2024年2月 – ページ 9 – プログラミング de 落描き

2024年2月5日

Pink tunnel.

[ Video ]

[ About ]
ピンクトンネル。

[ 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 setRingToMesh(ofMesh& face_target, ofMesh& frame_target, glm::vec3 location, float radius, float width, float height, int deg_start, int deg_end);

	ofEasyCam cam;
	ofMesh face, frame;
};

#pragma once

#include "ofMain.h"

class ofApp : public ofBaseApp {

public:

void setup();

void update();

void draw();

void keyPressed(int key) {};

void keyReleased(int key) {};

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

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

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

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

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

void dragEvent(ofDragInfo dragInfo) {};

void gotMessage(ofMessage msg) {};

void setRingToMesh(ofMesh& face_target, ofMesh& frame_target, glm::vec3 location, float radius, float width, float height, int deg_start, int deg_end);

ofEasyCam cam;

ofMesh face, frame;

};

#include "ofApp.h"

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

	ofSetFrameRate(25);
	ofSetWindowTitle("openFrameworks");

	ofBackground(239);
	ofEnableDepthTest();

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

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

	ofSeedRandom(39);

	this->face.clear();
	this->frame.clear();

	auto radius = 300;
	auto noise_step = 0.05;

	for (int z = -900; z <= 900; z += 10) {

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

			auto noise_value = ofNoise(glm::vec4(radius * cos(deg * DEG_TO_RAD) * noise_step, radius * sin(deg * DEG_TO_RAD) * noise_step, z * noise_step, ofGetFrameNum() * 0.01));
			if (noise_value < 0.45) {

				deg_end = deg;

				if (deg == 0) {

					while (true) {

						tmp_deg -= 1;
						auto tmp_noise_value = ofNoise(glm::vec4(radius * cos(tmp_deg * DEG_TO_RAD) * noise_step, radius * sin(tmp_deg * DEG_TO_RAD) * noise_step, z * noise_step, ofGetFrameNum() * 0.01));
						if (tmp_noise_value > 0.45 || tmp_deg <= -360) { break; }
						deg_start = tmp_deg;
					}
				}
			}
			else {

				if (deg_start < deg_end) {

					this->setRingToMesh(this->face, this->frame, glm::vec3(0, 0, z + 8), radius, 5, 9, deg_start, deg_end);
				}

				deg_start = deg;
				deg_end = deg;
			}
		}

		if (deg_start != deg_end) {

			this->setRingToMesh(this->face, this->frame, glm::vec3(0, 0, z + 8), radius, 5, 9, deg_start, deg_end);
		}
	}
}

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

	this->cam.begin();
	ofRotateX(0);

	ofSetColor(39);
	this->face.draw();

	ofSetColor(239, 39, 139);
	this->frame.drawWireframe();

	this->cam.end();

	/*
	int start = 220;
	if (ofGetFrameNum() > start) {

		ostringstream os;
		os << setw(4) << setfill('0') << ofGetFrameNum() - start;
		ofImage image;
		image.grabScreen(0, 0, ofGetWidth(), ofGetHeight());
		image.saveImage("image/cap/img_" + os.str() + ".jpg");
		if (ofGetFrameNum() - start >= 25 * 20) {

			std::exit(1);
		}
	}
	*/
}

//--------------------------------------------------------------
void ofApp::setRingToMesh(ofMesh& face_target, ofMesh& frame_target, glm::vec3 location, float radius, float width, float height, int deg_start, int deg_end) {

	if (deg_start == deg_end) { return; }

	int index = face_target.getNumVertices();

	for (int deg = deg_start; deg <= deg_end; deg += 1) {

		auto face_index = face_target.getNumVertices();

