RandomWalk – ページ 7 – プログラミング de 落描き

2023年7月17日

Squares transit. Draw by openFrameworks

[ Video ]

[ About ]
マス目運動。

[ 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) {};

	float len;
	vector<glm::vec2> start_location_list;
	vector<vector<glm::vec2>> 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 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) {};

float len;

vector<glm::vec2> start_location_list;

vector<vector<glm::vec2>> location_list;

};

#include "ofApp.h"

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

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

	ofBackground(239);
	ofSetLineWidth(1.5);

	this->len = 30;
	for (float x = 0; x < ofGetWidth(); x += this->len) {

		for (float y = 0; y < ofGetHeight(); y += this->len) {

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

	for (int i = 0; i < 16; i++) {

		int r = ofRandom(this->start_location_list.size());

		auto log_list = vector<glm::vec2>();
		log_list.push_back(this->start_location_list[r]);
		this->location_list.push_back(log_list);
	}
}

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

	if (ofGetFrameNum() % 2 == 0) {

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

			int r = ofRandom(4);
			int deg_start = r * 90;
			for (int deg = deg_start; deg < deg_start + 360; deg += 90) {

				auto tmp_location = log_list.back() + glm::vec2(this->len * cos(deg * DEG_TO_RAD), this->len * sin(deg * DEG_TO_RAD));
				if (tmp_location.x < 0 || tmp_location.x > ofGetWidth() - this->len || tmp_location.y < 0 || tmp_location.y > ofGetHeight() - this->len) {

					continue;
				}

				bool flag = false;
				for (int i = 0; i < log_list.size(); i++) {

					if (tmp_location == log_list[i] && deg_start != deg && deg_start % 360 == deg % 360){

						flag = true;
						break;
					}
				}
				if (flag) { continue; }

				log_list.push_back(tmp_location);
				break;
			}

			while (log_list.size() > 5) {

				log_list.erase(log_list.begin());
			}
		}
	}
}

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

	int color_index = 0;
	for (auto& log_list : this->location_list) {

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

			ofFill();
			ofSetColor(ofColor(0, ofMap(i, 0, log_list.size(), 32, 200)));
			ofDrawRectangle(log_list[i], this->len, this->len);

			ofNoFill();
			ofSetColor(0);
			ofDrawRectangle(log_list[i], this->len, this->len);
		}
	}

	ofSetColor(0, 32);
	ofNoFill();
	for (float x = 0; x < ofGetWidth(); x += this->len) {

		for (float y = 0; y < ofGetHeight(); y += this->len) {

			ofDrawRectangle(glm::vec3(x, y, 0), this->len, this->len);
		}
	}
}

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

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

100

101

102

103

104

105

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(30);

ofSetWindowTitle("openframeworks");

ofBackground(239);

ofSetLineWidth(1.5);

this->len = 30;

for (float x = 0; x < ofGetWidth(); x += this->len) {

for (float y = 0; y < ofGetHeight(); y += this->len) {

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

}

for (int i = 0; i < 16; i++) {

int r = ofRandom(this->start_location_list.size());

auto log_list = vector<glm::vec2>();

log_list.push_back(this->start_location_list[r]);

this->location_list.push_back(log_list);

}

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

void ofApp::update() {

if (ofGetFrameNum() % 2 == 0) {

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

int r = ofRandom(4);

int deg_start = r * 90;

for (int deg = deg_start; deg < deg_start + 360; deg += 90) {

auto tmp_location = log_list.back() + glm::vec2(this->len * cos(deg * DEG_TO_RAD), this->len * sin(deg * DEG_TO_RAD));

if (tmp_location.x < 0 || tmp_location.x > ofGetWidth() - this->len || tmp_location.y < 0 || tmp_location.y > ofGetHeight() - this->len) {

continue;

}

bool flag = false;

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

if (tmp_location == log_list[i] && deg_start != deg && deg_start % 360 == deg % 360){

flag = true;

break;

}

if (flag) { continue; }

log_list.push_back(tmp_location);

break;

}

while (log_list.size() > 5) {

log_list.erase(log_list.begin());

}

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

void ofApp::draw() {

int color_index = 0;

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

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

ofFill();

ofSetColor(ofColor(0, ofMap(i, 0, log_list.size(), 32, 200)));

ofDrawRectangle(log_list[i], this->len, this->len);

ofNoFill();

ofSetColor(0);

ofDrawRectangle(log_list[i], this->len, this->len);

}

ofSetColor(0, 32);

ofNoFill();

for (float x = 0; x < ofGetWidth(); x += this->len) {

for (float y = 0; y < ofGetHeight(); y += this->len) {

ofDrawRectangle(glm::vec3(x, y, 0), this->len, this->len);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20230717

