noise – プログラミング de 落描き

2023年9月13日2023年9月13日

Inside the torus where thorns grow.

[ Video ]

[ About ]
棘が生えるトーラスの内部。

[ 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, float scale = 1.0);

	ofEasyCam cam;
	ofMesh face_mesh, frame_mesh;

	vector<glm::vec3> location_list;
	vector<float> height_list;
};

#pragma once

#include "ofMain.h"

class ofApp : public ofBaseApp {

public:

void setup();

void update();

void draw();

void keyPressed(int key) {};

void keyReleased(int key) {};

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

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

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

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

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

void dragEvent(ofDragInfo dragInfo) {};

void gotMessage(ofMessage msg) {};

glm::vec3 make_point(float R, float r, float u, float v, float scale = 1.0);

ofEasyCam cam;

ofMesh face_mesh, frame_mesh;

vector<glm::vec3> location_list;

vector<float> height_list;

};

#include "ofApp.h"

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

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

	ofBackground(0);
	ofEnableDepthTest();

	for (auto v = 0; v < 360; v += 2) {

		for (auto u = 0; u < 360; u += 5) {

			this->location_list.push_back(this->make_point(200, 80, u, v));
			this->height_list.push_back(0);
		}
	}

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

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

	ofSeedRandom(39);

	this->face_mesh.clear();
	this->frame_mesh.clear();

	auto R = 200;
	auto r = 80;
	auto v_span = 2;
	auto u_span = 5;

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

		auto noise_value = ofNoise(glm::vec4(this->location_list[i] * 0.01, ofGetFrameNum() * 0.01));
		if (noise_value > 0.8) {
		
			this->height_list[i] > -65 ? this->height_list[i] -= ofMap(noise_value, 0.8, 1, 5, 15) : this->height_list[i] = -65;
		}
		else {

			this->height_list[i] < 0 ? this->height_list[i] += 3 : this->height_list[i] = 0;
		}
	}

	int index = 0;
	for (auto v = 0; v < 360; v += v_span) {

		for (auto u = 0; u < 360; u += u_span) {

			auto height = this->height_list[index++];

			vector<glm::vec3> vertices;
			vertices.push_back(this->make_point(R, r, u, v));
			vertices.push_back(this->make_point(R, r, u + u_span, v));
			vertices.push_back(this->make_point(R, r, u + u_span, v + v_span));
			vertices.push_back(this->make_point(R, r, u, v + v_span));
			vertices.push_back(this->make_point(R, r + height, u, v));
			vertices.push_back(this->make_point(R, r + height, u + u_span, v));
			vertices.push_back(this->make_point(R, r + height, u + u_span, v + v_span));
			vertices.push_back(this->make_point(R, r + height, u, v + v_span));

			vector<glm::vec3> vertices_2;
			vertices_2.push_back(this->make_point(R, r, u, v, 0.999));
			vertices_2.push_back(this->make_point(R, r, u + u_span, v, 0.999));
			vertices_2.push_back(this->make_point(R, r, u + u_span, v + v_span, 0.999));
			vertices_2.push_back(this->make_point(R, r, u, v + v_span, 0.999));
			vertices_2.push_back(this->make_point(R, r + height, u, v, 0.999));
			vertices_2.push_back(this->make_point(R, r + height, u + u_span, v, 0.999));
			vertices_2.push_back(this->make_point(R, r + height, u + u_span, v + v_span, 0.999));
			vertices_2.push_back(this->make_point(R, r + height, u, v + v_span, 0.999));

			int index = this->face_mesh.getNumVertices();
			this->face_mesh.addVertices(vertices);
			this->frame_mesh.addVertices(vertices_2);

			// Face Index

			this->face_mesh.addIndex(index + 0); this->face_mesh.addIndex(index + 1); this->face_mesh.addIndex(index + 2);
			this->face_mesh.addIndex(index + 0); this->face_mesh.addIndex(index + 2); this->face_mesh.addIndex(index + 3);

			this->face_mesh.addIndex(index + 4); this->face_mesh.addIndex(index + 5); this->face_mesh.addIndex(index + 6);
			this->face_mesh.addIndex(index + 4); this->face_mesh.addIndex(index + 6); this->face_mesh.addIndex(index + 7);

