openframeworks – ページ 95 – プログラミング de 落描き

2022年11月30日

Crumpled torus. Draw by openFrameworks

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[ About ]
くしゃくしゃトーラス。

[ 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, 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) {};

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

ofEasyCam cam;

ofMesh face, line;

};

#include "ofApp.h"

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

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

	ofBackground(255);
	ofSetLineWidth(2);
	ofEnableDepthTest();

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

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

	ofSeedRandom(39);

	auto seed = glm::vec3(ofRandom(1000), ofRandom(1000), ofRandom(1000));

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

	float phi_deg_step = 1.5;
	float theta_deg_step = 6;

	float R = 240;
	float r = R * 0.25;

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

		for (float theta_deg = 0; theta_deg < 360; theta_deg += theta_deg_step) {

			auto noise_value = ofNoise(glm::vec4(this->make_point(R, r, theta_deg, phi_deg) * 0.035, ofGetFrameNum() * 0.025));
			if (noise_value < 0.45) { continue; }

			auto noise_1 = ofNoise(glm::vec4(this->make_point(R, r, theta_deg - theta_deg_step, phi_deg) * 0.035, ofGetFrameNum() * 0.025));
			auto noise_2 = ofNoise(glm::vec4(this->make_point(R, r, theta_deg, phi_deg + phi_deg_step) * 0.035, ofGetFrameNum() * 0.025));
			auto noise_3 = ofNoise(glm::vec4(this->make_point(R, r, theta_deg, phi_deg - phi_deg_step) * 0.035, ofGetFrameNum() * 0.025));
			auto noise_4 = ofNoise(glm::vec4(this->make_point(R, r, theta_deg + theta_deg_step, phi_deg) * 0.035, ofGetFrameNum() * 0.025));

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

			vertices.push_back(glm::vec3(this->make_point(R, r, theta_deg - theta_deg_step * 0.5, phi_deg - phi_deg_step * 0.5)));
			vertices.push_back(glm::vec3(this->make_point(R, r, theta_deg + theta_deg_step * 0.5, phi_deg - phi_deg_step * 0.5)));
			vertices.push_back(glm::vec3(this->make_point(R, r, theta_deg - theta_deg_step * 0.5, phi_deg + phi_deg_step * 0.5)));
			vertices.push_back(glm::vec3(this->make_point(R, r, theta_deg + theta_deg_step * 0.5, phi_deg + phi_deg_step * 0.5)));

			for (auto& vertex : vertices) {

				auto rotation = glm::vec3(
					ofMap(ofNoise(glm::vec4(vertex * 0.00085, seed.x + ofGetFrameNum() * 0.01)), 0, 1, -90, 90),
					ofMap(ofNoise(glm::vec4(vertex * 0.00085, seed.y + ofGetFrameNum() * 0.01)), 0, 1, -90, 90),
					ofMap(ofNoise(glm::vec4(vertex * 0.00085, seed.z + ofGetFrameNum() * 0.01)), 0, 1, -90, 90));

				auto rotation_x = glm::rotate(glm::mat4(), rotation.x * (float)DEG_TO_RAD, glm::vec3(1, 0, 0));
				auto rotation_y = glm::rotate(glm::mat4(), rotation.y * (float)DEG_TO_RAD, glm::vec3(0, 1, 0));
				auto rotation_z = glm::rotate(glm::mat4(), rotation.z * (float)DEG_TO_RAD, glm::vec3(0, 0, 1));

				vertex = glm::vec4(vertex, 0) * rotation_z * rotation_y * rotation_x;
			}

			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_1 < 0.45) {

				this->line.addVertex(vertices[0]);
				this->line.addVertex(vertices[2]);

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

			if (noise_2 < 0.45) {

				this->line.addVertex(vertices[2]);
				this->line.addVertex(vertices[3]);

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

			if (noise_3 < 0.45) {

				this->line.addVertex(vertices[0]);
				this->line.addVertex(vertices[1]);

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

			if (noise_4 < 0.45) {

				this->line.addVertex(vertices[1]);
				this->line.addVertex(vertices[3]);