[ほしいものリスト]
Amazon

[ Sponsor Link ]

2023年7月16日

Random walks in cube. Draw by openFrameworks

[ Video ]

[ About ]
キューブの中のランダムウォーク

[ Source ]

#pragma once
#include "ofMain.h"

class Actor {
public:
	Actor(vector<glm::vec3>& location_list, vector<vector<int>>& next_index_list, vector<int>& destination_list);
	void update(const int& frame_span, vector<glm::vec3>& location_list, vector<vector<int>>& next_index_list, vector<int>& destination_list);
	void draw();
	glm::vec3 getLocation();
	deque<glm::vec3> getLog();
	void setColor(ofColor color);
	ofColor getColor();

private:

	int select_index;
	int next_index;

	glm::vec3 location;
	deque<glm::vec3> log;
	ofColor color;

	ofMesh mesh;
};

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) {};

	glm::vec3 make_point(float R, float r, float u, float v);

	vector<glm::vec3> location_list;
	vector<vector<int>> next_index_list;
	vector<int> destination_list;

	vector<unique_ptr<Actor>> actor_list;

	ofEasyCam cam;
};

#pragma once

#include "ofMain.h"

class Actor {

public:

Actor(vector<glm::vec3>& location_list, vector<vector<int>>& next_index_list, vector<int>& destination_list);

void update(const int& frame_span, vector<glm::vec3>& location_list, vector<vector<int>>& next_index_list, vector<int>& destination_list);

void draw();

glm::vec3 getLocation();

deque<glm::vec3> getLog();

void setColor(ofColor color);

ofColor getColor();

private:

int select_index;

int next_index;

glm::vec3 location;

deque<glm::vec3> log;

ofColor color;

ofMesh mesh;

};

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) {};

glm::vec3 make_point(float R, float r, float u, float v);

vector<glm::vec3> location_list;

vector<vector<int>> next_index_list;

vector<int> destination_list;

vector<unique_ptr<Actor>> actor_list;

ofEasyCam cam;

};

#include "ofApp.h"	

//--------------------------------------------------------------
Actor::Actor(vector<glm::vec3>& location_list, vector<vector<int>>& next_index_list, vector<int>& destination_list) {

	this->select_index = ofRandom(location_list.size());
	while (true) {

		auto itr = find(destination_list.begin(), destination_list.end(), this->select_index);
		if (itr == destination_list.end()) {

			destination_list.push_back(this->select_index);
			break;
		}

		this->select_index = (this->select_index + 1) % location_list.size();
	}

	this->next_index = this->select_index;

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

//--------------------------------------------------------------
void Actor::update(const int& frame_span, vector<glm::vec3>& location_list, vector<vector<int>>& next_index_list, vector<int>& destination_list) {

	if (ofGetFrameNum() % frame_span == 0) {

		auto tmp_index = this->select_index;
		this->select_index = this->next_index;
		int retry = next_index_list[this->select_index].size();
		this->next_index = next_index_list[this->select_index][(int)ofRandom(next_index_list[this->select_index].size())];
		while (--retry > 0) {

			auto destination_itr = find(destination_list.begin(), destination_list.end(), this->next_index);
			if (destination_itr == destination_list.end()) {

				if (tmp_index != this->next_index) {

					destination_list.push_back(this->next_index);
					break;
				}
			}

			this->next_index = next_index_list[this->select_index][(this->next_index + 1) % next_index_list[this->select_index].size()];
		}
		if (retry <= 0) {

			destination_list.push_back(this->select_index);
			this->next_index = this->select_index;
		}
	}

	auto param = ofGetFrameNum() % frame_span;
	auto distance = location_list[this->next_index] - location_list[this->select_index];
	this->location = location_list[this->select_index] + distance / frame_span * param;

	this->log.push_front(this->location);
	while (this->log.size() > frame_span * 6) { this->log.pop_back(); }

	this->mesh.clear();
	for (int i = 0; i < this->log.size() - 1; i++) {

		this->mesh.addVertex(this->log[i]);
		this->mesh.addColor(ofColor(this->color, ofMap(i, 0, this->log.size(), 255, 0)));
		if (i > 0) {

			this->mesh.addIndex(i);
			this->mesh.addIndex(i - 1);
		}
	}
}

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

	this->mesh.draw();
}

//--------------------------------------------------------------
glm::vec3 Actor::getLocation() {

	return this->location;
}

//--------------------------------------------------------------
deque<glm::vec3> Actor::getLog() {

	return this->log;
}

//--------------------------------------------------------------
void Actor::setColor(ofColor color) {

