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Chris Hodapp 2019-09-16 14:53:20 +02:00
parent 7ec628c836
commit d846569130
2 changed files with 74 additions and 24 deletions
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39
Scratch.ipynb
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@ -7,32 +7,50 @@
"outputs": [], "outputs": [],
"source": [ "source": [
"import meshutil\n", "import meshutil\n",
"import stl.mesh" "import stl.mesh\n",
"import numpy"
] ]
}, },
{ {
"cell_type": "code", "cell_type": "code",
"execution_count": 2, "execution_count": 13,
"metadata": {}, "metadata": {},
"outputs": [], "outputs": [],
"source": [ "source": [
"c = meshutil.cube(open_xz=True)" "c = meshutil.cube(open_xz=False)\n",
"c1 = meshutil.cube_distort(0.3)\n",
"c1[\"vectors\"] = c1[\"vectors\"]/2 + [0,1,0]\n",
"c2 = meshutil.cube_distort(0.3)\n",
"c2[\"vectors\"] = c2[\"vectors\"]/2 + [0.5,1,0]\n",
"c3 = meshutil.cube_distort(0.3)\n",
"c3[\"vectors\"] = c3[\"vectors\"]/2 + [0,1,0.5]\n",
"c4 = meshutil.cube_distort(0.3)\n",
"c4[\"vectors\"] = c4[\"vectors\"]/2 + [0.5,1,0.5]"
] ]
}, },
{ {
"cell_type": "code", "cell_type": "code",
"execution_count": 3, "execution_count": 14,
"metadata": {}, "metadata": {},
"outputs": [], "outputs": [],
"source": [ "source": [
"mesh = stl.mesh.Mesh(c)\n", "d = numpy.concatenate([c,c1,c2,c3,c4])"
]
},
{
"cell_type": "code",
"execution_count": 15,
"metadata": {},
"outputs": [],
"source": [
"mesh = stl.mesh.Mesh(d)\n",
"mesh_fname = \"cube_test.stl\"\n", "mesh_fname = \"cube_test.stl\"\n",
"mesh.save(mesh_fname)" "mesh.save(mesh_fname)"
] ]
}, },
{ {
"cell_type": "code", "cell_type": "code",
"execution_count": 4, "execution_count": 16,
"metadata": {}, "metadata": {},
"outputs": [], "outputs": [],
"source": [ "source": [
@ -41,15 +59,14 @@
}, },
{ {
"cell_type": "code", "cell_type": "code",
"execution_count": 5, "execution_count": 17,
"metadata": {}, "metadata": {},
"outputs": [ "outputs": [
{ {
"name": "stderr", "name": "stderr",
"output_type": "stream", "output_type": "stream",
"text": [ "text": [
"/home/hodapp/.local/lib/python3.6/site-packages/IPython/core/display.py:694: UserWarning: Consider using IPython.display.IFrame instead\n", "face_normals didn't match triangles, ignoring!\n"
" warnings.warn(\"Consider using IPython.display.IFrame instead\")\n"
] ]
}, },
{ {
@ -247,7 +264,7 @@
"Math.pow(distanceToCamera,2)+\n", "Math.pow(distanceToCamera,2)+\n",
"Math.pow(distanceToCamera,2));camera.position.set(len,len,len);controls.update();camera.lookAt(boundingSphere.center);controls.target.set(boundingSphere.center.x,boundingSphere.center.y,boundingSphere.center.z);camera.updateProjectionMatrix();}\n", "Math.pow(distanceToCamera,2));camera.position.set(len,len,len);controls.update();camera.lookAt(boundingSphere.center);controls.target.set(boundingSphere.center.x,boundingSphere.center.y,boundingSphere.center.z);camera.updateProjectionMatrix();}\n",
"function centerControls(obj,camera,controls){const boundingBox=new THREE.Box3().setFromObject(obj);const boundingSphere=new THREE.Sphere();boundingBox.getBoundingSphere((target=boundingSphere));controls.update();controls.target.set(boundingSphere.center.x,boundingSphere.center.y,boundingSphere.center.z);}\n", "function centerControls(obj,camera,controls){const boundingBox=new THREE.Box3().setFromObject(obj);const boundingSphere=new THREE.Sphere();boundingBox.getBoundingSphere((target=boundingSphere));controls.update();controls.target.set(boundingSphere.center.x,boundingSphere.center.y,boundingSphere.center.z);}\n",
"function init(){scene=new THREE.Scene();scene.background=new THREE.Color(0xffffff);tracklight=new THREE.DirectionalLight(0xffffff,1.75);scene.add(tracklight);base64_data="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";;renderer=new THREE.WebGLRenderer({antialias:true});renderer.setPixelRatio(window.devicePixelRatio);renderer.setSize(window.innerWidth,window.innerHeight);document.body.appendChild(renderer.domElement);loader=new THREE.GLTFLoader();loader.load("data:text/plain;base64,"+base64_data,function(gltf){scene.add(gltf.scene);camera=gltf.cameras[0];controls=new