			this->face_mesh.addIndex(index + 0); this->face_mesh.addIndex(index + 4); this->face_mesh.addIndex(index + 5);
			this->face_mesh.addIndex(index + 0); this->face_mesh.addIndex(index + 5); this->face_mesh.addIndex(index + 1);

			this->face_mesh.addIndex(index + 1); this->face_mesh.addIndex(index + 5); this->face_mesh.addIndex(index + 6);
			this->face_mesh.addIndex(index + 1); this->face_mesh.addIndex(index + 6); this->face_mesh.addIndex(index + 2);

			this->face_mesh.addIndex(index + 2); this->face_mesh.addIndex(index + 6); this->face_mesh.addIndex(index + 7);
			this->face_mesh.addIndex(index + 2); this->face_mesh.addIndex(index + 7); this->face_mesh.addIndex(index + 3);

			this->face_mesh.addIndex(index + 3); this->face_mesh.addIndex(index + 7); this->face_mesh.addIndex(index + 4);
			this->face_mesh.addIndex(index + 3); this->face_mesh.addIndex(index + 4); this->face_mesh.addIndex(index + 0);

			// Frame Index

			this->frame_mesh.addIndex(index + 0); this->frame_mesh.addIndex(index + 1);
			this->frame_mesh.addIndex(index + 1); this->frame_mesh.addIndex(index + 2);
			this->frame_mesh.addIndex(index + 2); this->frame_mesh.addIndex(index + 3);
			this->frame_mesh.addIndex(index + 3); this->frame_mesh.addIndex(index + 0);

			this->frame_mesh.addIndex(index + 4); this->frame_mesh.addIndex(index + 5);
			this->frame_mesh.addIndex(index + 5); this->frame_mesh.addIndex(index + 6);
			this->frame_mesh.addIndex(index + 6); this->frame_mesh.addIndex(index + 7);
			this->frame_mesh.addIndex(index + 7); this->frame_mesh.addIndex(index + 4);

			this->frame_mesh.addIndex(index + 0); this->frame_mesh.addIndex(index + 4);
			this->frame_mesh.addIndex(index + 1); this->frame_mesh.addIndex(index + 5);
			this->frame_mesh.addIndex(index + 2); this->frame_mesh.addIndex(index + 6);
			this->frame_mesh.addIndex(index + 3); this->frame_mesh.addIndex(index + 7);
		}
	}
}

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

	int R = 200;
	int r = 60;

	this->cam.begin();
	ofRotateX(90);
	this->cam.setPosition(R, 0, r * 2);
	ofRotateZ(ofGetFrameNum());

	ofSetColor(0);
	this->face_mesh.drawFaces();

	ofSetColor(255);
	this->frame_mesh.drawWireframe();


	this->cam.end();
}

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

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

	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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(25);

ofSetWindowTitle("openframeworks");

ofBackground(0);

ofEnableDepthTest();

for (auto v = 0; v < 360; v += 2) {

for (auto u = 0; u < 360; u += 5) {

this->location_list.push_back(this->make_point(200, 80, u, v));

this->height_list.push_back(0);

}

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

}

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

void ofApp::update() {

ofSeedRandom(39);

this->face_mesh.clear();

this->frame_mesh.clear();

auto R = 200;

auto r = 80;

auto v_span = 2;

auto u_span = 5;

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

auto noise_value = ofNoise(glm::vec4(this->location_list[i] * 0.01, ofGetFrameNum() * 0.01));

if (noise_value > 0.8) {

this->height_list[i] > -65 ? this->height_list[i] -= ofMap(noise_value, 0.8, 1, 5, 15) : this->height_list[i] = -65;

}

else {

this->height_list[i] < 0 ? this->height_list[i] += 3 : this->height_list[i] = 0;

}

int index = 0;

