2022年4月 – ページ 4 – プログラミング de 落描き

2022年4月21日

Planet waving. Draw by openFrameworks

[ Video ]

[ About ]
黒い球体から発生する輪。

A ring arising from a black sphere.

[ 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;

	vector<float> radius_list;
	vector<float> speed_list;
};

#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;

vector<float> radius_list;

vector<float> speed_list;

};

#include "ofApp.h"

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

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

	ofBackground(0);
	ofSetCircleResolution(60);
	ofEnableDepthTest();
}

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

	for (int i = this->radius_list.size() - 1; i >= 0; i--) {

		this->radius_list[i] += this->speed_list[i];

		if (this->radius_list[i] > 450) {

			this->radius_list.erase(this->radius_list.begin() + i);
			this->speed_list.erase(this->speed_list.begin() + i);
		}
	}
}

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

	this->cam.begin();

	if (ofRandom(100) < 25) {

		this->radius_list.push_back(100);
		this->speed_list.push_back(ofRandom(0.5, 1.5));
	}

	ofFill();
	ofSetColor(0);
	ofDrawSphere(glm::vec3(), 100);

	for (auto& radius : this->radius_list) {

		auto alpha = radius < 300 ? 255 : ofMap(radius, 300, 450, 255, 0);

		ofNoFill();
		ofSetColor(255, alpha);
		ofDrawCircle(glm::vec3(), radius);
	}

	this->cam.end();
}

//--------------------------------------------------------------
int main() {

	ofSetupOpenGL(720, 720, OF_WINDOW);
	ofRunApp(new ofApp());
}

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openframeworks");

ofBackground(0);

ofSetCircleResolution(60);

ofEnableDepthTest();

}

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

void ofApp::update() {

for (int i = this->radius_list.size() - 1; i >= 0; i--) {

this->radius_list[i] += this->speed_list[i];

if (this->radius_list[i] > 450) {

this->radius_list.erase(this->radius_list.begin() + i);

this->speed_list.erase(this->speed_list.begin() + i);

}

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

void ofApp::draw() {

this->cam.begin();

if (ofRandom(100) < 25) {

this->radius_list.push_back(100);

this->speed_list.push_back(ofRandom(0.5, 1.5));

}

ofFill();

ofSetColor(0);

ofDrawSphere(glm::vec3(), 100);

for (auto& radius : this->radius_list) {

auto alpha = radius < 300 ? 255 : ofMap(radius, 300, 450, 255, 0);

ofNoFill();

ofSetColor(255, alpha);

ofDrawCircle(glm::vec3(), radius);

}

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20220421

[ほしいものリスト]
Amazon

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2022年4月20日

Video fragmentation. Draw by openFrameworks

[ Video ]

[ About ]
動画の断片化。

Video fragmentation.

[ 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;

	ofImage image;
	cv::Mat frame;
};

#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;

ofImage image;

cv::Mat frame;

};

#include "ofApp.h"

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

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

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

	this->cap.open("D:\\MP4\\MOV_1030.mp4");
	this->cap_size = cv::Size(1280, 720);

	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);
}

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

	ofSeedRandom(39);

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

		this->cap.set(cv::CAP_PROP_POS_FRAMES, 0);
		return;
	}

	cv::cvtColor(src, src, cv::COLOR_BGR2RGB);
	cv::resize(src, this->frame, this->cap_size);
	cv::flip(this->frame, this->frame, 0);

	this->image.update();
}

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

	this->cam.begin();
	ofRotateY(ofGetFrameNum());
	ofTranslate(-640, -360);

	int span = 40;

	vector<ofMesh> mesh_list;
	for (int x = 0; x < 1280; x += span) {

		for (int y = 0; y < 720; y += span) {

			ofMesh mesh;

			mesh.addVertex(glm::vec3(x, y, 0));
			mesh.addVertex(glm::vec3(x + span, y, 0));
			mesh.addVertex(glm::vec3(x + span, y + span, 0));
			mesh.addVertex(glm::vec3(x, y + span, 0));

			mesh.addTexCoord(glm::vec3(x, y, 0));
			mesh.addTexCoord(glm::vec3(x + span, y, 0));
			mesh.addTexCoord(glm::vec3(x + span, y + span, 0));
			mesh.addTexCoord(glm::vec3(x, y + span, 0));

			mesh.addIndex(0); mesh.addIndex(1); mesh.addIndex(2);
			mesh.addIndex(0); mesh.addIndex(2); mesh.addIndex(3);

			mesh_list.push_back(mesh);
		}
	}

	for (auto& mesh : mesh_list) {

		auto rotate = glm::vec3(ofRandom(360), ofRandom(360), ofRandom(360));
		auto speed = glm::vec3(ofRandom(5, 10), ofRandom(5, 10), ofRandom(5, 10));