		vector<glm::vec3> vertices;
		vertices.push_back(glm::vec3((radius + width * 0.5) * cos(deg * DEG_TO_RAD), (radius + width * 0.5) * sin(deg * DEG_TO_RAD), height * -0.5));
		vertices.push_back(glm::vec3((radius + width * 0.5) * cos((deg + 1) * DEG_TO_RAD), (radius + width * 0.5) * sin((deg + 1) * DEG_TO_RAD), height * -0.5));
		vertices.push_back(glm::vec3((radius + width * 0.5) * cos((deg + 1) * DEG_TO_RAD), (radius + width * 0.5) * sin((deg + 1) * DEG_TO_RAD), height * 0.5));
		vertices.push_back(glm::vec3((radius + width * 0.5) * cos(deg * DEG_TO_RAD), (radius + width * 0.5) * sin(deg * DEG_TO_RAD), height * 0.5));

		vertices.push_back(glm::vec3((radius - width * 0.5) * cos(deg * DEG_TO_RAD), (radius - width * 0.5) * sin(deg * DEG_TO_RAD), height * -0.5));
		vertices.push_back(glm::vec3((radius - width * 0.5) * cos((deg + 1) * DEG_TO_RAD), (radius - width * 0.5) * sin((deg + 1) * DEG_TO_RAD), height * -0.5));
		vertices.push_back(glm::vec3((radius - width * 0.5) * cos((deg + 1) * DEG_TO_RAD), (radius - width * 0.5) * sin((deg + 1) * DEG_TO_RAD), height * 0.5));
		vertices.push_back(glm::vec3((radius - width * 0.5) * cos(deg * DEG_TO_RAD), (radius - width * 0.5) * sin(deg * DEG_TO_RAD), height * 0.5));

		for (auto& vertex : vertices) {

			vertex += location;
		}

		face_target.addVertices(vertices);

		face_target.addIndex(face_index + 0); face_target.addIndex(face_index + 1); face_target.addIndex(face_index + 2);
		face_target.addIndex(face_index + 0); face_target.addIndex(face_index + 2); face_target.addIndex(face_index + 3);

		face_target.addIndex(face_index + 4); face_target.addIndex(face_index + 5); face_target.addIndex(face_index + 6);
		face_target.addIndex(face_index + 4); face_target.addIndex(face_index + 6); face_target.addIndex(face_index + 7);

		face_target.addIndex(face_index + 0); face_target.addIndex(face_index + 4); face_target.addIndex(face_index + 5);
		face_target.addIndex(face_index + 0); face_target.addIndex(face_index + 5); face_target.addIndex(face_index + 1);

		face_target.addIndex(face_index + 3); face_target.addIndex(face_index + 7); face_target.addIndex(face_index + 6);
		face_target.addIndex(face_index + 3); face_target.addIndex(face_index + 6); face_target.addIndex(face_index + 2);

		auto frame_index = frame_target.getNumVertices();

		frame_target.addVertices(vertices);

		frame_target.addIndex(frame_index + 0); frame_target.addIndex(frame_index + 1);
		frame_target.addIndex(frame_index + 2); frame_target.addIndex(frame_index + 3);
		frame_target.addIndex(frame_index + 4); frame_target.addIndex(frame_index + 5);
		frame_target.addIndex(frame_index + 6); frame_target.addIndex(frame_index + 7);
	}

	face_target.addIndex(index + 0); face_target.addIndex(index + 3); face_target.addIndex(index + 7);
	face_target.addIndex(index + 0); face_target.addIndex(index + 7); face_target.addIndex(index + 4);

	frame_target.addIndex(index + 0); frame_target.addIndex(index + 3);
	frame_target.addIndex(index + 0); frame_target.addIndex(index + 4);
	frame_target.addIndex(index + 7); frame_target.addIndex(index + 3);
	frame_target.addIndex(index + 7); frame_target.addIndex(index + 4);

	index = frame_target.getNumVertices() - 8;

	face_target.addIndex(index + 1); face_target.addIndex(index + 2); face_target.addIndex(index + 6);
	face_target.addIndex(index + 1); face_target.addIndex(index + 6); face_target.addIndex(index + 5);

	frame_target.addIndex(index + 1); frame_target.addIndex(index + 2);
	frame_target.addIndex(index + 1); frame_target.addIndex(index + 5);
	frame_target.addIndex(index + 6); frame_target.addIndex(index + 2);
	frame_target.addIndex(index + 6); frame_target.addIndex(index + 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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(25);

ofSetWindowTitle("openFrameworks");

ofBackground(239);

ofEnableDepthTest();

