sphere – ページ 57 – プログラミング de 落描き

2019年6月23日2019年6月23日

Sphere fall apart. openFrameworks

[ Video ]

[ About ]
IcoSphereから面情報を取得、フレーム数をパラメータにバラバラにする。

Getting mesh from IcoSphere. Changing radius by frame count.

[ 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) {};

	vector<ofMeshFace> triangles;
	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 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) {};

vector<ofMeshFace> triangles;

ofEasyCam cam;

};

#include "ofApp.h"	

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

	ofSetFrameRate(60);
	ofSetWindowTitle("openFrameworks");

	ofBackground(239);
	ofSetLineWidth(2);
	ofEnableDepthTest();

	auto ico_sphere = ofIcoSpherePrimitive(150, 2);
	this->triangles = ico_sphere.getMesh().getUniqueFaces();
}

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

	ofSeedRandom(39);
}

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

	this->cam.begin();
	ofRotateY(ofGetFrameNum() * 0.5);

	for (auto& triangle : this->triangles) {

		auto avg = glm::vec3(triangle.getVertex(0) + triangle.getVertex(1) + triangle.getVertex(2)) / 3;
		auto param = (int)(ofRandom(750) + ofGetFrameNum()) % 750;
		auto tmp_radius = 150;
		auto rotate = 0;
		auto alpha = 255.f;
		if (param > 600) {

			tmp_radius = ofMap(param, 600, 750, 150, 300);
			rotate = ofMap(param, 600, 750, 0, 360);
			alpha = rotate = ofMap(param, 600, 750, 255, 0);
		}
		else if (param < 150) {

			alpha = ofMap(param, 0, 150, 0, 255);
		}

		auto tmp_avg = glm::normalize(avg) * tmp_radius;

		ofPushMatrix();
		ofTranslate(tmp_avg);
		ofRotateX(rotate);
		ofRotateY(rotate);

		vector<glm::vec3> vertices;
		vector<glm::vec3> fill_vertices;
		for (int j = 0; j < 3; j++) {

			glm::vec3 location = glm::vec3(triangle.getVertex(j).x, triangle.getVertex(j).y, triangle.getVertex(j).z) - avg;

			vertices.push_back(location);
			fill_vertices.push_back(location * 0.98);
		}

		ofFill();
		ofSetColor(239, alpha);
		ofBeginShape();
		ofVertices(fill_vertices);
		ofEndShape(true);

		ofNoFill();
		ofSetColor(39, alpha);
		ofBeginShape();
		ofVertices(vertices);
		ofEndShape(true);

		ofPopMatrix();
	}

	this->cam.end();
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openFrameworks");

ofBackground(239);

ofSetLineWidth(2);

ofEnableDepthTest();

auto ico_sphere = ofIcoSpherePrimitive(150, 2);

this->triangles = ico_sphere.getMesh().getUniqueFaces();

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateY(ofGetFrameNum() * 0.5);

for (auto& triangle : this->triangles) {

auto avg = glm::vec3(triangle.getVertex(0) + triangle.getVertex(1) + triangle.getVertex(2)) / 3;

auto param = (int)(ofRandom(750) + ofGetFrameNum()) % 750;

auto tmp_radius = 150;

auto rotate = 0;

auto alpha = 255.f;

if (param > 600) {

tmp_radius = ofMap(param, 600, 750, 150, 300);

rotate = ofMap(param, 600, 750, 0, 360);

alpha = rotate = ofMap(param, 600, 750, 255, 0);

}

else if (param < 150) {

alpha = ofMap(param, 0, 150, 0, 255);

}

auto tmp_avg = glm::normalize(avg) * tmp_radius;

ofPushMatrix();

ofTranslate(tmp_avg);

ofRotateX(rotate);

ofRotateY(rotate);

vector<glm::vec3> vertices;

vector<glm::vec3> fill_vertices;

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

glm::vec3 location = glm::vec3(triangle.getVertex(j).x, triangle.getVertex(j).y, triangle.getVertex(j).z) - avg;

vertices.push_back(location);

fill_vertices.push_back(location * 0.98);

