noise – ページ 162 – プログラミング de 落描き

2021年8月11日2021年8月11日

Transformation sphere. Draw by openFrameworks

[ Video ]

[ About ]
昨日のソースコードから3行ほど変更をしました。
少しの変更でも見た目が大きく変化するのが楽しいです。

I changed about three lines from yesterday’s source code.
It’s fun to see how a small change can make a big difference in appearance.

[ 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, draw_mesh, line_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, draw_mesh, line_mesh;

};

#include "ofApp.h"

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

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

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

	auto ico_sphere = ofIcoSpherePrimitive(300, 3);
	this->mesh = ico_sphere.getMesh();
}

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

	this->draw_mesh = this->mesh;
	this->line_mesh = this->mesh;

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

		glm::vec3 vertex = this->draw_mesh.getVertex(i);
		//auto noise_value = ofNoise(glm::vec4(vertex * 0.003, ofGetFrameNum() * 0.005));
		auto noise_value = ofNoise(glm::vec2(i * 0.001, ofGetFrameNum() * 0.008));

		ofColor color = ofColor(239);

		if (noise_value < 0.5) {

			if (noise_value < 0.4) {

				vertex = glm::normalize(vertex) * 250; // 0 -> 250
				color = ofColor(0);
			}
			else {

				vertex = glm::normalize(vertex) * ofMap(noise_value, 0.4, 0.5, 250, 300); // 0 -> 250
				color = ofColor(ofMap(noise_value, 0.4, 0.5, 0, 239));
			}
		}

		this->draw_mesh.setVertex(i, vertex);
		this->line_mesh.setVertex(i, vertex);
		this->draw_mesh.addColor(color);

	}
}

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

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

	this->draw_mesh.draw();

	ofSetColor(0);
	this->line_mesh.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);

ofSetLineWidth(2);

ofEnableDepthTest();

auto ico_sphere = ofIcoSpherePrimitive(300, 3);

this->mesh = ico_sphere.getMesh();

}

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

void ofApp::update() {

this->draw_mesh = this->mesh;

this->line_mesh = this->mesh;

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

glm::vec3 vertex = this->draw_mesh.getVertex(i);

//auto noise_value = ofNoise(glm::vec4(vertex * 0.003, ofGetFrameNum() * 0.005));

auto noise_value = ofNoise(glm::vec2(i * 0.001, ofGetFrameNum() * 0.008));

ofColor color = ofColor(239);

if (noise_value < 0.5) {

if (noise_value < 0.4) {

vertex = glm::normalize(vertex) * 250; // 0 -> 250

color = ofColor(0);

}

else {

vertex = glm::normalize(vertex) * ofMap(noise_value, 0.4, 0.5, 250, 300); // 0 -> 250

color = ofColor(ofMap(noise_value, 0.4, 0.5, 0, 239));

}

this->draw_mesh.setVertex(i, vertex);

this->line_mesh.setVertex(i, vertex);

this->draw_mesh.addColor(color);

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateX(ofGetFrameNum() * 0.37);

ofRotateY(ofGetFrameNum() * 0.72);

this->draw_mesh.draw();

ofSetColor(0);

this->line_mesh.drawWireframe();

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20210811

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2021年8月10日2021年8月10日

Concave Sphere. Draw by openFrameworks

[ Video ]

[ About ]
ofIcoSphereからofIcoSphere.getMesh()取得したメッシュにofMesh.setVertex(index, vertex)で各頂点を上書きして形を変形させる。

ofMesh.setVertex(index, vertex) is used to overwrite each vertex on the mesh obtained from ofIcoSphere.getMesh() to deform the shape.

[ 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, draw_mesh, line_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, draw_mesh, line_mesh;

};

#include "ofApp.h"

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

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

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

	auto ico_sphere = ofIcoSpherePrimitive(300, 3);
	this->mesh = ico_sphere.getMesh();
}

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

	this->draw_mesh = this->mesh;
	this->line_mesh = this->mesh;

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

		glm::vec3 vertex = this->draw_mesh.getVertex(i);
		auto noise_value = ofNoise(glm::vec4(vertex * 0.005, ofGetFrameNum() * 0.005));

		ofColor color = ofColor(239);

		if (noise_value < 0.5) {

			if (noise_value < 0.4) {

				vertex = glm::normalize(vertex) * 0;
				color = ofColor(0);
			}
			else {

				vertex = glm::normalize(vertex) * ofMap(noise_value, 0.4, 0.5, 0, 300);
				color = ofColor(ofMap(noise_value, 0.4, 0.5, 0, 239));
			}
		}

		this->draw_mesh.setVertex(i, vertex);
		this->line_mesh.setVertex(i, vertex);
		this->draw_mesh.addColor(color);