	this->color = color;
}

//--------------------------------------------------------------
ofColor Actor::getColor() {

	return this->color;
}

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

	ofSetFrameRate(30);
	ofSetWindowTitle("openFrameworks");

	ofBackground(0);
	ofSetLineWidth(1);
	ofEnableDepthTest();

	int span = 10;
	for (int x = -150; x <= 150; x += span) {

		for (int y = -150; y <= 150; y += span) {

			for (int z = -150; z <= 150; z += span) {

				bool x_flag = x < -100 || x > 100;
				bool y_flag = y < -100 || y > 100;
				bool z_flag = z < -100 || z > 100;

				if (((x_flag || y_flag) && z_flag) || ((y_flag || z_flag) && x_flag)) {

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

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

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

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

			float distance = glm::distance(location, other);
			if (distance <= 10) {

				next_index.push_back(index);
			}
		}

		this->next_index_list.push_back(next_index);
	}

	ofColor color;
	for (int i = 0; i < 650; i++) {

		this->actor_list.push_back(make_unique<Actor>(this->location_list, this->next_index_list, this->destination_list));

		color.setHsb(ofMap(i, 0, 500, 0, 255), 255, 255);
		this->actor_list.back()->setColor(color);
	}
}

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

	int frame_span = 5;
	int prev_index_size = 0;

	if (ofGetFrameNum() % frame_span == 0) {

		prev_index_size = this->destination_list.size();
	}

	for (auto& actor : this->actor_list) {

		actor->update(frame_span, this->location_list, this->next_index_list, this->destination_list);
	}

	if (prev_index_size != 0) {

		this->destination_list.erase(this->destination_list.begin(), this->destination_list.begin() + prev_index_size);
	}
}

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

	this->cam.begin();
	ofTranslate(-5, -5, 0);
	this->cam.setPosition(glm::vec3(0, 0, 500));
	ofRotateY(ofGetFrameNum());

	for (auto& actor : this->actor_list) {

		actor->draw();
	}

	this->cam.end();
}

//--------------------------------------------------------------
glm::vec3 ofApp::make_point(float R, float r, float u, float v) {

	// 数学デッサン教室 描いて楽しむ数学たち　P.31

	u *= DEG_TO_RAD;
	v *= DEG_TO_RAD;

	auto x = (R + r * cos(u)) * cos(v);
	auto y = (R + r * cos(u)) * sin(v);
	auto z = r * sin(u);

	return glm::vec3(x, y, z);
}


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

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

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

153

154

155

156

157

158

159

160

161

162

163

164

165

166

167

168

169

170

171

172

173

174

175

176

177

178

179

180

181

182

183

184

185

186

187

188

189

190

191

192

193

194

195

196

197

198

199

200

201

202

203

204

205

206

207

208

209

210

211

212

213

214

215

216

217

218

219

220

221

#include "ofApp.h"

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

Actor::Actor(vector<glm::vec3>& location_list, vector<vector<int>>& next_index_list, vector<int>& destination_list) {

this->select_index = ofRandom(location_list.size());

while (true) {

auto itr = find(destination_list.begin(), destination_list.end(), this->select_index);

if (itr == destination_list.end()) {

destination_list.push_back(this->select_index);

break;

}

this->select_index = (this->select_index + 1) % location_list.size();

}

this->next_index = this->select_index;

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

}

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

void Actor::update(const int& frame_span, vector<glm::vec3>& location_list, vector<vector<int>>& next_index_list, vector<int>& destination_list) {

if (ofGetFrameNum() % frame_span == 0) {

auto tmp_index = this->select_index;

this->select_index = this->next_index;

int retry = next_index_list[this->select_index].size();

this->next_index = next_index_list[this->select_index][(int)ofRandom(next_index_list[this->select_index].size())];

while (--retry > 0) {

auto destination_itr = find(destination_list.begin(), destination_list.end(), this->next_index);

if (destination_itr == destination_list.end()) {

if (tmp_index != this->next_index) {

destination_list.push_back(this->next_index);

break;

}

this->next_index = next_index_list[this->select_index][(this->next_index + 1) % next_index_list[this->select_index].size()];

}

if (retry <= 0) {

destination_list.push_back(this->select_index);

this->next_index = this->select_index;

}

auto param = ofGetFrameNum() % frame_span;

auto distance = location_list[this->next_index] - location_list[this->select_index];

this->location = location_list[this->select_index] + distance / frame_span * param;

this->log.push_front(this->location);

while (this->log.size() > frame_span * 6) { this->log.pop_back(); }

this->mesh.clear();

for (int i = 0; i < this->log.size() - 1; i++) {

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

this->mesh.addColor(ofColor(this->color, ofMap(i, 0, this->log.size(), 255, 0)));

if (i > 0) {

this->mesh.addIndex(i);

