{ "cells": [ { "cell_type": "code", "execution_count": 1, "metadata": {}, "outputs": [], "source": [ "import stl.mesh\n", "import numpy\n", "import trimesh\n", "import random\n", "\n", "import meshutil\n", "import examples" ] }, { "cell_type": "code", "execution_count": 2, "metadata": {}, "outputs": [], "source": [ "#mesh = examples.ram_horn()\n", "#mesh = examples.twist()\n", "#mesh = examples.twist_nonlinear()\n", "#mesh = examples.twist_from_gen()" ] }, { "cell_type": "code", "execution_count": 3, "metadata": {}, "outputs": [], "source": [ "mesh = examples.twisty_torus(400)" ] }, { "cell_type": "code", "execution_count": 4, "metadata": {}, "outputs": [], "source": [ "# what even is this?\n", "dx0=2\n", "frames=100\n", "b = numpy.array([\n", " [0, 0, 0],\n", " [1, 0, 0],\n", " [1, 0, 1],\n", " [0, 0, 1],\n", "], dtype=numpy.float64) - [0.5, 0.5, 0]\n", "ang = -numpy.pi*2 / frames\n", "# negative because of winding order annoyance\n", "mesh2 = meshutil.FaceVertexMesh.Empty()\n", "xf = meshutil.Transform() \\\n", " .translate(dx0, 0, 0)\n", "b0 = xf.apply_to(b)\n", "for layer in range(frames):\n", " b_sub0 = xf.apply_to(b)\n", " incr = meshutil.Transform().rotate([0,0,1], ang)\n", " b_sub1 = xf.compose(incr).apply_to(b)\n", " m = meshutil.join_boundary_simple(b_sub0, b_sub1)\n", " mesh2 = mesh2.concat(m)\n", " xf = xf.compose(incr)" ] }, { "cell_type": "code", "execution_count": 5, "metadata": {}, "outputs": [ { "name": "stderr", "output_type": "stream", "text": [ "face_normals didn't match triangles, ignoring!\n", "/home/hodapp/.local/lib/python3.6/site-packages/IPython/core/display.py:694: UserWarning: Consider using IPython.display.IFrame instead\n", " warnings.warn(\"Consider using IPython.display.IFrame instead\")\n" ] }, { "data": { "text/html": [ "" ], "text/plain": [ "" ] }, "execution_count": 5, "metadata": {}, "output_type": "execute_result" } ], "source": [ "# Work around some annoying-ass trimesh/threejs bug:\n", "wtf = meshutil.Transform().scale(0.1).translate(20,0,0)\n", "center = meshutil.Transform().translate(-0.5, -0.5, -0.5)\n", "base = meshutil.cube(open_xz=False).transform(center)\n", "base = base.transform(wtf)\n", "# to enable:\n", "mesh = mesh.concat(base)\n", "\n", "mesh_fname = \"twist.stl\"\n", "mesh.to_stl_mesh().save(mesh_fname)\n", "\n", "# TODO: Just use the mesh data directly (no sense in saving & re-loading)\n", "m = trimesh.load_mesh(mesh_fname)\n", "#m.show()\n", "scene = trimesh.Scene([m])\n", "scene.show()" ] }, { "cell_type": "code", "execution_count": null, "metadata": {}, "outputs": [], "source": [] } ], "metadata": { "kernelspec": { "display_name": "Python 3", "language": "python", "name": "python3" }, "language_info": { "codemirror_mode": { "name": "ipython", "version": 3 }, "file_extension": ".py", "mimetype": "text/x-python", "name": "python", "nbconvert_exporter": "python", "pygments_lexer": "ipython3", "version": "3.6.8" } }, "nbformat": 4, "nbformat_minor": 4 }