Font afterimage. – プログラミング de 落描き

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文字の残像。

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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;

	float font_size;
	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) {};

ofEasyCam cam;

float font_size;

ofTrueTypeFont font;

};

#include "ofApp.h"

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

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

	ofBackground(39);
	ofSetColor(128);
	ofNoFill();
	ofEnableDepthTest();
	ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);

	this->font_size = 100;
	this->font.loadFont("fonts/msgothic.ttc", this->font_size, true, true, true);
}

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

	ofSeedRandom(39);
}

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

	this->cam.begin();
	ofRotateY(ofGetFrameNum() * 1.44);
	ofRotateX(ofGetFrameNum() * 2.88);

	int p = ofGetFrameNum() / 25;
	string word = "Z";
	if (p % 4 == 0) { word = "C"; }
	if (p % 4 == 1) { word = "O"; }
	if (p % 4 == 2) { word = "D"; }
	if (p % 4 == 3) { word = "E"; }

	auto noise_seed = glm::vec3(ofRandom(1000), ofRandom(1000), ofRandom(1000));
	auto sample_count = 180;

	for (int i = 0; i < 10; i++) {

		auto len = ofMap(ofNoise(i * 0.05 + ofGetFrameNum() * 0.05), 0, 1, 0, 800);

		auto noise_x = ofNoise(noise_seed.x, len * -0.00025 + i * 0.005 + ofGetFrameNum() * 0.0045);
		auto noise_y = ofNoise(noise_seed.y, len * -0.00025 + i * 0.005 + ofGetFrameNum() * 0.0045);
		auto noise_z = ofNoise(noise_seed.z, len * -0.00025 + i * 0.005 + ofGetFrameNum() * 0.0045);

		if (noise_x < 0.2) { noise_x = 0; }
		else if (noise_x < 0.4) { noise_x = ofMap(noise_x, 0.2, 0.4, 0, 0.5); }
		else if (noise_x < 0.6) { noise_x = 0.5; }
		else if (noise_x < 0.8) { noise_x = ofMap(noise_x, 0.6, 0.8, 0.5, 1.0); }
		else { noise_x = 1; }

		if (noise_y < 0.2) { noise_y = 0; }
		else if (noise_y < 0.4) { noise_y = ofMap(noise_y, 0.2, 0.4, 0, 0.5); }
		else if (noise_y < 0.6) { noise_y = 0.5; }
		else if (noise_y < 0.8) { noise_y = ofMap(noise_y, 0.6, 0.8, 0.5, 1.0); }
		else { noise_y = 1; }

		if (noise_z < 0.2) { noise_z = 0; }
		else if (noise_z < 0.4) { noise_z = ofMap(noise_z, 0.2, 0.4, 0, 0.5); }
		else if (noise_z < 0.6) { noise_z = 0.5; }
		else if (noise_z < 0.8) { noise_z = ofMap(noise_z, 0.6, 0.8, 0.5, 1.0); }
		else { noise_z = 1; }

		auto angle_x = ofMap(noise_x, 0, 1, -90, 90);
		auto angle_y = ofMap(noise_y, 0, 1, -90, 90);
		auto angle_z = ofMap(noise_z, 0, 1, -90, 90);

		ofPushMatrix();
		ofRotateZ(angle_z);
		ofRotateY(angle_y);
		ofRotateX(angle_x);

		ofSetLineWidth(ofMap(i, 0, 10, 0.25, 2));

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

			ofPath chara_path = this->font.getCharacterAsPoints(word[i % word.size()], true, false);
			vector<ofPolyline> outline = chara_path.getOutline();

			ofNoFill();
			ofSetColor(255);
			ofBeginShape();
			for (int outline_index = 0; outline_index < outline.size(); outline_index++) {

