JSM: Added module and TS file for RGBELoader.

docs/manual/en/introduction/Import-via-modules.html

@@ -124,6 +124,7 @@
 						<li>PDBLoader</li>
 						<li>PlayCanvasLoader</li>
 						<li>PLYLoader</li>
+						<li>RGBELoader</li>
 						<li>STLLoader</li>
 						<li>SVGLoader</li>
 						<li>TGALoader</li>

examples/js/loaders/RGBELoader.js

@@ -5,7 +5,7 @@
 // https://github.com/mrdoob/three.js/issues/5552
 // http://en.wikipedia.org/wiki/RGBE_image_format
 
-THREE.HDRLoader = THREE.RGBELoader = function ( manager ) {
+THREE.RGBELoader = function ( manager ) {
 
 	this.manager = ( manager !== undefined ) ? manager : THREE.DefaultLoadingManager;
 	this.type = THREE.UnsignedByteType;
@@ -316,8 +316,7 @@ THREE.RGBELoader.prototype._parser = function ( buffer ) {
 		}
 	;
 
-	var byteArray = new Uint8Array( buffer ),
-		byteLength = byteArray.byteLength;
+	var byteArray = new Uint8Array( buffer );
 	byteArray.pos = 0;
 	var rgbe_header_info = RGBE_ReadHeader( byteArray );
 
@@ -392,5 +391,3 @@ THREE.RGBELoader.prototype.setType = function ( value ) {
 	return this;
 
 };
-
-

examples/jsm/loaders/RGBELoader.d.ts

+import {
+  LoadingManager,
+  DataTextureLoader,
+  TextureDataType,
+  PixelFormat
+} from '../../../src/Three';
+
+export interface RGBE {
+  width: number;
+  height: number;
+  data: Float32Array | Uint8Array;
+  header: string;
+  gamma: number;
+  exposure: number;
+  format: PixelFormat;
+  type: TextureDataType;
+}
+
+export class RGBELoader extends DataTextureLoader {
+  constructor(manager?: LoadingManager);
+  type: TextureDataType;
+
+  _parser(buffer: ArrayBuffer): RGBE;
+  setType(type: TextureDataType): this;
+}

