<?php

	/////////////////////////////////////////////////////////////////////////////
	//
	//	image.draw.inc.php
	//
	//	version 0.1.0
	//
	//  copyright 2004
	//  by klaas kielmann
	//  www.kosmokrator.com
	//
	//	klaas {at} kosmokrator {dot} com


	function imageDrawBox( &$srcImage, $intX, $intY, $intWidth = 8, $intHeight = 8, $rgbFill = array( "R" => 0x00, "G" => 0x00, "B" => 0x00, "A" => 0x00 ) ) {
		$colFill = imageColorExactAlpha( $srcImage, $rgbFill[ "R" ], $rgbFill[ "G" ], $rgbFill[ "B" ], $rgbFill[ "A" ] );
		imageFilledRectangle( $srcImage, $intX, $intY, $intX + $intWidth - 1, $intY + $intHeight - 1, $colFill );
	}

	function imageDrawMoonPhase( &$srcImage, $intX, $intY, $intSize = 16, $rgbBlack = array( "R" => 0x00, "G" => 0x00, "B" => 0x00, "A" => 0x00 ), $rgbWhite = array( "R" => 0xFF, "G" => 0xFF, "B" => 0xFF, "A" => 0x00 ) ) {
		$colBlack		= imageColorExactAlpha( $srcImage, $rgbBlack[ "R" ], $rgbBlack[ "G" ], $rgbBlack[ "B" ], $rgbBlack[ "A" ] );
		$colWhite		= imageColorExactAlpha( $srcImage, $rgbWhite[ "R" ], $rgbWhite[ "G" ], $rgbWhite[ "B" ], $rgbWhite[ "A" ] );
		$dateToday		= mktime();
		$dateFullMoon	= mktime( 2, 22, 0, 8, 30, 2004 );
		$intMoonPeriod	= 29 * 86400 + 12 * 3600 + 44.0496 * 60;
		$intMoonPhase	= ( $dateToday - $dateFullMoon ) % $intMoonPeriod;
		$fltPercent		= $intMoonPhase / $intMoonPeriod;
		$intPercent		= round( 200 * $fltPercent );
		$colLeft		= ( $fltPercent >= 0.5 ) ? $colBlack : $colWhite;
		$colRight		= ( $fltPercent >= 0.5 ) ? $colWhite : $colBlack;
		if ( $intPercent > 100 ) {
			$intPercent = $intPercent - 100;
		}
		$intSize += 2;
		$fltHalf = 0.5 * $intSize - 0.5;
		for ( $i = 1; $i < $intSize - 1; $i++ ) {
			$intYPos = $intY + $i - 1;
			$intWidth = 2.0 * sqrt( $fltHalf * $fltHalf - ( $i - $fltHalf ) * ( $i - $fltHalf ) );
			$intStart = $intX + $fltHalf - 0.5 * $intWidth;
			if ( $intPercent < 100 ) {
				$intLeft = $intWidth * ( ( 100 - $intPercent ) / 100 );
				imageLine( $srcImage, $intStart, $intYPos, $intStart + $intLeft - 1, $intYPos, $colLeft );
			} else {
				$intLeft = 0;
			}
			if ( $intPercent > 0 ) {
				$intRight = $intWidth * ( $intPercent / 100 );
				imageLine( $srcImage, $intStart + $intLeft, $intYPos, $intStart + $intLeft + $intRight - 1, $intYPos, $colRight );
			}
		}	
	}

	function imageDrawBorder( &$srcImage, $intXBorder = 8, $intYBorder = 8, $rgbBorder = array( "R" => 0x00, "G" => 0x00, "B" => 0x00 ), $intXOffset = 0, $intYOffset = 0 ) {
		$intWidth	= imageSX( $srcImage ) - 1;
		$intHeight	= imageSY( $srcImage ) - 1;
		$colDraw	= imageColorExactAlpha( $srcImage, $rgbBorder[ "R" ], $rgbBorder[ "G" ], $rgbBorder[ "B" ], $rgbBorder[ "A" ] );
		if ( $intXBorder > 0 ) {
			imageFilledRectangle( $srcImage, 0, $intYBorder + $intYOffset, $intXBorder + $intXOffset - 1, $intHeight + $intYOffset - $intYBorder, $colDraw );
			imageFilledRectangle( $srcImage, $intWidth - $intXBorder + $intXOffset + 1, $intYBorder + $intYOffset, $intWidth, $intHeight + $intYOffset - $intYBorder, $colDraw );
		}
		if ( $intYBorder > 0 ) {
			imageFilledRectangle( $srcImage, 0, 0, $intWidth, $intYBorder + $intYOffset - 1, $colDraw );
			imageFilledRectangle( $srcImage, 0, $intHeight + $intYOffset - $intYBorder + 1, $intWidth, $intHeight, $colDraw );
		}
	}