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

for (auto u = 0; u < 360; u += u_span) {

auto height = this->height_list[index++];

vector<glm::vec3> vertices;

vertices.push_back(this->make_point(R, r, u, v));

vertices.push_back(this->make_point(R, r, u + u_span, v));

vertices.push_back(this->make_point(R, r, u + u_span, v + v_span));

vertices.push_back(this->make_point(R, r, u, v + v_span));

vertices.push_back(this->make_point(R, r + height, u, v));

vertices.push_back(this->make_point(R, r + height, u + u_span, v));

vertices.push_back(this->make_point(R, r + height, u + u_span, v + v_span));

vertices.push_back(this->make_point(R, r + height, u, v + v_span));

vector<glm::vec3> vertices_2;

vertices_2.push_back(this->make_point(R, r, u, v, 0.999));

vertices_2.push_back(this->make_point(R, r, u + u_span, v, 0.999));

vertices_2.push_back(this->make_point(R, r, u + u_span, v + v_span, 0.999));

vertices_2.push_back(this->make_point(R, r, u, v + v_span, 0.999));

vertices_2.push_back(this->make_point(R, r + height, u, v, 0.999));

vertices_2.push_back(this->make_point(R, r + height, u + u_span, v, 0.999));

vertices_2.push_back(this->make_point(R, r + height, u + u_span, v + v_span, 0.999));

vertices_2.push_back(this->make_point(R, r + height, u, v + v_span, 0.999));

int index = this->face_mesh.getNumVertices();

this->face_mesh.addVertices(vertices);

this->frame_mesh.addVertices(vertices_2);

// Face Index

this->face_mesh.addIndex(index + 0); this->face_mesh.addIndex(index + 1); this->face_mesh.addIndex(index + 2);

this->face_mesh.addIndex(index + 0); this->face_mesh.addIndex(index + 2); this->face_mesh.addIndex(index + 3);

this->face_mesh.addIndex(index + 4); this->face_mesh.addIndex(index + 5); this->face_mesh.addIndex(index + 6);

this->face_mesh.addIndex(index + 4); this->face_mesh.addIndex(index + 6); this->face_mesh.addIndex(index + 7);

this->face_mesh.addIndex(index + 0); this->face_mesh.addIndex(index + 4); this->face_mesh.addIndex(index + 5);

this->face_mesh.addIndex(index + 0); this->face_mesh.addIndex(index + 5); this->face_mesh.addIndex(index + 1);

this->face_mesh.addIndex(index + 1); this->face_mesh.addIndex(index + 5); this->face_mesh.addIndex(index + 6);

this->face_mesh.addIndex(index + 1); this->face_mesh.addIndex(index + 6); this->face_mesh.addIndex(index + 2);

this->face_mesh.addIndex(index + 2); this->face_mesh.addIndex(index + 6); this->face_mesh.addIndex(index + 7);

this->face_mesh.addIndex(index + 2); this->face_mesh.addIndex(index + 7); this->face_mesh.addIndex(index + 3);

this->face_mesh.addIndex(index + 3); this->face_mesh.addIndex(index + 7); this->face_mesh.addIndex(index + 4);

this->face_mesh.addIndex(index + 3); this->face_mesh.addIndex(index + 4); this->face_mesh.addIndex(index + 0);

// Frame Index

this->frame_mesh.addIndex(index + 0); this->frame_mesh.addIndex(index + 1);

this->frame_mesh.addIndex(index + 1); this->frame_mesh.addIndex(index + 2);

this->frame_mesh.addIndex(index + 2); this->frame_mesh.addIndex(index + 3);

this->frame_mesh.addIndex(index + 3); this->frame_mesh.addIndex(index + 0);

this->frame_mesh.addIndex(index + 4); this->frame_mesh.addIndex(index + 5);

this->frame_mesh.addIndex(index + 5); this->frame_mesh.addIndex(index + 6);

this->frame_mesh.addIndex(index + 6); this->frame_mesh.addIndex(index + 7);

this->frame_mesh.addIndex(index + 7); this->frame_mesh.addIndex(index + 4);

this->frame_mesh.addIndex(index + 0); this->frame_mesh.addIndex(index + 4);

this->frame_mesh.addIndex(index + 1); this->frame_mesh.addIndex(index + 5);

this->frame_mesh.addIndex(index + 2); this->frame_mesh.addIndex(index + 6);

this->frame_mesh.addIndex(index + 3); this->frame_mesh.addIndex(index + 7);

}

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

void ofApp::draw() {

int R = 200;

int r = 60;

this->cam.begin();

ofRotateX(90);

this->cam.setPosition(R, 0, r * 2);

ofRotateZ(ofGetFrameNum());

ofSetColor(0);

this->face_mesh.drawFaces();

ofSetColor(255);

this->frame_mesh.drawWireframe();

this->cam.end();

}

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

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

// 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) * scale) * cos(v);

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

auto z = r * sin(u) * scale;

