プログラミング de 落描き – ページ 480 – クリエイティブ・コーディングによる生成物とソース

2021年8月1日

Noise walk starting from a circle. Draw by openFrameworks

[ Video ]

[ About ]
出発地点が同じランダムウォーク。

Random walk with the same starting point.

[ 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) {};

	float radius;

	vector<glm::vec2> base_location_list;
	vector<vector<glm::vec3>> log_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) {};

float radius;

vector<glm::vec2> base_location_list;

vector<vector<glm::vec3>> log_list;

};

#include "ofApp.h"	

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

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

	ofBackground(239);
	ofNoFill();

	this->radius = 180;
	for (int deg = 0; deg < 360; deg += 1) {

		auto location = glm::vec2(this->radius * cos(deg * DEG_TO_RAD), this->radius * sin(deg * DEG_TO_RAD));
		this->base_location_list.push_back(location);
	}
}

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

	this->log_list.clear();

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

		vector<glm::vec3> log;
		log.push_back(glm::vec3(this->base_location_list[i], 0));
		this->log_list.push_back(log);
	}

	int step = 2;
	for (int i = 0; i < this->log_list.size(); i++) {

		while (this->log_list[i].size() < 120) {

			auto deg = ofMap(ofNoise(glm::vec4(this->log_list[i].back() * 0.015, (ofGetFrameNum() + this->log_list[i].size()) * 0.001)), 0, 1, -360, 360);
			auto next = this->log_list[i].back() + glm::vec2(step * cos(deg * DEG_TO_RAD), step * sin(deg * DEG_TO_RAD));
			this->log_list[i].push_back(next);
		}
	}
}

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

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

	ofSetColor(239, 39, 39);
	for (int i = 0; i < this->log_list.size(); i++) {

		ofBeginShape();
		ofVertices(this->log_list[i]);
		ofEndShape();
	}
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openFrameworks");

ofBackground(239);

ofNoFill();

this->radius = 180;

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

auto location = glm::vec2(this->radius * cos(deg * DEG_TO_RAD), this->radius * sin(deg * DEG_TO_RAD));

this->base_location_list.push_back(location);

}

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

void ofApp::update() {

this->log_list.clear();

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

vector<glm::vec3> log;

log.push_back(glm::vec3(this->base_location_list[i], 0));

this->log_list.push_back(log);

}

int step = 2;

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

while (this->log_list[i].size() < 120) {

auto deg = ofMap(ofNoise(glm::vec4(this->log_list[i].back() * 0.015, (ofGetFrameNum() + this->log_list[i].size()) * 0.001)), 0, 1, -360, 360);

auto next = this->log_list[i].back() + glm::vec2(step * cos(deg * DEG_TO_RAD), step * sin(deg * DEG_TO_RAD));

this->log_list[i].push_back(next);

}

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

void ofApp::draw() {

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

ofSetColor(239, 39, 39);

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

ofBeginShape();

ofVertices(this->log_list[i]);

ofEndShape();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20210801

2021年7月31日2021年7月31日

Looking into the box. Draw by openFrameworks

[ Video ]

[ About ]
箱の中にランダムウォークを閉じ込めて隙間から除く。

Trapping random walkers in a box and excluding them from the gap.

[ 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);
	void add_panel(vector<glm::vec3> vertices);

	ofEasyCam cam;

	ofMesh face, line, walker;
	vector<glm::vec3> base_location_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) {};

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

void add_panel(vector<glm::vec3> vertices);

ofEasyCam cam;

ofMesh face, line, walker;

vector<glm::vec3> base_location_list;

};

#include "ofApp.h"

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

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

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

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

	this->base_location_list = vector<glm::vec3>{
		glm::vec3(-300, -300, -300), glm::vec3(300, -300, -300),
		glm::vec3(-300, -300, 300), glm::vec3(300, -300, 300),
		glm::vec3(-300, 300, -300), glm::vec3(300, 300, -300),
		glm::vec3(-300, 300, 300), glm::vec3(300, 300, 300),
	};
}

