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optimised textgeo code

master
Cailean Finn 4 months ago
parent
commit
0a4df2e264
  1. 65
      public/js/main.js

65
public/js/main.js

@ -136,6 +136,7 @@ const pickHelper = new PickHelper();
const object_list = [] const object_list = []
const object_count = 20; const object_count = 20;
const fontLoader = new FontLoader(); const fontLoader = new FontLoader();
let group = new THREE.Group();
function init() { function init() {
@ -322,15 +323,25 @@ window.addEventListener('resize', () => {
} }
function ClearTextGeoList() { function ClearTextGeoList() {
for (let i = 0; i < text_Geometries.length; i++) { scene.remove(group)
scene.remove(text_Geometries[i]); text_Geometries = [];
}
text_Geometries.length = 0;
} }
function MeasureText(text) { // Preload font
let cachedFont = null;
fontLoader.load('fonts/Redaction 50_Regular.json', (font) => { fontLoader.load('fonts/Redaction 50_Regular.json', (font) => {
cachedFont = font;
});
function MeasureText(text) {
if (!cachedFont) {
// Font is not loaded yet, handle appropriately (e.g., show loading indicator or retry later)
return;
}
ClearTextGeoList(); ClearTextGeoList();
// Adjust font size based on window dimensions
let initialFontSize = 1; let initialFontSize = 1;
if (window.innerWidth < 1024) { if (window.innerWidth < 1024) {
initialFontSize = 0.5; initialFontSize = 0.5;
@ -339,31 +350,18 @@ function MeasureText(text) {
} }
const aspect = window.innerWidth / (window.innerHeight - 100); // Adjust for nav height const aspect = window.innerWidth / (window.innerHeight - 100); // Adjust for nav height
const frustumSize = 10; const orthoWidth = 10 * aspect;
const orthoWidth = (frustumSize * aspect / 2) - (frustumSize * aspect / -2);
function createTextGeometry(text, size) {
return new TextGeometry(text, {
height: 2,
depth: 1,
font: font,
size: size,
curveSegments: 1
});
}
// Split text into words // Split text into words
const split = text.split(" "); const split = text.split(" ");
const word_count = split.length;
const sentences = []; const sentences = [];
let currentText = ""; let currentText = "";
let currentFontSize = initialFontSize; let currentFontSize = initialFontSize;
let textGeo;
for (let i = 0; i < word_count; i++) { for (let i = 0; i < split.length; i++) {
const testText = currentText + (currentText ? " " : "") + split[i]; const testText = currentText + (currentText ? " " : "") + split[i];
textGeo = createTextGeometry(testText, currentFontSize); const textGeo = createTextGeometry(testText, currentFontSize);
textGeo.computeBoundingBox(); textGeo.computeBoundingBox();
const proportion = textGeo.boundingBox.max.x / orthoWidth; const proportion = textGeo.boundingBox.max.x / orthoWidth;
@ -381,22 +379,13 @@ function MeasureText(text) {
sentences.push(currentText); sentences.push(currentText);
} }
const numSentences = sentences.length; const numSentences = sentences.length;
const totalHeight = (numSentences - 1) * (1.5 * currentFontSize); const totalHeight = (numSentences - 1) * (1.5 * currentFontSize);
const startY = totalHeight / 2; const startY = totalHeight / 2;
for (let i = 0; i < sentences.length; i++) { for (let i = 0; i < sentences.length; i++) {
textGeo = createTextGeometry(sentences[i], currentFontSize); const textGeo = createTextGeometry(sentences[i], currentFontSize);
textGeo.computeBoundingBox();
const proportion = textGeo.boundingBox.max.x / orthoWidth;
if (proportion > 0.8) {
currentFontSize *= 0.8 / proportion;
textGeo = createTextGeometry(sentences[i], currentFontSize);
textGeo.computeBoundingBox(); textGeo.computeBoundingBox();
}
const textMaterial = new THREE.MeshNormalMaterial(); const textMaterial = new THREE.MeshNormalMaterial();
const textMesh = new THREE.Mesh(textGeo, textMaterial); const textMesh = new THREE.Mesh(textGeo, textMaterial);
@ -409,12 +398,22 @@ function MeasureText(text) {
textMesh.rotation.x = Math.PI / 2 * 0.05; textMesh.rotation.x = Math.PI / 2 * 0.05;
textMesh.position.y = startY - (i * (1.5 * currentFontSize)); textMesh.position.y = startY - (i * (1.5 * currentFontSize));
textMesh.position.z = 5; textMesh.position.z = 5;
text_Geometries.push(textMesh); text_Geometries.push(textMesh);
} }
for (let i = 0; i < text_Geometries.length; i++) { group = new THREE.Group();
scene.add(text_Geometries[i]); text_Geometries.forEach(mesh => group.add(mesh));
scene.add(group);
} }
function createTextGeometry(text, size) {
return new TextGeometry(text, {
height: 2,
depth: 1,
font: cachedFont,
size: size,
curveSegments: 1
}); });
} }

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