RandomWalk – ページ 30 – プログラミング de 落描き

2022年9月9日

3 color arrows. Draw by openFrameworks

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[ About ]
3色矢印。

[ 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 draw_arrow(glm::vec2 location, glm::vec2 target, float size, ofColor color);
};

#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 draw_arrow(glm::vec2 location, glm::vec2 target, float size, ofColor color);

};

#include "ofApp.h"

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

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

	ofBackground(255);
	ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_SUBTRACT);
}

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

	ofSeedRandom(39);
}

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

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

	vector<ofColor> color_list = { ofColor(255, 0, 0), ofColor(0, 255, 0), ofColor(0, 0, 255) };

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

		auto target = glm::vec2(ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.01), 0, 1, -450, 450), ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.01), 0, 1, -450, 450));

		for (int x = -300; x <= 300; x += 50) {

			for (int y = -300; y <= 300; y += 50) {

				this->draw_arrow(glm::vec2(x, y), target, 23, color_list[i]);
			}
		}
	}
}

//--------------------------------------------------------------
void ofApp::draw_arrow(glm::vec2 location, glm::vec2 target, float size, ofColor color) {

	auto angle = std::atan2(target.y - location.y, target.x - location.x);

	ofSetColor(color);
	ofFill();
	ofBeginShape();
	ofVertex(location + glm::vec2(size * cos(angle), size * sin(angle)));
	ofVertex(location + glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)));
	ofVertex(location + glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)));
	ofEndShape();

	ofBeginShape();
	ofVertex(location + glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.25);
	ofVertex(location + glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.25 - glm::vec2(size * cos(angle), size * sin(angle)) * 0.5);
	ofVertex(location + glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.25 - glm::vec2(size * cos(angle), size * sin(angle)) * 0.5);
	ofVertex(location + glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.25);
	ofEndShape();
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openframeworks");

ofBackground(255);

ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_SUBTRACT);

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

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

vector<ofColor> color_list = { ofColor(255, 0, 0), ofColor(0, 255, 0), ofColor(0, 0, 255) };

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

auto target = glm::vec2(ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.01), 0, 1, -450, 450), ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.01), 0, 1, -450, 450));

for (int x = -300; x <= 300; x += 50) {

for (int y = -300; y <= 300; y += 50) {

this->draw_arrow(glm::vec2(x, y), target, 23, color_list[i]);

}

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

void ofApp::draw_arrow(glm::vec2 location, glm::vec2 target, float size, ofColor color) {

auto angle = std::atan2(target.y - location.y, target.x - location.x);

ofSetColor(color);

ofFill();

ofBeginShape();

ofVertex(location + glm::vec2(size * cos(angle), size * sin(angle)));

ofVertex(location + glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)));

ofVertex(location + glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)));

ofEndShape();

ofBeginShape();

ofVertex(location + glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.25);

ofVertex(location + glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.25 - glm::vec2(size * cos(angle), size * sin(angle)) * 0.5);

ofVertex(location + glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.25 - glm::vec2(size * cos(angle), size * sin(angle)) * 0.5);

ofVertex(location + glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.25);

ofEndShape();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20220909

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2022年8月25日

Paint the torus. Draw by openFrameworks

[ Video ]

[ About ]
トーラスに色を塗る。

[ 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;
	ofMesh face_mesh, frame_mesh;

	vector<glm::vec3> location_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) {};

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

ofEasyCam cam;

ofMesh face_mesh, frame_mesh;

vector<glm::vec3> location_list;

vector<ofColor> color_list;

};

#include "ofApp.h"

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

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

	ofBackground(0);
	ofEnableDepthTest();

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

		for (auto u = 0; u < 360; u += 8) {

			this->location_list.push_back(this->make_point(200, 50, u, v));
			this->color_list.push_back(ofColor(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 = 50;
	auto v_span = 5;
	auto u_span = 8;

	for (int k = 0; k < 3; k++) {

		auto location = this->make_point(200, 50, ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.0065), 0, 1, -360, 360), ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.0065), 0, 1, -360, 360));

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

			auto distance = glm::distance(location, this->location_list[i]);

			if (distance < 50) {

				if (k == 0) {

					auto r = this->color_list[i].r + ofMap(distance, 0, 50, 0, 255);
					this->color_list[i].r = r < 255 ? r : 255;
				}
				else if(k == 1) {

					auto g = this->color_list[i].g + ofMap(distance, 0, 50, 0, 255);
					this->color_list[i].g = g < 255 ? g : 255;
				}
				else {

					auto b = this->color_list[i].b + ofMap(distance, 0, 50, 0, 255);
					this->color_list[i].b = b < 255 ? b : 255;
				}
			}
			else {

				if (k == 0) {

					auto r = this->color_list[i].r - 5;
					this->color_list[i].r = r > 0 ? r : 0;
				}
				else if (k == 1) {

					auto g = this->color_list[i].g - 5;
					this->color_list[i].g = g > 0 ? g : 0;
				}
				else {
					
					auto b = this->color_list[i].b - 5;
					this->color_list[i].b = b > 0 ? b : 0;
				}
			}
		}
	}

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

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

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

			// 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);

			// 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->face_mesh.addColor(this->color_list[color_index]);
			this->face_mesh.addColor(this->color_list[color_index]);
			this->face_mesh.addColor(this->color_list[color_index]);
			this->face_mesh.addColor(this->color_list[color_index]);

			color_index++;
		}
	}
}

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

	this->cam.begin();
	ofRotateY(ofGetFrameNum() * 0.6666666666666666);

	this->face_mesh.drawFaces();

	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());
}

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#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openframeworks");

ofBackground(0);

ofEnableDepthTest();