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

	ofSeedRandom(39);

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

	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 len = 300;
	int size = 15;

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

		auto base_location = this->base_location_list[i];
		auto noise_param = ofRandom(1000);

		for (int s_1 = len * -0.5; s_1 <= len * 0.5; s_1 += size) {

			for (int s_2 = len * -0.5; s_2 <= len * 0.5; s_2 += size) {

				vector<glm::vec3> vertices;
				auto p = (len + size) * 0.5;

				vertices.clear();
				vertices.push_back(glm::vec3(p, s_1 - size * 0.5, s_2 - size * 0.5));
				vertices.push_back(glm::vec3(p, s_1 + size * 0.5, s_2 - size * 0.5));
				vertices.push_back(glm::vec3(p, s_1 + size * 0.5, s_2 + size * 0.5));
				vertices.push_back(glm::vec3(p, s_1 - size * 0.5, s_2 + size * 0.5));

				auto noise_value = ofNoise(p * 0.003, s_1 * 0.003, s_2 * 0.003, noise_param + ofGetFrameNum() * 0.01);
				auto add = 0;
				if (noise_value > 0.5) {

					add = ofMap(noise_value, 0.5, 1, 0, size * 5);
				}
				for (auto& vertex : vertices) {

					vertex.x += add;
					vertex += base_location;
				}

				this->add_panel(vertices);

				vertices.clear();
				vertices.push_back(glm::vec3(-p, s_1 - size * 0.5, s_2 - size * 0.5));
				vertices.push_back(glm::vec3(-p, s_1 + size * 0.5, s_2 - size * 0.5));
				vertices.push_back(glm::vec3(-p, s_1 + size * 0.5, s_2 + size * 0.5));
				vertices.push_back(glm::vec3(-p, s_1 - size * 0.5, s_2 + size * 0.5));

				noise_value = ofNoise(p * 0.003, s_1 * 0.003, s_2 * 0.003, noise_param + ofGetFrameNum() * 0.01);
				add = 0;
				if (noise_value > 0.5) {

					add = ofMap(noise_value, 0.5, 1, 0, size * 5);
				}
				for (auto& vertex : vertices) {

					vertex.x -= add;
					vertex += base_location;
				}

				this->add_panel(vertices);

				vertices.clear();
				vertices.push_back(glm::vec3(s_1 - size * 0.5, p, s_2 - size * 0.5));
				vertices.push_back(glm::vec3(s_1 + size * 0.5, p, s_2 - size * 0.5));
				vertices.push_back(glm::vec3(s_1 + size * 0.5, p, s_2 + size * 0.5));
				vertices.push_back(glm::vec3(s_1 - size * 0.5, p, s_2 + size * 0.5));

				noise_value = ofNoise(s_1 * 0.003, p * 0.003, s_2 * 0.003, noise_param + ofGetFrameNum() * 0.01);
				add = 0;
				if (noise_value > 0.5) {

					add = ofMap(noise_value, 0.5, 1, 0, size * 5);
				}
				for (auto& vertex : vertices) {

					vertex.y += add;
					vertex += base_location;
				}

				this->add_panel(vertices);

				vertices.clear();
				vertices.push_back(glm::vec3(s_1 - size * 0.5, -p, s_2 - size * 0.5));
				vertices.push_back(glm::vec3(s_1 + size * 0.5, -p, s_2 - size * 0.5));
				vertices.push_back(glm::vec3(s_1 + size * 0.5, -p, s_2 + size * 0.5));
				vertices.push_back(glm::vec3(s_1 - size * 0.5, -p, s_2 + size * 0.5));

				noise_value = ofNoise(s_1 * 0.003, p * 0.003, s_2 * 0.003, noise_param + ofGetFrameNum() * 0.01);
				add = 0;
				if (noise_value > 0.5) {

					add = ofMap(noise_value, 0.5, 1, 0, size * 5);
				}
				for (auto& vertex : vertices) {

					vertex.y -= add;
					vertex += base_location;
				}

				this->add_panel(vertices);