	function imageDrawShadow( &$srcImage, $intBorder, $rgbShadow = array( "R" => 0x00, "G" => 0x00, "B" => 0x00 ), $rgbBack = array( "R" => 0xFF, "G" => 0xFF, "B" => 0xFF ) ) {
		$intWidth	= imageSX( $srcImage ) - 1;
		$intHeight	= imageSY( $srcImage ) - 1;
		$arrGamma = array();
		for ( $i = 0; $i < $intBorder; $i++ ) {
			$arrGamma[ $i ] = 127.9 * pow( ( $i + 1 ) / $intBorder, 0.7 );
		}
		$colDraw	= imageColorExactAlpha( $srcImage, $rgbBack[ "R" ], $rgbBack[ "G" ], $rgbBack[ "B" ], 0 );
		imageFilledRectangle( $srcImage, $intWidth - $intBorder, 0, $intWidth, $intHeight, $colDraw );
		imageFilledRectangle( $srcImage, 0, $intHeight - $intBorder, $intWidth, $intHeight, $colDraw );
		for ( $i = 0; $i < $intBorder; $i++ ) {
			$colDraw = imageColorExactAlpha( $srcImage, $rgbShadow[ "R" ], $rgbShadow[ "G" ], $rgbShadow[ "B" ], $arrGamma[ $i ] );
			imageLine( $srcImage, $intWidth - $intBorder + $i, $i + 1, $intWidth - $intBorder + $i, $intHeight - $intBorder + $i, $colDraw );
			imageLine( $srcImage, $i + 1, $intHeight - $intBorder + $i, $intWidth - $intBorder + $i - 1, $intHeight - $intBorder + $i, $colDraw );
		}
	}

	function imageDrawPointGrid( &$srcImage, $intXSize = 8, $intYSize = 8, $rgbPoint = array( "R" => 0x00, "G" => 0x00, "B" => 0x00, "A" => 0xD0 ), $intXOffset = 0, $intYOffset = 0 ) {
		$intWidth	= imageSX( $srcImage ) / $intXSize;
		$intHeight	= imageSY( $srcImage ) / $intYSize;
		$colDraw	= imageColorExactAlpha( $srcImage, $rgbPoint[ "R" ], $rgbPoint[ "G" ], $rgbPoint[ "B" ], $rgbPoint[ "A" ] );
		for ( $y = 0; $y < $intHeight; $y++ ) {
			for ( $x = 0; $x < $intWidth; $x++ ) {
				imageSetPixel( $srcImage, $x * $intXSize + $intXOffset, $y * $intYSize + $intYOffset, $colDraw );
			}
		}
	}

	function imageDrawInvPointGrid( &$srcImage, $intXSize = 8, $intYSize = 8, $intXOffset = 0, $intYOffset = 0 ) {
		$intWidth	= imageSX( $srcImage ) / $intXSize;
		$intHeight	= imageSY( $srcImage ) / $intYSize;
		for ( $y = 0; $y < $intHeight; $y++ ) {
			for ( $x = 0; $x < $intWidth; $x++ ) {
				$rgbCol	= imageColorAt( $srcImage, $x * $intXSize + $intXOffset, $y * $intYSize + $intYOffset );
				$red	= 255 - ( $rgbCol >> 16 ) & 0xFF;
				$green	= 255 - ( $rgbCol >> 8 ) & 0xFF;
				$blue	= 255 - $rgbCol & 0xFF;
				imageSetPixel( $srcImage, $x * $intXSize + $intXOffset, $y * $intYSize + $intYOffset, ( $red << 16 ) | ( $green << 8 ) | $blue );
			}
		}
	}