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

			}
		}
	}
}

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

	this->cam.begin();
	ofRotateY(ofGetFrameNum() * 0.333333333333333 * 6);

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

	ofSetColor(0);
	this->face.draw();

	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(30);

ofSetWindowTitle("openFrameworks");

ofBackground(255);

ofSetLineWidth(2);

ofEnableDepthTest();

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

}

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

void ofApp::update() {

ofSeedRandom(39);

auto seed = glm::vec3(ofRandom(1000), ofRandom(1000), ofRandom(1000));

this->face.clear();

this->line.clear();

float phi_deg_step = 1.5;

float theta_deg_step = 6;

float R = 240;

float r = R * 0.25;

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

for (float theta_deg = 0; theta_deg < 360; theta_deg += theta_deg_step) {

auto noise_value = ofNoise(glm::vec4(this->make_point(R, r, theta_deg, phi_deg) * 0.035, ofGetFrameNum() * 0.025));

if (noise_value < 0.45) { continue; }

auto noise_1 = ofNoise(glm::vec4(this->make_point(R, r, theta_deg - theta_deg_step, phi_deg) * 0.035, ofGetFrameNum() * 0.025));

auto noise_2 = ofNoise(glm::vec4(this->make_point(R, r, theta_deg, phi_deg + phi_deg_step) * 0.035, ofGetFrameNum() * 0.025));

auto noise_3 = ofNoise(glm::vec4(this->make_point(R, r, theta_deg, phi_deg - phi_deg_step) * 0.035, ofGetFrameNum() * 0.025));

auto noise_4 = ofNoise(glm::vec4(this->make_point(R, r, theta_deg + theta_deg_step, phi_deg) * 0.035, ofGetFrameNum() * 0.025));

auto index = this->face.getNumVertices();

vector<glm::vec3> vertices;

vertices.push_back(glm::vec3(this->make_point(R, r, theta_deg - theta_deg_step * 0.5, phi_deg - phi_deg_step * 0.5)));

vertices.push_back(glm::vec3(this->make_point(R, r, theta_deg + theta_deg_step * 0.5, phi_deg - phi_deg_step * 0.5)));

vertices.push_back(glm::vec3(this->make_point(R, r, theta_deg - theta_deg_step * 0.5, phi_deg + phi_deg_step * 0.5)));

vertices.push_back(glm::vec3(this->make_point(R, r, theta_deg + theta_deg_step * 0.5, phi_deg + phi_deg_step * 0.5)));

for (auto& vertex : vertices) {

auto rotation = glm::vec3(

ofMap(ofNoise(glm::vec4(vertex * 0.00085, seed.x + ofGetFrameNum() * 0.01)), 0, 1, -90, 90),

ofMap(ofNoise(glm::vec4(vertex * 0.00085, seed.y + ofGetFrameNum() * 0.01)), 0, 1, -90, 90),

ofMap(ofNoise(glm::vec4(vertex * 0.00085, seed.z + ofGetFrameNum() * 0.01)), 0, 1, -90, 90));

auto rotation_x = glm::rotate(glm::mat4(), rotation.x * (float)DEG_TO_RAD, glm::vec3(1, 0, 0));

auto rotation_y = glm::rotate(glm::mat4(), rotation.y * (float)DEG_TO_RAD, glm::vec3(0, 1, 0));

auto rotation_z = glm::rotate(glm::mat4(), rotation.z * (float)DEG_TO_RAD, glm::vec3(0, 0, 1));

vertex = glm::vec4(vertex, 0) * rotation_z * rotation_y * rotation_x;

}

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_1 < 0.45) {

this->line.addVertex(vertices[0]);

this->line.addVertex(vertices[2]);

this->line.addIndex(this->line.getNumVertices() - 1);

this->line.addIndex(this->line.getNumVertices() - 2);

}

if (noise_2 < 0.45) {

this->line.addVertex(vertices[2]);

this->line.addVertex(vertices[3]);

this->line.addIndex(this->line.getNumVertices() - 1);

this->line.addIndex(this->line.getNumVertices() - 2);