	}
}

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

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

	this->draw_mesh.draw();

	ofSetColor(39);
	this->line_mesh.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);

ofSetLineWidth(2);

ofEnableDepthTest();

auto ico_sphere = ofIcoSpherePrimitive(300, 3);

this->mesh = ico_sphere.getMesh();

}

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

void ofApp::update() {

this->draw_mesh = this->mesh;

this->line_mesh = this->mesh;

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

glm::vec3 vertex = this->draw_mesh.getVertex(i);

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

ofColor color = ofColor(239);

if (noise_value < 0.5) {

if (noise_value < 0.4) {

vertex = glm::normalize(vertex) * 0;

color = ofColor(0);

}

else {

vertex = glm::normalize(vertex) * ofMap(noise_value, 0.4, 0.5, 0, 300);

color = ofColor(ofMap(noise_value, 0.4, 0.5, 0, 239));

}

this->draw_mesh.setVertex(i, vertex);

this->line_mesh.setVertex(i, vertex);

this->draw_mesh.addColor(color);

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateX(ofGetFrameNum() * 0.37);

ofRotateY(ofGetFrameNum() * 0.72);

this->draw_mesh.draw();

ofSetColor(39);

this->line_mesh.drawWireframe();

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20210810

[ほしいものリスト]
Amazon

[ Sponsor Link ]

2021年8月7日

Random walk of Hiragana. Draw by openFrameworks

[ Video ]

[ About ]
日本語フォントによるランダムウォーク。
ソースコードで日本語(Unicode)を扱うにはu8プレフィックスを付けます。

Random walk with Japanese font.
To handle Japanese (Unicode) in source code, add the u8 prefix.

[ Source ]

#pragma once
#include "ofMain.h"

class ofApp : public ofBaseApp {

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

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

	ofEasyCam cam;

	vector<glm::vec3> location_list;
	vector<int> param_list;
	vector<int> word_index_list;
	vector<vector<int>> route_info_list;

	vector<int> index_list;

	ofTrueTypeFont font;
	int font_size;

	vector<string> words;
};

#pragma once

#include "ofMain.h"

class ofApp : public ofBaseApp {

public:

void setup();

void update();

void draw();

void keyPressed(int key) {};

void keyReleased(int key) {};

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

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

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

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

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

void dragEvent(ofDragInfo dragInfo) {};

void gotMessage(ofMessage msg) {};

ofEasyCam cam;

vector<glm::vec3> location_list;

vector<int> param_list;

vector<int> word_index_list;

vector<vector<int>> route_info_list;

vector<int> index_list;

ofTrueTypeFont font;

int font_size;

vector<string> words;

};

#include "ofApp.h"

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

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

	ofBackground(239);
	ofSetLineWidth(0.5);
	ofEnableDepthTest();

	int span = 30;
	for (int x = -300; x <= 300; x += span) {

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

			this->location_list.push_back(glm::vec3(x, y, 0));
			this->param_list.push_back(0);
			this->word_index_list.push_back(0);
		}
	}

	for (auto& location : this->location_list) {

		vector<int> route_info = vector<int>();
		int index = -1;
		for (auto& other : this->location_list) {

			index++;
			if (location == other) { continue; }

			float distance = glm::distance(location, other);
			if (distance <= span) {

				route_info.push_back(index);
			}
		}

		this->route_info_list.push_back(route_info);
	}

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

		this->index_list.push_back((int)ofRandom(this->location_list.size()));
	}

	this->font_size = 23;
	ofTrueTypeFontSettings font_settings("fonts/msgothic.ttc", this->font_size);
	font_settings.antialiased = true;
	font_settings.addRanges(ofAlphabet::Japanese);
	this->font.load(font_settings);

	this->words = {

		u8"あ", u8"い", u8"う", u8"え", u8"お",
		u8"か", u8"き", u8"く", u8"け", u8"こ",
		u8"さ", u8"し", u8"す", u8"せ", u8"そ",
		u8"た", u8"ち", u8"つ", u8"て", u8"と",
		u8"な", u8"に", u8"ぬ", u8"ね", u8"の",
		u8"は", u8"ひ", u8"ふ", u8"へ", u8"ほ",
		u8"ま", u8"み", u8"む", u8"め", u8"も",
		u8"や", u8"ゆ", u8"よ",
		u8"ら", u8"り", u8"る", u8"れ", u8"ろ",
		u8"わ", u8"を", u8"ん",
	};
}

