ofMesh – ページ 54 – プログラミング de 落描き

2022年7月27日

Flower. Draw by openFrameworks

[ Video ]

[ About ]
花。

[ 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) {};

	ofMesh mesh;
	vector<float> noise_seed_list;
	vector<float> noise_param_list;
	vector<ofColor> color_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 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) {};

ofMesh mesh;

vector<float> noise_seed_list;

vector<float> noise_param_list;

vector<ofColor> color_list;

};

#include "ofApp.h"

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

	ofSetFrameRate(30);
	ofSetWindowTitle("openframeworks");

	ofBackground(0);
	ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);

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

	ofColor color;
	for (int i = 0; i < 20; i++) {

		this->noise_seed_list.push_back(ofRandom(1000));
		this->noise_param_list.push_back(0);

		color.setHsb(ofMap(i, 0, 20, 0, 255), 255, 255);
		this->color_list.push_back(color);
	}
}

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

	this->mesh.clear();

	int span = 28;
	for (int i = 0; i < this->noise_seed_list.size(); i++) {

		int radius = (ofGetFrameNum() * 3 + i * 30) % 600 + 30;

		for (int deg = 0; deg < 360; deg += 3) {

			auto noise_location = glm::vec2(320 * cos(deg * DEG_TO_RAD), 320 * sin(deg * DEG_TO_RAD));
			auto noise_param = ofMap(ofNoise(this->noise_seed_list[i], noise_location.x * 0.005, noise_location.y * 0.005, this->noise_param_list[i]), 0, 1, 0.35, 1);

			this->mesh.addVertex(glm::vec3(radius * noise_param * cos(deg * DEG_TO_RAD), radius * noise_param * sin(deg * DEG_TO_RAD), 0));
			this->mesh.addColor(ofColor(this->color_list[i], 0));
		}

		this->noise_param_list[i] += 0.001;
	}

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

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

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

				auto alpha = distance < span * 0.25 ? 255 : ofMap(distance, span * 0.25, span, 255, 0);

				if (this->mesh.getColor(i).a < alpha) {

					this->mesh.setColor(i, ofColor(this->mesh.getColor(i), alpha));
				}

				if (this->mesh.getColor(k).a < alpha) {

					this->mesh.setColor(k, ofColor(this->mesh.getColor(k), alpha));
				}

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

}

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

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

	this->mesh.drawWireframe();

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

		ofSetColor(this->mesh.getColor(i));
		ofDrawCircle(this->mesh.getVertex(i), 1.85);
	}
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(30);

ofSetWindowTitle("openframeworks");

ofBackground(0);

ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);

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

ofColor color;

for (int i = 0; i < 20; i++) {

this->noise_seed_list.push_back(ofRandom(1000));

this->noise_param_list.push_back(0);

color.setHsb(ofMap(i, 0, 20, 0, 255), 255, 255);

this->color_list.push_back(color);

}

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

void ofApp::update() {

this->mesh.clear();

int span = 28;

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

int radius = (ofGetFrameNum() * 3 + i * 30) % 600 + 30;

for (int deg = 0; deg < 360; deg += 3) {

auto noise_location = glm::vec2(320 * cos(deg * DEG_TO_RAD), 320 * sin(deg * DEG_TO_RAD));

auto noise_param = ofMap(ofNoise(this->noise_seed_list[i], noise_location.x * 0.005, noise_location.y * 0.005, this->noise_param_list[i]), 0, 1, 0.35, 1);

this->mesh.addVertex(glm::vec3(radius * noise_param * cos(deg * DEG_TO_RAD), radius * noise_param * sin(deg * DEG_TO_RAD), 0));

this->mesh.addColor(ofColor(this->color_list[i], 0));

}

this->noise_param_list[i] += 0.001;

}

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

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

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

if (distance < span) {

auto alpha = distance < span * 0.25 ? 255 : ofMap(distance, span * 0.25, span, 255, 0);

if (this->mesh.getColor(i).a < alpha) {

this->mesh.setColor(i, ofColor(this->mesh.getColor(i), alpha));

}

if (this->mesh.getColor(k).a < alpha) {

this->mesh.setColor(k, ofColor(this->mesh.getColor(k), alpha));

}

this->mesh.addIndex(i);

this->mesh.addIndex(k);

}

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

void ofApp::draw() {

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

this->mesh.drawWireframe();

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

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

ofDrawCircle(this->mesh.getVertex(i), 1.85);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20220727

2022年7月26日

Rotationg. Draw by openFrameworks

[ Video ]

