openFrameworks – ページ 469 – プログラミング de 落描き

2021年1月16日

Connecting circle to circle. Draw by openFrameworks

[ Movie ]

[ About ]
Connectiong circle to circle.

[ 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) {};

	ofMesh 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) {};

ofMesh line;

};

#include "ofApp.h"

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

	ofSetFrameRate(60);
	ofSetWindowTitle("openframeworks");

	ofBackground(239);
	ofSetColor(39);
	ofEnableDepthTest();

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

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

	int radius = 50;
	int outer_deg = 0;
	ofSeedRandom(39);

	this->line.clear();

	for (int x = 72; x <= ofGetWidth(); x += 144) {

		for (int y = 72; y <= ofGetWidth(); y += 144) {

			glm::vec3 noise_seed(ofRandom(1000), ofRandom(1000), ofRandom(1000));
			outer_deg += 90;
			for (int deg = 0; deg < 360; deg += 5) {

				this->line.addVertex(glm::vec3(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD), 0));
				this->line.addVertex(glm::vec3(radius * 0.5 * cos(deg * DEG_TO_RAD), radius * 0.5 * sin(deg * DEG_TO_RAD), 0));

				auto angle_x = ofMap(ofNoise(noise_seed.x, ofGetFrameNum() * 0.005), 0, 1, -PI, PI);
				auto angle_y = ofMap(ofNoise(noise_seed.y, ofGetFrameNum() * 0.005), 0, 1, -PI, PI);
				auto angle_z = ofMap(ofNoise(noise_seed.z, ofGetFrameNum() * 0.005), 0, 1, -PI, PI);
				auto rotation_x = glm::rotate(glm::mat4(), angle_x, glm::vec3(1, 0, 0));
				auto rotation_y = glm::rotate(glm::mat4(), angle_y, glm::vec3(0, 1, 0));
				auto rotation_z = glm::rotate(glm::mat4(), angle_z, glm::vec3(0, 0, 1));

				float outer_angle_x = outer_deg * DEG_TO_RAD;
				auto outer_rotationx_x = glm::rotate(glm::mat4(), outer_angle_x, glm::vec3(1, 0, 0));

				this->line.setVertex(this->line.getNumVertices() - 2,
					glm::vec3(x, y, 0) + glm::vec4(this->line.getVertex(this->line.getNumVertices() - 2), 0) * outer_rotationx_x);
				this->line.setVertex(this->line.getNumVertices() - 1,
					glm::vec3(x, y, 0) + glm::vec4(this->line.getVertex(this->line.getNumVertices() - 1), 0) * rotation_z * rotation_y * rotation_x);

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

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

	this->line.draw();

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

		ofDrawSphere(vertex, 1);
	}
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openframeworks");

ofBackground(239);

ofSetColor(39);

ofEnableDepthTest();

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

}

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

void ofApp::update() {

int radius = 50;

int outer_deg = 0;

ofSeedRandom(39);

this->line.clear();

for (int x = 72; x <= ofGetWidth(); x += 144) {

for (int y = 72; y <= ofGetWidth(); y += 144) {

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

outer_deg += 90;

for (int deg = 0; deg < 360; deg += 5) {

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

this->line.addVertex(glm::vec3(radius * 0.5 * cos(deg * DEG_TO_RAD), radius * 0.5 * sin(deg * DEG_TO_RAD), 0));

auto angle_x = ofMap(ofNoise(noise_seed.x, ofGetFrameNum() * 0.005), 0, 1, -PI, PI);

auto angle_y = ofMap(ofNoise(noise_seed.y, ofGetFrameNum() * 0.005), 0, 1, -PI, PI);

auto angle_z = ofMap(ofNoise(noise_seed.z, ofGetFrameNum() * 0.005), 0, 1, -PI, PI);

auto rotation_x = glm::rotate(glm::mat4(), angle_x, glm::vec3(1, 0, 0));

auto rotation_y = glm::rotate(glm::mat4(), angle_y, glm::vec3(0, 1, 0));