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

	if (ofGetFrameNum() % 3 != 0) { 
	
		for (int i = 0; i < this->index_list.size(); i++) {

			this->word_index_list[this->index_list[i]] = (int)ofRandom(this->words.size());
		}
		return;
	}

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

		int next_index = this->route_info_list[this->index_list[i]][(int)ofRandom(this->route_info_list[this->index_list[i]].size())];
		for (int k = 0; k < this->route_info_list[this->index_list[i]].size(); k++) {

			if (this->param_list[next_index] <= 0) {

				this->param_list[next_index] = 45;
				this->index_list[i] = next_index;
				this->word_index_list[next_index] = (int)ofRandom(this->words.size());
				break;
			}
		}
	}
}

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

	this->cam.begin();

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

		if (this->param_list[i] > 0) {

			ofFill();
			ofSetColor(ofMap(this->param_list[i], 0, 45, 239, 39));		
			this->font.drawString(this->words[this->word_index_list[i]], this->location_list[i].x - 15, this->location_list[i].y - 15);
		}

		if (this->param_list[i] > 0) { this->param_list[i] -= 1; }

		ofNoFill();
		ofSetColor(39);
		ofDrawRectangle(this->location_list[i] - glm::vec2(15, 15), 30, 30);
	}

	this->cam.end();
}

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

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

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#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openFrameworks");

ofBackground(239);

ofSetLineWidth(0.5);

ofEnableDepthTest();

int span = 30;

for (int x = -300; x <= 300; x += span) {

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

this->location_list.push_back(glm::vec3(x, y, 0));

this->param_list.push_back(0);

this->word_index_list.push_back(0);

}

for (auto& location : this->location_list) {

vector<int> route_info = vector<int>();

int index = -1;

for (auto& other : this->location_list) {

index++;

if (location == other) { continue; }

float distance = glm::distance(location, other);

if (distance <= span) {

route_info.push_back(index);

}

this->route_info_list.push_back(route_info);

}

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

this->index_list.push_back((int)ofRandom(this->location_list.size()));

}

this->font_size = 23;

ofTrueTypeFontSettings font_settings("fonts/msgothic.ttc", this->font_size);

font_settings.antialiased = true;

font_settings.addRanges(ofAlphabet::Japanese);

this->font.load(font_settings);

this->words = {

u8"あ", u8"い", u8"う", u8"え", u8"お",

u8"か", u8"き", u8"く", u8"け", u8"こ",

u8"さ", u8"し", u8"す", u8"せ", u8"そ",

u8"た", u8"ち", u8"つ", u8"て", u8"と",

u8"な", u8"に", u8"ぬ", u8"ね", u8"の",

u8"は", u8"ひ", u8"ふ", u8"へ", u8"ほ",

u8"ま", u8"み", u8"む", u8"め", u8"も",

u8"や", u8"ゆ", u8"よ",

u8"ら", u8"り", u8"る", u8"れ", u8"ろ",

u8"わ", u8"を", u8"ん",

};

}

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

void ofApp::update() {

if (ofGetFrameNum() % 3 != 0) {

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

this->word_index_list[this->index_list[i]] = (int)ofRandom(this->words.size());

}

return;

}

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

int next_index = this->route_info_list[this->index_list[i]][(int)ofRandom(this->route_info_list[this->index_list[i]].size())];

for (int k = 0; k < this->route_info_list[this->index_list[i]].size(); k++) {

if (this->param_list[next_index] <= 0) {

this->param_list[next_index] = 45;

this->index_list[i] = next_index;

this->word_index_list[next_index] = (int)ofRandom(this->words.size());

break;

}

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

void ofApp::draw() {

this->cam.begin();

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

if (this->param_list[i] > 0) {

ofFill();

ofSetColor(ofMap(this->param_list[i], 0, 45, 239, 39));

this->font.drawString(this->words[this->word_index_list[i]], this->location_list[i].x - 15, this->location_list[i].y - 15);

}

if (this->param_list[i] > 0) { this->param_list[i] -= 1; }

ofNoFill();

ofSetColor(39);

ofDrawRectangle(this->location_list[i] - glm::vec2(15, 15), 30, 30);

}

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20210807

[ほしいものリスト]
Amazon

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2024年11月
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