openFrameworks – ページ 345 – プログラミング de 落描き

2022年1月24日2022年1月24日

Shaking Shadows. Draw by openFrameworks

[ Video ]

[ About ]
影っぽく描写したものをノイズでずらす。

Shifting the shadow-like depiction with noise.

[ 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) {};

	void draw_digital(glm::vec2 location, int number_index, ofColor fill_color, ofColor no_fill_color);
	void draw_hexagon(glm::vec2 location, float deg, ofColor fill_color, ofColor no_fill_color);

	vector<pair<glm::vec2, int>> number_list;

	float hexagon_height;
	float hexagon_width;
};

#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) {};

void draw_digital(glm::vec2 location, int number_index, ofColor fill_color, ofColor no_fill_color);

void draw_hexagon(glm::vec2 location, float deg, ofColor fill_color, ofColor no_fill_color);

vector<pair<glm::vec2, int>> number_list;

float hexagon_height;

float hexagon_width;

};

#include "ofApp.h"

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

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

	ofBackground(255);

	this->hexagon_height = 8;
	this->hexagon_width = 4;

	for (float x = this->hexagon_width * 9; x <= ofGetWidth() - this->hexagon_width * 9; x += this->hexagon_height * 1.5) {

		for (float y = this->hexagon_height * 3; y <= ofGetHeight() - this->hexagon_height * 3; y += this->hexagon_height * 3) {

			this->number_list.push_back(make_pair(glm::vec2(x, y), 0));
		}
	}
}

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

	ofSeedRandom(39);

	for (int i = 0; i < 2; i++) {

		auto noise_location = glm::vec2(ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.015), 0, 1, -60, ofGetWidth() + 60), ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.015), 0, 1, -60, ofGetHeight() + 60));

		for (auto& number : this->number_list) {

			if (glm::distance(noise_location, number.first) < 40) {

				number.second = number.second < 100 ? number.second + 10 : 100;
			}
			else {

				number.second = number.second > 0 ? number.second - 0.01 : 0;
			}
		}
	}
}

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

	auto gap_1 = ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.05), 0, 1, -20, 20);
	auto gap_2 = ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.05), 0, 1, -20, 20);

	ofPushMatrix();
	ofTranslate(gap_1, gap_2);

	for (auto& number : this->number_list) {

		if (number.second > 0) {

			int number_index = ofMap(ofNoise(glm::vec3(number.first * 0.05, ofGetFrameNum() * 0.03)), 0, 1, 0, 10);
			this->draw_digital(number.first, number_index, ofColor(180), ofColor(180, 0));
		}
	}

	ofPopMatrix();

	for (auto& number : this->number_list) {

		if (number.second > 0) {

			int number_index = ofMap(ofNoise(glm::vec3(number.first * 0.05, ofGetFrameNum() * 0.03)), 0, 1, 0, 10);
			this->draw_digital(number.first, number_index, ofColor(0), ofColor(255));
		}
	}
}

//--------------------------------------------------------------
void ofApp::draw_digital(glm::vec2 location, int number_index, ofColor fill_color, ofColor no_fill_color) {

	vector<pair<glm::vec2, float>> part_list = {
		make_pair<glm::vec2, float>(location + glm::vec2(0, -this->hexagon_height), 90),
		make_pair<glm::vec2, float>(location + glm::vec2(this->hexagon_height * -0.5, this->hexagon_height * 0.5), 0),
		make_pair<glm::vec2, float>(location + glm::vec2(this->hexagon_height * 0.5, this->hexagon_height * 0.5), 0),
		make_pair<glm::vec2, float>(location + glm::vec2(0, 0), 90),
		make_pair<glm::vec2, float>(location + glm::vec2(this->hexagon_height * -0.5, this->hexagon_height * -0.5), 0),
		make_pair<glm::vec2, float>(location + glm::vec2(this->hexagon_height * 0.5, this->hexagon_height * -0.5), 0),
		make_pair<glm::vec2, float>(location + glm::vec2(0, this->hexagon_height), 90)
	};

	vector<vector<int>> index_list = {
		{ 0, 1, 2, 4, 5, 6 },
		{ 2, 5 },
		{ 0, 1, 3, 5, 6 },
		{ 0, 2, 3, 5, 6 },
		{ 2, 3, 4, 5 },
		{ 0, 2, 3, 4, 6 },
		{ 0, 1, 2, 3, 4, 6 },
		{ 0, 2, 5 },
		{ 0, 1, 2, 3, 4, 5, 6 },
		{ 0, 2, 3, 4, 5, 6 },
	};

	for (auto& index : index_list[number_index]) {

		this->draw_hexagon(part_list[index].first, part_list[index].second, fill_color, no_fill_color);
	}
}