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

}

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

void ofApp::update() {

ofSeedRandom(39);

this->face.clear();

this->frame.clear();

auto radius = 300;

auto noise_step = 0.05;

for (int z = -900; z <= 900; z += 10) {

int deg_start = 0;

int deg_end = 0;

int tmp_deg = 0;

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

auto noise_value = ofNoise(glm::vec4(radius * cos(deg * DEG_TO_RAD) * noise_step, radius * sin(deg * DEG_TO_RAD) * noise_step, z * noise_step, ofGetFrameNum() * 0.01));

if (noise_value < 0.45) {

deg_end = deg;

if (deg == 0) {

while (true) {

tmp_deg -= 1;

auto tmp_noise_value = ofNoise(glm::vec4(radius * cos(tmp_deg * DEG_TO_RAD) * noise_step, radius * sin(tmp_deg * DEG_TO_RAD) * noise_step, z * noise_step, ofGetFrameNum() * 0.01));

if (tmp_noise_value > 0.45 || tmp_deg <= -360) { break; }

deg_start = tmp_deg;

}

else {

if (deg_start < deg_end) {

this->setRingToMesh(this->face, this->frame, glm::vec3(0, 0, z + 8), radius, 5, 9, deg_start, deg_end);

}

deg_start = deg;

deg_end = deg;

}

if (deg_start != deg_end) {

this->setRingToMesh(this->face, this->frame, glm::vec3(0, 0, z + 8), radius, 5, 9, deg_start, deg_end);

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateX(0);

ofSetColor(39);

this->face.draw();

ofSetColor(239, 39, 139);

this->frame.drawWireframe();

this->cam.end();

int start = 220;

if (ofGetFrameNum() > start) {

ostringstream os;

os << setw(4) << setfill('0') << ofGetFrameNum() - start;

ofImage image;

image.grabScreen(0, 0, ofGetWidth(), ofGetHeight());

image.saveImage("image/cap/img_" + os.str() + ".jpg");

if (ofGetFrameNum() - start >= 25 * 20) {

std::exit(1);

}

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

void ofApp::setRingToMesh(ofMesh& face_target, ofMesh& frame_target, glm::vec3 location, float radius, float width, float height, int deg_start, int deg_end) {

if (deg_start == deg_end) { return; }

int index = face_target.getNumVertices();

for (int deg = deg_start; deg <= deg_end; deg += 1) {

auto face_index = face_target.getNumVertices();

vector<glm::vec3> vertices;

vertices.push_back(glm::vec3((radius + width * 0.5) * cos(deg * DEG_TO_RAD), (radius + width * 0.5) * sin(deg * DEG_TO_RAD), height * -0.5));

vertices.push_back(glm::vec3((radius + width * 0.5) * cos((deg + 1) * DEG_TO_RAD), (radius + width * 0.5) * sin((deg + 1) * DEG_TO_RAD), height * -0.5));

vertices.push_back(glm::vec3((radius + width * 0.5) * cos((deg + 1) * DEG_TO_RAD), (radius + width * 0.5) * sin((deg + 1) * DEG_TO_RAD), height * 0.5));

vertices.push_back(glm::vec3((radius + width * 0.5) * cos(deg * DEG_TO_RAD), (radius + width * 0.5) * sin(deg * DEG_TO_RAD), height * 0.5));

vertices.push_back(glm::vec3((radius - width * 0.5) * cos(deg * DEG_TO_RAD), (radius - width * 0.5) * sin(deg * DEG_TO_RAD), height * -0.5));

vertices.push_back(glm::vec3((radius - width * 0.5) * cos((deg + 1) * DEG_TO_RAD), (radius - width * 0.5) * sin((deg + 1) * DEG_TO_RAD), height * -0.5));

vertices.push_back(glm::vec3((radius - width * 0.5) * cos((deg + 1) * DEG_TO_RAD), (radius - width * 0.5) * sin((deg + 1) * DEG_TO_RAD), height * 0.5));

vertices.push_back(glm::vec3((radius - width * 0.5) * cos(deg * DEG_TO_RAD), (radius - width * 0.5) * sin(deg * DEG_TO_RAD), height * 0.5));

for (auto& vertex : vertices) {

vertex += location;