}

if (noise_3 < 0.45) {

this->line.addVertex(vertices[0]);

this->line.addVertex(vertices[1]);

this->line.addIndex(this->line.getNumVertices() - 1);

this->line.addIndex(this->line.getNumVertices() - 2);

}

if (noise_4 < 0.45) {

this->line.addVertex(vertices[1]);

this->line.addVertex(vertices[3]);

this->line.addIndex(this->line.getNumVertices() - 1);

this->line.addIndex(this->line.getNumVertices() - 2);

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateY(ofGetFrameNum() * 0.333333333333333 * 6);

ofSetColor(255);

this->line.draw();

ofSetColor(0);

this->face.draw();

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/Insta20221130

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2022年11月29日

Distorted sphere. Draw by openFrameworks

[ Video ]

[ About ]
歪な球体。

[ 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 base_mesh, draw_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) {};

ofEasyCam cam;

ofMesh base_mesh, draw_mesh;

};

#include "ofApp.h"

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

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

	ofBackground(0);
	ofEnableDepthTest();
	//ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);

	auto ico_sphere = ofIcoSpherePrimitive(250, 3);
	this->base_mesh = ico_sphere.getMesh();
}

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

	ofSeedRandom(39);
	this->draw_mesh = this->base_mesh;

	vector<ofColor> color_list = { ofColor(0, 255, 255, 128) };

	auto noise_seed = ofRandom(1000);
	for (int k = 0; k < color_list.size(); k++) {

		noise_seed += ofRandom(1000);
		int index = 0;
		for (auto& v : this->draw_mesh.getVertices()) {

			for (int i = 0; i < 16; i++) {

				auto rotation_x = glm::rotate(glm::mat4(), ofMap(ofNoise(glm::vec4(v * 0.001, noise_seed + (ofGetFrameNum() + i) * 0.0015)), 0, 1, -30, 30) * (float)DEG_TO_RAD, glm::vec3(1, 0, 0));
				auto rotation_y = glm::rotate(glm::mat4(), ofMap(ofNoise(glm::vec4(v * 0.001, noise_seed + (ofGetFrameNum() + i) * 0.0015)), 0, 1, -30, 30) * (float)DEG_TO_RAD, glm::vec3(0, 1, 0));
				auto rotation_z = glm::rotate(glm::mat4(), ofMap(ofNoise(glm::vec4(v * 0.001, noise_seed + (ofGetFrameNum() + i) * 0.0015)), 0, 1, -30, 30) * (float)DEG_TO_RAD, glm::vec3(0, 0, 1));

				v = glm::vec4(v, 0) * rotation_z * rotation_y * rotation_x;
			}

			this->draw_mesh.addColor(color_list[k]);
			index++;
		}

	}
}

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

	this->cam.begin();
	ofRotateY(ofGetFrameNum() * 1.6666666666666666);

	this->draw_mesh.drawWireframe();

	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();

//ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);

auto ico_sphere = ofIcoSpherePrimitive(250, 3);

this->base_mesh = ico_sphere.getMesh();

}

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

void ofApp::update() {

ofSeedRandom(39);

this->draw_mesh = this->base_mesh;

vector<ofColor> color_list = { ofColor(0, 255, 255, 128) };

auto noise_seed = ofRandom(1000);

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

noise_seed += ofRandom(1000);

int index = 0;

for (auto& v : this->draw_mesh.getVertices()) {

for (int i = 0; i < 16; i++) {

auto rotation_x = glm::rotate(glm::mat4(), ofMap(ofNoise(glm::vec4(v * 0.001, noise_seed + (ofGetFrameNum() + i) * 0.0015)), 0, 1, -30, 30) * (float)DEG_TO_RAD, glm::vec3(1, 0, 0));

auto rotation_y = glm::rotate(glm::mat4(), ofMap(ofNoise(glm::vec4(v * 0.001, noise_seed + (ofGetFrameNum() + i) * 0.0015)), 0, 1, -30, 30) * (float)DEG_TO_RAD, glm::vec3(0, 1, 0));

auto rotation_z = glm::rotate(glm::mat4(), ofMap(ofNoise(glm::vec4(v * 0.001, noise_seed + (ofGetFrameNum() + i) * 0.0015)), 0, 1, -30, 30) * (float)DEG_TO_RAD, glm::vec3(0, 0, 1));

v = glm::vec4(v, 0) * rotation_z * rotation_y * rotation_x;

