openFrameworks – ページ 468 – プログラミング de 落描き

2021年4月20日2021年4月20日

Barrier. Draw by openFrameworks

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[ About ]
Barrier.

[ Source ]

#pragma once
#include "ofMain.h"

class ofApp : public ofBaseApp {

public:
	void setup();
	void update();
	void draw();

	void keyPressed(int key) {};
	void keyReleased(int key) {};
	void mouseMoved(int x, int y) {};
	void mouseDragged(int x, int y, int button) {};
	void mousePressed(int x, int y, int button) {};
	void mouseReleased(int x, int y, int button) {};
	void windowResized(int w, int h) {};
	void dragEvent(ofDragInfo dragInfo) {};
	void gotMessage(ofMessage msg) {};

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

	ofEasyCam cam;

	ofMesh face, line, vertices;
};

#pragma once

#include "ofMain.h"

class ofApp : public ofBaseApp {

public:

void setup();

void update();

void draw();

void keyPressed(int key) {};

void keyReleased(int key) {};

void mouseMoved(int x, int y) {};

void mouseDragged(int x, int y, int button) {};

void mousePressed(int x, int y, int button) {};

void mouseReleased(int x, int y, int button) {};

void windowResized(int w, int h) {};

void dragEvent(ofDragInfo dragInfo) {};

void gotMessage(ofMessage msg) {};

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

ofEasyCam cam;

ofMesh face, line, vertices;

};

#include "ofApp.h"

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

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

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

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

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

	ofSeedRandom(39);

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

	int len = 300;
	int width = 30;
	for (int y = -300; y <= 300; y += width){

		int start_param = ofRandom(1000) + ofGetFrameNum() * ofRandom(0.5, 1);
		int end_param = start_param + 35;

		for (int param = start_param; param <= end_param; param++) {

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

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

			if (param > start_param) {

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

			if (param % 25 == 0) {

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

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

	vector<ofColor> base_color_list;
	ofColor color;
	vector<int> hex_list = { 0xef476f, 0xffd166, 0x06d6a0, 0x118ab2, 0x073b4c };
	for (auto hex : hex_list) {

		color.setHex(hex);
		base_color_list.push_back(color);
	}

	int color_index = 0;
	for (int i = 0; i < 300; i++) {

		this->vertices.addVertex(glm::vec3(
			ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.005), 0, 1, -150, 150),
			ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.005), 0, 1, -150, 150),
			ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.005), 0, 1, -300, 300)
		));

		this->vertices.addColor(base_color_list[color_index]);
		color_index = (color_index + 1) % base_color_list.size();
	}

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

		for (int k = i + 1; k < this->vertices.getNumVertices(); k++) {

			if (glm::distance(this->vertices.getVertex(i), this->vertices.getVertex(k)) < 50) {

				this->vertices.addIndex(i);
				this->vertices.addIndex(k);
			}
		}
	}
}

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

	this->cam.begin();
	ofRotateX(90);

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

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

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

		ofSetColor(this->vertices.getColor(i));
		ofDrawSphere(this->vertices.getVertex(i), 5);
	}

	this->vertices.drawWireframe();

	this->cam.end();
}

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

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

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

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

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

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

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

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

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#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openframeworks");

ofBackground(239);

ofSetLineWidth(2);

ofEnableDepthTest();

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

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

}

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

void ofApp::update() {

ofSeedRandom(39);

this->face.clear();

this->line.clear();

this->vertices.clear();

int len = 300;

int width = 30;

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

int start_param = ofRandom(1000) + ofGetFrameNum() * ofRandom(0.5, 1);

int end_param = start_param + 35;

for (int param = start_param; param <= end_param; param++) {

vector<glm::vec3> vertices;

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

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

this->face.addVertices(vertices);

this->line.addVertices(vertices);

if (param > start_param) {

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

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() - 3);

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

}

if (param % 25 == 0) {

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

}

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

}

vector<ofColor> base_color_list;

ofColor color;

vector<int> hex_list = { 0xef476f, 0xffd166, 0x06d6a0, 0x118ab2, 0x073b4c };

for (auto hex : hex_list) {

color.setHex(hex);

base_color_list.push_back(color);

}

int color_index = 0;

for (int i = 0; i < 300; i++) {

this->vertices.addVertex(glm::vec3(

ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.005), 0, 1, -150, 150),

ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.005), 0, 1, -300, 300)

));

this->vertices.addColor(base_color_list[color_index]);

color_index = (color_index + 1) % base_color_list.size();

}

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

for (int k = i + 1; k < this->vertices.getNumVertices(); k++) {

if (glm::distance(this->vertices.getVertex(i), this->vertices.getVertex(k)) < 50) {

this->vertices.addIndex(i);

this->vertices.addIndex(k);

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateX(90);

ofSetColor(39);

this->face.draw();

ofSetColor(239);

this->line.drawWireframe();

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

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

ofDrawSphere(this->vertices.getVertex(i), 5);

}

this->vertices.drawWireframe();

this->cam.end();

}

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

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

param = param % 100;

if (param < 25) {

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

}

else if (param < 50) {

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

}

else if (param < 75) {

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

}

else {

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

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20210420

2021年4月19日2021年4月19日

Connection. Draw by openFrameworks

[ Video ]

[ About ]
Connection.