examples/jsm/loaders/RGBELoader.js

+/**
+ * @author Nikos M. / https://github.com/foo123/
+ */
+
+import {
+	DataTextureLoader,
+	DefaultLoadingManager,
+	FloatType,
+	RGBEFormat,
+	RGBFormat,
+	UnsignedByteType
+} from "../../../build/three.module.js";
+
+// https://github.com/mrdoob/three.js/issues/5552
+// http://en.wikipedia.org/wiki/RGBE_image_format
+
+var RGBELoader = function ( manager ) {
+
+	this.manager = ( manager !== undefined ) ? manager : DefaultLoadingManager;
+	this.type = UnsignedByteType;
+
+};
+
+// extend DataTextureLoader
+RGBELoader.prototype = Object.create( DataTextureLoader.prototype );
+
+// adapted from http://www.graphics.cornell.edu/~bjw/rgbe.html
+RGBELoader.prototype._parser = function ( buffer ) {
+
+	var
+		/* return codes for rgbe routines */
+		RGBE_RETURN_SUCCESS = 0,
+		RGBE_RETURN_FAILURE = - 1,
+
+		/* default error routine.  change this to change error handling */
+		rgbe_read_error = 1,
+		rgbe_write_error = 2,
+		rgbe_format_error = 3,
+		rgbe_memory_error = 4,
+		rgbe_error = function ( rgbe_error_code, msg ) {
+
+			switch ( rgbe_error_code ) {
+
+				case rgbe_read_error: console.error( "RGBELoader Read Error: " + ( msg || '' ) );
+					break;
+				case rgbe_write_error: console.error( "RGBELoader Write Error: " + ( msg || '' ) );
+					break;
+				case rgbe_format_error: console.error( "RGBELoader Bad File Format: " + ( msg || '' ) );
+					break;
+				default:
+				case rgbe_memory_error: console.error( "RGBELoader: Error: " + ( msg || '' ) );
+
+			}
+			return RGBE_RETURN_FAILURE;
+
+		},
+
+		/* offsets to red, green, and blue components in a data (float) pixel */
+		RGBE_DATA_RED = 0,
+		RGBE_DATA_GREEN = 1,
+		RGBE_DATA_BLUE = 2,
+
+		/* number of floats per pixel, use 4 since stored in rgba image format */
+		RGBE_DATA_SIZE = 4,
+
+		/* flags indicating which fields in an rgbe_header_info are valid */
+		RGBE_VALID_PROGRAMTYPE = 1,
+		RGBE_VALID_FORMAT = 2,
+		RGBE_VALID_DIMENSIONS = 4,
+
+		NEWLINE = "\n",
+
+		fgets = function ( buffer, lineLimit, consume ) {
+
+			lineLimit = ! lineLimit ? 1024 : lineLimit;
+			var p = buffer.pos,
+				i = - 1, len = 0, s = '', chunkSize = 128,
+				chunk = String.fromCharCode.apply( null, new Uint16Array( buffer.subarray( p, p + chunkSize ) ) )
+			;
+			while ( ( 0 > ( i = chunk.indexOf( NEWLINE ) ) ) && ( len < lineLimit ) && ( p < buffer.byteLength ) ) {
+
+				s += chunk; len += chunk.length;
+				p += chunkSize;
+				chunk += String.fromCharCode.apply( null, new Uint16Array( buffer.subarray( p, p + chunkSize ) ) );
+
+			}
+
+			if ( - 1 < i ) {
+
+				/*for (i=l-1; i>=0; i--) {
+					byteCode = m.charCodeAt(i);
+					if (byteCode > 0x7f && byteCode <= 0x7ff) byteLen++;
+					else if (byteCode > 0x7ff && byteCode <= 0xffff) byteLen += 2;
+					if (byteCode >= 0xDC00 && byteCode <= 0xDFFF) i--; //trail surrogate
+				}*/
+				if ( false !== consume ) buffer.pos += len + i + 1;
+				return s + chunk.slice( 0, i );
+
+			}
+			return false;
+
+		},
+
+		/* minimal header reading.  modify if you want to parse more information */
+		RGBE_ReadHeader = function ( buffer ) {
+
+			var line, match,
+
+				// regexes to parse header info fields
+				magic_token_re = /^#\?(\S+)$/,
+				gamma_re = /^\s*GAMMA\s*=\s*(\d+(\.\d+)?)\s*$/,
+				exposure_re = /^\s*EXPOSURE\s*=\s*(\d+(\.\d+)?)\s*$/,
+				format_re = /^\s*FORMAT=(\S+)\s*$/,
+				dimensions_re = /^\s*\-Y\s+(\d+)\s+\+X\s+(\d+)\s*$/,
+
+				// RGBE format header struct
+				header = {
+
+					valid: 0, /* indicate which fields are valid */
+
+					string: '', /* the actual header string */
+
+					comments: '', /* comments found in header */
+
+					programtype: 'RGBE', /* listed at beginning of file to identify it after "#?". defaults to "RGBE" */
+
+					format: '', /* RGBE format, default 32-bit_rle_rgbe */
+