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

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20230913

2023年9月12日

Alternate torus. Draw by openFrameworks

[ Video ]

[ Abouot ]
交互トーラス。

[ 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;

	ofMesh face, line;
	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;

ofMesh face, line;

float noise_param;

};

#include "ofApp.h"

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

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

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

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

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

	ofSeedRandom(39);

	auto seed = glm::vec3(ofRandom(1000), ofRandom(1000), ofRandom(1000));

	if ((ofGetFrameNum() % 60 > 15 && ofGetFrameNum() % 60 < 30) || (ofGetFrameNum() % 60 > 45 && ofGetFrameNum() % 60 < 60)) {

		this->noise_param += 0.1;
	}

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

	float phi_deg_step = 2;
	float theta_deg_step = 2;
	float threshold = 0.5;

	float R = 250;
	float base_r = R * 0.25;
	float r;

	if (ofGetFrameNum() % 60 < 30) {

		if (ofGetFrameNum() % 60 < 15) {

			r = R * 0.25;
		}
		else {

			r = ofMap(ofGetFrameNum() % 60, 15, 30, R * 0.25, R * 0.35);
		}
	}
	else {

		if (ofGetFrameNum() % 60 < 45) {

			r = R * 0.35;
		}
		else {

			r = ofMap(ofGetFrameNum() % 60, 45, 60, R * 0.35, R * 0.25);
		}
	}

	ofColor face_color = ofColor(39, 39, 239);
	ofColor line_color = ofColor(39);

	for (float phi_deg = 0; phi_deg < 360; phi_deg += phi_deg_step) {

		for (float theta_deg = 0; theta_deg < 360; theta_deg += theta_deg_step) {

			auto noise_value = ofNoise(glm::vec4(this->make_point(R, base_r, theta_deg, phi_deg) * 0.03, this->noise_param));
			if (noise_value <= threshold) { continue; }

			auto noise_1 = ofNoise(glm::vec4(this->make_point(R, base_r, theta_deg - theta_deg_step, phi_deg) * 0.03, this->noise_param));
			auto noise_2 = ofNoise(glm::vec4(this->make_point(R, base_r, theta_deg, phi_deg + phi_deg_step) * 0.03, this->noise_param));
			auto noise_3 = ofNoise(glm::vec4(this->make_point(R, base_r, theta_deg, phi_deg - phi_deg_step) * 0.03, this->noise_param));
			auto noise_4 = ofNoise(glm::vec4(this->make_point(R, base_r, theta_deg + theta_deg_step, phi_deg) * 0.03, this->noise_param));

			auto index = this->face.getNumVertices();
			vector<glm::vec3> vertices;

			vertices.push_back(glm::vec3(this->make_point(R, r, theta_deg - theta_deg_step * 0.5, phi_deg - phi_deg_step * 0.5)));
			vertices.push_back(glm::vec3(this->make_point(R, r, theta_deg + theta_deg_step * 0.5, phi_deg - phi_deg_step * 0.5)));
			vertices.push_back(glm::vec3(this->make_point(R, r, theta_deg - theta_deg_step * 0.5, phi_deg + phi_deg_step * 0.5)));
			vertices.push_back(glm::vec3(this->make_point(R, r, theta_deg + theta_deg_step * 0.5, phi_deg + phi_deg_step * 0.5)));

			this->face.addVertices(vertices);

			this->face.addColor(face_color);
			this->face.addColor(face_color);
			this->face.addColor(face_color);
			this->face.addColor(face_color);

			this->face.addIndex(index + 0); this->face.addIndex(index + 1); this->face.addIndex(index + 3);
			this->face.addIndex(index + 0); this->face.addIndex(index + 3); this->face.addIndex(index + 2);

			if (noise_1 <= threshold) {

				this->line.addVertex(vertices[0]);
				this->line.addVertex(vertices[2]);

				this->line.addColor(line_color);
				this->line.addColor(line_color);

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

			if (noise_2 <= threshold) {

				this->line.addVertex(vertices[2]);
				this->line.addVertex(vertices[3]);

				this->line.addColor(line_color);
				this->line.addColor(line_color);

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

			if (noise_3 <= threshold) {

				this->line.addVertex(vertices[0]);
				this->line.addVertex(vertices[1]);

				this->line.addColor(line_color);
				this->line.addColor(line_color);