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

}

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

void Actor::draw() {

this->mesh.draw();

}

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

glm::vec3 Actor::getLocation() {

return this->location;

}

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

deque<glm::vec3> Actor::getLog() {

return this->log;

}

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

void Actor::setColor(ofColor color) {

this->color = color;

}

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

ofColor Actor::getColor() {

return this->color;

}

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

void ofApp::setup() {

ofSetFrameRate(30);

ofSetWindowTitle("openFrameworks");

ofBackground(0);

ofSetLineWidth(1);

ofEnableDepthTest();

int span = 10;

for (int x = -150; x <= 150; x += span) {

for (int y = -150; y <= 150; y += span) {

for (int z = -150; z <= 150; z += span) {

bool x_flag = x < -100 || x > 100;

bool y_flag = y < -100 || y > 100;

bool z_flag = z < -100 || z > 100;

if (((x_flag || y_flag) && z_flag) || ((y_flag || z_flag) && x_flag)) {

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

}

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

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

int index = -1;

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

index++;

if (location == other) { continue; }

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

if (distance <= 10) {

next_index.push_back(index);

}

this->next_index_list.push_back(next_index);

}

ofColor color;

for (int i = 0; i < 650; i++) {

this->actor_list.push_back(make_unique<Actor>(this->location_list, this->next_index_list, this->destination_list));

color.setHsb(ofMap(i, 0, 500, 0, 255), 255, 255);

this->actor_list.back()->setColor(color);

}

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

void ofApp::update() {

int frame_span = 5;

int prev_index_size = 0;

if (ofGetFrameNum() % frame_span == 0) {

prev_index_size = this->destination_list.size();

}

for (auto& actor : this->actor_list) {

actor->update(frame_span, this->location_list, this->next_index_list, this->destination_list);

}

if (prev_index_size != 0) {

this->destination_list.erase(this->destination_list.begin(), this->destination_list.begin() + prev_index_size);

}

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

void ofApp::draw() {

this->cam.begin();

ofTranslate(-5, -5, 0);

this->cam.setPosition(glm::vec3(0, 0, 500));

ofRotateY(ofGetFrameNum());

for (auto& actor : this->actor_list) {

actor->draw();

}

this->cam.end();

}

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

glm::vec3 ofApp::make_point(float R, float r, float u, float v) {

// 数学デッサン教室描いて楽しむ数学たち　P.31

u *= DEG_TO_RAD;

v *= DEG_TO_RAD;

auto x = (R + r * cos(u)) * cos(v);

auto y = (R + r * cos(u)) * sin(v);

auto z = r * sin(u);

return glm::vec3(x, y, z);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20230716

[ほしいものリスト]
Amazon

[ Sponsor Link ]

2023年7月13日

right-angle shift. Draw by openFrameworks

[ Video ]

[ About ]
直角シフト。

[ 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);
};

#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);

};

#include "ofApp.h"

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

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

	ofBackground(39);
	ofSetLineWidth(3);
}

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

	ofSeedRandom(39);
}

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

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

	auto noise_seed = glm::vec2(ofRandom(1000), ofRandom(1000));
	for (int k = 0; k < 1; k++) {

		ofMesh mesh;
		vector<glm::vec3> right, left, frame;

		glm::vec3 last_location;
		float last_theta;

		for (int i = 0; i < 24; i++) {

			auto len = ofMap(ofNoise((ofGetFrameNum() + i + k * 10) * 0.04), 0, 1, 200, 500);
			auto next_len = ofMap(ofNoise((ofGetFrameNum() + i + 1 + k * 10) * 0.04), 0, 1, 200, 500);

			auto param = ofGetFrameNum() + i;
			auto next_param = ofGetFrameNum() + i + 1;

			auto location = glm::vec3(this->make_point(len, param), 0);
			auto next = glm::vec3(this->make_point(len, next_param), 0);

			auto direction = next - location;
			auto theta = atan2(direction.y, direction.x);

			right.push_back(location + glm::vec3(ofMap(i, 0, 24, 0, 4) * cos(theta + PI * 0.5), ofMap(i, 0, 24, 0, 4) * sin(theta + PI * 0.5), 0));
			left.push_back(location + glm::vec3(ofMap(i, 0, 24, 0, 4) * cos(theta - PI * 0.5), ofMap(i, 0, 24, 0, 4) * sin(theta - PI * 0.5), 0));

