {

				auto prev_noise_value = ofNoise(radius * cos(deg_start * DEG_TO_RAD) * 0.005, radius * sin(deg_start * DEG_TO_RAD) * 0.005, (height - height_span) * 0.002 + ofGetFrameNum() * frame_step);
				auto noise_value = ofNoise(radius * cos(deg_start * DEG_TO_RAD) * 0.005, radius * sin(deg_start * DEG_TO_RAD) * 0.005, height * 0.002 + ofGetFrameNum() * frame_step);
				auto next_noise_value = ofNoise(radius * cos(deg_start * DEG_TO_RAD) * 0.005, radius * sin(deg_start * DEG_TO_RAD) * 0.005, (height + height_span) * 0.002 + ofGetFrameNum() * frame_step);

				if (noise_value < threshold) {

					this->face.addVertex(glm::vec3(radius * cos((deg)* DEG_TO_RAD), height, radius * sin((deg)* DEG_TO_RAD)));
					this->face.addVertex(glm::vec3(radius * cos((deg + deg_width) * DEG_TO_RAD), height, radius * sin((deg + deg_width) * DEG_TO_RAD)));
					this->face.addVertex(glm::vec3(radius * cos((deg + deg_span + deg_width) * DEG_TO_RAD), height + height_span, radius * sin((deg + deg_span + deg_width) * DEG_TO_RAD)));
					this->face.addVertex(glm::vec3(radius * cos((deg + deg_span) * DEG_TO_RAD), height + height_span, radius * sin((deg + deg_span) * DEG_TO_RAD)));

					this->line.addVertex(glm::vec3(radius * cos((deg)* DEG_TO_RAD), height, radius * sin((deg)* DEG_TO_RAD)));
					this->line.addVertex(glm::vec3(radius * cos((deg + deg_width) * DEG_TO_RAD), height, radius * sin((deg + deg_width) * DEG_TO_RAD)));
					this->line.addVertex(glm::vec3(radius * cos((deg + deg_span + deg_width) * DEG_TO_RAD), height + height_span, radius * sin((deg + deg_span + deg_width) * DEG_TO_RAD)));
					this->line.addVertex(glm::vec3(radius * cos((deg + deg_span) * DEG_TO_RAD), height + height_span, radius * sin((deg + deg_span) * DEG_TO_RAD)));

					for (int i = 0; i < 4; i++) {

						this->face.addColor(face_color);
						this->line.addColor(line_color);
					}

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

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

					if (height >= max_height - height_span || next_noise_value > threshold) {

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

					if (height < height_span || prev_noise_value > threshold) {

						this->line.addIndex(this->line.getNumVertices() - 3); this->line.addIndex(this->line.getNumVertices() - 4);
					}
				}

				deg += deg_span;
			}
		}
	}
}

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

	this->cam.begin();

	ofRotateX(180);
	ofTranslate(0, -500, 0);

	this->face.drawFaces();
	this->line.drawWireframe();

	this->cam.end();
}

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

ofSetLineWidth(2);

ofEnableDepthTest();

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

}

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

void ofApp::update() {

ofSeedRandom(39);

this->face.clear();

this->line.clear();

auto radius = 300;

auto deg_width = 9;

auto deg_span = 5;

auto height_span = 10;

auto max_height = 1000;

ofColor face_color, line_color;

for (radius = 100; radius <= 300; radius += 100) {

if (radius % 200 == 0) {

face_color = ofColor(39);

line_color = ofColor(239);

}

else {

face_color = ofColor(239);

line_color = ofColor(39);