THREE.TrackballControls(camera);controls.rotateSpeed=1.0;controls.zoomSpeed=1.2;controls.panSpeed=0.8;controls.noZoom=false;controls.noPan=false;controls.staticMoving=true;controls.dynamicDampingFactor=0.3;controls.keys=[65,83,68];controls.addEventListener("change",render);centerControls(scene,camera,controls);render();window.addEventListener("resize",onWindowResize,false);animate();});}\n", "function init(){scene=new THREE.Scene();scene.background=new THREE.Color(0xffffff);tracklight=new THREE.DirectionalLight(0xffffff,1.75);scene.add(tracklight);base64_data="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";;renderer=new THREE.WebGLRenderer({antialias:true});renderer.setPixelRatio(window.devicePixelRatio);renderer.setSize(window.innerWidth,window.innerHeight);document.body.appendChild(renderer.domElement);loader=new THREE.GLTFLoader();loader.load("data:text/plain;base64,"+base64_data,function(gltf){scene.add(gltf.scene);camera=gltf.cameras[0];controls=new THREE.TrackballControls(camera);controls.rotateSpeed=1.0;controls.zoomSpeed=1.2;controls.panSpeed=0.8;controls.noZoom=false;controls.noPan=false;controls.staticMoving=true;controls.dynamicDampingFactor=0.3;controls.keys=[65,83,68];controls.addEventListener("change",render);centerControls(scene,camera,controls);render();window.addEventListener("resize",onWindowResize,false);animate();});}\n",
"function onWindowResize(){camera.aspect=window.innerWidth/window.innerHeight;camera.updateProjectionMatrix();renderer.setSize(window.innerWidth,window.innerHeight);controls.handleResize();render();}\n", "function onWindowResize(){camera.aspect=window.innerWidth/window.innerHeight;camera.updateProjectionMatrix();renderer.setSize(window.innerWidth,window.innerHeight);controls.handleResize();render();}\n",
"function animate(){requestAnimationFrame(animate);controls.update();}\n", "function animate(){requestAnimationFrame(animate);controls.update();}\n",
"function render(){tracklight.position.copy(camera.position);renderer.render(scene,camera);}\n", "function render(){tracklight.position.copy(camera.position);renderer.render(scene,camera);}\n",
@ -258,7 +275,7 @@
"<IPython.core.display.HTML object>" "<IPython.core.display.HTML object>"
] ]
}, },
"execution_count": 5, "execution_count": 17,
"metadata": {}, "metadata": {},
"output_type": "execute_result" "output_type": "execute_result"
} }

57
meshutil.py
View File

@ -2,23 +2,56 @@ import stl.mesh
import numpy import numpy
import quaternion import quaternion
import quat
# (left/right, bottom/top, back/front)
# I'm using X to the right, Y up, Z inward
# (not that it really matters except for variable names)
lbf = numpy.array([0,0,0])
rbf = numpy.array([1,0,0])
ltf = numpy.array([0,1,0])
rtf = numpy.array([1,1,0])
lbb = numpy.array([0,0,1])
rbb = numpy.array([1,0,1])
ltb = numpy.array([0,1,1])
rtb = numpy.array([1,1,1])
def cube(open_xz=False): def cube(open_xz=False):
if open_xz: if open_xz:
data = numpy.zeros(8, dtype=stl.mesh.Mesh.dtype) data = numpy.zeros(8, dtype=stl.mesh.Mesh.dtype)
else: else:
data = numpy.zeros(12, dtype=stl.mesh.Mesh.dtype) data = numpy.zeros(12, dtype=stl.mesh.Mesh.dtype)
v = data["vectors"] v = data["vectors"]
v[0] = [[0,0,0], [1,1,0], [1,0,0]] v[0] = [lbf, rtf, rbf]
v[1] = [[0,0,0], [0,1,0], [1,1,0]] v[1] = [lbf, ltf, rtf]
v[2] = [[1,0,0], [1,1,1], [1,0,1]] v[2] = [rbf, rtb, rbb]
v[3] = [[1,0,0], [1,1,0], [1,1,1]] v[3] = [rbf, rtf, rtb]
v[4] = [[1,0,1], [0,1,1], [0,0,1]] v[4] = [rbb, ltb, lbb]
v[5] = [[1,0,1], [1,1,1], [0,1,1]] v[5] = [rbb, rtb, ltb]
v[6] = [[0,0,1], [0,1,0], [0,0,0]] v[6] = [lbb, ltf, lbf]
v[7] = [[0,0,1], [0,1,1], [0,1,0]] v[7] = [lbb, ltb, ltf]
if not open_xz: if not open_xz:
v[8] = [[0,1,0], [1,1,1], [1,1,0]] v[8] = [ltf, rtb, rtf]
v[9] = [[0,1,0], [0,1,1], [1,1,1]] v[9] = [ltf, ltb, rtb]
v[10] = [[0,0,0], [1,0,0], [1,0,1]] v[10] = [lbf, rbf, rbb]
v[11] = [[0,0,0], [1,0,1], [0,0,1]] v[11] = [lbf, rbb, lbb]
return data
def cube_distort(angle):
data = numpy.zeros(8, dtype=stl.mesh.Mesh.dtype)
v = data["vectors"]
q = quat.rotation_quaternion(numpy.array([-1,0,1]), angle)
ltf2 = quat.conjugate_by(ltf, q)[0,:]
rtf2 = quat.conjugate_by(rtf, q)[0,:]
ltb2 = quat.conjugate_by(ltb, q)[0,:]
rtb2 = quat.conjugate_by(rtb, q)[0,:]
# TODO: Just make these functions work right with single vectors
v[0] = [lbf, rtf2, rbf]
v[1] = [lbf, ltf2, rtf2]
v[2] = [rbf, rtb2, rbb]
v[3] = [rbf, rtf2, rtb2]
v[4] = [rbb, ltb2, lbb]
v[5] = [rbb, rtb2, ltb2]
v[6] = [lbb, ltf2, lbf]
v[7] = [lbb, ltb2, ltf2]
return data return data