auto rotation_z = glm::rotate(glm::mat4(), angle_z, glm::vec3(0, 0, 1));

float outer_angle_x = outer_deg * DEG_TO_RAD;

auto outer_rotationx_x = glm::rotate(glm::mat4(), outer_angle_x, glm::vec3(1, 0, 0));

this->line.setVertex(this->line.getNumVertices() - 2,

glm::vec3(x, y, 0) + glm::vec4(this->line.getVertex(this->line.getNumVertices() - 2), 0) * outer_rotationx_x);

this->line.setVertex(this->line.getNumVertices() - 1,

glm::vec3(x, y, 0) + glm::vec4(this->line.getVertex(this->line.getNumVertices() - 1), 0) * rotation_z * rotation_y * rotation_x);

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

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

}

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

void ofApp::draw() {

this->line.draw();

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

ofDrawSphere(vertex, 1);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20210116

[ほしいものリスト]
Amazon

[ Sponsor Link ]

2021年1月15日2021年1月15日

The Prismatic Sun. Draw by openFrameworks

[ Video ]

[ About ]
The Prismatic Sun.

[ Source ]

#pragma once
#include "ofMain.h"

class ofApp : public ofBaseApp {

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

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

	ofMesh mesh;
};

#pragma once

#include "ofMain.h"

class ofApp : public ofBaseApp {

public:

void setup();

void update();

void draw();

void keyPressed(int key) {};

void keyReleased(int key) {};

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

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

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

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

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

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

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

void dragEvent(ofDragInfo dragInfo) {};

void gotMessage(ofMessage msg) {};

ofMesh mesh;

};

#include "ofApp.h"

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

	ofSetFrameRate(60);
	ofSetWindowTitle("openframeworks");

	ofBackground(239);
	ofSetCircleResolution(60);
}

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

	this->mesh.clear();
	
	int deg_span = 6;
	ofColor color;
	for (int deg = 0; deg < 360; deg += deg_span * 2) {

		for (int radius = 50; radius < 720; radius += 15) {

			int hue = ((int)ofMap(deg, 0, 360, 0, 255) + radius / 2 - ofGetFrameNum()) % 255;
			color.setHsb(hue, 255, 255);

			this->mesh.addVertex(glm::vec3(radius * cos((deg + deg_span * 0.5) * DEG_TO_RAD), radius * sin((deg + deg_span * 0.5) * DEG_TO_RAD), 0));
			this->mesh.addVertex(glm::vec3(radius * cos((deg - deg_span * 0.5) * DEG_TO_RAD), radius * sin((deg - deg_span * 0.5) * DEG_TO_RAD), 0));
			this->mesh.addColor(color);
			this->mesh.addColor(color);

			if (radius > 50) {

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

		}
	}


	this->mesh.addVertex(glm::vec3());
	this->mesh.addColor(ofColor(255));
	int center_index = this->mesh.getNumVertices() - 1;
	for (int deg = 0; deg < 360; deg += deg_span) {

		int hue = ((int)ofMap(deg, 0, 360, 0, 255) - ofGetFrameNum()) % 255;
		color.setHsb(hue, 255, 255);

		this->mesh.addVertex(glm::vec3(35 * cos((deg + deg_span) * DEG_TO_RAD), 35 * sin((deg + deg_span) * DEG_TO_RAD), 0));
		this->mesh.addVertex(glm::vec3(35 * cos((deg - deg_span) * DEG_TO_RAD), 35 * sin((deg - deg_span) * DEG_TO_RAD), 0));

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

		this->mesh.addIndex(center_index);
		this->mesh.addIndex(this->mesh.getNumVertices() - 2);
		this->mesh.addIndex(this->mesh.getNumVertices() - 1);