+					gamma: 1.0, /* image has already been gamma corrected with given gamma. defaults to 1.0 (no correction) */
+
+					exposure: 1.0, /* a value of 1.0 in an image corresponds to <exposure> watts/steradian/m^2. defaults to 1.0 */
+
+					width: 0, height: 0 /* image dimensions, width/height */
+
+				};
+
+			if ( buffer.pos >= buffer.byteLength || ! ( line = fgets( buffer ) ) ) {
+
+				return rgbe_error( rgbe_read_error, "no header found" );
+
+			}
+			/* if you want to require the magic token then uncomment the next line */
+			if ( ! ( match = line.match( magic_token_re ) ) ) {
+
+				return rgbe_error( rgbe_format_error, "bad initial token" );
+
+			}
+			header.valid |= RGBE_VALID_PROGRAMTYPE;
+			header.programtype = match[ 1 ];
+			header.string += line + "\n";
+
+			while ( true ) {
+
+				line = fgets( buffer );
+				if ( false === line ) break;
+				header.string += line + "\n";
+
+				if ( '#' === line.charAt( 0 ) ) {
+
+					header.comments += line + "\n";
+					continue; // comment line
+
+				}
+
+				if ( match = line.match( gamma_re ) ) {
+
+					header.gamma = parseFloat( match[ 1 ], 10 );
+
+				}
+				if ( match = line.match( exposure_re ) ) {
+
+					header.exposure = parseFloat( match[ 1 ], 10 );
+
+				}
+				if ( match = line.match( format_re ) ) {
+
+					header.valid |= RGBE_VALID_FORMAT;
+					header.format = match[ 1 ];//'32-bit_rle_rgbe';
+
+				}
+				if ( match = line.match( dimensions_re ) ) {
+
+					header.valid |= RGBE_VALID_DIMENSIONS;
+					header.height = parseInt( match[ 1 ], 10 );
+					header.width = parseInt( match[ 2 ], 10 );
+
+				}
+
+				if ( ( header.valid & RGBE_VALID_FORMAT ) && ( header.valid & RGBE_VALID_DIMENSIONS ) ) break;
+
+			}
+
+			if ( ! ( header.valid & RGBE_VALID_FORMAT ) ) {
+
+				return rgbe_error( rgbe_format_error, "missing format specifier" );
+
+			}
+			if ( ! ( header.valid & RGBE_VALID_DIMENSIONS ) ) {
+
+				return rgbe_error( rgbe_format_error, "missing image size specifier" );
+
+			}
+
+			return header;
+
+		},
+
+		RGBE_ReadPixels_RLE = function ( buffer, w, h ) {
+
+			var data_rgba, offset, pos, count, byteValue,
+				scanline_buffer, ptr, ptr_end, i, l, off, isEncodedRun,
+				scanline_width = w, num_scanlines = h, rgbeStart
+			;
+
+			if (
+				// run length encoding is not allowed so read flat
+				( ( scanline_width < 8 ) || ( scanline_width > 0x7fff ) ) ||
+				// this file is not run length encoded
+				( ( 2 !== buffer[ 0 ] ) || ( 2 !== buffer[ 1 ] ) || ( buffer[ 2 ] & 0x80 ) )
+			) {
+
+				// return the flat buffer
+				return new Uint8Array( buffer );
+
+			}
+
+			if ( scanline_width !== ( ( buffer[ 2 ] << 8 ) | buffer[ 3 ] ) ) {
+
+				return rgbe_error( rgbe_format_error, "wrong scanline width" );
+
+			}
+
+			data_rgba = new Uint8Array( 4 * w * h );
+
+			if ( ! data_rgba || ! data_rgba.length ) {
+
+				return rgbe_error( rgbe_memory_error, "unable to allocate buffer space" );
+
+			}
+
+			offset = 0; pos = 0; ptr_end = 4 * scanline_width;
+			rgbeStart = new Uint8Array( 4 );
+			scanline_buffer = new Uint8Array( ptr_end );
+
+			// read in each successive scanline
+			while ( ( num_scanlines > 0 ) && ( pos < buffer.byteLength ) ) {
+
+				if ( pos + 4 > buffer.byteLength ) {
+
+					return rgbe_error( rgbe_read_error );
+
+				}
+
+				rgbeStart[ 0 ] = buffer[ pos ++ ];
+				rgbeStart[ 1 ] = buffer[ pos ++ ];
+				rgbeStart[ 2 ] = buffer[ pos ++ ];
+				rgbeStart[ 3 ] = buffer[ pos ++ ];
+
+				if ( ( 2 != rgbeStart[ 0 ] ) || ( 2 != rgbeStart[ 1 ] ) || ( ( ( rgbeStart[ 2 ] << 8 ) | rgbeStart[ 3 ] ) != scanline_width ) ) {
+
+					return rgbe_error( rgbe_format_error, "bad rgbe scanline format" );
+
+				}
+
+				// read each of the four channels for the scanline into the buffer
+				// first red, then green, then blue, then exponent
+				ptr = 0;
+				while ( ( ptr < ptr_end ) && ( pos < buffer.byteLength ) ) {
