Initial project import

node_modules/three-stdlib/effects/AsciiEffect.js

@@ -0,0 +1,156 @@
+class AsciiEffect {
+  constructor(renderer, charSet = " .:-=+*#%@", options = {}) {
+    const fResolution = options["resolution"] || 0.15;
+    const iScale = options["scale"] || 1;
+    const bColor = options["color"] || false;
+    const bAlpha = options["alpha"] || false;
+    const bBlock = options["block"] || false;
+    const bInvert = options["invert"] || false;
+    const strResolution = options["strResolution"] || "low";
+    let width, height;
+    const domElement = document.createElement("div");
+    domElement.style.cursor = "default";
+    const oAscii = document.createElement("table");
+    domElement.appendChild(oAscii);
+    let iWidth, iHeight;
+    let oImg;
+    this.setSize = function(w, h) {
+      width = w;
+      height = h;
+      renderer.setSize(w, h);
+      initAsciiSize();
+    };
+    this.render = function(scene, camera) {
+      renderer.render(scene, camera);
+      asciifyImage(oAscii);
+    };
+    this.domElement = domElement;
+    function initAsciiSize() {
+      iWidth = Math.floor(width * fResolution);
+      iHeight = Math.floor(height * fResolution);
+      oCanvas.width = iWidth;
+      oCanvas.height = iHeight;
+      oImg = renderer.domElement;
+      if (oImg.style.backgroundColor) {
+        oAscii.rows[0].cells[0].style.backgroundColor = oImg.style.backgroundColor;
+        oAscii.rows[0].cells[0].style.color = oImg.style.color;
+      }
+      oAscii.cellSpacing = 0;
+      oAscii.cellPadding = 0;
+      const oStyle = oAscii.style;
+      oStyle.whiteSpace = "pre";
+      oStyle.margin = "0px";
+      oStyle.padding = "0px";
+      oStyle.letterSpacing = fLetterSpacing + "px";
+      oStyle.fontFamily = strFont;
+      oStyle.fontSize = fFontSize + "px";
+      oStyle.lineHeight = fLineHeight + "px";
+      oStyle.textAlign = "left";
+      oStyle.textDecoration = "none";
+    }
+    const aDefaultCharList = " .,:;i1tfLCG08@".split("");
+    const aDefaultColorCharList = " CGO08@".split("");
+    const strFont = "courier new, monospace";
+    const oCanvasImg = renderer.domElement;
+    const oCanvas = document.createElement("canvas");
+    if (!oCanvas.getContext) {
+      return;
+    }
+    const oCtx = oCanvas.getContext("2d");
+    if (!oCtx.getImageData) {
+      return;
+    }
+    let aCharList = bColor ? aDefaultColorCharList : aDefaultCharList;
+    if (charSet)
+      aCharList = charSet;
+    const fFontSize = 2 / fResolution * iScale;
+    const fLineHeight = 2 / fResolution * iScale;
+    let fLetterSpacing = 0;
+    if (strResolution == "low") {
+      switch (iScale) {
+        case 1:
+          fLetterSpacing = -1;
+          break;
+        case 2:
+        case 3:
+          fLetterSpacing = -2.1;
+          break;
+        case 4:
+          fLetterSpacing = -3.1;
+          break;
+        case 5:
+          fLetterSpacing = -4.15;
+          break;
+      }
+    }
+    if (strResolution == "medium") {
+      switch (iScale) {
+        case 1:
+          fLetterSpacing = 0;
+          break;
+        case 2:
+          fLetterSpacing = -1;
+          break;
+        case 3:
+          fLetterSpacing = -1.04;
+          break;
+        case 4:
+        case 5:
+          fLetterSpacing = -2.1;
+          break;
+      }
+    }
+    if (strResolution == "high") {
+      switch (iScale) {
+        case 1:
+        case 2:
+          fLetterSpacing = 0;
+          break;
+        case 3:
+        case 4:
+        case 5:
+          fLetterSpacing = -1;
+          break;
+      }
+    }
+    function asciifyImage(oAscii2) {
+      oCtx.clearRect(0, 0, iWidth, iHeight);
+      oCtx.drawImage(oCanvasImg, 0, 0, iWidth, iHeight);
+      const oImgData = oCtx.getImageData(0, 0, iWidth, iHeight).data;
+      let strChars = "";
+      for (let y = 0; y < iHeight; y += 2) {
+        for (let x = 0; x < iWidth; x++) {
+          const iOffset = (y * iWidth + x) * 4;
+          const iRed = oImgData[iOffset];
+          const iGreen = oImgData[iOffset + 1];
+          const iBlue = oImgData[iOffset + 2];
+          const iAlpha = oImgData[iOffset + 3];
+          let iCharIdx;
+          let fBrightness;
+          fBrightness = (0.3 * iRed + 0.59 * iGreen + 0.11 * iBlue) / 255;
+          if (iAlpha == 0) {
+            fBrightness = 1;
+          }
+          iCharIdx = Math.floor((1 - fBrightness) * (aCharList.length - 1));
+          if (bInvert) {
+            iCharIdx = aCharList.length - iCharIdx - 1;
+          }
+          let strThisChar = aCharList[iCharIdx];
+          if (strThisChar === void 0 || strThisChar == " ")
+            strThisChar = "&nbsp;";
+          if (bColor) {
+            strChars += "<span style='color:rgb(" + iRed + "," + iGreen + "," + iBlue + ");" + (bBlock ? "background-color:rgb(" + iRed + "," + iGreen + "," + iBlue + ");" : "") + (bAlpha ? "opacity:" + iAlpha / 255 + ";" : "") + "'>" + strThisChar + "</span>";
+          } else {
+            strChars += strThisChar;
+          }
+        }
+        strChars += "<br/>";
+      }
+      oAscii2.innerHTML = `<tr><td style="display:block;width:${width}px;height:${height}px;overflow:hidden">${strChars}</td></tr>`;
+    }
+  }
+}
+export {
+  AsciiEffect
+};
+//# sourceMappingURL=AsciiEffect.js.map