				vertices.clear();
				vertices.push_back(glm::vec3(s_1 - size * 0.5, s_2 - size * 0.5, p));
				vertices.push_back(glm::vec3(s_1 + size * 0.5, s_2 - size * 0.5, p));
				vertices.push_back(glm::vec3(s_1 + size * 0.5, s_2 + size * 0.5, p));
				vertices.push_back(glm::vec3(s_1 - size * 0.5, s_2 + size * 0.5, p));

				noise_value = ofNoise(s_1 * 0.003, s_2 * 0.003, p * 0.003, noise_param + ofGetFrameNum() * 0.01);
				add = 0;
				if (noise_value > 0.5) {

					add = ofMap(noise_value, 0.5, 1, 0, size * 5);
				}
				for (auto& vertex : vertices) {

					vertex.z += add;
					vertex += base_location;
				}

				this->add_panel(vertices);

				vertices.clear();
				vertices.push_back(glm::vec3(s_1 - size * 0.5, s_2 - size * 0.5, -p));
				vertices.push_back(glm::vec3(s_1 + size * 0.5, s_2 - size * 0.5, -p));
				vertices.push_back(glm::vec3(s_1 + size * 0.5, s_2 + size * 0.5, -p));
				vertices.push_back(glm::vec3(s_1 - size * 0.5, s_2 + size * 0.5, -p));

				noise_value = ofNoise(s_1 * 0.003, s_2 * 0.003, p * 0.003, noise_param + ofGetFrameNum() * 0.01);
				add = 0;
				if (noise_value > 0.5) {

					add = ofMap(noise_value, 0.5, 1, 0, size * 5);
				}
				for (auto& vertex : vertices) {

					vertex.z -= add;
					vertex += base_location;
				}

				this->add_panel(vertices);
			}
		}

		int color_index = 0;
		for (int k = 0; k < 10; k++) {

			this->walker.addVertex(this->base_location_list[i] + glm::vec3(
				ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.005), 0, 1, -100, 100),
				ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.005), 0, 1, -100, 100),
				ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.005), 0, 1, -100, 100)
			));

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

	/*
	for (int k = 0; k < this->walker.getNumVertices(); k++) {

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

			if (glm::distance(this->walker.getVertex(k), this->walker.getVertex(m)) < 30) {

				this->walker.addIndex(k);
				this->walker.addIndex(m);
			}
		}
	}
	*/
}

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

	this->cam.begin();
	ofRotateX(ofGetFrameNum() * 0.37);
	ofRotateY(ofGetFrameNum() * 0.72);

	ofSetColor(239);
	this->face.draw();

	ofSetColor(39);
	this->line.drawWireframe();

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

		ofSetColor(this->walker.getColor(i));
		ofDrawSphere(this->walker.getVertex(i), 30);
	}

	this->cam.end();
}

//--------------------------------------------------------------
void ofApp::add_panel(vector<glm::vec3> vertices) {

	this->face.addVertices(vertices);

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

	this->line.addVertices(vertices);

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

//--------------------------------------------------------------
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->walker.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);

this->base_location_list = vector<glm::vec3>{

glm::vec3(-300, -300, -300), glm::vec3(300, -300, -300),

glm::vec3(-300, -300, 300), glm::vec3(300, -300, 300),

glm::vec3(-300, 300, -300), glm::vec3(300, 300, -300),

glm::vec3(-300, 300, 300), glm::vec3(300, 300, 300),

};

}

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

void ofApp::update() {

ofSeedRandom(39);

this->face.clear();

this->line.clear();

this->walker.clear();

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 len = 300;

int size = 15;