//--------------------------------------------------------------
void ofApp::draw_hexagon(glm::vec2 location, float deg, ofColor fill_color, ofColor no_fill_color) {

	ofPushMatrix();
	ofTranslate(location);
	ofRotate(deg);

	vector<glm::vec2> vertices;
	vertices.push_back(glm::vec2(this->hexagon_width * -0.4, this->hexagon_height * -0.4));
	vertices.push_back(glm::vec2(this->hexagon_width * -0.4, this->hexagon_height * 0.4));
	vertices.push_back(glm::vec2(0, this->hexagon_height * 0.5));
	vertices.push_back(glm::vec2(this->hexagon_width * 0.4, this->hexagon_height * 0.4));
	vertices.push_back(glm::vec2(this->hexagon_width * 0.4, this->hexagon_height * -0.4));
	vertices.push_back(glm::vec2(0, this->hexagon_height * -0.5));

	ofFill();
	ofSetColor(fill_color);

	ofBeginShape();
	ofVertices(vertices);
	ofEndShape(true);

	ofNoFill();
	ofSetColor(no_fill_color);

	ofBeginShape();
	ofVertices(vertices);
	ofEndShape(true);

	ofPopMatrix();
}

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(30);

ofSetWindowTitle("openframeworks");

ofBackground(255);

this->hexagon_height = 8;

this->hexagon_width = 4;

for (float x = this->hexagon_width * 9; x <= ofGetWidth() - this->hexagon_width * 9; x += this->hexagon_height * 1.5) {

for (float y = this->hexagon_height * 3; y <= ofGetHeight() - this->hexagon_height * 3; y += this->hexagon_height * 3) {

this->number_list.push_back(make_pair(glm::vec2(x, y), 0));

}

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

void ofApp::update() {

ofSeedRandom(39);

for (int i = 0; i < 2; i++) {

auto noise_location = glm::vec2(ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.015), 0, 1, -60, ofGetWidth() + 60), ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.015), 0, 1, -60, ofGetHeight() + 60));

for (auto& number : this->number_list) {

if (glm::distance(noise_location, number.first) < 40) {

number.second = number.second < 100 ? number.second + 10 : 100;

}

else {

number.second = number.second > 0 ? number.second - 0.01 : 0;

}

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

void ofApp::draw() {

auto gap_1 = ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.05), 0, 1, -20, 20);

auto gap_2 = ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.05), 0, 1, -20, 20);

ofPushMatrix();

ofTranslate(gap_1, gap_2);

for (auto& number : this->number_list) {

if (number.second > 0) {

int number_index = ofMap(ofNoise(glm::vec3(number.first * 0.05, ofGetFrameNum() * 0.03)), 0, 1, 0, 10);

this->draw_digital(number.first, number_index, ofColor(180), ofColor(180, 0));

}

ofPopMatrix();

for (auto& number : this->number_list) {

if (number.second > 0) {

int number_index = ofMap(ofNoise(glm::vec3(number.first * 0.05, ofGetFrameNum() * 0.03)), 0, 1, 0, 10);

this->draw_digital(number.first, number_index, ofColor(0), ofColor(255));