		
	}
}

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

	ofTranslate(ofGetWindowSize() * 0.5);

	this->mesh.draw();

	ofSetColor(239);
	ofFill();
	ofDrawRectangle(glm::vec2(ofGetWidth() * -0.5, ofGetHeight() * -0.5), ofGetWidth(), 30);
	ofDrawRectangle(glm::vec2(ofGetWidth() * -0.5, ofGetHeight() *  0.5), ofGetWidth(), -30);
	ofDrawRectangle(glm::vec2(ofGetWidth() * -0.5, ofGetHeight() * -0.5), 30, ofGetHeight());
	ofDrawRectangle(glm::vec2(ofGetWidth() * 0.5, ofGetHeight() * -0.5), -30, ofGetHeight());
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openframeworks");

ofBackground(239);

ofSetCircleResolution(60);

}

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

void ofApp::update() {

this->mesh.clear();

int deg_span = 6;

ofColor color;

for (int deg = 0; deg < 360; deg += deg_span * 2) {

for (int radius = 50; radius < 720; radius += 15) {

int hue = ((int)ofMap(deg, 0, 360, 0, 255) + radius / 2 - ofGetFrameNum()) % 255;

color.setHsb(hue, 255, 255);

this->mesh.addVertex(glm::vec3(radius * cos((deg + deg_span * 0.5) * DEG_TO_RAD), radius * sin((deg + deg_span * 0.5) * DEG_TO_RAD), 0));

this->mesh.addVertex(glm::vec3(radius * cos((deg - deg_span * 0.5) * DEG_TO_RAD), radius * sin((deg - deg_span * 0.5) * DEG_TO_RAD), 0));

this->mesh.addColor(color);

if (radius > 50) {

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

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

}

this->mesh.addVertex(glm::vec3());

this->mesh.addColor(ofColor(255));

int center_index = this->mesh.getNumVertices() - 1;

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

int hue = ((int)ofMap(deg, 0, 360, 0, 255) - ofGetFrameNum()) % 255;

color.setHsb(hue, 255, 255);

this->mesh.addVertex(glm::vec3(35 * cos((deg + deg_span) * DEG_TO_RAD), 35 * sin((deg + deg_span) * DEG_TO_RAD), 0));

this->mesh.addVertex(glm::vec3(35 * cos((deg - deg_span) * DEG_TO_RAD), 35 * sin((deg - deg_span) * DEG_TO_RAD), 0));

this->mesh.addColor(color);

this->mesh.addIndex(center_index);

this->mesh.addIndex(this->mesh.getNumVertices() - 2);

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

}

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

void ofApp::draw() {

ofTranslate(ofGetWindowSize() * 0.5);

this->mesh.draw();

ofSetColor(239);

ofFill();

ofDrawRectangle(glm::vec2(ofGetWidth() * -0.5, ofGetHeight() * -0.5), ofGetWidth(), 30);

ofDrawRectangle(glm::vec2(ofGetWidth() * -0.5, ofGetHeight() * 0.5), ofGetWidth(), -30);

ofDrawRectangle(glm::vec2(ofGetWidth() * -0.5, ofGetHeight() * -0.5), 30, ofGetHeight());

ofDrawRectangle(glm::vec2(ofGetWidth() * 0.5, ofGetHeight() * -0.5), -30, ofGetHeight());

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20210115/

[ほしいものリスト]
Amazon

[ Sponsor Link ]

2021年1月14日2021年1月14日

Random walk of Colors. Draw by openFrameworks

[ Video ]

[ About ]
色のランダムウォーク。

Random walk of Colors.

[ 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) {};

	int frame_span;
	int size;
	vector<glm::vec2> location_list;
	vector<ofColor> base_color_list;

	vector<int> current_index_list;
	vector<int> next_index_list;
	vector<ofColor> color_list;
};

#pragma once

#include "ofMain.h"

class ofApp : public ofBaseApp {

public:

void setup();

void update();

void draw();

void keyPressed(int key) {};

void keyReleased(int key) {};

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

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

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

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

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

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

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

void dragEvent(ofDragInfo dragInfo) {};

void gotMessage(ofMessage msg) {};

int frame_span;

int size;

vector<glm::vec2> location_list;

vector<ofColor> base_color_list;

vector<int> current_index_list;

vector<int> next_index_list;

vector<ofColor> color_list;

};

#include "ofApp.h"

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

	ofSetFrameRate(60);
	ofSetWindowTitle("openframeworks");