}

face_target.addVertices(vertices);

face_target.addIndex(face_index + 0); face_target.addIndex(face_index + 1); face_target.addIndex(face_index + 2);

face_target.addIndex(face_index + 0); face_target.addIndex(face_index + 2); face_target.addIndex(face_index + 3);

face_target.addIndex(face_index + 4); face_target.addIndex(face_index + 5); face_target.addIndex(face_index + 6);

face_target.addIndex(face_index + 4); face_target.addIndex(face_index + 6); face_target.addIndex(face_index + 7);

face_target.addIndex(face_index + 0); face_target.addIndex(face_index + 4); face_target.addIndex(face_index + 5);

face_target.addIndex(face_index + 0); face_target.addIndex(face_index + 5); face_target.addIndex(face_index + 1);

face_target.addIndex(face_index + 3); face_target.addIndex(face_index + 7); face_target.addIndex(face_index + 6);

face_target.addIndex(face_index + 3); face_target.addIndex(face_index + 6); face_target.addIndex(face_index + 2);

auto frame_index = frame_target.getNumVertices();

frame_target.addVertices(vertices);

frame_target.addIndex(frame_index + 0); frame_target.addIndex(frame_index + 1);

frame_target.addIndex(frame_index + 2); frame_target.addIndex(frame_index + 3);

frame_target.addIndex(frame_index + 4); frame_target.addIndex(frame_index + 5);

frame_target.addIndex(frame_index + 6); frame_target.addIndex(frame_index + 7);

}

face_target.addIndex(index + 0); face_target.addIndex(index + 3); face_target.addIndex(index + 7);

face_target.addIndex(index + 0); face_target.addIndex(index + 7); face_target.addIndex(index + 4);

frame_target.addIndex(index + 0); frame_target.addIndex(index + 3);

frame_target.addIndex(index + 0); frame_target.addIndex(index + 4);

frame_target.addIndex(index + 7); frame_target.addIndex(index + 3);

frame_target.addIndex(index + 7); frame_target.addIndex(index + 4);

index = frame_target.getNumVertices() - 8;

face_target.addIndex(index + 1); face_target.addIndex(index + 2); face_target.addIndex(index + 6);

face_target.addIndex(index + 1); face_target.addIndex(index + 6); face_target.addIndex(index + 5);

frame_target.addIndex(index + 1); frame_target.addIndex(index + 2);

frame_target.addIndex(index + 1); frame_target.addIndex(index + 5);

frame_target.addIndex(index + 6); frame_target.addIndex(index + 2);

frame_target.addIndex(index + 6); frame_target.addIndex(index + 5);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20240205

[ほしいものリスト]
Amazon

[ Sponsor Link ]

2024年2月4日

Screw.

[ Video ]

[ About ]
ねじる。

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

	ofEasyCam cam;
	float noise_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::vec3 make_point(float R, float r, float u, float v);

ofEasyCam cam;

float noise_param;

};

#include "ofApp.h"

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

	ofSetFrameRate(25);
	ofSetWindowTitle("openframeworks");

	ofBackground(39);
	ofSetLineWidth(2);
	ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);

	this->noise_param = ofRandom(1000);
}

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

	ofSeedRandom(39);

	this->noise_param += 0.00005;
}

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

	this->cam.begin();

	float v_span = 1;
	float u_span = 90;
	int R = 230;
	int r = 70;
	
	ofColor color;
	float noise_seed = ofRandom(1000);
	float noise_span = ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.008), 0, 1, 0, 4);
	for (float v = 0; v < 360; v += v_span) {

		int u_start = ofMap(ofNoise(noise_seed, cos(v * DEG_TO_RAD) * noise_span, sin(v * DEG_TO_RAD) * noise_span, this->noise_param), 0, 1, -360, 360);
		int next_u = ofMap(ofNoise(noise_seed, cos((v + v_span) * DEG_TO_RAD) * noise_span, sin((v + v_span) * DEG_TO_RAD) * noise_span, this->noise_param), 0, 1, -360, 360);
		for (float u = u_start; u < u_start + 360; u += u_span) {

			color.setHsb(ofMap(u, u_start, u_start + 360, 0, 255), 200, 255);
			ofSetColor(color);

			ofDrawLine(this->make_point(R, r, u, v), this->make_point(R, r, next_u, v + v_span));
			next_u += u_span;
		}
	}

	this->cam.end();