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

auto base_location = this->base_location_list[i];

auto noise_param = ofRandom(1000);

for (int s_1 = len * -0.5; s_1 <= len * 0.5; s_1 += size) {

for (int s_2 = len * -0.5; s_2 <= len * 0.5; s_2 += size) {

vector<glm::vec3> vertices;

auto p = (len + size) * 0.5;

vertices.clear();

vertices.push_back(glm::vec3(p, s_1 - size * 0.5, s_2 - size * 0.5));

vertices.push_back(glm::vec3(p, s_1 + size * 0.5, s_2 - size * 0.5));

vertices.push_back(glm::vec3(p, s_1 + size * 0.5, s_2 + size * 0.5));

vertices.push_back(glm::vec3(p, s_1 - size * 0.5, s_2 + size * 0.5));

auto noise_value = ofNoise(p * 0.003, s_1 * 0.003, s_2 * 0.003, noise_param + ofGetFrameNum() * 0.01);

auto add = 0;

if (noise_value > 0.5) {

add = ofMap(noise_value, 0.5, 1, 0, size * 5);

}

for (auto& vertex : vertices) {

vertex.x += add;

vertex += base_location;

}

this->add_panel(vertices);

vertices.clear();

vertices.push_back(glm::vec3(-p, s_1 - size * 0.5, s_2 - size * 0.5));

vertices.push_back(glm::vec3(-p, s_1 + size * 0.5, s_2 - size * 0.5));

vertices.push_back(glm::vec3(-p, s_1 + size * 0.5, s_2 + size * 0.5));

vertices.push_back(glm::vec3(-p, s_1 - size * 0.5, s_2 + size * 0.5));

noise_value = ofNoise(p * 0.003, s_1 * 0.003, s_2 * 0.003, noise_param + ofGetFrameNum() * 0.01);

add = 0;

if (noise_value > 0.5) {

add = ofMap(noise_value, 0.5, 1, 0, size * 5);

}

for (auto& vertex : vertices) {

vertex.x -= add;

vertex += base_location;

}

this->add_panel(vertices);

vertices.clear();

vertices.push_back(glm::vec3(s_1 - size * 0.5, p, s_2 - size * 0.5));

vertices.push_back(glm::vec3(s_1 + size * 0.5, p, s_2 - size * 0.5));

vertices.push_back(glm::vec3(s_1 + size * 0.5, p, s_2 + size * 0.5));

vertices.push_back(glm::vec3(s_1 - size * 0.5, p, s_2 + size * 0.5));

noise_value = ofNoise(s_1 * 0.003, p * 0.003, s_2 * 0.003, noise_param + ofGetFrameNum() * 0.01);

add = 0;

if (noise_value > 0.5) {

add = ofMap(noise_value, 0.5, 1, 0, size * 5);

}

for (auto& vertex : vertices) {

vertex.y += add;

vertex += base_location;

}

this->add_panel(vertices);

vertices.clear();

vertices.push_back(glm::vec3(s_1 - size * 0.5, -p, s_2 - size * 0.5));

vertices.push_back(glm::vec3(s_1 + size * 0.5, -p, s_2 - size * 0.5));

vertices.push_back(glm::vec3(s_1 + size * 0.5, -p, s_2 + size * 0.5));

vertices.push_back(glm::vec3(s_1 - size * 0.5, -p, s_2 + size * 0.5));

noise_value = ofNoise(s_1 * 0.003, p * 0.003, s_2 * 0.003, noise_param + ofGetFrameNum() * 0.01);

add = 0;

if (noise_value > 0.5) {

add = ofMap(noise_value, 0.5, 1, 0, size * 5);

}

for (auto& vertex : vertices) {

vertex.y -= add;

vertex += base_location;

}

this->add_panel(vertices);

vertices.clear();

vertices.push_back(glm::vec3(s_1 - size * 0.5, s_2 - size * 0.5, p));

vertices.push_back(glm::vec3(s_1 + size * 0.5, s_2 - size * 0.5, p));

vertices.push_back(glm::vec3(s_1 + size * 0.5, s_2 + size * 0.5, p));

vertices.push_back(glm::vec3(s_1 - size * 0.5, s_2 + size * 0.5, p));

noise_value = ofNoise(s_1 * 0.003, s_2 * 0.003, p * 0.003, noise_param + ofGetFrameNum() * 0.01);

add = 0;

if (noise_value > 0.5) {

add = ofMap(noise_value, 0.5, 1, 0, size * 5);