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

	this->frame_span = 30;
	this->size = 15;
	while (this->location_list.size() < 120) {

		auto location = glm::vec2(ofRandom(80, ofGetWidth() - 80), ofRandom(80, ofGetHeight() - 80));
		bool flag = true;
		for (int i = 0; i < this->location_list.size(); i++) {

			if (glm::distance(location, this->location_list[i]) < this->size * 3) {

				flag = false;
				break;
			}
		}

		if (flag) {

			this->location_list.push_back(location);
		}
	}

	ofColor color;
	vector<int> hex_list = { 0xf44336, 0x9C27B0, 0x3F51B5, 0x03A9F4, 0x009688, 0x8BC34A, 0xFFEB3B, 0xFF9800 };
	for (auto hex : hex_list) {

		color.setHex(hex);
		this->base_color_list.push_back(color);
	}

	for (int i = 0; i < 90; i++) {

		this->current_index_list.push_back(0);
		this->next_index_list.push_back(ofRandom(this->location_list.size()));
		this->color_list.push_back(this->base_color_list[ofRandom(this->base_color_list.size())]);
	}
}

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

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

		if (ofGetFrameNum() % (this->frame_span * 2) == 0) {

			int next_index = this->next_index_list[i];
			int current_index = next_index;

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

				if (current_index == location_index) { continue; }
				if (glm::distance(this->location_list[current_index], this->location_list[location_index]) < this->size * 5) {

					near_indexes.push_back(location_index);
				}
			}

			if (near_indexes.size() > 0) {

				next_index = near_indexes[ofRandom(near_indexes.size())];
			}

			this->current_index_list[i] = current_index;
			this->next_index_list[i] = next_index;
		}
	}
}

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

	int frame_param = ofGetFrameNum() % this->frame_span;

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

		ofSetColor(this->color_list[i]);

		int current_index = this->current_index_list[i];
		int next_index = this->next_index_list[i];

		auto angle_current = std::atan2(this->location_list[next_index].y - this->location_list[current_index].y, this->location_list[next_index].x - this->location_list[current_index].x);
		auto satellite_point_current = this->location_list[current_index] + glm::vec2(this->size * cos(angle_current), this->size * sin(angle_current));
		auto angle_next = std::atan2(this->location_list[current_index].y - this->location_list[next_index].y, this->location_list[current_index].x - this->location_list[next_index].x);
		auto satellite_point_next = this->location_list[next_index] + glm::vec2(this->size * cos(angle_next), this->size * sin(angle_next));

		if (ofGetFrameNum() % (this->frame_span * 2) < this->frame_span) {

			ofSetLineWidth(3);
			auto distance = glm::distance(satellite_point_next, satellite_point_current);
			distance = ofMap(frame_param, 0, this->frame_span, 0, distance);
			auto direction = satellite_point_next - satellite_point_current;
			ofDrawLine(satellite_point_current, satellite_point_current + glm::normalize(direction) * distance);

			ofSetLineWidth(1.5);
			for (int location_index = 0; location_index < this->location_list.size(); location_index++) {

				ofNoFill();
				ofSetColor(255);
				ofDrawCircle(this->location_list[location_index], this->size);

				if (current_index == location_index) {

					int deg_param = ofMap(frame_param, 0, this->frame_span, 180, 0);
					float start_deg = angle_current * RAD_TO_DEG;

					ofFill();
					ofSetColor(this->color_list[i]);
					ofBeginShape();
					for (int deg = start_deg; deg <= start_deg + deg_param; deg++) {

						ofVertex(this->location_list[location_index] + glm::vec2(this->size * cos(deg * DEG_TO_RAD), this->size * sin(deg * DEG_TO_RAD)));
					}
					for (int deg = start_deg - deg_param; deg <= start_deg; deg++) {

						ofVertex(this->location_list[location_index] + glm::vec2(this->size * cos(deg * DEG_TO_RAD), this->size * sin(deg * DEG_TO_RAD)));
					}