}

auto frame_step = ofMap(radius, 100, 300, 0.005, 0.025);

auto threshold = ofMap(radius, 100, 300, 0.6, 0.35);

for (auto deg_start = 0; deg_start < 360; deg_start += deg_width + 1) {

auto deg = deg_start;

for (auto height = 0; height < max_height; height += height_span) {

auto prev_noise_value = ofNoise(radius * cos(deg_start * DEG_TO_RAD) * 0.005, radius * sin(deg_start * DEG_TO_RAD) * 0.005, (height - height_span) * 0.002 + ofGetFrameNum() * frame_step);

auto noise_value = ofNoise(radius * cos(deg_start * DEG_TO_RAD) * 0.005, radius * sin(deg_start * DEG_TO_RAD) * 0.005, height * 0.002 + ofGetFrameNum() * frame_step);

auto next_noise_value = ofNoise(radius * cos(deg_start * DEG_TO_RAD) * 0.005, radius * sin(deg_start * DEG_TO_RAD) * 0.005, (height + height_span) * 0.002 + ofGetFrameNum() * frame_step);

if (noise_value < threshold) {

this->face.addVertex(glm::vec3(radius * cos((deg)* DEG_TO_RAD), height, radius * sin((deg)* DEG_TO_RAD)));

this->face.addVertex(glm::vec3(radius * cos((deg + deg_width) * DEG_TO_RAD), height, radius * sin((deg + deg_width) * DEG_TO_RAD)));

this->face.addVertex(glm::vec3(radius * cos((deg + deg_span + deg_width) * DEG_TO_RAD), height + height_span, radius * sin((deg + deg_span + deg_width) * DEG_TO_RAD)));

this->face.addVertex(glm::vec3(radius * cos((deg + deg_span) * DEG_TO_RAD), height + height_span, radius * sin((deg + deg_span) * DEG_TO_RAD)));

this->line.addVertex(glm::vec3(radius * cos((deg)* DEG_TO_RAD), height, radius * sin((deg)* DEG_TO_RAD)));

this->line.addVertex(glm::vec3(radius * cos((deg + deg_width) * DEG_TO_RAD), height, radius * sin((deg + deg_width) * DEG_TO_RAD)));

this->line.addVertex(glm::vec3(radius * cos((deg + deg_span + deg_width) * DEG_TO_RAD), height + height_span, radius * sin((deg + deg_span + deg_width) * DEG_TO_RAD)));

this->line.addVertex(glm::vec3(radius * cos((deg + deg_span) * DEG_TO_RAD), height + height_span, radius * sin((deg + deg_span) * DEG_TO_RAD)));

for (int i = 0; i < 4; i++) {

this->face.addColor(face_color);

this->line.addColor(line_color);

}

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

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

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

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

if (height >= max_height - height_span || next_noise_value > threshold) {

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

}

if (height < height_span || prev_noise_value > threshold) {

this->line.addIndex(this->line.getNumVertices() - 3); this->line.addIndex(this->line.getNumVertices() - 4);

}

deg += deg_span;

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateX(180);

ofTranslate(0, -500, 0);

this->face.drawFaces();

this->line.drawWireframe();

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

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2021年6月7日2021年6月7日

Tornado. Draw by openFrameworks

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Tornado.

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#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 face, line;
};

#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 face, line;

};

#include "ofApp.h"

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

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

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

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

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

	ofSeedRandom(39);

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

	auto radius = 300;
	auto deg_width = 9;
	auto deg_span = 5;
	auto height_span = 10;
	auto max_height = 1000;
	for (auto deg_start = 0; deg_start < 360; deg_start += deg_width + 1) {

		auto deg = deg_start;

		ofColor face_color, line_color;
		face_color.setHsb(ofMap(deg_start, 0, 360, 0, 255), 255, 255);;

		for (auto height = 0; height < max_height; height += height_span) {

			auto prev_noise_value  = ofNoise(radius * cos(deg_start * DEG_TO_RAD) * 0.005, radius * sin(deg_start * DEG_TO_RAD) * 0.005, (height - height_span) * 0.002 + ofGetFrameNum() * 0.02);
			auto noise_value = ofNoise(radius * cos(deg_start * DEG_TO_RAD) * 0.005, radius * sin(deg_start * DEG_TO_RAD) * 0.005, height * 0.002 + ofGetFrameNum() * 0.02);
			auto next_noise_value = ofNoise(radius * cos(deg_start * DEG_TO_RAD) * 0.005, radius * sin(deg_start * DEG_TO_RAD) * 0.005, (height + height_span) * 0.002 + ofGetFrameNum() * 0.02);