}

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

void ofApp::draw_digital(glm::vec2 location, int number_index, ofColor fill_color, ofColor no_fill_color) {

vector<pair<glm::vec2, float>> part_list = {

make_pair<glm::vec2, float>(location + glm::vec2(0, -this->hexagon_height), 90),

make_pair<glm::vec2, float>(location + glm::vec2(this->hexagon_height * -0.5, this->hexagon_height * 0.5), 0),

make_pair<glm::vec2, float>(location + glm::vec2(this->hexagon_height * 0.5, this->hexagon_height * 0.5), 0),

make_pair<glm::vec2, float>(location + glm::vec2(0, 0), 90),

make_pair<glm::vec2, float>(location + glm::vec2(this->hexagon_height * -0.5, this->hexagon_height * -0.5), 0),

make_pair<glm::vec2, float>(location + glm::vec2(this->hexagon_height * 0.5, this->hexagon_height * -0.5), 0),

make_pair<glm::vec2, float>(location + glm::vec2(0, this->hexagon_height), 90)

};

vector<vector<int>> index_list = {

{ 0, 1, 2, 4, 5, 6 },

{ 2, 5 },

{ 0, 1, 3, 5, 6 },

{ 0, 2, 3, 5, 6 },

{ 2, 3, 4, 5 },

{ 0, 2, 3, 4, 6 },

{ 0, 1, 2, 3, 4, 6 },

{ 0, 2, 5 },

{ 0, 1, 2, 3, 4, 5, 6 },

{ 0, 2, 3, 4, 5, 6 },

};

for (auto& index : index_list[number_index]) {

this->draw_hexagon(part_list[index].first, part_list[index].second, fill_color, no_fill_color);

}

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

void ofApp::draw_hexagon(glm::vec2 location, float deg, ofColor fill_color, ofColor no_fill_color) {

ofPushMatrix();

ofTranslate(location);

ofRotate(deg);

vector<glm::vec2> vertices;

vertices.push_back(glm::vec2(this->hexagon_width * -0.4, this->hexagon_height * -0.4));

vertices.push_back(glm::vec2(this->hexagon_width * -0.4, this->hexagon_height * 0.4));

vertices.push_back(glm::vec2(0, this->hexagon_height * 0.5));

vertices.push_back(glm::vec2(this->hexagon_width * 0.4, this->hexagon_height * 0.4));

vertices.push_back(glm::vec2(this->hexagon_width * 0.4, this->hexagon_height * -0.4));

vertices.push_back(glm::vec2(0, this->hexagon_height * -0.5));

ofFill();

ofSetColor(fill_color);

ofBeginShape();

ofVertices(vertices);

ofEndShape(true);

ofNoFill();

ofSetColor(no_fill_color);

ofBeginShape();

ofVertices(vertices);

ofEndShape(true);

ofPopMatrix();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20220124

[ほしいものリスト]
Amazon

[ Sponsor Link ]

2022年1月23日

One-third circles. Draw by openFrameorks

[ Video ]

[ About ]
1/3サークルをたくさん書く。

Write a lot of 1/3 circles.

[ 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 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) {};

ofMesh face, frame;

};

#include "ofApp.h"

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

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

	ofBackground(0);
	ofSetLineWidth(0.5);

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

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

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

	float deg_span = 2;
	float len = 3;

	bool flag = true;
	int deg_len = 120;

	for (int radius = 20; radius < 720; radius += len) {

		int deg_start = ofMap(ofNoise(radius % 20, ofGetFrameNum() * 0.0035), 0, 1, -360, 360);
		if (flag) {

			deg_start += 180;
		}
		flag = !flag;

		for (float deg = deg_start; deg <= deg_start + deg_len; deg += 1) {

			vector<glm::vec3> vertices;
			vertices.push_back(glm::vec3((radius + len * 0.5) * cos((deg + deg_span * 0.5) * DEG_TO_RAD), (radius + len * 0.5) * sin((deg + deg_span * 0.5) * DEG_TO_RAD), 0));
			vertices.push_back(glm::vec3((radius - len * 0.5) * cos((deg + deg_span * 0.5) * DEG_TO_RAD), (radius - len * 0.5) * sin((deg + deg_span * 0.5) * DEG_TO_RAD), 0));
			vertices.push_back(glm::vec3((radius - len * 0.5) * cos((deg - deg_span * 0.5) * DEG_TO_RAD), (radius - len * 0.5) * sin((deg - deg_span * 0.5) * DEG_TO_RAD), 0));
			vertices.push_back(glm::vec3((radius + len * 0.5) * cos((deg - deg_span * 0.5) * DEG_TO_RAD), (radius + len * 0.5) * sin((deg - deg_span * 0.5) * DEG_TO_RAD), 0));

