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textSlicer.js
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textSlicer.js
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// textSlicer
// Werllen Castro, 2021
// github.com/werls
//
// Originally made for Lâmina — MOSTRA AUDIOVISUAL PRETA
// http://mostralamina.com.br
//
// Full design process on Behance:
// https://www.behance.net/gallery/122884567/LAMINA-Mostra-Audiovisual-Preta
class textSlicer {
constructor(txt, distortion) {
this.txt = txt;
this.c = 255;
this.distortion = distortion;
}
setupCanvas() {
this.mycanvas = createCanvas(windowWidth, windowHeight);
if (windowWidth >= windowHeight) {
this.txt_h = windowHeight / 5;
this.div = 12;
} else {
this.txt_h = windowHeight / 10;
this.div = 5;
}
}
setupText(txt) {
this.txt_w = this.getTextWidth(this.txt, myfont, this.txt_h);
this.mod_w = width/this.div;
this.pos = createVector(width / 2, height / 2);
this.textCanvas = createGraphics(width + this.mod_w,height + this.mod_w);
this.textCanvas.textAlign(CENTER,CENTER);
this.textCanvas.fill(this.c);
this.textCanvas.textFont(myfont);
this.textCanvas.textSize(this.txt_h);
this.textCanvas.textLeading(this.txt_h);
}
getWidth() {
let txt = this.txt.split('\n');
let txt_list = [];
for (let i = 0; i < txt.length; i++) {
txt_list.push(max(txt[i].length));
}
let txtSize = this.getTextWidth(txt[this.indexOfMax(txt_list)], myfont, this.txt_h);
return txtSize;
}
show() {
this.textCanvas.clear();
this.textCanvas.text(this.txt,this.pos.x + this.mod_w / 2,this.pos.y);
translate(0, 0);
for (let i = 0; i < this.div + 1; i++) {
// Thanks to Murilo Polese
// for this snippet!
// https://github.com/murilopolese
image(
this.textCanvas,
this.mod_w * i, 0, // position
this.mod_w, height, // final size
// crop origin
map(
this.calculateSine(frameCount + i * this.distortion),
-1, 1,
this.mod_w * i, this.mod_w * i + this.mod_w
), 0,
this.mod_w, height // crop size
)
//
}
let objWidth = this.getWidth();
let objHeight = this.div * this.txt_h;
}
getTextWidth(txt, font, fontsize) {
let myTextWidth;
textFont(font);
textSize(fontsize);
myTextWidth = textWidth(txt);
return myTextWidth;
}
isMobile() {
return /iPhone|iPad|iPod|Android/i.test(navigator.userAgent);
}
calculateSine(deg) {
var radians = (Math.PI / 180) * deg;
return Math.sin(radians);
}
indexOfMax(arr) {
if (arr.length === 0) {
return -1;
}
var max = arr[0];
var maxIndex = 0;
for (var i = 1; i < arr.length; i++) {
if (arr[i] > max) {
maxIndex = i;
max = arr[i];
}
}
return maxIndex;
}
}