[ 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 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) {};

ofEasyCam cam;

ofMesh mesh;

};

#include "ofApp.h"

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

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

	ofBackground(239);
	ofSetColor(39);
	ofSetLineWidth(1.2);
	ofSetRectMode(ofRectMode::OF_RECTMODE_CENTER);
	
	this->mesh.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);
}

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

	this->mesh.clear();

	int len = 20;
	auto threshold = len * sqrt(2);

	for (int base_x = -220; base_x <= 220; base_x += 220) {

		for (int base_y = -220; base_y <= 220; base_y += 220) {

			vector<glm::vec3> vertices;
			for (int x = -100; x <= 100; x += len) {

				for (int y = -100; y <= 100; y += len) {

					auto noise_value = ofNoise((base_x + x) * 0.008, (base_y + y) * 0.008, ofGetFrameNum() * 0.005);

					if (noise_value > 0.55) {

						vertices.push_back(glm::vec3(x + base_x, base_y + y, 0));
					}
				}
			}

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

				int index = -1;
				for (int k = i + 1; k < vertices.size(); k++) {

					if (glm::distance(vertices[i], vertices[k]) <= threshold) {

						if (index < 0) {

							this->mesh.addVertex(vertices[i]);
							index = this->mesh.getNumVertices() - 1;
						}
						this->mesh.addVertex(vertices[k]);

						this->mesh.addIndex(index);
						this->mesh.addIndex(this->mesh.getNumVertices() - 1);
					}
				}
			}
		}
	}
}

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

	ofTranslate(ofGetWindowSize() * 0.5);

	ofNoFill();
	for (int base_x = -220; base_x <= 220; base_x += 220) {

		for (int base_y = -220; base_y <= 220; base_y += 220) {
	
			ofDrawRectangle(base_x, base_y, 200, 200);
		}
	}

	this->mesh.drawWireframe();

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

		ofDrawCircle(vertex, 3);
	}
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openframeworks");

ofBackground(239);

ofSetColor(39);

ofSetLineWidth(1.2);

ofSetRectMode(ofRectMode::OF_RECTMODE_CENTER);

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

}

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

void ofApp::update() {

this->mesh.clear();

int len = 20;

auto threshold = len * sqrt(2);

for (int base_x = -220; base_x <= 220; base_x += 220) {

for (int base_y = -220; base_y <= 220; base_y += 220) {

vector<glm::vec3> vertices;

for (int x = -100; x <= 100; x += len) {

for (int y = -100; y <= 100; y += len) {

auto noise_value = ofNoise((base_x + x) * 0.008, (base_y + y) * 0.008, ofGetFrameNum() * 0.005);

if (noise_value > 0.55) {

vertices.push_back(glm::vec3(x + base_x, base_y + y, 0));

}

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

int index = -1;

for (int k = i + 1; k < vertices.size(); k++) {

if (glm::distance(vertices[i], vertices[k]) <= threshold) {

if (index < 0) {

this->mesh.addVertex(vertices[i]);

index = this->mesh.getNumVertices() - 1;

}

this->mesh.addVertex(vertices[k]);

this->mesh.addIndex(index);

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

}

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

void ofApp::draw() {

ofTranslate(ofGetWindowSize() * 0.5);

ofNoFill();

for (int base_x = -220; base_x <= 220; base_x += 220) {

for (int base_y = -220; base_y <= 220; base_y += 220) {

ofDrawRectangle(base_x, base_y, 200, 200);

}

this->mesh.drawWireframe();

ofFill();

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

ofDrawCircle(vertex, 3);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20210419

2021年4月18日

Arrow train. Draw by openFrameworks

[ Video ]

[ About ]
Arrow train.

[ 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) {};

	void draw_arrow(glm::vec2 location, glm::vec2 next_location, float size, ofColor color);
};

#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) {};

void draw_arrow(glm::vec2 location, glm::vec2 next_location, float size, ofColor color);

};

#include "ofApp.h"