		auto center = glm::vec3(mesh.getVertex(0).x + span * 0.5, mesh.getVertex(0).y + span * 0.5, 0);
		auto tmp_center = center;

		mesh.setVertex(0, mesh.getVertex(0) - center);
		mesh.setVertex(1, mesh.getVertex(1) - center);
		mesh.setVertex(2, mesh.getVertex(2) - center);
		mesh.setVertex(3, mesh.getVertex(3) - center);

		auto noise_value = ofNoise(glm::vec4(center * 0.001, ofGetFrameNum() * 0.005));
		if (noise_value < 0.48) {

			tmp_center += glm::vec3(0, 0, -250);
			rotate = glm::vec3();
		}
		else if (noise_value < 0.52) {

			tmp_center += glm::vec3(0, 0, ofMap(noise_value, 0.48, 0.52, -250, 250));
			rotate.x += ofGetFrameNum() * speed.x;
			rotate.y += ofGetFrameNum() * speed.y;
			rotate.z += ofGetFrameNum() * speed.z;
		}
		else {

			tmp_center += glm::vec3(0, 0, 250);
			rotate = glm::vec3();
		}

		ofPushMatrix();
		ofTranslate(tmp_center);
		ofRotateZ(rotate.z);
		ofRotateY(rotate.y);
		ofRotateX(rotate.x);

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

		ofMesh line;
		line.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);
		if (noise_value > 0.48 && noise_value < 0.52) {

			line.addVertex(mesh.getVertex(0));
			line.addVertex(mesh.getVertex(1));
			line.addVertex(mesh.getVertex(2));
			line.addVertex(mesh.getVertex(3));

			line.addIndex(0); line.addIndex(1);
			line.addIndex(1); line.addIndex(2);
			line.addIndex(2); line.addIndex(3);
			line.addIndex(3); line.addIndex(0);
		}
		else {

			auto top_noise_value = ofNoise(glm::vec4((center + glm::vec3(0, span, 0)) * 0.001, ofGetFrameNum() * 0.005));
			if ((top_noise_value > 0.48 && top_noise_value < 0.52 || center.y >= 720 - span * 0.5) ) {

				line.addVertex(mesh.getVertex(2));
				line.addVertex(mesh.getVertex(3));

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

			auto bottom_noise_value = ofNoise(glm::vec4((center - glm::vec3(0, span, 0)) * 0.001, ofGetFrameNum() * 0.005));
			if (bottom_noise_value > 0.48 && bottom_noise_value < 0.52 || center.y <= span * 0.5) {

				line.addVertex(mesh.getVertex(0));
				line.addVertex(mesh.getVertex(1));

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

			auto right_noise_value = ofNoise(glm::vec4((center + glm::vec3(span, 0, 0)) * 0.001, ofGetFrameNum() * 0.005));
			if (right_noise_value > 0.48 && right_noise_value < 0.52 || center.x >= 1280 - span * 0.5) {

				line.addVertex(mesh.getVertex(1));
				line.addVertex(mesh.getVertex(2));

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

			auto left_noise_value = ofNoise(glm::vec4((center -	glm::vec3(span, 0, 0)) * 0.001, ofGetFrameNum() * 0.005));
			if (left_noise_value > 0.48 && left_noise_value < 0.52 || center.x <= span * 0.5) {

				line.addVertex(mesh.getVertex(3));
				line.addVertex(mesh.getVertex(0));

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

		line.drawWireframe();
		

		ofPopMatrix();
	}

	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(2);

ofEnableDepthTest();

this->cap.open("D:\\MP4\\MOV_1030.mp4");

this->cap_size = cv::Size(1280, 720);

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);

}

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

void ofApp::update() {

ofSeedRandom(39);

cv::Mat src;

this->cap >> src;

if (src.empty()) {

this->cap.set(cv::CAP_PROP_POS_FRAMES, 0);

return;

}

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

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

cv::flip(this->frame, this->frame, 0);

this->image.update();

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateY(ofGetFrameNum());

ofTranslate(-640, -360);

int span = 40;

vector<ofMesh> mesh_list;

for (int x = 0; x < 1280; x += span) {

for (int y = 0; y < 720; y += span) {

ofMesh mesh;

mesh.addVertex(glm::vec3(x, y, 0));

mesh.addVertex(glm::vec3(x + span, y, 0));

mesh.addVertex(glm::vec3(x + span, y + span, 0));

mesh.addVertex(glm::vec3(x, y + span, 0));

mesh.addTexCoord(glm::vec3(x, y, 0));

mesh.addTexCoord(glm::vec3(x + span, y, 0));

mesh.addTexCoord(glm::vec3(x + span, y + span, 0));

mesh.addTexCoord(glm::vec3(x, y + span, 0));

mesh.addIndex(0); mesh.addIndex(1); mesh.addIndex(2);

mesh.addIndex(0); mesh.addIndex(2); mesh.addIndex(3);

mesh_list.push_back(mesh);