					ofEndShape();
				}

				if (next_index == location_index) {

					int deg_param = ofMap(frame_param, 0, this->frame_span, 0, 90);
					float start_deg = angle_next * RAD_TO_DEG;

					ofFill();
					ofSetColor(this->color_list[i]);
					ofBeginShape();
					for (int deg = start_deg; deg <= start_deg + deg_param; deg++) {

						ofVertex(this->location_list[location_index] + glm::vec2(this->size * cos(deg * DEG_TO_RAD), this->size * sin(deg * DEG_TO_RAD)));
					}
					for (int deg = start_deg - deg_param; deg <= start_deg; deg++) {

						ofVertex(this->location_list[location_index] + glm::vec2(this->size * cos(deg * DEG_TO_RAD), this->size * sin(deg * DEG_TO_RAD)));
					}

					ofEndShape();
				}
			}
		}
		else {

			ofSetLineWidth(3);
			auto distance = glm::distance(satellite_point_next, satellite_point_current);
			distance = ofMap(frame_param, 0, this->frame_span, distance, 0);
			auto direction = satellite_point_next - satellite_point_current;
			ofDrawLine(satellite_point_next, satellite_point_next - glm::normalize(direction) * distance);

			ofSetLineWidth(1.5);
			for (int location_index = 0; location_index < this->location_list.size(); location_index++) {

				ofSetColor(255);
				ofNoFill();
				ofDrawCircle(this->location_list[location_index], this->size);

				if (next_index == location_index) {

					int deg_param = ofMap(frame_param, 0, this->frame_span, 90, 180);
					float start_deg = angle_next * RAD_TO_DEG;

					ofFill();
					ofSetColor(this->color_list[i]);
					ofBeginShape();
					for (int deg = start_deg; deg <= start_deg + deg_param; deg++) {

						ofVertex(this->location_list[location_index] + glm::vec2(this->size * cos(deg * DEG_TO_RAD), this->size * sin(deg * DEG_TO_RAD)));
					}
					for (int deg = start_deg - deg_param; deg <= start_deg; deg++) {

						ofVertex(this->location_list[location_index] + glm::vec2(this->size * cos(deg * DEG_TO_RAD), this->size * sin(deg * DEG_TO_RAD)));
					}

					ofEndShape();
				}
			}
		}
	}
}

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openframeworks");

ofBackground(0);

ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);

this->frame_span = 30;

this->size = 15;

while (this->location_list.size() < 120) {

auto location = glm::vec2(ofRandom(80, ofGetWidth() - 80), ofRandom(80, ofGetHeight() - 80));

bool flag = true;

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

if (glm::distance(location, this->location_list[i]) < this->size * 3) {

flag = false;

break;

}

if (flag) {

this->location_list.push_back(location);

}

ofColor color;

vector<int> hex_list = { 0xf44336, 0x9C27B0, 0x3F51B5, 0x03A9F4, 0x009688, 0x8BC34A, 0xFFEB3B, 0xFF9800 };

for (auto hex : hex_list) {

color.setHex(hex);

this->base_color_list.push_back(color);

}

for (int i = 0; i < 90; i++) {

this->current_index_list.push_back(0);

this->next_index_list.push_back(ofRandom(this->location_list.size()));

this->color_list.push_back(this->base_color_list[ofRandom(this->base_color_list.size())]);

}

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

void ofApp::update() {

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

if (ofGetFrameNum() % (this->frame_span * 2) == 0) {

int next_index = this->next_index_list[i];

int current_index = next_index;

vector<int> near_indexes;

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

if (current_index == location_index) { continue; }

if (glm::distance(this->location_list[current_index], this->location_list[location_index]) < this->size * 5) {

near_indexes.push_back(location_index);

}

if (near_indexes.size() > 0) {

next_index = near_indexes[ofRandom(near_indexes.size())];

}

this->current_index_list[i] = current_index;

this->next_index_list[i] = next_index;

}

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

void ofApp::draw() {

int frame_param = ofGetFrameNum() % this->frame_span;