			this->face.addVertices(vertices);
			this->frame.addVertices(vertices);

			this->face.addTriangle(this->face.getNumVertices() - 1, this->face.getNumVertices() - 2, this->face.getNumVertices() - 3);
			this->face.addTriangle(this->face.getNumVertices() - 1, this->face.getNumVertices() - 3, this->face.getNumVertices() - 4);
			
			this->frame.addIndex(this->frame.getNumVertices() - 1); this->frame.addIndex(this->frame.getNumVertices() - 4);
			this->frame.addIndex(this->frame.getNumVertices() - 2); this->frame.addIndex(this->frame.getNumVertices() - 3);

			if (deg == deg_start) {

				this->frame.addIndex(this->frame.getNumVertices() - 1); this->frame.addIndex(this->frame.getNumVertices() - 2);
			}
			else if(deg == deg_start + deg_len) {

				this->frame.addIndex(this->frame.getNumVertices() - 3); this->frame.addIndex(this->frame.getNumVertices() - 4);
			}
		}
	}
}

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

	ofTranslate(ofGetWindowSize() * 0.5);

	ofSetColor(255);
	this->face.draw();

	ofSetColor(0);
	this->frame.draw();
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(30);

ofSetWindowTitle("openFrameworks");

ofBackground(0);

ofSetLineWidth(0.5);

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

}

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

void ofApp::update() {

this->face.clear();

this->frame.clear();

float deg_span = 2;

float len = 3;

bool flag = true;

int deg_len = 120;

for (int radius = 20; radius < 720; radius += len) {

int deg_start = ofMap(ofNoise(radius % 20, ofGetFrameNum() * 0.0035), 0, 1, -360, 360);

if (flag) {

deg_start += 180;

}

flag = !flag;

for (float deg = deg_start; deg <= deg_start + deg_len; deg += 1) {

vector<glm::vec3> vertices;

vertices.push_back(glm::vec3((radius + len * 0.5) * cos((deg + deg_span * 0.5) * DEG_TO_RAD), (radius + len * 0.5) * sin((deg + deg_span * 0.5) * DEG_TO_RAD), 0));

vertices.push_back(glm::vec3((radius - len * 0.5) * cos((deg + deg_span * 0.5) * DEG_TO_RAD), (radius - len * 0.5) * sin((deg + deg_span * 0.5) * DEG_TO_RAD), 0));

vertices.push_back(glm::vec3((radius - len * 0.5) * cos((deg - deg_span * 0.5) * DEG_TO_RAD), (radius - len * 0.5) * sin((deg - deg_span * 0.5) * DEG_TO_RAD), 0));

vertices.push_back(glm::vec3((radius + len * 0.5) * cos((deg - deg_span * 0.5) * DEG_TO_RAD), (radius + len * 0.5) * sin((deg - deg_span * 0.5) * DEG_TO_RAD), 0));

this->face.addVertices(vertices);

this->frame.addVertices(vertices);

this->face.addTriangle(this->face.getNumVertices() - 1, this->face.getNumVertices() - 2, this->face.getNumVertices() - 3);

this->face.addTriangle(this->face.getNumVertices() - 1, this->face.getNumVertices() - 3, this->face.getNumVertices() - 4);

this->frame.addIndex(this->frame.getNumVertices() - 1); this->frame.addIndex(this->frame.getNumVertices() - 4);

this->frame.addIndex(this->frame.getNumVertices() - 2); this->frame.addIndex(this->frame.getNumVertices() - 3);

if (deg == deg_start) {

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

}

else if(deg == deg_start + deg_len) {

this->frame.addIndex(this->frame.getNumVertices() - 3); this->frame.addIndex(this->frame.getNumVertices() - 4);

}

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

void ofApp::draw() {

ofTranslate(ofGetWindowSize() * 0.5);

ofSetColor(255);

this->face.draw();

ofSetColor(0);

this->frame.draw();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20220123

[ほしいものリスト]
Amazon

[ Sponsor Link ]

2022年1月22日

Mille-feuille Torus. Draw by openFrameworks

[ Video ]

[ About ]
ミルフィーユなトーラス。

Mille-feuille Torus.