}

for (auto& mesh : mesh_list) {

auto rotate = glm::vec3(ofRandom(360), ofRandom(360), ofRandom(360));

auto speed = glm::vec3(ofRandom(5, 10), ofRandom(5, 10), ofRandom(5, 10));

auto center = glm::vec3(mesh.getVertex(0).x + span * 0.5, mesh.getVertex(0).y + span * 0.5, 0);

auto tmp_center = center;

mesh.setVertex(0, mesh.getVertex(0) - center);

mesh.setVertex(1, mesh.getVertex(1) - center);

mesh.setVertex(2, mesh.getVertex(2) - center);

mesh.setVertex(3, mesh.getVertex(3) - center);

auto noise_value = ofNoise(glm::vec4(center * 0.001, ofGetFrameNum() * 0.005));

if (noise_value < 0.48) {

tmp_center += glm::vec3(0, 0, -250);

rotate = glm::vec3();

}

else if (noise_value < 0.52) {

tmp_center += glm::vec3(0, 0, ofMap(noise_value, 0.48, 0.52, -250, 250));

rotate.x += ofGetFrameNum() * speed.x;

rotate.y += ofGetFrameNum() * speed.y;

rotate.z += ofGetFrameNum() * speed.z;

}

else {

tmp_center += glm::vec3(0, 0, 250);

rotate = glm::vec3();

}

ofPushMatrix();

ofTranslate(tmp_center);

ofRotateZ(rotate.z);

ofRotateY(rotate.y);

ofRotateX(rotate.x);

ofSetColor(255);

this->image.bind();

mesh.draw();

this->image.unbind();

ofMesh line;

line.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);

if (noise_value > 0.48 && noise_value < 0.52) {

line.addVertex(mesh.getVertex(0));

line.addVertex(mesh.getVertex(1));

line.addVertex(mesh.getVertex(2));

line.addVertex(mesh.getVertex(3));

line.addIndex(0); line.addIndex(1);

line.addIndex(1); line.addIndex(2);

line.addIndex(2); line.addIndex(3);

line.addIndex(3); line.addIndex(0);

}

else {

auto top_noise_value = ofNoise(glm::vec4((center + glm::vec3(0, span, 0)) * 0.001, ofGetFrameNum() * 0.005));

if ((top_noise_value > 0.48 && top_noise_value < 0.52 || center.y >= 720 - span * 0.5) ) {

line.addVertex(mesh.getVertex(2));

line.addVertex(mesh.getVertex(3));

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

}

auto bottom_noise_value = ofNoise(glm::vec4((center - glm::vec3(0, span, 0)) * 0.001, ofGetFrameNum() * 0.005));

if (bottom_noise_value > 0.48 && bottom_noise_value < 0.52 || center.y <= span * 0.5) {

line.addVertex(mesh.getVertex(0));

line.addVertex(mesh.getVertex(1));

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

}

auto right_noise_value = ofNoise(glm::vec4((center + glm::vec3(span, 0, 0)) * 0.001, ofGetFrameNum() * 0.005));

if (right_noise_value > 0.48 && right_noise_value < 0.52 || center.x >= 1280 - span * 0.5) {

line.addVertex(mesh.getVertex(1));

line.addVertex(mesh.getVertex(2));

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

}

auto left_noise_value = ofNoise(glm::vec4((center - glm::vec3(span, 0, 0)) * 0.001, ofGetFrameNum() * 0.005));

if (left_noise_value > 0.48 && left_noise_value < 0.52 || center.x <= span * 0.5) {

line.addVertex(mesh.getVertex(3));

line.addVertex(mesh.getVertex(0));

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

}

line.drawWireframe();

ofPopMatrix();

}

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20220420

[ほしいものリスト]
Amazon

[ Sponsor Link ]

2022年4月19日2022年4月19日

Chipped plate. Draw by openFrameworks

[ Video ]

[ About ]
少し崩壊する感じ。

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

	ofBackground(255);
	ofEnableDepthTest();
	ofSetLineWidth(3);