			if (noise_value < 0.5) {

				this->face.addVertex(glm::vec3(radius * cos((deg)* DEG_TO_RAD), height, radius * sin((deg)* DEG_TO_RAD)));
				this->face.addVertex(glm::vec3(radius * cos((deg + deg_width) * DEG_TO_RAD), height, radius * sin((deg + deg_width) * DEG_TO_RAD)));
				this->face.addVertex(glm::vec3(radius * cos((deg + deg_span + deg_width) * DEG_TO_RAD), height + height_span, radius * sin((deg + deg_span + deg_width) * DEG_TO_RAD)));
				this->face.addVertex(glm::vec3(radius * cos((deg + deg_span) * DEG_TO_RAD), height + height_span, radius * sin((deg + deg_span) * DEG_TO_RAD)));

				this->line.addVertex(glm::vec3(radius * cos((deg)* DEG_TO_RAD), height, radius * sin((deg)* DEG_TO_RAD)));
				this->line.addVertex(glm::vec3(radius * cos((deg + deg_width) * DEG_TO_RAD), height, radius * sin((deg + deg_width) * DEG_TO_RAD)));
				this->line.addVertex(glm::vec3(radius * cos((deg + deg_span + deg_width) * DEG_TO_RAD), height + height_span, radius * sin((deg + deg_span + deg_width) * DEG_TO_RAD)));
				this->line.addVertex(glm::vec3(radius * cos((deg + deg_span) * DEG_TO_RAD), height + height_span, radius * sin((deg + deg_span) * DEG_TO_RAD)));

				this->face.addColor(ofColor(0));
				this->face.addColor(ofColor(0));
				this->face.addColor(ofColor(0));
				this->face.addColor(ofColor(0));

				this->line.addColor(face_color);
				this->line.addColor(face_color);
				this->line.addColor(face_color);
				this->line.addColor(face_color);

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

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

				if (height >= max_height - height_span || next_noise_value > 0.5) {

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

				if (height < height_span || prev_noise_value > 0.5) {

					this->line.addIndex(this->line.getNumVertices() - 3); this->line.addIndex(this->line.getNumVertices() - 4);
				}
			}

			deg += deg_span;
		}
	}
}

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

	this->cam.begin();
	ofRotateX(180);
	ofTranslate(0, -500, 0);

	this->face.drawFaces();
	this->line.drawWireframe();

	this->cam.end();
}

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

ofEnableDepthTest();

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

}

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

void ofApp::update() {

ofSeedRandom(39);

this->face.clear();

this->line.clear();

auto radius = 300;

auto deg_width = 9;

auto deg_span = 5;

auto height_span = 10;

auto max_height = 1000;

for (auto deg_start = 0; deg_start < 360; deg_start += deg_width + 1) {

auto deg = deg_start;

ofColor face_color, line_color;

face_color.setHsb(ofMap(deg_start, 0, 360, 0, 255), 255, 255);;

for (auto height = 0; height < max_height; height += height_span) {

auto prev_noise_value = ofNoise(radius * cos(deg_start * DEG_TO_RAD) * 0.005, radius * sin(deg_start * DEG_TO_RAD) * 0.005, (height - height_span) * 0.002 + ofGetFrameNum() * 0.02);

auto noise_value = ofNoise(radius * cos(deg_start * DEG_TO_RAD) * 0.005, radius * sin(deg_start * DEG_TO_RAD) * 0.005, height * 0.002 + ofGetFrameNum() * 0.02);

auto next_noise_value = ofNoise(radius * cos(deg_start * DEG_TO_RAD) * 0.005, radius * sin(deg_start * DEG_TO_RAD) * 0.005, (height + height_span) * 0.002 + ofGetFrameNum() * 0.02);

if (noise_value < 0.5) {