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

for (auto u = 0; u < 360; u += 8) {

this->location_list.push_back(this->make_point(200, 50, u, v));

this->color_list.push_back(ofColor(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 = 50;

auto v_span = 5;

auto u_span = 8;

for (int k = 0; k < 3; k++) {

auto location = this->make_point(200, 50, ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.0065), 0, 1, -360, 360), ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.0065), 0, 1, -360, 360));

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

auto distance = glm::distance(location, this->location_list[i]);

if (distance < 50) {

if (k == 0) {

auto r = this->color_list[i].r + ofMap(distance, 0, 50, 0, 255);

this->color_list[i].r = r < 255 ? r : 255;

}

else if(k == 1) {

auto g = this->color_list[i].g + ofMap(distance, 0, 50, 0, 255);

this->color_list[i].g = g < 255 ? g : 255;

}

else {

auto b = this->color_list[i].b + ofMap(distance, 0, 50, 0, 255);

this->color_list[i].b = b < 255 ? b : 255;

}

else {

if (k == 0) {

auto r = this->color_list[i].r - 5;

this->color_list[i].r = r > 0 ? r : 0;

}

else if (k == 1) {

auto g = this->color_list[i].g - 5;

this->color_list[i].g = g > 0 ? g : 0;

}

else {

auto b = this->color_list[i].b - 5;

this->color_list[i].b = b > 0 ? b : 0;

}

int color_index = 0;

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

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

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));

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

this->face_mesh.addVertices(vertices);

this->frame_mesh.addVertices(vertices);

// 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);

// 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->face_mesh.addColor(this->color_list[color_index]);

color_index++;

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateY(ofGetFrameNum() * 0.6666666666666666);

this->face_mesh.drawFaces();

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/Insta20220825

[ほしいものリスト]
Amazon

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2022年8月4日

Draw circle on center. Draw by openFrameworks

[ Video ]

[ About ]
中間点に円を描く。

Draw circle on center.

[ 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) {};
};

#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) {};

};

#include "ofApp.h"

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

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

	ofBackground(255);
	ofSetColor(0);
	ofSetLineWidth(2);
}

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

	ofSeedRandom(39);
}

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

	ofTranslate(ofGetWindowSize() * 0.5);

	vector<glm::vec2> location_list;
	for (int i = 0; i < 80; i++) {

		auto location = glm::vec2(ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.0015), 0, 1, -500, 500), ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.0015), 0, 1, -500, 500));
		location_list.push_back(location);
	}

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

		ofFill();
		ofDrawCircle(location_list[i], 8);
		for (int k = i + 1; k < location_list.size(); k++) {

			auto distance = glm::distance(location_list[i], location_list[k]);
			if (distance < 100) {

				auto center = location_list[i] + ((location_list[k] - location_list[i]) / 2);
				auto i_center = location_list[i] + ((location_list[k] - location_list[i]) / 2) * (distance - 12) / distance;
				auto k_center = location_list[k] + ((location_list[i] - location_list[k]) / 2) * (distance - 12) / distance;;

				ofDrawLine(location_list[i], i_center);

				auto rad_start = std::atan2(location_list[i].y - location_list[k].y, location_list[i].x - location_list[k].x) - PI * 0.5;

				ofNoFill();
				ofBeginShape();
				for (auto rad = rad_start; rad < rad_start + PI; rad += PI / 180) {

					ofVertex(center + glm::vec2(6 * cos(rad), 6 * sin(rad)));
				}
				ofEndShape();

				ofDrawLine(location_list[k], k_center);

				rad_start = std::atan2(location_list[k].y - location_list[i].y, location_list[k].x - location_list[i].x) - PI * 0.5;

				ofNoFill();
				ofBeginShape();
				for (auto rad = rad_start; rad < rad_start + PI; rad += PI / 180) {

					ofVertex(center + glm::vec2(6 * cos(rad), 6 * sin(rad)));
				}
				ofEndShape();
			}
		}
	}
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(30);

ofSetWindowTitle("openframeworks");

ofBackground(255);

ofSetColor(0);

ofSetLineWidth(2);

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

ofTranslate(ofGetWindowSize() * 0.5);

vector<glm::vec2> location_list;

for (int i = 0; i < 80; i++) {

auto location = glm::vec2(ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.0015), 0, 1, -500, 500), ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.0015), 0, 1, -500, 500));

location_list.push_back(location);

}

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

ofFill();

ofDrawCircle(location_list[i], 8);

for (int k = i + 1; k < location_list.size(); k++) {

auto distance = glm::distance(location_list[i], location_list[k]);

if (distance < 100) {

auto center = location_list[i] + ((location_list[k] - location_list[i]) / 2);

auto i_center = location_list[i] + ((location_list[k] - location_list[i]) / 2) * (distance - 12) / distance;

auto k_center = location_list[k] + ((location_list[i] - location_list[k]) / 2) * (distance - 12) / distance;;

ofDrawLine(location_list[i], i_center);

auto rad_start = std::atan2(location_list[i].y - location_list[k].y, location_list[i].x - location_list[k].x) - PI * 0.5;

ofNoFill();

ofBeginShape();

for (auto rad = rad_start; rad < rad_start + PI; rad += PI / 180) {

ofVertex(center + glm::vec2(6 * cos(rad), 6 * sin(rad)));

}

ofEndShape();

ofDrawLine(location_list[k], k_center);

rad_start = std::atan2(location_list[k].y - location_list[i].y, location_list[k].x - location_list[i].x) - PI * 0.5;

ofNoFill();

ofBeginShape();

for (auto rad = rad_start; rad < rad_start + PI; rad += PI / 180) {

ofVertex(center + glm::vec2(6 * cos(rad), 6 * sin(rad)));

}

ofEndShape();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20220804

[ほしいものリスト]
Amazon

[ Sponsor Link ]

2024年4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