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Utility for converting a shapefile to a 3D model.

License: MIT License

JavaScript 100.00%

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TypeError: stream.on is not a function

在这个地方有问题

Final STL file empty and strange output

I heard about this node package from your excellent blog post. I haven't, however, been able to replicate your approach with my own shapefile. My code and shapefile is over at:

https://github.com/amoeba/3dmaps

The output I get it this:

$ node convert.js
bounds: Infinity Infinity -Infinity -Infinity (spherical)
pre-quantization: 111.195km (1.00°) 111.195km (1.00°)
topology: 0 arcs, 0 points
topojson done
simplification: effective minimum area 0.00
simplification: retained 0 / 0 points (NaN%)
making top planes
making side planes
making bottom planes
done making 3D planes

And the resulting STL file only contains:

solid
endsolid

Is it because of my strange projection? Something else? I've poked around your source to the best of my ability but I can't seem to figure out where I'm messing up.

Getting base height from z values

Hi @dougmccune

Thanks for the great library. I was wondering about submitting a pull request with some additional functionality so I thought I'd get some feedback.

I have a buildings dataset which contains

z values in the spatial data for the ground elevation of a building,
an attribute for the height of the building

Using shp2stl currently I can use the attribute for the height using the extrudeBy option which works great. However there is nothing that allows me to utilise the z value for ground elevation. So I was wondering if we could introduce a new option called getBaseHeightFromZ. The other option might be to only support a single base height per building which could be derived from an attributed similar to how extrudeBy works.

I've looked upstream and there are a few tweaks that would be required in the shapefile library to support getting z vales into geojson. The topojson conversion part works ok in retaining z values.

Are that any pitfalls that you could see in such an approach? I'm happy to submit a pull request if you're interested.

Regards,
Rowan

Cannot convert: node_modules/three/three.js:32605 for ( i = 0, il = triangles.length; i < il; i ++ ) {

Hello, I am trying to use your library on this dataset. I have the following script:

var fs = require('fs');
var shp2stl = require('shp2stl');
var file = '3D_domy.shp';
shp2stl.shp2stl(file,
    {
        width: 100,
        height: 10,
        extraBaseHeight: 0,
        extrudeBy: "REL_H",
        simplification: .8,
        binary: true,
        cutoutHoles: false,
        verbose: true,
        extrusionMode: 'straight'
    },
    function(err, stl) {
        fs.writeFileSync('brno.stl',  stl);
    }
);

However, it fails with the output:

bounds: -610515.495 -1169601.422 -588998.562 -1150146.302 (cartesian)
pre-quantization: 0.00021516933215169295 0.00019455120194551316
topology: 1704953 arcs, 3409907 points
topojson done
simplification: effective minimum area 0.00194
simplification: retained 3409907 / 3409907 points (100%)
making top planes
Duplicate point 75.87834675878348:45.606545977206764
Duplicate point 47.88109447881095:67.99900334326045
Duplicate point 47.72163847721639:68.22115425580363
Duplicate point 47.57133847571339:68.3893004726506
making side planes
making bottom planes
<pwdpath>/node_modules/three/three.js:32605
		for ( i = 0, il = triangles.length; i < il; i ++ ) {
		                            ^

TypeError: Cannot read property 'length' of null
    at Object.triangulateShape (<pwdpath>/node_modules/three/three.js:32605:31)
    at THREE.ShapeGeometry.addShape (<pwdpath>/node_modules/three/three.js:35513:32)
    at THREE.ShapeGeometry.addShapeList (<pwdpath>/node_modules/three/three.js:35458:8)
    at new THREE.ShapeGeometry (<pwdpath>/node_modules/three/three.js:35442:7)
    at THREE.Shape.makeGeometry (<pwdpath>/node_modules/three/three.js:32162:17)
    at <pwdpath>/node_modules/shp2stl/src/topojson2threejs.js:377:33
    at Array.forEach (<anonymous>)
    at topojson2threeJSBottomPlanes (<pwdpath>/node_modules/shp2stl/src/topojson2threejs.js:374:13)
    at topojson2threejs (<pwdpath>/node_modules/shp2stl/src/topojson2threejs.js:76:16)
    at topojson2stl (<pwdpath>/node_modules/shp2stl/src/shp2stl.js:77:21)

What could be the reason for that?

dougmccune / shp2stl Goto Github PK

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shp2stl's Issues

TypeError: stream.on is not a function

Final STL file empty and strange output

Getting base height from z values

Cannot convert: node_modules/three/three.js:32605 for ( i = 0, il = triangles.length; i < il; i ++ ) {

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