[ 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;
};

#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;

};

#include "ofApp.h"

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

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

	ofBackground(255);
	ofSetLineWidth(1);
	ofEnableDepthTest();
}

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

	ofSeedRandom(39);
}

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

	this->cam.begin();

	int v_span = 1;
	int u_span = 30;
	int R = 200;

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

	float noise_seed = ofRandom(1000);
	ofColor color;
	for (int r = 50; r >= 10; r -= 4) {

		color.setHsb(ofMap(r, 50, 10, 0, 128), 130, 255);

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

			bool flag = true;
			int u_start = ofMap(ofNoise(noise_seed, cos(v * DEG_TO_RAD) * 0.5, sin(v * DEG_TO_RAD) * 0.5, ofGetFrameNum() * 0.005), 0, 1, -720, 720);
			int next_u = ofMap(ofNoise(noise_seed, cos((v + v_span) * DEG_TO_RAD) * 0.5, sin((v + v_span) * DEG_TO_RAD) * 0.5, ofGetFrameNum() * 0.005), 0, 1, -720, 720);
			for (int u = u_start; u < u_start + 360; u += u_span) {

				if (flag) {

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

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

					ofColor face_color = ofColor(0);
					ofColor line_color = ofColor(255);

					color_flag = !color_flag;

					face.addColor(color);
					face.addColor(color);
					face.addColor(color);
					face.addColor(color);

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

					face.addIndex(face.getNumVertices() - 1); face.addIndex(face.getNumVertices() - 2); face.addIndex(face.getNumVertices() - 3);
					face.addIndex(face.getNumVertices() - 1); face.addIndex(face.getNumVertices() - 3); face.addIndex(face.getNumVertices() - 4);

					line.addIndex(line.getNumVertices() - 1); line.addIndex(line.getNumVertices() - 4);
					line.addIndex(line.getNumVertices() - 2); line.addIndex(line.getNumVertices() - 3);
				}

				next_u += u_span;
				flag = !flag;
			}
		}
	}

	face.drawFaces();
	line.drawWireframe();

	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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openframeworks");

ofBackground(255);

ofSetLineWidth(1);

ofEnableDepthTest();

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

this->cam.begin();

int v_span = 1;

int u_span = 30;

int R = 200;

ofMesh face, line;

line.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);

float noise_seed = ofRandom(1000);

ofColor color;

for (int r = 50; r >= 10; r -= 4) {

color.setHsb(ofMap(r, 50, 10, 0, 128), 130, 255);

auto color_flag = true;

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

bool flag = true;

int u_start = ofMap(ofNoise(noise_seed, cos(v * DEG_TO_RAD) * 0.5, sin(v * DEG_TO_RAD) * 0.5, ofGetFrameNum() * 0.005), 0, 1, -720, 720);

int next_u = ofMap(ofNoise(noise_seed, cos((v + v_span) * DEG_TO_RAD) * 0.5, sin((v + v_span) * DEG_TO_RAD) * 0.5, ofGetFrameNum() * 0.005), 0, 1, -720, 720);

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

if (flag) {

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

face.addVertex(this->make_point(R, r, u + u_span, v));

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

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

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

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

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

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

ofColor face_color = ofColor(0);

ofColor line_color = ofColor(255);

color_flag = !color_flag;

face.addColor(color);

line.addColor(line_color);

face.addIndex(face.getNumVertices() - 1); face.addIndex(face.getNumVertices() - 2); face.addIndex(face.getNumVertices() - 3);

face.addIndex(face.getNumVertices() - 1); face.addIndex(face.getNumVertices() - 3); face.addIndex(face.getNumVertices() - 4);

line.addIndex(line.getNumVertices() - 1); line.addIndex(line.getNumVertices() - 4);

line.addIndex(line.getNumVertices() - 2); line.addIndex(line.getNumVertices() - 3);

}

next_u += u_span;

flag = !flag;

}

face.drawFaces();

line.drawWireframe();

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/Insta20220122

[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