}

for (auto& vertex : vertices) {

vertex.z += add;

vertex += base_location;

}

this->add_panel(vertices);

vertices.clear();

vertices.push_back(glm::vec3(s_1 - size * 0.5, s_2 - size * 0.5, -p));

vertices.push_back(glm::vec3(s_1 + size * 0.5, s_2 - size * 0.5, -p));

vertices.push_back(glm::vec3(s_1 + size * 0.5, s_2 + size * 0.5, -p));

vertices.push_back(glm::vec3(s_1 - size * 0.5, s_2 + size * 0.5, -p));

noise_value = ofNoise(s_1 * 0.003, s_2 * 0.003, p * 0.003, noise_param + ofGetFrameNum() * 0.01);

add = 0;

if (noise_value > 0.5) {

add = ofMap(noise_value, 0.5, 1, 0, size * 5);

}

for (auto& vertex : vertices) {

vertex.z -= add;

vertex += base_location;

}

this->add_panel(vertices);

}

int color_index = 0;

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

this->walker.addVertex(this->base_location_list[i] + glm::vec3(

ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.005), 0, 1, -100, 100),

ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.005), 0, 1, -100, 100)

));

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

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

}

for (int k = 0; k < this->walker.getNumVertices(); k++) {

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

if (glm::distance(this->walker.getVertex(k), this->walker.getVertex(m)) < 30) {

this->walker.addIndex(k);

this->walker.addIndex(m);

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateX(ofGetFrameNum() * 0.37);

ofRotateY(ofGetFrameNum() * 0.72);

ofSetColor(239);

this->face.draw();

ofSetColor(39);

this->line.drawWireframe();

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

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

ofDrawSphere(this->walker.getVertex(i), 30);

}

this->cam.end();

}

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

void ofApp::add_panel(vector<glm::vec3> vertices) {

this->face.addVertices(vertices);

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

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

this->line.addVertices(vertices);

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

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

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

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

}

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

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/Insta20210731

2021年7月30日2021年7月30日

Mask by character. Draw by openFrameworks

[ Video ]

[ About ]
ofImageのマスク機能を使って、文字でマスキング。
ofImage.getTextureReference().SetAlphaMask(ofFbo.getTexture())でofFboの描写内容を使う。

Masking with text using ofImage’s mask function.
Use ofImage.getTextureReference().SetAlphaMask(ofFbo.getTexture()) to use ofFbo’s description.

[ 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 target, float size, ofColor fill_color, ofColor no_fill_color);

	ofImage image;
	ofFbo fbo;

	float font_size;
	ofTrueTypeFont font;
};

#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 target, float size, ofColor fill_color, ofColor no_fill_color);

ofImage image;

ofFbo fbo;

float font_size;

ofTrueTypeFont font;

};

#include "ofApp.h"

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

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

	ofBackground(239);
	ofSetLineWidth(2);
	ofSetRectMode(ofRectMode::OF_RECTMODE_CENTER);

	this->image.loadImage("images/lenna.png");
	this->image.resize(720, 720);
	this->fbo.allocate(720, 720);

	this->font_size = 28;
	this->font.loadFont("fonts/Kazesawa-Bold.ttf", this->font_size, true, true, true);

}

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

	ofSeedRandom(39);
	string word = "ABCDEFGHEJKLMNOPQRSTUVWXYZ";
	int sample_count = 100;

	this->fbo.begin();
	ofClear(0);
	ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);

	ofTranslate(this->fbo.getWidth() * 0.5, this->fbo.getHeight() * 0.5);

	for (int x = -300; x <= 300; x += this->font_size) {

		for (int y = -300; y <= 300; y += this->font_size) {

			int word_index = (int)ofMap(ofNoise(x * 0.002, y * 0.002, ofGetFrameNum() * 0.005), 0, 1, 0, word.size() * 2) % word.size();

			ofPath chara_path = this->font.getCharacterAsPoints(word[word_index], true, false);
			vector<ofPolyline> outline = chara_path.getOutline();

			ofFill();
			ofSetColor(255);
			ofBeginShape();
			for (int outline_index = 0; outline_index < outline.size(); outline_index++) {

				if (outline_index != 0) { ofNextContour(true); }

				auto vertices = outline[outline_index].getResampledByCount(sample_count).getVertices();
				for (auto& vertex : vertices) {

					auto location = vertex - glm::vec3(this->font_size * 0.5, this->font_size * -0.5, 0);
					location += glm::vec3(x, y, 0);
					ofVertex(location);
				}
			}
			ofEndShape();

