openframeworks – ページ 316 – プログラミング de 落描き

2021年1月11日2021年1月11日

Changing color ribbon art. Draw by openFrameworks

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Changing color ribbon art.

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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, 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) {};

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();

	frame.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);

	for (int k = 0; k < 3; k++) {

		auto param = glm::vec3(15, 0, 0);
		auto noise_seed = glm::vec3(ofRandom(1000), ofRandom(1000), ofRandom(1000));
		auto start_index = this->face.getNumVertices();

		ofColor color;
		for (int i = 0; i < 150; i++) {

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

			auto location = glm::vec3(
				ofMap(ofNoise(noise_seed.x, (i + ofGetFrameNum()) * 0.01), 0, 1, -500, 500),
				ofMap(ofNoise(noise_seed.y, (i + ofGetFrameNum()) * 0.01), 0, 1, -500, 500),
				ofMap(ofNoise(noise_seed.z, (i + ofGetFrameNum()) * 0.01), 0, 1, -500, 500));

			this->face.addVertex(location + param);
			this->face.addVertex(location - param);

			auto alpha = 255;
			color.setHsb((ofGetFrameNum() + i + k * 85) % 255, 180, 255, alpha);

			this->face.addColor(color);
			this->face.addColor(color);

			this->frame.addVertex(location + param);
			this->frame.addVertex(location - param);

			this->frame.addColor(ofColor(39, alpha));
			this->frame.addColor(ofColor(39, alpha));

			if (i > 0) {

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

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

		this->frame.addIndex(start_index + 0); this->frame.addIndex(start_index + 1);
		this->frame.addIndex(frame.getNumVertices() - 1); this->frame.addIndex(frame.getNumVertices() - 2);
	}
}

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

	auto target = this->face.getVertex(this->face.getNumVertices() - 1);
	auto camera_location = this->face.getVertex(0) + glm::vec3(0, 0, 1200);

	this->cam.setPosition(camera_location);
	this->cam.setTarget(target);
	this->cam.lookAt(target);

	this->cam.begin();

	this->face.drawFaces();

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

	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();

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

}

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

void ofApp::update() {

ofSeedRandom(39);

this->face.clear();

this->frame.clear();

frame.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);

for (int k = 0; k < 3; k++) {

auto param = glm::vec3(15, 0, 0);

auto noise_seed = glm::vec3(ofRandom(1000), ofRandom(1000), ofRandom(1000));

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

ofColor color;

for (int i = 0; i < 150; i++) {

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

auto location = glm::vec3(

ofMap(ofNoise(noise_seed.x, (i + ofGetFrameNum()) * 0.01), 0, 1, -500, 500),

ofMap(ofNoise(noise_seed.y, (i + ofGetFrameNum()) * 0.01), 0, 1, -500, 500),

ofMap(ofNoise(noise_seed.z, (i + ofGetFrameNum()) * 0.01), 0, 1, -500, 500));

this->face.addVertex(location + param);

this->face.addVertex(location - param);

auto alpha = 255;

color.setHsb((ofGetFrameNum() + i + k * 85) % 255, 180, 255, alpha);

this->face.addColor(color);

this->frame.addVertex(location + param);

this->frame.addVertex(location - param);

this->frame.addColor(ofColor(39, alpha));

if (i > 0) {

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

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

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

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

}

this->frame.addIndex(start_index + 0); this->frame.addIndex(start_index + 1);

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

}

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

void ofApp::draw() {

auto target = this->face.getVertex(this->face.getNumVertices() - 1);

auto camera_location = this->face.getVertex(0) + glm::vec3(0, 0, 1200);

this->cam.setPosition(camera_location);

this->cam.setTarget(target);

this->cam.lookAt(target);

this->cam.begin();

this->face.drawFaces();

ofSetColor(239);

this->frame.drawWireframe();

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
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2021年1月10日2021年1月10日

Connection visualize. Draw by openFramewoks

[ Video ]

[ About ]
Connection visualize.

