Tri-Channel Sphere. – プログラミング de 落描き

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三チャンネルの球体。

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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) {};

	ofEasyCam cam;
	ofMesh face, line;
};

#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 face, line;

};

#include "ofApp.h"

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

	ofSetFrameRate(25);
	ofSetWindowTitle("openFrameworks");

	ofBackground(39);
	ofSetLineWidth(2);
	ofEnableDepthTest();

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

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

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

	float phi_deg_step = 0.25;
	float theta_deg_step = 0.25;
	float noise_threshold_1 = 0.48;
	float noise_threshold_2 = 0.52;
	float noise_span = 1.2;

	ofColor line_color, face_color;

	for (float radius = 270; radius >= 230; radius -= 20) {

		line_color.setHsb(ofMap(radius, 270, 210, 0, 255), 255, 255);
		face_color.setHsb(ofMap(radius, 270, 210, 0, 255), 255, 255, 64);

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

			for (float theta_deg = 0; theta_deg <= 180; theta_deg += theta_deg_step) {

				auto noise_value = ofNoise(
					cos(phi_deg * DEG_TO_RAD) * noise_span,
					sin(phi_deg * DEG_TO_RAD) * noise_span,
					cos(theta_deg * DEG_TO_RAD) * noise_span,
					radius * 0.25 + ofGetFrameNum() * 0.01);

				if (noise_value < noise_threshold_1 || noise_value > noise_threshold_2) { continue; }

				auto noise_value_1 = ofNoise(
					cos(phi_deg * DEG_TO_RAD) * noise_span,
					sin(phi_deg * DEG_TO_RAD) * noise_span,
					cos((theta_deg - theta_deg_step) * DEG_TO_RAD) * noise_span,
					radius * 0.25 + ofGetFrameNum() * 0.01);
				auto noise_value_2 = ofNoise(
					cos((phi_deg + phi_deg_step) * DEG_TO_RAD) * noise_span,
					sin((phi_deg + phi_deg_step) * DEG_TO_RAD) * noise_span,
					cos(theta_deg * DEG_TO_RAD) * noise_span,
					radius * 0.25 + ofGetFrameNum() * 0.01);
				auto noise_value_3 = ofNoise(
					cos((phi_deg - phi_deg_step) * DEG_TO_RAD) * noise_span,
					sin((phi_deg - phi_deg_step) * DEG_TO_RAD) * noise_span,
					cos(theta_deg * DEG_TO_RAD) * noise_span,
					radius * 0.25 + ofGetFrameNum() * 0.01);
				auto noise_value_4 = ofNoise(
					cos(phi_deg * DEG_TO_RAD) * noise_span,
					sin(phi_deg * DEG_TO_RAD) * noise_span,
					cos((theta_deg + theta_deg_step) * DEG_TO_RAD) * noise_span,
					radius * 0.25 + ofGetFrameNum() * 0.01);

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

				vertices.push_back(glm::vec3(
					radius * sin((theta_deg - theta_deg_step * 0.5) * DEG_TO_RAD) * cos((phi_deg + phi_deg_step * 0.5) * DEG_TO_RAD),
					radius * sin((theta_deg - theta_deg_step * 0.5) * DEG_TO_RAD) * sin((phi_deg + phi_deg_step * 0.5) * DEG_TO_RAD),
					radius * cos((theta_deg - theta_deg_step * 0.5) * DEG_TO_RAD)));
				vertices.push_back(glm::vec3(
					radius * sin((theta_deg - theta_deg_step * 0.5) * DEG_TO_RAD) * cos((phi_deg - phi_deg_step * 0.5) * DEG_TO_RAD),
					radius * sin((theta_deg - theta_deg_step * 0.5) * DEG_TO_RAD) * sin((phi_deg - phi_deg_step * 0.5) * DEG_TO_RAD),
					radius * cos((theta_deg - theta_deg_step * 0.5) * DEG_TO_RAD)));
				vertices.push_back(glm::vec3(
					radius * sin((theta_deg + theta_deg_step * 0.5) * DEG_TO_RAD) * cos((phi_deg + phi_deg_step * 0.5) * DEG_TO_RAD),
					radius * sin((theta_deg + theta_deg_step * 0.5) * DEG_TO_RAD) * sin((phi_deg + phi_deg_step * 0.5) * DEG_TO_RAD),
					radius * cos((theta_deg + theta_deg_step * 0.5) * DEG_TO_RAD)));
				vertices.push_back(glm::vec3(
					radius * sin((theta_deg + theta_deg_step * 0.5) * DEG_TO_RAD) * cos((phi_deg - phi_deg_step * 0.5) * DEG_TO_RAD),
					radius * sin((theta_deg + theta_deg_step * 0.5) * DEG_TO_RAD) * sin((phi_deg - phi_deg_step * 0.5) * DEG_TO_RAD),
					radius * cos((theta_deg + theta_deg_step * 0.5) * DEG_TO_RAD)));

