function make_cut_image($row, $verts, $width, $height)
{
$center = new vertex(0, 0, 0);
$image = imagecreatetruecolor($width, $height);
if (isset($_REQUEST['usealpha'])) {
$trans_color = imagecolorallocatealpha($image, 255, 255, 255, 0);
imagefill($image, 0, 0, $trans_color);
}
$verticies = explode("\n", $verts);
$start = new vertex(0, 0, 0);
$start->parse_llvector($verticies[0]);
$count = count($verticies);
$x = 0.0;
$t = 0.0;
$start_color = new vertex(0, 128, 0);
$end_color = new vertex(255, 255, 255);
$previous = $start;
foreach ($verticies as $point) {
$current = new vertex(0, 0, 0);
$current->parse_llvector($point);
$center->add($current);
++$x;
}
$center->mult(1.0 / $x);
$x = 0;
imagesetthickness($image, 2);
foreach ($verticies as $point) {
$t = $x / $count;
$current = new vertex(0, 0, 0);
$current->parse_llvector($point);
if ($verticies[0] != $point) {
$vcolor = $start_color->get_interp($end_color, $t);
$color = $vcolor->allocate_color($image);
fill_pie($image, $center, $previous, $current, $width, $height, $color);
}
$previous = $current;
++$x;
}
$color = imagecolorallocate($image, $end_color->x, $end_color->y, $end_color->z);
fill_pie($image, $center, $previous, $start, $width, $height, $color);
$x = 0;
foreach ($verticies as $point) {
++$x;
$t = $x / $count;
$current = new vertex(0, 0, 0);
$current->parse_llvector($point);
$current->x = ($current->x + 1) * 0.5;
$current->y = 1.0 - ($current->y + 1) * 0.5;
$current->x *= $width;
$current->y *= $height;
$color = $color = imagecolorallocate($image, 255 * $t, 0, 255 * (1 - $t));
imagefilledellipse($image, intval($current->x), intval($current->y), 8, 8, $color);
}
return $image;
}
function make_sculpty($verts, $sc, $o, $width, $height, $upsample, $smooth)
{
$image = imagecreatetruecolor($width, $height);
$scale = new vertex(0, 0, 0);
$orig = new vertex(0, 0, 0);
$orig->load($o);
$orig->mult(-1);
$scale->load($sc);
$scale->mult(0.5);
//Radius
$this_row = 0;
foreach ($verts as $vert_row) {
$x = 0;
$row = explode("|", $vert_row);
$point = FALSE;
if (count($row) == 1) {
$point = TRUE;
}
$y = $height - 1 - $this_row;
foreach ($row as $v) {
$vert = new vertex(0, 0, 0);
$vert->load(explode(",", $v));
$vert->add($orig);
$vert->combine($scale);
$vert = $vert->get_color();
$color = $vert->allocate_color($image);
if ($point) {
imageline($image, 0, $y, $width - 1, $y, $color);
break;
} else {
imagesetpixel($image, $x, $y, $color);
}
++$x;
if ($x >= $width) {
break;
}
}
$this_row++;
if ($this_row >= $height) {
break;
}
}
//Up-sample the image
if ($upsample) {
$new_h = $height * 2;
$new_w = $width * 2;
$image_resampled = imagecreatetruecolor($new_w, $new_h);
imagecopyresized($image_resampled, $image, 0, 0, 0, 0, $new_w, $new_h, $width, $height);
imagedestroy($image);
$image = $image_resampled;
}
if ($smooth == "gaussian") {
$gaussian = array(array(1.0, 2.0, 1.0), array(2.0, 4.0, 2.0), array(1.0, 2.0, 1.0));
imageconvolution($image, $gaussian, 16, 0);
}
if ($smooth == "linear") {
$linear = array(array(1.0, 1.0, 1.0), array(1.0, 1.0, 1.0), array(1.0, 1.0, 1.0));
imageconvolution($image, $linear, 9, 0);
}
return $image;
}