[ About ]
横から円をねじったのを見る。

[ 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 setRingToMesh(ofMesh& face_target, ofMesh& frame_target, glm::vec3 location, float radius, float height);

	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) {};

void setRingToMesh(ofMesh& face_target, ofMesh& frame_target, glm::vec3 location, float radius, float height);

ofEasyCam cam;

ofMesh face, frame;

};

#include "ofApp.h"

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

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

	ofBackground(255);
	ofSetLineWidth(1.5);
	ofEnableDepthTest();

	this->frame.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);
}
//--------------------------------------------------------------
void ofApp::update() {

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

	for (int radius = 50; radius <= 270; radius += 5) {

		this->setRingToMesh(this->face, this->frame, glm::vec3(), radius, 60);
	}
}

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

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

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

	ofSetColor(255);
	this->frame.drawWireframe();

	this->cam.end();
}

//--------------------------------------------------------------
void ofApp::setRingToMesh(ofMesh& face_target, ofMesh& frame_target, glm::vec3 location, float radius, float height) {

	int index = face_target.getNumVertices();

	for (int deg = 0; deg < 360; deg += 1) {

		vector<glm::vec3> vertices;
		vertices.push_back(glm::vec3(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD), height * -0.5));
		vertices.push_back(glm::vec3(radius * cos((deg + 1) * DEG_TO_RAD), radius * sin((deg + 1) * DEG_TO_RAD), height * -0.5));
		vertices.push_back(glm::vec3(radius * cos((deg + 1) * DEG_TO_RAD), radius * sin((deg + 1) * DEG_TO_RAD), height * 0.5));
		vertices.push_back(glm::vec3(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD), height * 0.5));

		for (auto& vertex : vertices) {

			auto noise_value = ofNoise(
				(abs)(vertex.x) * 0.0015,
				(abs)(vertex.y) * 0.0015 + ofGetFrameNum() * 0.008);
			float param = 0.5;
			if (noise_value < 0.3) { param = ofMap(noise_value, 0, 0.3, 0, 0.5); }
			if (noise_value > 0.7) { param = ofMap(noise_value, 0.7, 1, 0.5, 1); }

			auto rotation = glm::rotate(glm::mat4(), ofMap(param, 0, 1, -PI * 1.5, PI * 1.5), glm::vec3(0, 1, 0));
			vertex = glm::vec4(vertex, 0) * rotation + glm::vec4(location, 0);
		}

		auto face_index = face_target.getNumVertices();
		face_target.addVertices(vertices);

		face_target.addIndex(face_index + 0); face_target.addIndex(face_index + 1); face_target.addIndex(face_index + 2);
		face_target.addIndex(face_index + 0); face_target.addIndex(face_index + 2); face_target.addIndex(face_index + 3);

		auto frame_index = frame_target.getNumVertices();
		frame_target.addVertices(vertices);

		frame_target.addIndex(frame_index + 0); frame_target.addIndex(frame_index + 1);
		frame_target.addIndex(frame_index + 2); frame_target.addIndex(frame_index + 3);
	}
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openFrameworks");

ofBackground(255);

ofSetLineWidth(1.5);

ofEnableDepthTest();

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

}

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

void ofApp::update() {

this->face.clear();

this->frame.clear();

for (int radius = 50; radius <= 270; radius += 5) {

this->setRingToMesh(this->face, this->frame, glm::vec3(), radius, 60);

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateX(90);

ofSetColor(0);

this->face.draw();

ofSetColor(255);

this->frame.drawWireframe();

this->cam.end();

}

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

void ofApp::setRingToMesh(ofMesh& face_target, ofMesh& frame_target, glm::vec3 location, float radius, float height) {

int index = face_target.getNumVertices();

for (int deg = 0; deg < 360; deg += 1) {

vector<glm::vec3> vertices;

vertices.push_back(glm::vec3(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD), height * -0.5));

vertices.push_back(glm::vec3(radius * cos((deg + 1) * DEG_TO_RAD), radius * sin((deg + 1) * DEG_TO_RAD), height * -0.5));

vertices.push_back(glm::vec3(radius * cos((deg + 1) * DEG_TO_RAD), radius * sin((deg + 1) * DEG_TO_RAD), height * 0.5));

vertices.push_back(glm::vec3(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD), height * 0.5));

for (auto& vertex : vertices) {

auto noise_value = ofNoise(

(abs)(vertex.x) * 0.0015,

(abs)(vertex.y) * 0.0015 + ofGetFrameNum() * 0.008);

float param = 0.5;

if (noise_value < 0.3) { param = ofMap(noise_value, 0, 0.3, 0, 0.5); }

if (noise_value > 0.7) { param = ofMap(noise_value, 0.7, 1, 0.5, 1); }

auto rotation = glm::rotate(glm::mat4(), ofMap(param, 0, 1, -PI * 1.5, PI * 1.5), glm::vec3(0, 1, 0));

vertex = glm::vec4(vertex, 0) * rotation + glm::vec4(location, 0);