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

			if (noise_4 <= threshold) {

				this->line.addVertex(vertices[1]);
				this->line.addVertex(vertices[3]);

				this->line.addColor(line_color);
				this->line.addColor(line_color);

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


			}
		}
	}

	if (ofGetFrameNum() % 60 < 30) {

		if (ofGetFrameNum() % 60 < 15) {

			r = R * 0.35;
		}
		else {

			r = ofMap(ofGetFrameNum() % 60, 15, 30, R * 0.35, R * 0.25);
		}
	}
	else {

		if (ofGetFrameNum() % 60 < 45) {

			r = R * 0.25;
		}
		else {

			r = ofMap(ofGetFrameNum() % 60, 45, 60, R * 0.25, R * 0.35);
		}
	}


	face_color = ofColor(239, 39, 39);
	line_color = ofColor(39);

	for (float phi_deg = 0; phi_deg < 360; phi_deg += phi_deg_step) {

		for (float theta_deg = 0; theta_deg < 360; theta_deg += theta_deg_step) {

			auto noise_value = ofNoise(glm::vec4(this->make_point(R, base_r, theta_deg, phi_deg) * 0.03, this->noise_param));
			if (noise_value >= threshold) { continue; }

			auto noise_1 = ofNoise(glm::vec4(this->make_point(R, base_r, theta_deg - theta_deg_step, phi_deg) * 0.03, this->noise_param));
			auto noise_2 = ofNoise(glm::vec4(this->make_point(R, base_r, theta_deg, phi_deg + phi_deg_step) * 0.03, this->noise_param));
			auto noise_3 = ofNoise(glm::vec4(this->make_point(R, base_r, theta_deg, phi_deg - phi_deg_step) * 0.03, this->noise_param));
			auto noise_4 = ofNoise(glm::vec4(this->make_point(R, base_r, theta_deg + theta_deg_step, phi_deg) * 0.03, this->noise_param));

			auto index = this->face.getNumVertices();
			vector<glm::vec3> vertices;

			vertices.push_back(glm::vec3(this->make_point(R, r, theta_deg - theta_deg_step * 0.5, phi_deg - phi_deg_step * 0.5)));
			vertices.push_back(glm::vec3(this->make_point(R, r, theta_deg + theta_deg_step * 0.5, phi_deg - phi_deg_step * 0.5)));
			vertices.push_back(glm::vec3(this->make_point(R, r, theta_deg - theta_deg_step * 0.5, phi_deg + phi_deg_step * 0.5)));
			vertices.push_back(glm::vec3(this->make_point(R, r, theta_deg + theta_deg_step * 0.5, phi_deg + phi_deg_step * 0.5)));

			this->face.addVertices(vertices);

			this->face.addColor(face_color);
			this->face.addColor(face_color);
			this->face.addColor(face_color);
			this->face.addColor(face_color);

			this->face.addIndex(index + 0); this->face.addIndex(index + 1); this->face.addIndex(index + 3);
			this->face.addIndex(index + 0); this->face.addIndex(index + 3); this->face.addIndex(index + 2);

			if (noise_1 >= threshold) {

				this->line.addVertex(vertices[0]);
				this->line.addVertex(vertices[2]);

				this->line.addColor(line_color);
				this->line.addColor(line_color);

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

			if (noise_2 >= threshold) {

				this->line.addVertex(vertices[2]);
				this->line.addVertex(vertices[3]);

				this->line.addColor(line_color);
				this->line.addColor(line_color);

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

			if (noise_3 >= threshold) {

				this->line.addVertex(vertices[0]);
				this->line.addVertex(vertices[1]);

				this->line.addColor(line_color);
				this->line.addColor(line_color);

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

			if (noise_4 >= threshold) {

				this->line.addVertex(vertices[1]);
				this->line.addVertex(vertices[3]);

				this->line.addColor(line_color);
				this->line.addColor(line_color);

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


			}
		}
	}

}

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

	int R = 250;
	int r = R * 0.3;

	this->cam.begin();
	ofRotateX(90);
	this->cam.setPosition(R, 0, r * 2);
	ofRotateZ(ofGetFrameNum() * 2.4);

	this->line.draw();
	this->face.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