				this->face.addVertices(vertices);

				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_value_1 < noise_threshold_1 || noise_value_1 > noise_threshold_2) {

					this->line.addVertex(vertices[0]); this->line.addVertex(vertices[1]);
					this->line.addIndex(this->line.getNumVertices() - 1); this->line.addIndex(this->line.getNumVertices() - 2);
					this->line.addColor(line_color); this->line.addColor(line_color);
				}

				if (noise_value_2 < noise_threshold_1 || noise_value_2 > noise_threshold_2) {

					this->line.addVertex(vertices[0]); this->line.addVertex(vertices[2]);
					this->line.addIndex(this->line.getNumVertices() - 1); this->line.addIndex(this->line.getNumVertices() - 2);
					this->line.addColor(line_color); this->line.addColor(line_color);
				}

				if (noise_value_3 < noise_threshold_1 || noise_value_3 > noise_threshold_2) {

					this->line.addVertex(vertices[1]); this->line.addVertex(vertices[3]);
					this->line.addIndex(this->line.getNumVertices() - 1); this->line.addIndex(this->line.getNumVertices() - 2);
					this->line.addColor(line_color); this->line.addColor(line_color);
				}

				if (noise_value_4 < noise_threshold_1 || noise_value_4 > noise_threshold_2) {

					this->line.addVertex(vertices[2]); this->line.addVertex(vertices[3]);
					this->line.addIndex(this->line.getNumVertices() - 1); this->line.addIndex(this->line.getNumVertices() - 2);
					this->line.addColor(line_color); this->line.addColor(line_color);
				}

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

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

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

	this->cam.begin();
	ofRotateX(270);
	ofRotateZ(ofGetFrameNum());

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

	this->cam.end();

	/*
	// ffmpeg -i img_%04d.jpg aaa.mp4
	int start = 2;
	if (ofGetFrameNum() > start) {

		std::ostringstream os;
		os << std::setw(4) << std::setfill('0') << ofGetFrameNum() - start;
		ofImage image;
		image.grabScreen(0, 0, ofGetWidth(), ofGetHeight());
		image.saveImage("image/cap/img_" + os.str() + ".jpg");
		if (ofGetFrameNum() - start >= 25 * 20) {

			std::exit(1);
		}
	}
	*/
}

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

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

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#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(25);

ofSetWindowTitle("openFrameworks");

ofBackground(39);

ofSetLineWidth(2);

ofEnableDepthTest();

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

}

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

void ofApp::update() {

this->face.clear();

this->line.clear();

float phi_deg_step = 0.25;

float theta_deg_step = 0.25;

float noise_threshold_1 = 0.48;

float noise_threshold_2 = 0.52;

float noise_span = 1.2;

ofColor line_color, face_color;

for (float radius = 270; radius >= 230; radius -= 20) {

line_color.setHsb(ofMap(radius, 270, 210, 0, 255), 255, 255);

face_color.setHsb(ofMap(radius, 270, 210, 0, 255), 255, 255, 64);

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

for (float theta_deg = 0; theta_deg <= 180; theta_deg += theta_deg_step) {

auto noise_value = ofNoise(

cos(phi_deg * DEG_TO_RAD) * noise_span,

sin(phi_deg * DEG_TO_RAD) * noise_span,

cos(theta_deg * DEG_TO_RAD) * noise_span,