}

auto face_index = face_target.getNumVertices();

face_target.addVertices(vertices);

face_target.addIndex(face_index + 0); face_target.addIndex(face_index + 1); face_target.addIndex(face_index + 2);

face_target.addIndex(face_index + 0); face_target.addIndex(face_index + 2); face_target.addIndex(face_index + 3);

auto frame_index = frame_target.getNumVertices();

frame_target.addVertices(vertices);

frame_target.addIndex(frame_index + 0); frame_target.addIndex(frame_index + 1);

frame_target.addIndex(frame_index + 2); frame_target.addIndex(frame_index + 3);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20220726

2022年7月18日2022年7月15日

Random walk points. Draw by openFrameworks

[ Video ]

[ About ]
ランダムウォークの点通しをつなぐ。

[ 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) {};
};

#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) {};

};

#include "ofApp.h"	
//--------------------------------------------------------------
void ofApp::setup() {

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

	ofBackground(0);
	ofSetColor(255);
	ofNoFill();
}

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

	ofSeedRandom(39);
}

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

	ofTranslate(ofGetWindowSize() * 0.5);

	ofMesh location_list;
	location_list.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);
	for (int i = 0; i < 10; i++) {

		auto noise_seed = glm::vec2(ofRandom(1000), ofRandom(1000));
		ofMesh mesh;
		mesh.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);
		for (int k = 0; k < 40; k++) {

			mesh.addVertex(glm::vec3(
				ofMap(ofNoise(noise_seed.x, k * 0.005 + ofGetFrameNum() * 0.005), 0, 1, -350, 350),
				ofMap(ofNoise(noise_seed.y, k * 0.005 + ofGetFrameNum() * 0.005), 0, 1, -350, 350),
				0));

			if (k > 0) {

				mesh.addIndex(k);
				mesh.addIndex(k - 1);
			}

			if (k % 10 == 0) {

				location_list.addVertex(mesh.getVertices().back());
			}
		}

		//mesh.drawWireframe();
	}

	for (int i = 0; i < location_list.getNumVertices(); i++) {

		ofNoFill();
		ofDrawCircle(location_list.getVertex(i), 5);

		for (int k = i + 1; k < location_list.getNumVertices(); k++) {

			auto distance = glm::distance(location_list.getVertex(i), location_list.getVertex(k));
			if (distance < 60) {

				location_list.addIndex(i);
				location_list.addIndex(k);

				ofFill();
				ofDrawCircle(location_list.getVertex(i), 2);
				ofDrawCircle(location_list.getVertex(k), 2);
			}
		}
	}

	location_list.drawWireframe();
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openFrameworks");

ofBackground(0);

ofSetColor(255);

ofNoFill();

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

ofTranslate(ofGetWindowSize() * 0.5);

ofMesh location_list;

location_list.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);

for (int i = 0; i < 10; i++) {

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

ofMesh mesh;

mesh.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);

for (int k = 0; k < 40; k++) {

mesh.addVertex(glm::vec3(

ofMap(ofNoise(noise_seed.x, k * 0.005 + ofGetFrameNum() * 0.005), 0, 1, -350, 350),

ofMap(ofNoise(noise_seed.y, k * 0.005 + ofGetFrameNum() * 0.005), 0, 1, -350, 350),

0));

if (k > 0) {

mesh.addIndex(k);

mesh.addIndex(k - 1);

}

if (k % 10 == 0) {

location_list.addVertex(mesh.getVertices().back());

}

//mesh.drawWireframe();

}

for (int i = 0; i < location_list.getNumVertices(); i++) {

ofNoFill();

ofDrawCircle(location_list.getVertex(i), 5);

for (int k = i + 1; k < location_list.getNumVertices(); k++) {

auto distance = glm::distance(location_list.getVertex(i), location_list.getVertex(k));

if (distance < 60) {

location_list.addIndex(i);

location_list.addIndex(k);

ofFill();

ofDrawCircle(location_list.getVertex(i), 2);

ofDrawCircle(location_list.getVertex(k), 2);

}

location_list.drawWireframe();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20220718

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