222

223

224

225

226

227

228

229

230

231

232

233

234

235

236

237

238

239

240

241

242

243

244

245

246

247

248

249

250

251

252

253

254

255

256

257

258

259

260

261

262

263

264

265

266

267

268

269

270

271

272

273

274

275

276

277

278

279

280

281

282

283

284

285

286

287

288

289

290

291

292

293

294

295

296

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(25);

ofSetWindowTitle("openframeworks");

ofBackground(239);

ofSetLineWidth(3);

ofEnableDepthTest();

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

}

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

void ofApp::update() {

ofSeedRandom(39);

auto seed = glm::vec3(ofRandom(1000), ofRandom(1000), ofRandom(1000));

if ((ofGetFrameNum() % 60 > 15 && ofGetFrameNum() % 60 < 30) || (ofGetFrameNum() % 60 > 45 && ofGetFrameNum() % 60 < 60)) {

this->noise_param += 0.1;

}

this->face.clear();

this->line.clear();

float phi_deg_step = 2;

float theta_deg_step = 2;

float threshold = 0.5;

float R = 250;

float base_r = R * 0.25;

float r;

if (ofGetFrameNum() % 60 < 30) {

if (ofGetFrameNum() % 60 < 15) {

r = R * 0.25;

}

else {

r = ofMap(ofGetFrameNum() % 60, 15, 30, R * 0.25, R * 0.35);

}

else {

if (ofGetFrameNum() % 60 < 45) {

r = R * 0.35;

}

else {

r = ofMap(ofGetFrameNum() % 60, 45, 60, R * 0.35, R * 0.25);

}

ofColor face_color = ofColor(39, 39, 239);

ofColor line_color = ofColor(39);

for (float phi_deg = 0; phi_deg < 360; phi_deg += phi_deg_step) {

for (float theta_deg = 0; theta_deg < 360; theta_deg += theta_deg_step) {

auto noise_value = ofNoise(glm::vec4(this->make_point(R, base_r, theta_deg, phi_deg) * 0.03, this->noise_param));

if (noise_value <= threshold) { continue; }

auto noise_1 = ofNoise(glm::vec4(this->make_point(R, base_r, theta_deg - theta_deg_step, phi_deg) * 0.03, this->noise_param));

auto noise_2 = ofNoise(glm::vec4(this->make_point(R, base_r, theta_deg, phi_deg + phi_deg_step) * 0.03, this->noise_param));

auto noise_3 = ofNoise(glm::vec4(this->make_point(R, base_r, theta_deg, phi_deg - phi_deg_step) * 0.03, this->noise_param));

auto noise_4 = ofNoise(glm::vec4(this->make_point(R, base_r, theta_deg + theta_deg_step, phi_deg) * 0.03, this->noise_param));

auto index = this->face.getNumVertices();

vector<glm::vec3> vertices;

vertices.push_back(glm::vec3(this->make_point(R, r, theta_deg - theta_deg_step * 0.5, phi_deg - phi_deg_step * 0.5)));

vertices.push_back(glm::vec3(this->make_point(R, r, theta_deg + theta_deg_step * 0.5, phi_deg - phi_deg_step * 0.5)));

vertices.push_back(glm::vec3(this->make_point(R, r, theta_deg - theta_deg_step * 0.5, phi_deg + phi_deg_step * 0.5)));

vertices.push_back(glm::vec3(this->make_point(R, r, theta_deg + theta_deg_step * 0.5, phi_deg + phi_deg_step * 0.5)));

this->face.addVertices(vertices);

this->face.addColor(face_color);

this->face.addIndex(index + 0); this->face.addIndex(index + 1); this->face.addIndex(index + 3);

this->face.addIndex(index + 0); this->face.addIndex(index + 3); this->face.addIndex(index + 2);

if (noise_1 <= threshold) {

this->line.addVertex(vertices[0]);

this->line.addVertex(vertices[2]);

this->line.addColor(line_color);

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

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

}

if (noise_2 <= threshold) {

this->line.addVertex(vertices[2]);

this->line.addVertex(vertices[3]);

this->line.addColor(line_color);

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

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

}

if (noise_3 <= threshold) {

this->line.addVertex(vertices[0]);

this->line.addVertex(vertices[1]);

this->line.addColor(line_color);

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

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

}

if (noise_4 <= threshold) {

this->line.addVertex(vertices[1]);

this->line.addVertex(vertices[3]);

this->line.addColor(line_color);

