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STL from python server to Three.js viewer example
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bin | |
.Python | |
lib | |
include | |
pip-selfcheck.json |
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<!DOCTYPE html> | |
<html lang="en"> | |
<head> | |
<title>three.js webgl - STL</title> | |
<meta charset="utf-8"> | |
<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0"> | |
</head> | |
<body> | |
<script src="https://cdnjs.cloudflare.com/ajax/libs/three.js/r78/three.min.js"></script> | |
<script src="http://threejs.org/examples/js/loaders/STLLoader.js"></script> | |
<script> | |
var scene = new THREE.Scene(); | |
var camera = new THREE.PerspectiveCamera( 75, window.innerWidth / window.innerHeight, 0.1, 1000 ); | |
camera.position.z = 5; | |
camera.position.y = 5 | |
var mesh = null; | |
var renderer = new THREE.WebGLRenderer(); | |
renderer.setSize( window.innerWidth, window.innerHeight ); | |
document.body.appendChild( renderer.domElement ); | |
var directionalLight = new THREE.DirectionalLight( 0xffffff, 0.5 ); | |
directionalLight.position.set( 1, 1, 0 ); | |
scene.add( directionalLight ); | |
var light = new THREE.AmbientLight( 0x404040 ); // soft white light | |
scene.add( light ); | |
var loader = new THREE.STLLoader(); | |
loader.load( '/object.stl', function ( geometry ) { | |
var material = new THREE.MeshPhongMaterial( { color: 0xff0000 } ); | |
mesh = new THREE.Mesh( geometry, material ); | |
mesh.position.set( 0, 0,0); | |
scene.add( mesh ); | |
camera.lookAt(mesh.position); | |
}); | |
function render() { | |
if(mesh!=null){ | |
mesh.rotation.y += 0.01; | |
} | |
requestAnimationFrame( render ); | |
renderer.render( scene, camera ); | |
} | |
render(); | |
</script> | |
</body> | |
</html> |
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flask | |
numpy-stl | |
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from flask import Flask,render_template,make_response | |
import numpy | |
from stl import mesh | |
from io import BytesIO | |
app = Flask(__name__) | |
@app.route('/object.stl') | |
def stl_gen(n=1): | |
# tetrahedron mesh | |
data = numpy.zeros(4, dtype=mesh.Mesh.dtype) | |
b1,b2,b3,t = (1,0,1),(0,0,-0.75),(-1,0,1),(0,1,0) | |
data['vectors'][0] = numpy.array([b1,b2,b3]) | |
data['vectors'][1] = numpy.array([b1,b2,t]) | |
data['vectors'][2] = numpy.array([b2,b3,t]) | |
data['vectors'][3] = numpy.array([b3,b1,t]) | |
object_mesh = mesh.Mesh(data, remove_empty_areas=False) | |
# numpy-stl does a poor job of being "API" ready.. | |
# needs a generic string-ready .write method | |
# (great opportunity for an open source contribution!) | |
# for now we use a file-like object, BytesIO, to fake it out | |
output = BytesIO() | |
object_mesh._write_ascii(output,"object.stl") | |
response = make_response(output.getvalue()) | |
return response | |
@app.route("/") | |
def index(): | |
return render_template("index.html") | |
if __name__ == "__main__": | |
import os,sys | |
if not os.path.exists("templates/index.html"): | |
print("You need to make a 'templates' folder and move index.html there") | |
sys.exit(1) | |
app.run() | |
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