[ 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);

	vector<ofMesh> line_list;
	ofMesh near_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) {};

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

vector<ofMesh> line_list;

ofMesh near_line;

};

#include "ofApp.h"

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

	ofSetWindowTitle("openFrameworks");
	ofSetFrameRate(60);
	
	ofBackground(239);
	ofSetColor(39);
	ofNoFill();

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

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

	ofSeedRandom(39);
	this->line_list.clear();
	this->near_line.clear();

	int len = 500;
	
	{
		ofMesh line;
		line.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);
		for (int param = 0; param < 100; param += 1) {

			line.addVertex(glm::vec3(this->make_point(len, param), 0));

			if (param > 0) {

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

	for (int i = 0; i < 5; i++) {

		ofMesh line;
		line.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);
		auto noise_seed = ofRandom(1000);
		for (int x = -len * 0.5; x <= len * 0.5; x += 5) {

			auto y = ofMap(ofNoise(noise_seed, x * 0.0035, ofGetFrameNum() * 0.0035), 0, 1, -len * 0.5, len * 0.5);
			line.addVertex(glm::vec3(x, y, 0));

			if (x > len * -0.5) {

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

		this->line_list.push_back(line);
	}

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

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

			for (int m = 0; m < this->line_list[i].getNumVertices(); m++) {

				bool m_flag = false;
				int m_index = m;
				for (int p = 0; p < this->line_list[k].getNumVertices(); p++) {

					if (glm::distance(this->line_list[i].getVertex(m), this->line_list[k].getVertex(p)) < 50) {

						if (m_flag == false) {

							m_index = this->near_line.getNumVertices();
							this->near_line.addVertex(this->line_list[i].getVertex(m));
							m_flag = true;
						}

						this->near_line.addVertex(this->line_list[k].getVertex(p));

						this->near_line.addIndex(m_index);
						this->near_line.addIndex(this->near_line.getNumVertices() - 1);
					}
				}
			}
		}
	}
}

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

	ofTranslate(ofGetWidth() * 0.5, ofGetHeight() * 0.5);
	
	this->near_line.draw();
	ofFill();
	for (auto& vertex : this->near_line.getVertices()) {

		ofDrawCircle(vertex, 3);
	}
	ofNoFill();
	ofDrawRectangle(glm::vec2(-250, -250), 500, 500);
}

//--------------------------------------------------------------
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() {

ofSetWindowTitle("openFrameworks");

ofSetFrameRate(60);

ofBackground(239);

ofSetColor(39);

ofNoFill();

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

}

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

void ofApp::update() {

ofSeedRandom(39);

this->line_list.clear();

this->near_line.clear();

int len = 500;

{

ofMesh line;

line.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);

for (int param = 0; param < 100; param += 1) {

line.addVertex(glm::vec3(this->make_point(len, param), 0));

if (param > 0) {

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

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

}

this->line_list.push_back(line);

}

for (int i = 0; i < 5; i++) {

ofMesh line;

line.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);

auto noise_seed = ofRandom(1000);

for (int x = -len * 0.5; x <= len * 0.5; x += 5) {

auto y = ofMap(ofNoise(noise_seed, x * 0.0035, ofGetFrameNum() * 0.0035), 0, 1, -len * 0.5, len * 0.5);

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

if (x > len * -0.5) {

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

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

}

this->line_list.push_back(line);

}

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

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

for (int m = 0; m < this->line_list[i].getNumVertices(); m++) {

bool m_flag = false;

int m_index = m;

for (int p = 0; p < this->line_list[k].getNumVertices(); p++) {

if (glm::distance(this->line_list[i].getVertex(m), this->line_list[k].getVertex(p)) < 50) {

if (m_flag == false) {

m_index = this->near_line.getNumVertices();

this->near_line.addVertex(this->line_list[i].getVertex(m));

m_flag = true;

}

this->near_line.addVertex(this->line_list[k].getVertex(p));

this->near_line.addIndex(m_index);

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

}

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

void ofApp::draw() {

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

this->near_line.draw();

ofFill();

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

ofDrawCircle(vertex, 3);

}

ofNoFill();

ofDrawRectangle(glm::vec2(-250, -250), 500, 500);

}

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

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 ]
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2021年1月9日2021年1月9日

Draw characters. Draw by openFrameworks

[ Video ]

[ About ]
アルファベットを描く。

Draw characters.

