ofMesh – ページ 47 – プログラミング de 落描き

2022年9月14日2022年9月14日

Cobweb. Draw by openFrameworks

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正方形の中を結ぶ。

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#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 mesh;
};

#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 mesh;

};

#include "ofApp.h"

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

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

	ofBackground(0);
	ofEnableDepthTest();

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

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

	ofSeedRandom(39);

	vector<float> min_distance_list;
	this->mesh.clear();

	for (int i = 0; i < 2800; i++) {

		auto vertex = glm::vec3(
			ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.001), 0, 1, -300, 300),
			ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.001), 0, 1, -300, 300),
			ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.001), 0, 1, -300, 300));
		this->mesh.addVertex(vertex);
		min_distance_list.push_back(20);
	}

	for (auto& vertex : this->mesh.getVertices()) {

		vertex.x = vertex.x < -150 ? -150 : vertex.x > 150 ? 150 : vertex.x;
		vertex.y = vertex.y < -150 ? -150 : vertex.y > 150 ? 150 : vertex.y;
		vertex.z = vertex.z < -150 ? -150 : vertex.z > 150 ? 150 : vertex.z;
	}


	for (int i = 0; i < this->mesh.getNumVertices(); i++) {

		for (int k = 0; k < this->mesh.getNumVertices(); k++) {

			if (i == k) { continue; }

			auto distance = glm::distance(this->mesh.getVertex(i), this->mesh.getVertex(k));
			if (distance < 20) {

				this->mesh.addIndex(i);
				this->mesh.addIndex(k);

				if (distance < min_distance_list[i]) {

					min_distance_list[i] = distance;
				}
			}
		}

		this->mesh.addColor(ofColor(255, ofMap(min_distance_list[i], 0, 20, 255, 0)));
	}
}

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

	this->cam.begin();

	ofRotateY(ofGetFrameNum());

	this->mesh.draw();

	for (int i = 0; i < this->mesh.getNumVertices(); i++) {

		ofSetColor(this->mesh.getColor(i));
		ofDrawSphere(this->mesh.getVertex(i), 1.5);
	}

	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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(30);

ofSetWindowTitle("openFrameworks");

ofBackground(0);

ofEnableDepthTest();

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

}

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

void ofApp::update() {

ofSeedRandom(39);

vector<float> min_distance_list;

this->mesh.clear();

for (int i = 0; i < 2800; i++) {

auto vertex = glm::vec3(

ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.001), 0, 1, -300, 300),

ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.001), 0, 1, -300, 300));

this->mesh.addVertex(vertex);

min_distance_list.push_back(20);

}

for (auto& vertex : this->mesh.getVertices()) {

vertex.x = vertex.x < -150 ? -150 : vertex.x > 150 ? 150 : vertex.x;

vertex.y = vertex.y < -150 ? -150 : vertex.y > 150 ? 150 : vertex.y;

vertex.z = vertex.z < -150 ? -150 : vertex.z > 150 ? 150 : vertex.z;

}

for (int i = 0; i < this->mesh.getNumVertices(); i++) {

for (int k = 0; k < this->mesh.getNumVertices(); k++) {

if (i == k) { continue; }

auto distance = glm::distance(this->mesh.getVertex(i), this->mesh.getVertex(k));

if (distance < 20) {

this->mesh.addIndex(i);

this->mesh.addIndex(k);

if (distance < min_distance_list[i]) {

min_distance_list[i] = distance;

}

this->mesh.addColor(ofColor(255, ofMap(min_distance_list[i], 0, 20, 255, 0)));

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateY(ofGetFrameNum());

this->mesh.draw();

for (int i = 0; i < this->mesh.getNumVertices(); i++) {

ofSetColor(this->mesh.getColor(i));

ofDrawSphere(this->mesh.getVertex(i), 1.5);

}

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 ]
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2022年9月13日

Vertex of torus. Draw by openFrameworks

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[ About ]
トーラスの頂点をぐーるぐる。

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#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 mesh;
};

#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 mesh;

};

#include "ofApp.h"

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

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

	ofBackground(0);
	ofSetLineWidth(2);
	ofEnableDepthTest();

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

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

	ofSeedRandom(39);

	this->mesh.clear();

	float phi_deg_step = 3;
	float theta_deg_step = 2;
	float R = 250;
	float r = 50;
	float threshold = 0.52;
	float phi_seed = ofRandom(1000);
	float theta_seed = ofRandom(2000, 3000);

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

		for (float theta_deg = 0; theta_deg < 90; theta_deg += theta_deg_step) {

			auto vertex = this->make_point(R, r, theta_deg, phi_deg);
			auto phi_param = ofMap(ofNoise(glm::vec4(vertex * 0.003, phi_seed + ofGetFrameNum() * 0.004)), 0, 1, -180, 180);
			auto theta_param = ofMap(ofNoise(glm::vec4(vertex * 0.03,  theta_seed + ofGetFrameNum() * 0.004)), 0, 1, -360, 360);

			this->mesh.addVertex(this->make_point(R, r, theta_deg + theta_param, phi_deg + phi_param));
		}
	}
}

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

	this->cam.begin();
	ofRotateZ(ofGetFrameNum() * 0.1);

	this->mesh.drawVertices();

	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(0);

ofSetLineWidth(2);

ofEnableDepthTest();