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

				auto vertices = outline[outline_index].getResampledByCount(sample_count).getVertices();
				for (auto& vertex : vertices) {

					auto location = vertex - glm::vec3(this->font_size * 0.25, this->font_size * -0.5, 0);
					location = (location / 100) * len;
					ofVertex(location);
				}
			}
			ofEndShape(true);
		}

		ofPopMatrix();
	}

	this->cam.end();

	/*
	int start = 500;
	if (ofGetFrameNum() > start) {

		ostringstream os;
		os << setw(4) << 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);

ofSetColor(128);

ofNoFill();

ofEnableDepthTest();

ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);

this->font_size = 100;

this->font.loadFont("fonts/msgothic.ttc", this->font_size, true, true, true);

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateY(ofGetFrameNum() * 1.44);

ofRotateX(ofGetFrameNum() * 2.88);

int p = ofGetFrameNum() / 25;

string word = "Z";

if (p % 4 == 0) { word = "C"; }

if (p % 4 == 1) { word = "O"; }

if (p % 4 == 2) { word = "D"; }

if (p % 4 == 3) { word = "E"; }

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

auto sample_count = 180;

for (int i = 0; i < 10; i++) {

auto len = ofMap(ofNoise(i * 0.05 + ofGetFrameNum() * 0.05), 0, 1, 0, 800);

auto noise_x = ofNoise(noise_seed.x, len * -0.00025 + i * 0.005 + ofGetFrameNum() * 0.0045);

auto noise_y = ofNoise(noise_seed.y, len * -0.00025 + i * 0.005 + ofGetFrameNum() * 0.0045);

auto noise_z = ofNoise(noise_seed.z, len * -0.00025 + i * 0.005 + ofGetFrameNum() * 0.0045);

if (noise_x < 0.2) { noise_x = 0; }

else if (noise_x < 0.4) { noise_x = ofMap(noise_x, 0.2, 0.4, 0, 0.5); }

else if (noise_x < 0.6) { noise_x = 0.5; }

else if (noise_x < 0.8) { noise_x = ofMap(noise_x, 0.6, 0.8, 0.5, 1.0); }

else { noise_x = 1; }

if (noise_y < 0.2) { noise_y = 0; }

else if (noise_y < 0.4) { noise_y = ofMap(noise_y, 0.2, 0.4, 0, 0.5); }

else if (noise_y < 0.6) { noise_y = 0.5; }

else if (noise_y < 0.8) { noise_y = ofMap(noise_y, 0.6, 0.8, 0.5, 1.0); }

else { noise_y = 1; }

if (noise_z < 0.2) { noise_z = 0; }

else if (noise_z < 0.4) { noise_z = ofMap(noise_z, 0.2, 0.4, 0, 0.5); }

else if (noise_z < 0.6) { noise_z = 0.5; }

else if (noise_z < 0.8) { noise_z = ofMap(noise_z, 0.6, 0.8, 0.5, 1.0); }

else { noise_z = 1; }

auto angle_x = ofMap(noise_x, 0, 1, -90, 90);

auto angle_y = ofMap(noise_y, 0, 1, -90, 90);

auto angle_z = ofMap(noise_z, 0, 1, -90, 90);

ofPushMatrix();

ofRotateZ(angle_z);

ofRotateY(angle_y);

ofRotateX(angle_x);

ofSetLineWidth(ofMap(i, 0, 10, 0.25, 2));

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

ofPath chara_path = this->font.getCharacterAsPoints(word[i % word.size()], true, false);

vector<ofPolyline> outline = chara_path.getOutline();

ofNoFill();

ofSetColor(255);

ofBeginShape();

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

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

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

for (auto& vertex : vertices) {

auto location = vertex - glm::vec3(this->font_size * 0.25, this->font_size * -0.5, 0);

location = (location / 100) * len;

ofVertex(location);

}

ofEndShape(true);

}

ofPopMatrix();

}

this->cam.end();

int start = 500;

if (ofGetFrameNum() > start) {

ostringstream os;

os << setw(4) << 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());

}

[ Link ]
https://github.com/junkiyoshi/Insta20250211

2025年2月
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