[ 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) {};

	ofTrueTypeFont font;
	int font_size;
	vector<char> charactor_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) {};

ofTrueTypeFont font;

int font_size;

vector<char> charactor_list;

};

#include "ofApp.h"

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

	ofSetWindowTitle("openFrameworks");
	ofSetFrameRate(60);
	
	ofBackground(239);
	ofSetColor(39);
	ofNoFill();
	ofSetLineWidth(2);

	this->font_size = 55;
	this->font.loadFont("fonts/msgothic.ttc", this->font_size, true, true, true);

	this->charactor_list = { 'A', 'B', 'C', 'D', 'E', 'F',
								'G', 'H', 'I', 'J', 'K', 'L',
								'M', 'N', 'O', 'P', 'Q', 'R',
								'S', 'T', 'U', 'V', 'W', 'X',
								'Y', 'Z', '!' };
}

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

	ofSeedRandom(39);
}

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

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

	int sample_count = 180;
	for (int x = this->font_size * -5; x <= this->font_size * 5; x += this->font_size * 1.25)
	{
		for (int y = this->font_size * -5; y <= this->font_size * 5; y += this->font_size * 1.25) {

			ofPath path = this->font.getCharacterAsPoints(this->charactor_list[(int)ofRandom(this->charactor_list.size())], true, false);
			vector<ofPolyline> outline = path.getOutline();
			auto frame_param = (int)ofRandom(sample_count * 2) + ofGetFrameNum() * (int)ofRandom(1, 3);

			for (int outline_index = 0; outline_index < outline.size(); outline_index++) {

				outline[outline_index] = outline[outline_index].getResampledByCount(sample_count);
				vector<glm::vec3> vertices = outline[outline_index].getVertices();

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

					glm::vec3 vertex = glm::vec3(x - this->font_size * 0.5, y + this->font_size * 0.5, 0) + glm::vec3(vertices[vertices_index].x, vertices[vertices_index].y, vertices[vertices_index].z);

					if (frame_param % (sample_count * 2) < sample_count) {

						if (vertices_index < frame_param % sample_count) {

							ofVertex(vertex);
						}
					}
					else {

						if (vertices_index > frame_param % sample_count) {

							ofVertex(vertex);
						}
					}

					if (vertices_index == frame_param % sample_count) {

						ofFill();
						ofDrawCircle(vertex, 3);
						ofNoFill();
					}

				}
				ofEndShape();
			}
		}
	}
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetWindowTitle("openFrameworks");

ofSetFrameRate(60);

ofBackground(239);

ofSetColor(39);

ofNoFill();

ofSetLineWidth(2);

this->font_size = 55;

this->font.loadFont("fonts/msgothic.ttc", this->font_size, true, true, true);

this->charactor_list = { 'A', 'B', 'C', 'D', 'E', 'F',

'G', 'H', 'I', 'J', 'K', 'L',

'M', 'N', 'O', 'P', 'Q', 'R',

'S', 'T', 'U', 'V', 'W', 'X',

'Y', 'Z', '!' };

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

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

int sample_count = 180;

for (int x = this->font_size * -5; x <= this->font_size * 5; x += this->font_size * 1.25)

{

for (int y = this->font_size * -5; y <= this->font_size * 5; y += this->font_size * 1.25) {

ofPath path = this->font.getCharacterAsPoints(this->charactor_list[(int)ofRandom(this->charactor_list.size())], true, false);

vector<ofPolyline> outline = path.getOutline();

auto frame_param = (int)ofRandom(sample_count * 2) + ofGetFrameNum() * (int)ofRandom(1, 3);

for (int outline_index = 0; outline_index < outline.size(); outline_index++) {

outline[outline_index] = outline[outline_index].getResampledByCount(sample_count);

vector<glm::vec3> vertices = outline[outline_index].getVertices();

ofBeginShape();

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

glm::vec3 vertex = glm::vec3(x - this->font_size * 0.5, y + this->font_size * 0.5, 0) + glm::vec3(vertices[vertices_index].x, vertices[vertices_index].y, vertices[vertices_index].z);

if (frame_param % (sample_count * 2) < sample_count) {

if (vertices_index < frame_param % sample_count) {

ofVertex(vertex);

}

else {

if (vertices_index > frame_param % sample_count) {

ofVertex(vertex);

}

if (vertices_index == frame_param % sample_count) {

ofFill();

ofDrawCircle(vertex, 3);

ofNoFill();

}

ofEndShape();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
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