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

ofSetColor(this->color_list[i]);

int current_index = this->current_index_list[i];

int next_index = this->next_index_list[i];

auto angle_current = std::atan2(this->location_list[next_index].y - this->location_list[current_index].y, this->location_list[next_index].x - this->location_list[current_index].x);

auto satellite_point_current = this->location_list[current_index] + glm::vec2(this->size * cos(angle_current), this->size * sin(angle_current));

auto angle_next = std::atan2(this->location_list[current_index].y - this->location_list[next_index].y, this->location_list[current_index].x - this->location_list[next_index].x);

auto satellite_point_next = this->location_list[next_index] + glm::vec2(this->size * cos(angle_next), this->size * sin(angle_next));

if (ofGetFrameNum() % (this->frame_span * 2) < this->frame_span) {

ofSetLineWidth(3);

auto distance = glm::distance(satellite_point_next, satellite_point_current);

distance = ofMap(frame_param, 0, this->frame_span, 0, distance);

auto direction = satellite_point_next - satellite_point_current;

ofDrawLine(satellite_point_current, satellite_point_current + glm::normalize(direction) * distance);

ofSetLineWidth(1.5);

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

ofNoFill();

ofSetColor(255);

ofDrawCircle(this->location_list[location_index], this->size);

if (current_index == location_index) {

int deg_param = ofMap(frame_param, 0, this->frame_span, 180, 0);

float start_deg = angle_current * RAD_TO_DEG;

ofFill();

ofSetColor(this->color_list[i]);

ofBeginShape();

for (int deg = start_deg; deg <= start_deg + deg_param; deg++) {

ofVertex(this->location_list[location_index] + glm::vec2(this->size * cos(deg * DEG_TO_RAD), this->size * sin(deg * DEG_TO_RAD)));

}

for (int deg = start_deg - deg_param; deg <= start_deg; deg++) {

ofVertex(this->location_list[location_index] + glm::vec2(this->size * cos(deg * DEG_TO_RAD), this->size * sin(deg * DEG_TO_RAD)));

}

ofEndShape();

}

if (next_index == location_index) {

int deg_param = ofMap(frame_param, 0, this->frame_span, 0, 90);

float start_deg = angle_next * RAD_TO_DEG;

ofFill();

ofSetColor(this->color_list[i]);

ofBeginShape();

for (int deg = start_deg; deg <= start_deg + deg_param; deg++) {

ofVertex(this->location_list[location_index] + glm::vec2(this->size * cos(deg * DEG_TO_RAD), this->size * sin(deg * DEG_TO_RAD)));

}

for (int deg = start_deg - deg_param; deg <= start_deg; deg++) {

ofVertex(this->location_list[location_index] + glm::vec2(this->size * cos(deg * DEG_TO_RAD), this->size * sin(deg * DEG_TO_RAD)));

}

ofEndShape();

}

else {

ofSetLineWidth(3);

auto distance = glm::distance(satellite_point_next, satellite_point_current);

distance = ofMap(frame_param, 0, this->frame_span, distance, 0);

auto direction = satellite_point_next - satellite_point_current;

ofDrawLine(satellite_point_next, satellite_point_next - glm::normalize(direction) * distance);

ofSetLineWidth(1.5);

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

ofSetColor(255);

ofNoFill();

ofDrawCircle(this->location_list[location_index], this->size);

if (next_index == location_index) {

int deg_param = ofMap(frame_param, 0, this->frame_span, 90, 180);

float start_deg = angle_next * RAD_TO_DEG;

ofFill();

ofSetColor(this->color_list[i]);

ofBeginShape();

for (int deg = start_deg; deg <= start_deg + deg_param; deg++) {

ofVertex(this->location_list[location_index] + glm::vec2(this->size * cos(deg * DEG_TO_RAD), this->size * sin(deg * DEG_TO_RAD)));

}

for (int deg = start_deg - deg_param; deg <= start_deg; deg++) {

ofVertex(this->location_list[location_index] + glm::vec2(this->size * cos(deg * DEG_TO_RAD), this->size * sin(deg * DEG_TO_RAD)));

}

ofEndShape();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20210114

[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