}

ofFill();

ofSetColor(239, alpha);

ofBeginShape();

ofVertices(fill_vertices);

ofEndShape(true);

ofNoFill();

ofSetColor(39, alpha);

ofBeginShape();

ofVertices(vertices);

ofEndShape(true);

ofPopMatrix();

}

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20190623

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2019年6月14日2019年6月14日

Particle in torus. openFrameworks

[ Video ]

[ About ]
タピオカがインスタ映えすると聞いたのでタピオカ・トーラスしてみまいた。

Particle in 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 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) {};

	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 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) {};

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(239);
	ofSetColor(39);
	ofSetLineWidth(2);
	ofEnableDepthTest();
}

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

	ofSeedRandom(39);
}

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

	this->cam.begin();

	auto R = 300.f;
	auto r = 100.f;
	auto u = 0.f;
	auto u_step = 10.f;
	auto v_step = 5.f;
	ofColor color;

	for (int i = 0; i < 9; i++) {

		auto v_start = i * 20;
		vector<glm::vec3> vertices;
		for (auto v = v_start; v < v_start + 360; v += v_step) {

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

			ofFill();
			ofSetColor(239);
			ofBeginShape();
			ofVertices(vertices);
			ofEndShape(true);

			ofSetColor(39);
			ofDrawLine(this->make_point(R, r, u + 0.5, v), this->make_point(R, r, u + u_step + 0.5, v + v_step));
			ofDrawLine(this->make_point(R, r, u - 0.5, v + v_step), this->make_point(R, r, u - u_step - 0.5, v));

			u += u_step;
		}
	}

	auto frame_count = ofGetFrameNum();
	for (int i = 0; i < 30; i++) {

		auto tmp_r = ofRandom(20, r - 20);
		auto tmp_u = ofRandom(360) + frame_count * ofRandom(0.5, 1.0);
		auto tmp_v = ofRandom(360) + frame_count * ofRandom(0.5, 1.0);

		ofDrawSphere(this->make_point(R, tmp_r, tmp_u, tmp_v), 10);
	}

	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());
}

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openframeworks");

ofBackground(239);

ofSetColor(39);

ofSetLineWidth(2);

ofEnableDepthTest();

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

this->cam.begin();

auto R = 300.f;

auto r = 100.f;

auto u = 0.f;

auto u_step = 10.f;

auto v_step = 5.f;

ofColor color;

for (int i = 0; i < 9; i++) {

auto v_start = i * 20;

vector<glm::vec3> vertices;

for (auto v = v_start; v < v_start + 360; v += v_step) {

vertices.clear();

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

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

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

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

ofFill();

ofSetColor(239);

ofBeginShape();

ofVertices(vertices);

ofEndShape(true);

ofSetColor(39);

ofDrawLine(this->make_point(R, r, u + 0.5, v), this->make_point(R, r, u + u_step + 0.5, v + v_step));

ofDrawLine(this->make_point(R, r, u - 0.5, v + v_step), this->make_point(R, r, u - u_step - 0.5, v));

u += u_step;

}

auto frame_count = ofGetFrameNum();

for (int i = 0; i < 30; i++) {

auto tmp_r = ofRandom(20, r - 20);

auto tmp_u = ofRandom(360) + frame_count * ofRandom(0.5, 1.0);

auto tmp_v = ofRandom(360) + frame_count * ofRandom(0.5, 1.0);

ofDrawSphere(this->make_point(R, tmp_r, tmp_u, tmp_v), 10);

}

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/Insta20190614

[ほしいものリスト]
Amazon

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2019年5月29日2019年5月29日

Sphere moving log. openFrameworks

[ Video ]

[ About ]
球体の移動ログを輪っかで表す。

Sphere moving log.