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

				if (outline_index != 0) { ofNextContour(true); }

				auto vertices = outline[outline_index].getResampledByCount(sample_count).getVertices();
				for (auto& vertex : vertices) {

					auto location = vertex - glm::vec3(this->font_size * 0.5, this->font_size * -0.5, 0);
					location += glm::vec3(x, y, 0);
					ofVertex(location);
				}
			}
			ofEndShape();
		}
	}

	this->fbo.end();

	this->image.getTextureReference().setAlphaMask(this->fbo.getTexture());
	this->image.update();
}

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

	ofSetColor(255);
	this->image.draw(ofGetWindowSize() * 0.5);
}

//--------------------------------------------------------------
void ofApp::draw_arrow(glm::vec2 location, glm::vec2 target, float size, ofColor fill_color, ofColor no_fill_color) {

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

	ofSetColor(fill_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(no_fill_color);
	ofNoFill();
	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)));
	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)) * 0.25);
	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());
}

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#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(30);

ofSetWindowTitle("openframeworks");

ofBackground(239);

ofSetLineWidth(2);

ofSetRectMode(ofRectMode::OF_RECTMODE_CENTER);

this->image.loadImage("images/lenna.png");

this->image.resize(720, 720);

this->fbo.allocate(720, 720);

this->font_size = 28;

this->font.loadFont("fonts/Kazesawa-Bold.ttf", this->font_size, true, true, true);

}

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

void ofApp::update() {

ofSeedRandom(39);

string word = "ABCDEFGHEJKLMNOPQRSTUVWXYZ";

int sample_count = 100;

this->fbo.begin();

ofClear(0);

ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);

ofTranslate(this->fbo.getWidth() * 0.5, this->fbo.getHeight() * 0.5);

for (int x = -300; x <= 300; x += this->font_size) {

for (int y = -300; y <= 300; y += this->font_size) {

int word_index = (int)ofMap(ofNoise(x * 0.002, y * 0.002, ofGetFrameNum() * 0.005), 0, 1, 0, word.size() * 2) % word.size();

ofPath chara_path = this->font.getCharacterAsPoints(word[word_index], true, false);

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

ofFill();

ofSetColor(255);

ofBeginShape();

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

if (outline_index != 0) { ofNextContour(true); }

auto vertices = outline[outline_index].getResampledByCount(sample_count).getVertices();

for (auto& vertex : vertices) {

auto location = vertex - glm::vec3(this->font_size * 0.5, this->font_size * -0.5, 0);

location += glm::vec3(x, y, 0);

ofVertex(location);

}

ofEndShape();

ofNoFill();

ofSetColor(0);

ofBeginShape();

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

if (outline_index != 0) { ofNextContour(true); }

auto vertices = outline[outline_index].getResampledByCount(sample_count).getVertices();

for (auto& vertex : vertices) {

auto location = vertex - glm::vec3(this->font_size * 0.5, this->font_size * -0.5, 0);

location += glm::vec3(x, y, 0);

ofVertex(location);

}

ofEndShape();

}

this->fbo.end();

this->image.getTextureReference().setAlphaMask(this->fbo.getTexture());

this->image.update();

}

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

void ofApp::draw() {

ofSetColor(255);

this->image.draw(ofGetWindowSize() * 0.5);

}

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

void ofApp::draw_arrow(glm::vec2 location, glm::vec2 target, float size, ofColor fill_color, ofColor no_fill_color) {

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

ofSetColor(fill_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(no_fill_color);

ofNoFill();

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)));

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)) * 0.25);

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/Insta20210730

2025年7月
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