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

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

}

if (ofGetFrameNum() % 60 < 30) {

if (ofGetFrameNum() % 60 < 15) {

r = R * 0.35;

}

else {

r = ofMap(ofGetFrameNum() % 60, 15, 30, R * 0.35, R * 0.25);

}

else {

if (ofGetFrameNum() % 60 < 45) {

r = R * 0.25;

}

else {

r = ofMap(ofGetFrameNum() % 60, 45, 60, R * 0.25, R * 0.35);

}

face_color = ofColor(239, 39, 39);

line_color = ofColor(39);

for (float phi_deg = 0; phi_deg < 360; phi_deg += phi_deg_step) {

for (float theta_deg = 0; theta_deg < 360; theta_deg += theta_deg_step) {

auto noise_value = ofNoise(glm::vec4(this->make_point(R, base_r, theta_deg, phi_deg) * 0.03, this->noise_param));

if (noise_value >= threshold) { continue; }

auto noise_1 = ofNoise(glm::vec4(this->make_point(R, base_r, theta_deg - theta_deg_step, phi_deg) * 0.03, this->noise_param));

auto noise_2 = ofNoise(glm::vec4(this->make_point(R, base_r, theta_deg, phi_deg + phi_deg_step) * 0.03, this->noise_param));

auto noise_3 = ofNoise(glm::vec4(this->make_point(R, base_r, theta_deg, phi_deg - phi_deg_step) * 0.03, this->noise_param));

auto noise_4 = ofNoise(glm::vec4(this->make_point(R, base_r, theta_deg + theta_deg_step, phi_deg) * 0.03, this->noise_param));

auto index = this->face.getNumVertices();

vector<glm::vec3> vertices;

vertices.push_back(glm::vec3(this->make_point(R, r, theta_deg - theta_deg_step * 0.5, phi_deg - phi_deg_step * 0.5)));

vertices.push_back(glm::vec3(this->make_point(R, r, theta_deg + theta_deg_step * 0.5, phi_deg - phi_deg_step * 0.5)));

vertices.push_back(glm::vec3(this->make_point(R, r, theta_deg - theta_deg_step * 0.5, phi_deg + phi_deg_step * 0.5)));

vertices.push_back(glm::vec3(this->make_point(R, r, theta_deg + theta_deg_step * 0.5, phi_deg + phi_deg_step * 0.5)));

this->face.addVertices(vertices);

this->face.addColor(face_color);

this->face.addIndex(index + 0); this->face.addIndex(index + 1); this->face.addIndex(index + 3);

this->face.addIndex(index + 0); this->face.addIndex(index + 3); this->face.addIndex(index + 2);

if (noise_1 >= threshold) {

this->line.addVertex(vertices[0]);

this->line.addVertex(vertices[2]);

this->line.addColor(line_color);

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

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

}

if (noise_2 >= threshold) {

this->line.addVertex(vertices[2]);

this->line.addVertex(vertices[3]);

this->line.addColor(line_color);

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

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

}

if (noise_3 >= threshold) {

this->line.addVertex(vertices[0]);

this->line.addVertex(vertices[1]);

this->line.addColor(line_color);

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

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

}

if (noise_4 >= threshold) {

this->line.addVertex(vertices[1]);

this->line.addVertex(vertices[3]);

this->line.addColor(line_color);

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

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

}

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

void ofApp::draw() {

int R = 250;

int r = R * 0.3;

this->cam.begin();

ofRotateX(90);

this->cam.setPosition(R, 0, r * 2);

ofRotateZ(ofGetFrameNum() * 2.4);

this->line.draw();

this->face.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/Insta20230912

2023年9月9日

Hazama. Draw by openFrameworks

[ Video ]

[ About ]
狭間。

[ 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) {};

	vector<glm::vec2> location_list;
	vector<glm::vec2> velocity_list;
	vector<float> speed_list;
	vector<float> life_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 windowResized(int w, int h) {};

void dragEvent(ofDragInfo dragInfo) {};

void gotMessage(ofMessage msg) {};

vector<glm::vec2> location_list;

vector<glm::vec2> velocity_list;

vector<float> speed_list;

vector<float> life_list;

vector<ofColor> color_list;

};

#include "ofApp.h"