[ 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) {};
};

#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) {};

};

#include "ofApp.h"

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

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

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

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

	ofSeedRandom(39);
}

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

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

		auto noise_seed = glm::vec2(ofRandom(1000), ofRandom(1000));
		auto radius = 50;
		auto len = 15;
		auto noise_step = 0.005;
		auto frame_scale = 3;
		auto base = glm::vec3(ofMap(ofNoise(noise_seed.x, (ofGetFrameNum() + len * frame_scale) * noise_step), 0, 1, 0, ofGetWidth()), ofMap(ofNoise(noise_seed.y, (ofGetFrameNum() + len * frame_scale) * noise_step), 0, 1, n * 360, (n + 1) * 360), 0);

		ofFill();
		ofSetColor(139);
		ofDrawSphere(base, radius);

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

			base = glm::vec3(ofMap(ofNoise(noise_seed.x, (ofGetFrameNum() + i * frame_scale) * noise_step), 0, 1, 0, ofGetWidth()), ofMap(ofNoise(noise_seed.y, (ofGetFrameNum() + i * frame_scale) * noise_step), 0, 1, n * 360, (n + 1) * 360), 0);
			auto prev_base = glm::vec3(ofMap(ofNoise(noise_seed.x, (ofGetFrameNum() + i * frame_scale - 1) * noise_step), 0, 1, 0, ofGetWidth()), ofMap(ofNoise(noise_seed.y, (ofGetFrameNum() + i * frame_scale - 1) * noise_step), 0, 1, n * 360, (n + 1) * 360), 0);
			auto direction = base - prev_base;
			auto theta = atan2(direction.y, direction.x);

			ofNoFill();
			ofSetColor(39, ofMap(i, 0, len, 32, 255));
			ofBeginShape();
			for (int deg = 0; deg < 360; deg += 3) {

				auto point = glm::vec3(radius * 1.2 * cos(deg * DEG_TO_RAD), radius * 1.2 * sin(deg * DEG_TO_RAD), 0);
				auto rotation_x = glm::rotate(glm::mat4(), (float)(PI * 0.5), glm::vec3(1, 0, 0));
				auto rotation_y = glm::rotate(glm::mat4(), (float)(theta + PI * 0.5), glm::vec3(0, 1, 0));
				point = base + glm::vec4(point, 0) * rotation_y * rotation_x;

				ofVertex(point);
			}
			ofEndShape(true);
		}
	}
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openframeworks");

ofBackground(239);

ofSetLineWidth(3);

ofEnableDepthTest();

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

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

auto noise_seed = glm::vec2(ofRandom(1000), ofRandom(1000));

auto radius = 50;

auto len = 15;

auto noise_step = 0.005;

auto frame_scale = 3;

auto base = glm::vec3(ofMap(ofNoise(noise_seed.x, (ofGetFrameNum() + len * frame_scale) * noise_step), 0, 1, 0, ofGetWidth()), ofMap(ofNoise(noise_seed.y, (ofGetFrameNum() + len * frame_scale) * noise_step), 0, 1, n * 360, (n + 1) * 360), 0);

ofFill();

ofSetColor(139);

ofDrawSphere(base, radius);

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

base = glm::vec3(ofMap(ofNoise(noise_seed.x, (ofGetFrameNum() + i * frame_scale) * noise_step), 0, 1, 0, ofGetWidth()), ofMap(ofNoise(noise_seed.y, (ofGetFrameNum() + i * frame_scale) * noise_step), 0, 1, n * 360, (n + 1) * 360), 0);

auto prev_base = glm::vec3(ofMap(ofNoise(noise_seed.x, (ofGetFrameNum() + i * frame_scale - 1) * noise_step), 0, 1, 0, ofGetWidth()), ofMap(ofNoise(noise_seed.y, (ofGetFrameNum() + i * frame_scale - 1) * noise_step), 0, 1, n * 360, (n + 1) * 360), 0);

auto direction = base - prev_base;

auto theta = atan2(direction.y, direction.x);

ofNoFill();

ofSetColor(39, ofMap(i, 0, len, 32, 255));

ofBeginShape();

for (int deg = 0; deg < 360; deg += 3) {

auto point = glm::vec3(radius * 1.2 * cos(deg * DEG_TO_RAD), radius * 1.2 * sin(deg * DEG_TO_RAD), 0);

auto rotation_x = glm::rotate(glm::mat4(), (float)(PI * 0.5), glm::vec3(1, 0, 0));

auto rotation_y = glm::rotate(glm::mat4(), (float)(theta + PI * 0.5), glm::vec3(0, 1, 0));

point = base + glm::vec4(point, 0) * rotation_y * rotation_x;

ofVertex(point);

}

ofEndShape(true);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20190529

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