	function imageDrawLineGrid( &$srcImage, $intXSize = 8, $intYSize = 8, $rgbLine = array( "R" => 0x00, "G" => 0x00, "B" => 0x00, "A" => 0xD0 ), $intXOffset = 0, $intYOffset = 0 ) {
		$intWidth	= imageSX( $srcImage ) / $intXSize;
		$intHeight	= imageSY( $srcImage ) / $intYSize;
		$colDraw	= imageColorExactAlpha( $srcImage, $rgbLine[ "R" ], $rgbLine[ "G" ], $rgbLine[ "B" ], $rgbLine[ "A" ] );
		for ( $x = 0; $x < $intWidth; $x++ ) {
			imageLine( $srcImage, $x * $intXSize + $intXOffset, 0, $x * $intXSize + $intXOffset, $intHeight * $intYSize, $colDraw );
		}
		for ( $y = 0; $y < $intHeight; $y++ ) {
			imageLine( $srcImage, 0, $y * $intYSize + $intYOffset, $intWidth * $intXSize, $y * $intYSize + $intYOffset, $colDraw );
		}
	}

	function imageDrawInnerShadow( &$srcImage, $intBorder = 8, $rgbShadow = array( "R" => 0x00, "G" => 0x00, "B" => 0x00 ) ) {
		$intWidth	= imageSX( $srcImage );
		$intHeight	= imageSY( $srcImage );
		$arrGamma = array();
		for ( $i = 0; $i < $intBorder; $i++ ) {
			$arrGamma[ $i ] = 127.0 * pow( ( $i + 1 ) / $intBorder, 0.7 );
		}
		for ( $i = 0; $i < $intBorder; $i++ ) {
			$colDraw = imageColorExactAlpha( $srcImage, $rgbShadow[ "R" ], $rgbShadow[ "G" ], $rgbShadow[ "B" ], $arrGamma[ $i ] );
			imageLine( $srcImage, $i, $i, $intWidth - 1, $i, $colDraw );
			imageLine( $srcImage, $i, $i + 1, $i, $intHeight - 1, $colDraw );
		}
	}

	function imageDrawInnerGlow( &$srcImage, $intBorder = 8, $rgbGlow = array( "R" => 0xFF, "G" => 0xFF, "B" => 0xFF ) ) {
		$intWidth	= imageSX( $srcImage );
		$intHeight	= imageSY( $srcImage );
		$arrGamma = array();
		for ( $i = 0; $i < $intBorder; $i++ ) {
			$arrGamma[ $i ] = 127.0 * pow( ( $i + 1 ) / $intBorder, 0.7 );
		}
		for ( $i = 0; $i < $intBorder; $i++ ) {
			$colDraw = imageColorExactAlpha( $srcImage, $rgbGlow[ "R" ], $rgbGlow[ "G" ], $rgbGlow[ "B" ], $arrGamma[ $i ] );
			imageLine( $srcImage, $i, $i, $intWidth - $i - 1, $i, $colDraw );
			imageLine( $srcImage, $i, $i + 1, $i, $intHeight - $i - 1, $colDraw );
			imageLine( $srcImage, $intWidth - $i - 1, $i + 1, $intWidth - $i - 1, $intHeight - $i - 1, $colDraw );
			imageLine( $srcImage, $i + 1, $intHeight - $i - 1, $intWidth - $i - 2, $intHeight - $i - 1, $colDraw );
		}
	}

	function imageDrawText( &$srcImage, $intFontSize, $intAngle, $intXPos, $intYPos, $rgbText = array( "R" => 0xFF, "G" => 0xFF, "B" => 0xFF, "A" => 0x00 ), $strFontName, $strText ) {
		$intWidth	= imageSX( $srcImage );
		$intHeight	= imageSY( $srcImage );
		$strPath	= "_fonts/";
		$colDraw = imageColorExactAlpha( $srcImage, $rgbText[ "R" ], $rgbText[ "G" ], $rgbText[ "B" ], $rgbText[ "A" ] );
		imageTTFText( $srcImage, $intFontSize, $intAngle, $intXPos, $intYPos, $colDraw, $strPath.$strFontName, $strText );
	}

?>