			last_location = location;
			last_theta = theta;
		}

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

			mesh.addVertex(left[i]);
			mesh.addVertex(right[i]);
		}


		for (int i = 0; i < mesh.getNumVertices() - 2; i += 2) {

			mesh.addIndex(i + 0); mesh.addIndex(i + 1); mesh.addIndex(i + 3);
			mesh.addIndex(i + 0); mesh.addIndex(i + 2); mesh.addIndex(i + 3);
		}

		mesh.addVertex(last_location);
		int index = mesh.getNumVertices();
		for (auto theta = last_theta - PI * 0.5; theta <= last_theta + PI * 0.5; theta += PI / 20) {

			mesh.addVertex(last_location + glm::vec3(4 * cos(theta), 4 * sin(theta), 0));
			frame.push_back(last_location + glm::vec3(4 * cos(theta), 4 * sin(theta), 0));
		}

		for (int i = index; i < mesh.getNumVertices() - 1; i++) {

			mesh.addIndex(index); mesh.addIndex(i + 0); mesh.addIndex(i + 1);
		}

		reverse(right.begin(), right.end());
		ofColor color;
		for (int i = 0; i < 10; i++) {

			ofRotate(36);

			color.setHsb(ofMap(i, 0, 10, 0, 255), 150, 255);
			ofSetColor(color);

			ofNoFill();
			ofBeginShape();
			ofVertices(frame);
			
			ofVertices(right);
			ofVertices(left);
			ofEndShape(false);
		}

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

			ofRotate(36);

			ofSetColor(39);
			mesh.draw();
		}
	}
}

//--------------------------------------------------------------
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());
}

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(30);

ofSetWindowTitle("openframeworks");

ofBackground(39);

ofSetLineWidth(3);

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

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

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

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

ofMesh mesh;

vector<glm::vec3> right, left, frame;

glm::vec3 last_location;

float last_theta;

for (int i = 0; i < 24; i++) {

auto len = ofMap(ofNoise((ofGetFrameNum() + i + k * 10) * 0.04), 0, 1, 200, 500);

auto next_len = ofMap(ofNoise((ofGetFrameNum() + i + 1 + k * 10) * 0.04), 0, 1, 200, 500);

auto param = ofGetFrameNum() + i;

auto next_param = ofGetFrameNum() + i + 1;

auto location = glm::vec3(this->make_point(len, param), 0);

auto next = glm::vec3(this->make_point(len, next_param), 0);

auto direction = next - location;

auto theta = atan2(direction.y, direction.x);

right.push_back(location + glm::vec3(ofMap(i, 0, 24, 0, 4) * cos(theta + PI * 0.5), ofMap(i, 0, 24, 0, 4) * sin(theta + PI * 0.5), 0));

left.push_back(location + glm::vec3(ofMap(i, 0, 24, 0, 4) * cos(theta - PI * 0.5), ofMap(i, 0, 24, 0, 4) * sin(theta - PI * 0.5), 0));

last_location = location;

last_theta = theta;

}

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

mesh.addVertex(left[i]);

mesh.addVertex(right[i]);

}

for (int i = 0; i < mesh.getNumVertices() - 2; i += 2) {

mesh.addIndex(i + 0); mesh.addIndex(i + 1); mesh.addIndex(i + 3);

mesh.addIndex(i + 0); mesh.addIndex(i + 2); mesh.addIndex(i + 3);

}

mesh.addVertex(last_location);

int index = mesh.getNumVertices();

for (auto theta = last_theta - PI * 0.5; theta <= last_theta + PI * 0.5; theta += PI / 20) {

mesh.addVertex(last_location + glm::vec3(4 * cos(theta), 4 * sin(theta), 0));

frame.push_back(last_location + glm::vec3(4 * cos(theta), 4 * sin(theta), 0));

}

for (int i = index; i < mesh.getNumVertices() - 1; i++) {

mesh.addIndex(index); mesh.addIndex(i + 0); mesh.addIndex(i + 1);

}

reverse(right.begin(), right.end());

ofColor color;

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

ofRotate(36);

color.setHsb(ofMap(i, 0, 10, 0, 255), 150, 255);

ofSetColor(color);

ofNoFill();

ofBeginShape();

ofVertices(frame);

ofVertices(right);

ofVertices(left);

ofEndShape(false);

}

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

ofRotate(36);

ofSetColor(39);

mesh.draw();

}

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

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/Insta20230713

[ほしいものリスト]
Amazon

[ Sponsor Link ]

2024年11月
月	火	水	木	金	土	日
				1	2	3
4	5	6	7	8	9	10
11	12	13	14	15	16	17
18	19	20	21	22	23	24
25	26	27	28	29	30