}

this->draw_mesh.addColor(color_list[k]);

index++;

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateY(ofGetFrameNum() * 1.6666666666666666);

this->draw_mesh.drawWireframe();

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20221129

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2022年11月28日

Every Day. Draw by openFrameworks

[ Video ]

[ About ]
毎日。

[ 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) {};

	ofTrueTypeFont font;
};

#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) {};

ofTrueTypeFont font;

};

#include "ofApp.h"

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

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

	ofBackground(255);
	ofSetColor(0);
	ofFill();
	ofSetLineWidth(1.5);

	this->font.loadFont("fonts/Kazesawa-Bold.ttf", 90, true, true, true);
}

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

}

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

	ofTranslate(ofGetWindowSize() * 0.5);

	for (int y = -240 + 40; y < ofGetHeight() - 480; y += 120) {

		string word = "Every Day";
		auto path_list = font.getStringAsPoints(word, true, false);

		for (auto path : path_list) {

			auto outline = path.getOutline();

			ofBeginShape();
			for (int outline_index = 0; outline_index < outline.size(); outline_index++) {

				if (outline_index != 0) { ofNextContour(true); }

				outline[outline_index] = outline[outline_index].getResampledByCount(300);
				auto vertices = outline[outline_index].getVertices();
				for (int vertices_index = 0; vertices_index < vertices.size(); vertices_index++) {

					auto location = glm::vec2(vertices[vertices_index].x - this->font.stringWidth(word) * 0.5, y + vertices[vertices_index].y + this->font.stringHeight(word) * 0.5);
					auto len = glm::length(location);

					auto noise_location = glm::normalize(location);

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

						auto radius = (ofGetFrameNum() * 8 + i * 300) % 600 + ofMap(ofNoise(glm::vec3(noise_location, ofGetFrameNum() * 0.1)), 0, 1, -30, 30);

						if (len > radius - 35 && len < radius) {

							location = glm::normalize(location) * (radius + 35);
							break;
						}

						if (len < radius + 35 && len > radius) {

							location = glm::normalize(location) * (radius + 35);
							break;
						}
					}

					ofVertex(location);
				}
			}
			ofEndShape(true);
		}
	}
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(30);

ofSetWindowTitle("openframeworks");

ofBackground(255);

ofSetColor(0);

ofFill();

ofSetLineWidth(1.5);

this->font.loadFont("fonts/Kazesawa-Bold.ttf", 90, true, true, true);

}

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

void ofApp::update() {

}

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

void ofApp::draw() {

ofTranslate(ofGetWindowSize() * 0.5);

for (int y = -240 + 40; y < ofGetHeight() - 480; y += 120) {

string word = "Every Day";

auto path_list = font.getStringAsPoints(word, true, false);

for (auto path : path_list) {

auto outline = path.getOutline();

ofBeginShape();

for (int outline_index = 0; outline_index < outline.size(); outline_index++) {

if (outline_index != 0) { ofNextContour(true); }

outline[outline_index] = outline[outline_index].getResampledByCount(300);

auto vertices = outline[outline_index].getVertices();

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

auto location = glm::vec2(vertices[vertices_index].x - this->font.stringWidth(word) * 0.5, y + vertices[vertices_index].y + this->font.stringHeight(word) * 0.5);

auto len = glm::length(location);

auto noise_location = glm::normalize(location);

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

auto radius = (ofGetFrameNum() * 8 + i * 300) % 600 + ofMap(ofNoise(glm::vec3(noise_location, ofGetFrameNum() * 0.1)), 0, 1, -30, 30);

if (len > radius - 35 && len < radius) {

location = glm::normalize(location) * (radius + 35);

break;

}

if (len < radius + 35 && len > radius) {

location = glm::normalize(location) * (radius + 35);

break;

}

ofVertex(location);

}

ofEndShape(true);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20221128

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