+
+					count = buffer[ pos ++ ];
+					isEncodedRun = count > 128;
+					if ( isEncodedRun ) count -= 128;
+
+					if ( ( 0 === count ) || ( ptr + count > ptr_end ) ) {
+
+						return rgbe_error( rgbe_format_error, "bad scanline data" );
+
+					}
+
+					if ( isEncodedRun ) {
+
+						// a (encoded) run of the same value
+						byteValue = buffer[ pos ++ ];
+						for ( i = 0; i < count; i ++ ) {
+
+							scanline_buffer[ ptr ++ ] = byteValue;
+
+						}
+						//ptr += count;
+
+					} else {
+
+						// a literal-run
+						scanline_buffer.set( buffer.subarray( pos, pos + count ), ptr );
+						ptr += count; pos += count;
+
+					}
+
+				}
+
+
+				// now convert data from buffer into rgba
+				// first red, then green, then blue, then exponent (alpha)
+				l = scanline_width; //scanline_buffer.byteLength;
+				for ( i = 0; i < l; i ++ ) {
+
+					off = 0;
+					data_rgba[ offset ] = scanline_buffer[ i + off ];
+					off += scanline_width; //1;
+					data_rgba[ offset + 1 ] = scanline_buffer[ i + off ];
+					off += scanline_width; //1;
+					data_rgba[ offset + 2 ] = scanline_buffer[ i + off ];
+					off += scanline_width; //1;
+					data_rgba[ offset + 3 ] = scanline_buffer[ i + off ];
+					offset += 4;
+
+				}
+
+				num_scanlines --;
+
+			}
+
+			return data_rgba;
+
+		}
+	;
+
+	var byteArray = new Uint8Array( buffer );
+	byteArray.pos = 0;
+	var rgbe_header_info = RGBE_ReadHeader( byteArray );
+
+	if ( RGBE_RETURN_FAILURE !== rgbe_header_info ) {
+
+		var w = rgbe_header_info.width,
+			h = rgbe_header_info.height,
+			image_rgba_data = RGBE_ReadPixels_RLE( byteArray.subarray( byteArray.pos ), w, h )
+		;
+		if ( RGBE_RETURN_FAILURE !== image_rgba_data ) {
+
+			if ( this.type === UnsignedByteType ) {
+
+				var data = image_rgba_data;
+				var format = RGBEFormat; // handled as THREE.RGBAFormat in shaders
+				var type = UnsignedByteType;
+
+			} else if ( this.type === FloatType ) {
+
+				var RGBEByteToRGBFloat = function ( sourceArray, sourceOffset, destArray, destOffset ) {
+
+					var e = sourceArray[ sourceOffset + 3 ];
+					var scale = Math.pow( 2.0, e - 128.0 ) / 255.0;
+
+					destArray[ destOffset + 0 ] = sourceArray[ sourceOffset + 0 ] * scale;
+					destArray[ destOffset + 1 ] = sourceArray[ sourceOffset + 1 ] * scale;
+					destArray[ destOffset + 2 ] = sourceArray[ sourceOffset + 2 ] * scale;
+
+				};
+
+				var numElements = ( image_rgba_data.length / 4 ) * 3;
+				var floatArray = new Float32Array( numElements );
+
+				for ( var j = 0; j < numElements; j ++ ) {
+
+					RGBEByteToRGBFloat( image_rgba_data, j * 4, floatArray, j * 3 );
+
+				}
+
+				var data = floatArray;
+				var format = RGBFormat;
+				var type = FloatType;
+
+
+			} else {
+
+				console.error( 'THREE.RGBELoader: unsupported type: ', this.type );
+
+			}
+
+			return {
+				width: w, height: h,
+				data: data,
+				header: rgbe_header_info.string,
+				gamma: rgbe_header_info.gamma,
+				exposure: rgbe_header_info.exposure,
+				format: format,
+				type: type
+			};
+
+		}
+
+	}
+
+	return null;
+
+};
+
+RGBELoader.prototype.setType = function ( value ) {
+
+	this.type = value;
+	return this;
+
+};
+
+export { RGBELoader };

utils/modularize.js

@@ -45,6 +45,7 @@ var files = [
 	{ path: 'loaders/PDBLoader.js', dependencies: [], ignoreList: [] },
 	{ path: 'loaders/PlayCanvasLoader.js', dependencies: [], ignoreList: [] },
 	{ path: 'loaders/PLYLoader.js', dependencies: [], ignoreList: [ 'Mesh' ] },
+	{ path: 'loaders/RGBELoader.js', dependencies: [], ignoreList: [ 'RGBAFormat' ] },
 	{ path: 'loaders/STLLoader.js', dependencies: [], ignoreList: [ 'Mesh', 'MeshPhongMaterial', 'VertexColors' ] },
 	{ path: 'loaders/SVGLoader.js', dependencies: [], ignoreList: [] },
 	{ path: 'loaders/TGALoader.js', dependencies: [], ignoreList: [] },