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

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

	ofBackground(239);
	ofSetColor(39);
	ofSetLineWidth(2);
}

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

	ofSeedRandom(39);
}

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

	ofTranslate(ofGetWidth() * 0.5, ofGetHeight() * 0.5);

	for (int i = 0; i < 1; i++) {

		auto noise_seed = glm::vec2(ofRandom(1000), ofRandom(1000));
		for (int k = 0; k < 30; k++) {

			auto location = glm::vec2(ofMap(ofNoise(noise_seed.x, ofGetFrameNum() * 0.008 + k * 0.08), 0, 1, -300, 300), ofMap(ofNoise(noise_seed.y, ofGetFrameNum() * 0.008 + k * 0.08), 0, 1, -300, 300));
			auto next = glm::vec2(ofMap(ofNoise(noise_seed.x, (ofGetFrameNum() + 1) * 0.008 + k * 0.08), 0, 1, -300, 300), ofMap(ofNoise(noise_seed.y, (ofGetFrameNum() + 1) * 0.008 + k * 0.08), 0, 1, -300, 300));

			ofColor color = k < 15 ? ofColor(ofMap(k, 0, 15, 239, 39)) : ofColor(39);
			this->draw_arrow(location, next, 30, color);
		}
	}
}

//--------------------------------------------------------------
void ofApp::draw_arrow(glm::vec2 location, glm::vec2 next_location, float size, ofColor color) {

	auto angle = std::atan2(next_location.y - location.y, next_location.x - location.x);

	ofSetColor(color);
	ofFill();
	ofBeginShape();
	ofVertex(location + glm::vec2(size * cos(angle), size * sin(angle)));
	ofVertex(location + glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)));
	ofVertex(location + glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)));
	ofEndShape();

	ofBeginShape();
	ofVertex(location + glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.25);
	ofVertex(location + glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.25 - glm::vec2(size * cos(angle), size * sin(angle)) * 0.5);
	ofVertex(location + glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.25 - glm::vec2(size * cos(angle), size * sin(angle)) * 0.5);
	ofVertex(location + glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.25);
	ofEndShape();

	ofSetColor(239);
	ofNoFill();
	ofBeginShape();
	ofVertex(location + glm::vec2(size * cos(angle), size * sin(angle)));
	ofVertex(location + glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)));
	ofVertex(location + glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)));
	ofEndShape();

	ofBeginShape();
	ofVertex(location + glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.25);
	ofVertex(location + glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.25 - glm::vec2(size * cos(angle), size * sin(angle)) * 0.5);
	ofVertex(location + glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.25 - glm::vec2(size * cos(angle), size * sin(angle)) * 0.5);
	ofVertex(location + glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.25);
	ofEndShape();
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openframeworks");

ofBackground(239);

ofSetColor(39);

ofSetLineWidth(2);

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

ofTranslate(ofGetWidth() * 0.5, ofGetHeight() * 0.5);

for (int i = 0; i < 1; i++) {

auto noise_seed = glm::vec2(ofRandom(1000), ofRandom(1000));

for (int k = 0; k < 30; k++) {

auto location = glm::vec2(ofMap(ofNoise(noise_seed.x, ofGetFrameNum() * 0.008 + k * 0.08), 0, 1, -300, 300), ofMap(ofNoise(noise_seed.y, ofGetFrameNum() * 0.008 + k * 0.08), 0, 1, -300, 300));

auto next = glm::vec2(ofMap(ofNoise(noise_seed.x, (ofGetFrameNum() + 1) * 0.008 + k * 0.08), 0, 1, -300, 300), ofMap(ofNoise(noise_seed.y, (ofGetFrameNum() + 1) * 0.008 + k * 0.08), 0, 1, -300, 300));

ofColor color = k < 15 ? ofColor(ofMap(k, 0, 15, 239, 39)) : ofColor(39);

this->draw_arrow(location, next, 30, color);

}

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

void ofApp::draw_arrow(glm::vec2 location, glm::vec2 next_location, float size, ofColor color) {

auto angle = std::atan2(next_location.y - location.y, next_location.x - location.x);

ofSetColor(color);

ofFill();

ofBeginShape();

ofVertex(location + glm::vec2(size * cos(angle), size * sin(angle)));

ofVertex(location + glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)));

ofVertex(location + glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)));

ofEndShape();

ofBeginShape();

ofVertex(location + glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.25);

ofVertex(location + glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.25 - glm::vec2(size * cos(angle), size * sin(angle)) * 0.5);

ofVertex(location + glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.25 - glm::vec2(size * cos(angle), size * sin(angle)) * 0.5);

ofVertex(location + glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.25);

ofEndShape();

ofSetColor(239);

ofNoFill();

ofBeginShape();

ofVertex(location + glm::vec2(size * cos(angle), size * sin(angle)));

ofVertex(location + glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)));

ofVertex(location + glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)));

ofEndShape();

ofBeginShape();

ofVertex(location + glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.25);

ofVertex(location + glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.25 - glm::vec2(size * cos(angle), size * sin(angle)) * 0.5);

ofVertex(location + glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.25 - glm::vec2(size * cos(angle), size * sin(angle)) * 0.5);

ofVertex(location + glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.25);

ofEndShape();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20210418

2025年2月
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