//this->mesh.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);

}

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

void ofApp::update() {

ofSeedRandom(39);

this->mesh.clear();

float phi_deg_step = 3;

float theta_deg_step = 2;

float R = 250;

float r = 50;

float threshold = 0.52;

float phi_seed = ofRandom(1000);

float theta_seed = ofRandom(2000, 3000);

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

for (float theta_deg = 0; theta_deg < 90; theta_deg += theta_deg_step) {

auto vertex = this->make_point(R, r, theta_deg, phi_deg);

auto phi_param = ofMap(ofNoise(glm::vec4(vertex * 0.003, phi_seed + ofGetFrameNum() * 0.004)), 0, 1, -180, 180);

auto theta_param = ofMap(ofNoise(glm::vec4(vertex * 0.03, theta_seed + ofGetFrameNum() * 0.004)), 0, 1, -360, 360);

this->mesh.addVertex(this->make_point(R, r, theta_deg + theta_param, phi_deg + phi_param));

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateZ(ofGetFrameNum() * 0.1);

this->mesh.drawVertices();

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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2022年9月12日

Orbs. Draw by openFrameworks

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[ About ]
オーブ。

[ 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) {};

	ofEasyCam cam;
	ofMesh mesh, frame;

	vector<ofMeshFace> triangle_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) {};

ofEasyCam cam;

ofMesh mesh, frame;

vector<ofMeshFace> triangle_list;

};

#include "ofApp.h"

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

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

	ofBackground(0);
	ofEnableDepthTest();

	auto ico_sphere = ofIcoSpherePrimitive(300, 4);
	this->triangle_list.insert(this->triangle_list.end(), ico_sphere.getMesh().getUniqueFaces().begin(), ico_sphere.getMesh().getUniqueFaces().end());

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

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

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

	for (int radius = 150; radius < 300; radius += 5) {

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

			glm::vec3 avg = (this->triangle_list[i].getVertex(0) + this->triangle_list[i].getVertex(1) + this->triangle_list[i].getVertex(2)) / 3;
			auto noise_value = ofNoise(avg.y * 0.005 + ofGetFrameNum() * 0.035, avg.x * 0.005, avg.z * 0.005);

			if (noise_value < 0.4 || noise_value > 0.6) { continue; }

			vector<glm::vec3> vertices;

			vertices.push_back(glm::normalize(this->triangle_list[i].getVertex(0)) * radius);
			vertices.push_back(glm::normalize(this->triangle_list[i].getVertex(1)) * radius);
			vertices.push_back(glm::normalize(this->triangle_list[i].getVertex(2)) * radius);

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

			for (int k = 0; k < vertices.size(); k++) {

				this->mesh.addColor(ofColor(ofMap(radius, 150, 300, 255, 0)));
				this->frame.addColor(ofColor(ofMap(radius, 150, 300, 255, 0)));
			}

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

			this->frame.addIndex(this->frame.getNumVertices() - 1); this->frame.addIndex(this->frame.getNumVertices() - 2);
			this->frame.addIndex(this->frame.getNumVertices() - 2); this->frame.addIndex(this->frame.getNumVertices() - 3);
			this->frame.addIndex(this->frame.getNumVertices() - 3); this->frame.addIndex(this->frame.getNumVertices() - 1);
		}
	}
}

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

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

	this->mesh.draw();
	this->frame.drawWireframe();

	ofSetColor(255);
	ofDrawSphere(50);

	this->cam.end();
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(30);

ofSetWindowTitle("openFrameworks");

ofBackground(0);

ofEnableDepthTest();

auto ico_sphere = ofIcoSpherePrimitive(300, 4);

this->triangle_list.insert(this->triangle_list.end(), ico_sphere.getMesh().getUniqueFaces().begin(), ico_sphere.getMesh().getUniqueFaces().end());

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

}

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

void ofApp::update() {

this->mesh.clear();

this->frame.clear();

for (int radius = 150; radius < 300; radius += 5) {

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

glm::vec3 avg = (this->triangle_list[i].getVertex(0) + this->triangle_list[i].getVertex(1) + this->triangle_list[i].getVertex(2)) / 3;

auto noise_value = ofNoise(avg.y * 0.005 + ofGetFrameNum() * 0.035, avg.x * 0.005, avg.z * 0.005);

if (noise_value < 0.4 || noise_value > 0.6) { continue; }

vector<glm::vec3> vertices;

vertices.push_back(glm::normalize(this->triangle_list[i].getVertex(0)) * radius);

vertices.push_back(glm::normalize(this->triangle_list[i].getVertex(1)) * radius);

vertices.push_back(glm::normalize(this->triangle_list[i].getVertex(2)) * radius);

this->mesh.addVertices(vertices);

this->frame.addVertices(vertices);

for (int k = 0; k < vertices.size(); k++) {

this->mesh.addColor(ofColor(ofMap(radius, 150, 300, 255, 0)));

this->frame.addColor(ofColor(ofMap(radius, 150, 300, 255, 0)));

}

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

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

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

this->frame.addIndex(this->frame.getNumVertices() - 3); this->frame.addIndex(this->frame.getNumVertices() - 1);

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateY(ofGetFrameNum());

this->mesh.draw();

this->frame.drawWireframe();

ofSetColor(255);

ofDrawSphere(50);

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
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