Not using paint.net myself (actually making competing app), but since we're all helping each other out. (Yes, it seems new mesh format isn't saving as much data, width/height are smaller than original width/height)
Last bit of my code:
if (version === 2)
{
var width = stream.readUint32();
var height = stream.readUint32();
...
}
else // version === 4
{
var width = stream.readUint32();
var height = stream.readUint32();
if (width > 32768 || height > 32768) {
throw new Error("Liquify Mesh File - width or height too large");
}
var _unknown0 = stream.readUint32();
var _unknown1 = stream.readUint32();
var _unknown2 = stream.readUint32();
var _unknown3 = stream.readUint32();
var width2 = stream.readUint32();
var height2 = stream.readUint32();
var _unknown4 = stream.readUint32();
var _unknown5 = stream.readUint32();
var width3 = stream.readUint32();
var height3 = stream.readUint32();
var data = new Float32Array(width*height * 2);
for (var y = 0; y < height; ++y)
{
var x = 0;
while (x < width)
{
var skip = stream.readUint32();
x += skip;
if (x >= width) {
if (x !== width) {
throw new Error("Error in file");
}
continue;
}
var offset = (y * width + x) * 2;
var count = stream.readUint32();
for (var xend = x+count; x < xend; ++x) {
data[offset++] = stream.readFloat32() / width;
data[offset++] = stream.readFloat32() / height;
}
}
}
assert(stream.pos === stream.length);