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

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

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

	float span = 10;
	float threshold = 0.45;
	float noise_param = 0.01;

	for (float x = -200; x <= 200; x += span) {

		for (float y = -200; y <= 200; y += span) {

			for (float z = -200; z <= 0; z += span) {

				auto noise_value = ofNoise(x * noise_param, y * noise_param, z * noise_param * 0.05 + ofGetFrameNum() * 0.01);

				if (noise_value < threshold) { continue; }

				auto noise_value_1 = ofNoise((x - span) * noise_param, y * noise_param, z * noise_param * 0.05 + ofGetFrameNum() * 0.01);
				auto noise_value_2 = ofNoise(x * noise_param, (y + span) * noise_param, z * noise_param * 0.05 + ofGetFrameNum() * 0.01);
				auto noise_value_3 = ofNoise((x + span) * noise_param, y * noise_param, z * noise_param * 0.05 + ofGetFrameNum() * 0.01);
				auto noise_value_4 = ofNoise(x * noise_param, (y - span) * noise_param, z * noise_param * 0.05 + ofGetFrameNum() * 0.01);


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

				vertices.push_back(glm::vec3(x - span * 0.5, y - span * 0.5, z));
				vertices.push_back(glm::vec3(x - span * 0.5, y + span * 0.5, z));
				vertices.push_back(glm::vec3(x + span * 0.5, y + span * 0.5, z));
				vertices.push_back(glm::vec3(x + span * 0.5, y - span * 0.5, z));

				this->face.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);

				if (noise_value_1 < threshold || x == -200) {

					this->line.addVertex(vertices[0]); this->line.addVertex(vertices[1]);
					this->line.addIndex(this->line.getNumVertices() - 1); this->line.addIndex(this->line.getNumVertices() - 2);
				}

				if (noise_value_2 < threshold || y == 200) {

					this->line.addVertex(vertices[1]); this->line.addVertex(vertices[2]);
					this->line.addIndex(this->line.getNumVertices() - 1); this->line.addIndex(this->line.getNumVertices() - 2);
				}

				if (noise_value_3 < threshold || x == 200) {

					this->line.addVertex(vertices[2]); this->line.addVertex(vertices[3]);
					this->line.addIndex(this->line.getNumVertices() - 1); this->line.addIndex(this->line.getNumVertices() - 2);
				}

				if (noise_value_4 < threshold || y == -200) {

					this->line.addVertex(vertices[0]); this->line.addVertex(vertices[3]);
					this->line.addIndex(this->line.getNumVertices() - 1); this->line.addIndex(this->line.getNumVertices() - 2);
				}
			}
		}
	}
}

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

	this->cam.begin();

	ofSetColor(255);
	this->face.draw();

	ofSetColor(0);
	this->line.draw();

	this->cam.end();
}

//--------------------------------------------------------------
int main() {

	ofSetupOpenGL(720, 720, OF_WINDOW);
	ofRunApp(new ofApp());
}

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101

102

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(30);

ofSetWindowTitle("openFrameworks");

ofBackground(255);

ofEnableDepthTest();

ofSetLineWidth(3);

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

}

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

void ofApp::update() {

this->face.clear();

this->line.clear();

float span = 10;

float threshold = 0.45;

float noise_param = 0.01;

for (float x = -200; x <= 200; x += span) {

for (float y = -200; y <= 200; y += span) {

for (float z = -200; z <= 0; z += span) {

auto noise_value = ofNoise(x * noise_param, y * noise_param, z * noise_param * 0.05 + ofGetFrameNum() * 0.01);

if (noise_value < threshold) { continue; }

auto noise_value_1 = ofNoise((x - span) * noise_param, y * noise_param, z * noise_param * 0.05 + ofGetFrameNum() * 0.01);

auto noise_value_2 = ofNoise(x * noise_param, (y + span) * noise_param, z * noise_param * 0.05 + ofGetFrameNum() * 0.01);

auto noise_value_3 = ofNoise((x + span) * noise_param, y * noise_param, z * noise_param * 0.05 + ofGetFrameNum() * 0.01);

auto noise_value_4 = ofNoise(x * noise_param, (y - span) * noise_param, z * noise_param * 0.05 + ofGetFrameNum() * 0.01);

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

vector<glm::vec3> vertices;

vertices.push_back(glm::vec3(x - span * 0.5, y - span * 0.5, z));

vertices.push_back(glm::vec3(x - span * 0.5, y + span * 0.5, z));

vertices.push_back(glm::vec3(x + span * 0.5, y + span * 0.5, z));

vertices.push_back(glm::vec3(x + span * 0.5, y - span * 0.5, z));

this->face.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);

if (noise_value_1 < threshold || x == -200) {

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

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

}

if (noise_value_2 < threshold || y == 200) {

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

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

}

if (noise_value_3 < threshold || x == 200) {

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

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

}

if (noise_value_4 < threshold || y == -200) {

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

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

}

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

void ofApp::draw() {

this->cam.begin();

ofSetColor(255);

this->face.draw();

ofSetColor(0);

this->line.draw();

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20220419

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