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

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

	ofBackground(39);
	ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);
}

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

	ofColor color;
	for (int i = 0; i < 100; i++) {

		auto random_x = ofRandom(-360, 360);
		auto noise_y = ofMap(ofNoise(random_x * 0.002 + ofGetFrameNum() * 0.03), 0, 1, -360, 360);
		auto next_y = ofMap(ofNoise(random_x * 0.002 + (ofGetFrameNum() + 1) * 0.03), 0, 1, -360, 360);

		auto location = glm::vec2(random_x, noise_y);
		auto next = glm::vec2(random_x, next_y);

		this->location_list.push_back(location);
		if (ofRandom(100) < 50) {
		
			this->velocity_list.push_back(next - location);
		}
		else {

			this->velocity_list.push_back(location - next);
		}
		this->speed_list.push_back(ofRandom(5, 10));
		this->life_list.push_back(15);

		color.setHsb(ofRandom(255), 255, 255);
		this->color_list.push_back(color);
	}

	for (int i = this->location_list.size() - 1; i >= 0; i--) {

		auto fueture = glm::normalize(this->velocity_list[i]) * 50;
		auto deg = ofMap(ofNoise(glm::vec3(this->location_list[i] * 0.005, ofGetFrameNum() * 0.005)), 0, 1, -360, 360);
		fueture = fueture + glm::vec2(10 * cos(deg * DEG_TO_RAD), 10 * sin(deg * DEG_TO_RAD));
		this->location_list[i] += glm::normalize(fueture) * this->speed_list[i];
		
		
		this->life_list[i] -= 1;

		if (this->life_list[i] < 0) {

			this->location_list.erase(this->location_list.begin() + i);
			this->velocity_list.erase(this->velocity_list.begin() + i);
			this->speed_list.erase(this->speed_list.begin() + i);
			this->life_list.erase(this->life_list.begin() + i);
			this->color_list.erase(this->color_list.begin() + i);
		}
	}
}

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

	ofTranslate(ofGetWindowSize() * 0.5);

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

		ofSetColor(this->color_list[i], ofMap(this->life_list[i], 0, 15, 0, 255));
		ofDrawCircle(this->location_list[i], 3);
	}
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(25);

ofSetWindowTitle("openframeworks");

ofBackground(39);

ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);

}

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

void ofApp::update() {

ofColor color;

for (int i = 0; i < 100; i++) {

auto random_x = ofRandom(-360, 360);

auto noise_y = ofMap(ofNoise(random_x * 0.002 + ofGetFrameNum() * 0.03), 0, 1, -360, 360);

auto next_y = ofMap(ofNoise(random_x * 0.002 + (ofGetFrameNum() + 1) * 0.03), 0, 1, -360, 360);

auto location = glm::vec2(random_x, noise_y);

auto next = glm::vec2(random_x, next_y);

this->location_list.push_back(location);

if (ofRandom(100) < 50) {

this->velocity_list.push_back(next - location);

}

else {

this->velocity_list.push_back(location - next);

}

this->speed_list.push_back(ofRandom(5, 10));

this->life_list.push_back(15);

color.setHsb(ofRandom(255), 255, 255);

this->color_list.push_back(color);

}

for (int i = this->location_list.size() - 1; i >= 0; i--) {

auto fueture = glm::normalize(this->velocity_list[i]) * 50;

auto deg = ofMap(ofNoise(glm::vec3(this->location_list[i] * 0.005, ofGetFrameNum() * 0.005)), 0, 1, -360, 360);

fueture = fueture + glm::vec2(10 * cos(deg * DEG_TO_RAD), 10 * sin(deg * DEG_TO_RAD));

this->location_list[i] += glm::normalize(fueture) * this->speed_list[i];

this->life_list[i] -= 1;

if (this->life_list[i] < 0) {

this->location_list.erase(this->location_list.begin() + i);

this->velocity_list.erase(this->velocity_list.begin() + i);

this->speed_list.erase(this->speed_list.begin() + i);

this->life_list.erase(this->life_list.begin() + i);

this->color_list.erase(this->color_list.begin() + i);

}

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

void ofApp::draw() {

ofTranslate(ofGetWindowSize() * 0.5);

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

ofSetColor(this->color_list[i], ofMap(this->life_list[i], 0, 15, 0, 255));

ofDrawCircle(this->location_list[i], 3);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20230909

2025年1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	31