	/*
	int start = 220;
	if (ofGetFrameNum() > start) {

		ostringstream os;
		os << setw(4) << setfill('0') << ofGetFrameNum() - start;
		ofImage image;
		image.grabScreen(0, 0, ofGetWidth(), ofGetHeight());
		image.saveImage("image/cap/img_" + os.str() + ".jpg");
		if (ofGetFrameNum() - start >= 25 * 20) {

			std::exit(1);
		}
	}
	*/
}

//--------------------------------------------------------------
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, 0);
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(25);

ofSetWindowTitle("openframeworks");

ofBackground(39);

ofSetLineWidth(2);

ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);

this->noise_param = ofRandom(1000);

}

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

void ofApp::update() {

ofSeedRandom(39);

this->noise_param += 0.00005;

}

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

void ofApp::draw() {

this->cam.begin();

float v_span = 1;

float u_span = 90;

int R = 230;

int r = 70;

ofColor color;

float noise_seed = ofRandom(1000);

float noise_span = ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.008), 0, 1, 0, 4);

for (float v = 0; v < 360; v += v_span) {

int u_start = ofMap(ofNoise(noise_seed, cos(v * DEG_TO_RAD) * noise_span, sin(v * DEG_TO_RAD) * noise_span, this->noise_param), 0, 1, -360, 360);

int next_u = ofMap(ofNoise(noise_seed, cos((v + v_span) * DEG_TO_RAD) * noise_span, sin((v + v_span) * DEG_TO_RAD) * noise_span, this->noise_param), 0, 1, -360, 360);

for (float u = u_start; u < u_start + 360; u += u_span) {

color.setHsb(ofMap(u, u_start, u_start + 360, 0, 255), 200, 255);

ofSetColor(color);

ofDrawLine(this->make_point(R, r, u, v), this->make_point(R, r, next_u, v + v_span));

next_u += u_span;

}

this->cam.end();

int start = 220;

if (ofGetFrameNum() > start) {

ostringstream os;

os << setw(4) << setfill('0') << ofGetFrameNum() - start;

ofImage image;

image.grabScreen(0, 0, ofGetWidth(), ofGetHeight());

image.saveImage("image/cap/img_" + os.str() + ".jpg");

if (ofGetFrameNum() - start >= 25 * 20) {

std::exit(1);

}

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

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, 0);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20240204

[ほしいものリスト]
Amazon

[ Sponsor Link ]

2024年2月3日

Color lines.

[ Video ]

[ About ]
色線。

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

	ofEasyCam cam;
	float noise_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::vec3 make_point(float R, float r, float u, float v);

ofEasyCam cam;

float noise_param;

};

#include "ofApp.h"

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

	ofSetFrameRate(25);
	ofSetWindowTitle("openframeworks");

	ofBackground(239);
	ofSetLineWidth(3);
	ofEnableDepthTest();

	this->noise_param = ofRandom(1000);
}

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

	ofSeedRandom(39);

	if (ofGetFrameNum() % 50 < 20) {

		if (ofGetFrameNum() % 50 < 10) {

			this->noise_param += ofMap(ofGetFrameNum() % 50, 0, 10, 0.001, 1);
		}
		else {
		
			this->noise_param += ofMap(ofGetFrameNum() % 50, 10, 20, 1, 0.001);
		}
	}
	else {

		this->noise_param += 0.001;
	}
}

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

	this->cam.begin();

	int v_span = 1;
	int u_span = 30;
	int R = 230;
	int r = 70;

