Irei mostrar exemplos como essa poderosa ferramenta que é a Biblioteca GD pode fazer.
Folha
<?php$width = 1600;$height = 1200;$canvas = imagecreatetruecolor($width,$height);$white = imagecolorallocate($canvas,255,255,255);imagefill($canvas,0,0,$white);for ($n=1;$n<255;$n++) { $green[$n] = imagecolorallocatealpha($canvas,0,$n,0,105);}$max = 80000;$p1 = 79;$p2 = 89;$p3 = 98;$x = 0;$y = 0;for ($n=0;$n<$max;$n++) { $p = rand(0,100); $xt = $x; if ($p < $p1) { $x = (0.85*$x)+(0.04*$y)+0.075; $y = (-0.04*$xt)+(0.85*$y)+0.18; } elseif($p < $p2) { $x = (0.20*$x)-(0.26*$y)+0.4; $y = (0.23*$xt)+(0.22*$y)+0.045; } elseif($p < $p3) { $x = (-0.15*$x)+(0.28*$y)+0.575; $y = (0.26*$xt)+(0.24*$y)-0.086; } else { $x = 0.5; $y = 0.16*$y; } $diameter = rand(1,15); imagefilledellipse($canvas, $width-($width*$x), $height-($height*$y), $diameter, $diameter, $green[(100*$y)+(155*$x)]);}$i = imagecreatetruecolor($width/2, $height/2);imagecopyresampled($i, $canvas, 0, 0, 0, 0, ($width/2), ($height/2), $width, $height);header("Content-type: image/png");imagepng($i);?>
Copie o código e veja o resultado.
Preview:
Texto com sombra
<?php $title = "XTibia"; //Texto a ser colocado $source = imagecreatetruecolor(600,36); $white = imagecolorallocate($source,255,255,255); imagefill($source,0,0,$white); $black = imagecolorallocate($source,0,0,0); imagettftext($source,20,0,2,24,$black,"fontes/BAUHS93.TTF",$title); $image = gaussian_dropshadow($source); $black = imagecolorallocate($source,0,0,0); imagettftext($image,20,0,2,24,$red,"fontes/BAUHS93.TTF",$title); header("Content-type: image/png"); imagepng($image); function gaussian_dropshadow($original,$x_offset=4,$y_offset=4,$alpha=80) { $gauss_fact = array(1,2,4,8,16,24,16,8,4,2,1); $gauss_width = count($gauss_fact); $gauss_sum = array_sum($gauss_fact); $c = 0; $m_offset = floor($gauss_width/2); $temp1 = imagecreatetruecolor(imagesx($original)+($m_offset*2),imagesy($original)+($m_offset*2)); $white = imagecolorallocate($temp1,255,255,255); imagefill($temp1,0,0,$white); imagecopy($temp1, $original, $m_offset, $m_offset, 0, 0, imagesx($original),imagesy($original)); for ($y=0;$y<imagesy($temp1);$y++) { for ($x=0;$x<imagesx($temp1);$x++) { $t1 = imagecolorat($temp1,$x,$y); $p[$x][$y]['r'] = ($t1 >> 16) & 0xFF; $p[$x][$y]['g'] = ($t1 >> 8) & 0xFF; $p[$x][$y]['b'] = $t1 & 0xFF; $p1[$x][$y]['r'] = 255; $p1[$x][$y]['g'] = 255; $p1[$x][$y]['b'] = 255; } } $sumr=0; $sumg=0; $sumb=0; $w = imagesx($original); $h = imagesy($original); for($i=$m_offset;$i<$w+$m_offset;$i++){ for($j=$m_offset;$j<$h+$m_offset;$j++){ $sumr=0; $sumg=0; $sumb=0; for($k=0;$k<$gauss_width;$k++){ $xt = $i-(($gauss_width-1)>>1)+$k; $r=$p[$xt][$j]['r']; $g=$p[$xt][$j]['g']; $b=$p[$xt][$j]['b']; $sumr+=$r*$gauss_fact[$k]; $sumg+=$g*$gauss_fact[$k]; $sumb+=$b*$gauss_fact[$k]; } $p1[$i][$j]['r'] = $sumr/$gauss_sum; $p1[$i][$j]['g'] = $sumg/$gauss_sum; $p1[$i][$j]['b'] = $sumb/$gauss_sum; } } $temp2 = imagecreatetruecolor(imagesx($original),imagesy($original)); $white = imagecolorallocate($temp2,255,255,255); imagefill($temp2,0,0,$white); $w = imagesx($temp2); $h = imagesy($temp2); for($i=$m_offset;$i<$w+$m_offset;$i++){ for($j=$m_offset;$j<$h+$m_offset;$j++){ $sumr=0; $sumg=0; $sumb=0; for($k=0;$k<$gauss_width;$k++){ $xy = $j-(($gauss_width-1)>>1)+$k; $r=$p1[$i][$xy]['r']; $g=$p1[$i][$xy]['g']; $b=$p1[$i][$xy]['b']; $sumr+=$r*$gauss_fact[$k]; $sumg+=$g*$gauss_fact[$k]; $sumb+=$b*$gauss_fact[$k]; } $col = imagecolorallocatealpha($temp2,$sumr/$gauss_sum,$sumg/$gauss_sum,$sumb/$gauss_sum,$alpha); imagesetpixel($temp2,$i-$m_offset+$x_offset,$j-$m_offset+$y_offset,$col); } } return $temp2; }?>
No caso eu usei a fonte BAUHS93.TFF encontrada na pasta fontes.
Baixe ela clicando aqui.
Preview
Atualizarei assim que fazer mais.