	ofMesh line;
	line.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);

	float noise_seed = ofRandom(1000);
	ofColor color;
	for (float v = 0; v <= 360; v += v_span) {

		int u_start = ofMap(ofNoise(noise_seed, cos(v * DEG_TO_RAD) * 0.9, sin(v * DEG_TO_RAD) * 0.9, this->noise_param), 0, 1, -360, 360);
		int next_u = ofMap(ofNoise(noise_seed, cos((v + v_span) * DEG_TO_RAD) * 0.9, sin((v + v_span) * DEG_TO_RAD) * 0.9, this->noise_param), 0, 1, -360, 360);
		for (int u = u_start; u < u_start + 360; u += u_span) {
			
			line.addVertex(this->make_point(R, r, u, v));
			line.addVertex(this->make_point(R, r, next_u, v + v_span));

			color.setHsb((int)ofMap(u, u_start, u_start + 360, 0, 512) % 255, 200, 255);
			ofColor line_color = color;

			line.addColor(line_color); line.addColor(line_color);
			line.addIndex(line.getNumVertices() - 1); line.addIndex(line.getNumVertices() - 2);
			next_u += u_span;
		}
	}

	line.drawWireframe();

	this->cam.end();

	/*
	int start = 220;
	if (ofGetFrameNum() > start) {

		ostringstream os;
		os << setw(4) << setfill('0') << ofGetFrameNum() - start;
		ofImage image;
		image.grabScreen(0, 0, ofGetWidth(), ofGetHeight());
		image.saveImage("image/cap/img_" + os.str() + ".jpg");
		if (ofGetFrameNum() - start >= 25 * 20) {

			std::exit(1);
		}
	}
	*/
}

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(25);

ofSetWindowTitle("openframeworks");

ofBackground(239);

ofSetLineWidth(3);

ofEnableDepthTest();

this->noise_param = ofRandom(1000);

}

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

void ofApp::update() {

ofSeedRandom(39);

if (ofGetFrameNum() % 50 < 20) {

if (ofGetFrameNum() % 50 < 10) {

this->noise_param += ofMap(ofGetFrameNum() % 50, 0, 10, 0.001, 1);

}

else {

this->noise_param += ofMap(ofGetFrameNum() % 50, 10, 20, 1, 0.001);

}

else {

this->noise_param += 0.001;

}

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

void ofApp::draw() {

this->cam.begin();

int v_span = 1;

int u_span = 30;

int R = 230;

int r = 70;

ofMesh line;

line.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);

float noise_seed = ofRandom(1000);

ofColor color;

for (float v = 0; v <= 360; v += v_span) {

int u_start = ofMap(ofNoise(noise_seed, cos(v * DEG_TO_RAD) * 0.9, sin(v * DEG_TO_RAD) * 0.9, this->noise_param), 0, 1, -360, 360);

int next_u = ofMap(ofNoise(noise_seed, cos((v + v_span) * DEG_TO_RAD) * 0.9, sin((v + v_span) * DEG_TO_RAD) * 0.9, this->noise_param), 0, 1, -360, 360);

for (int u = u_start; u < u_start + 360; u += u_span) {

line.addVertex(this->make_point(R, r, u, v));

line.addVertex(this->make_point(R, r, next_u, v + v_span));

color.setHsb((int)ofMap(u, u_start, u_start + 360, 0, 512) % 255, 200, 255);

ofColor line_color = color;

line.addColor(line_color); line.addColor(line_color);

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

next_u += u_span;

}

line.drawWireframe();

this->cam.end();

int start = 220;

if (ofGetFrameNum() > start) {

ostringstream os;

os << setw(4) << setfill('0') << ofGetFrameNum() - start;

ofImage image;

image.grabScreen(0, 0, ofGetWidth(), ofGetHeight());

image.saveImage("image/cap/img_" + os.str() + ".jpg");

if (ofGetFrameNum() - start >= 25 * 20) {

std::exit(1);

}

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

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/Insta20240203

[ほしいものリスト]
Amazon

[ Sponsor Link ]

2024年2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