Abhishek Joshi
632 lines
28 KiB
Python
632 lines
28 KiB
Python
import numpy as np
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import open3d as o3d
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from usd_utils import *
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from mujoco import mjtGeom
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from pxr import Gf, Sdf, Vt
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from typing import Optional, List
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from mujoco import _structs, _enums
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from pxr import Usd, UsdGeom, UsdShade, UsdLux
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class USDMesh:
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def __init__(
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self,
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stage: Usd.Stage,
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model: _structs.MjModel,
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geom: _structs.MjvGeom,
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objid: int,
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dataid: int,
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rgba: List[int] = [1,1,1,1],
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texture_file: Optional[str] = None
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):
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""" Initializes a new USD mesh
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Args:
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model: an MjModel instance.
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dataid: id of the mesh
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texture_file: texture associated with the mesh
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"""
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self.stage = stage
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self.model = model
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self.geom = geom
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self.objid = objid
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self.rgba = rgba
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self.dataid = dataid
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self.texture_file = texture_file
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xform_path = f'/World/Mesh_Xform_{objid}'
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mesh_path= f'{xform_path}/Mesh_{objid}'
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self.usd_xform = UsdGeom.Xform.Define(stage, xform_path)
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self.usd_mesh = UsdGeom.Mesh.Define(stage, mesh_path)
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self.usd_prim = stage.GetPrimAtPath(mesh_path)
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# setting mesh structure properties
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mesh_vert, mesh_face, mesh_facenum = self._get_mesh_geometry()
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self.usd_mesh.GetPointsAttr().Set(mesh_vert)
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self.usd_mesh.GetFaceVertexCountsAttr().Set([3 for _ in range(mesh_facenum)])
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self.usd_mesh.GetFaceVertexIndicesAttr().Set(mesh_face)
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# setting mesh uv properties
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mesh_texcoord, mesh_facetexcoord = self._get_uv_geometry()
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self.texcoords = UsdGeom.PrimvarsAPI(self.usd_mesh).CreatePrimvar("UVMap",
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Sdf.ValueTypeNames.TexCoord2fArray,
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UsdGeom.Tokens.faceVarying)
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self.texcoords.Set(mesh_texcoord)
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self.texcoords.SetIndices(Vt.IntArray(mesh_facetexcoord.tolist()))
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self._attach_material()
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# defining ops required by update function
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self.transform_op = self.usd_xform.AddTransformOp()
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def get_facetexcoord_ranges(self, nmesh, arr):
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facetexcoords_ranges = [0]
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running_sum = 0
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for i in range(nmesh):
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running_sum += arr[i] * 3
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facetexcoords_ranges.append(running_sum)
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return facetexcoords_ranges
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def _get_uv_geometry(self):
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mesh_texcoord_adr_from = self.model.mesh_texcoordadr[self.dataid]
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mesh_texcoord_adr_to = self.model.mesh_texcoordadr[self.dataid+1] if self.dataid < self.model.nmesh - 1 else len(self.model.mesh_texcoord)
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mesh_texcoord = self.model.mesh_texcoord[mesh_texcoord_adr_from:mesh_texcoord_adr_to]
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mesh_facetexcoord_ranges = self.get_facetexcoord_ranges(self.model.nmesh, self.model.mesh_facenum)
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mesh_facetexcoord = self.model.mesh_facetexcoord.flatten()
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mesh_facetexcoord = mesh_facetexcoord[mesh_facetexcoord_ranges[self.dataid]:mesh_facetexcoord_ranges[self.dataid+1]]
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return mesh_texcoord, mesh_facetexcoord
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def _get_mesh_geometry(self):
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# get mesh geometry structure from reading the mjModel
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mesh_vert_adr_from = self.model.mesh_vertadr[self.dataid]
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mesh_vert_adr_to = self.model.mesh_vertadr[self.dataid+1] if self.dataid < self.model.nmesh - 1 else len(self.model.mesh_vert)
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mesh_vert = self.model.mesh_vert[mesh_vert_adr_from:mesh_vert_adr_to]
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mesh_face_adr_from = self.model.mesh_faceadr[self.dataid]
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mesh_face_adr_to = self.model.mesh_faceadr[self.dataid+1] if self.dataid < self.model.nmesh - 1 else len(self.model.mesh_face)
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mesh_face = self.model.mesh_face[mesh_face_adr_from:mesh_face_adr_to]
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mesh_facenum = self.model.mesh_facenum[self.dataid]
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return mesh_vert, mesh_face, mesh_facenum
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def _attach_material(self):
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mtl_path = Sdf.Path(f"/World/_materials/Material_{self.objid}")
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mtl = UsdShade.Material.Define(self.stage, mtl_path)
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if self.texture_file:
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bsdf_shader = UsdShade.Shader.Define(self.stage, mtl_path.AppendPath("Principled_BSDF"))
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image_shader = UsdShade.Shader.Define(self.stage, mtl_path.AppendPath("Image_Texture"))
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uvmap_shader = UsdShade.Shader.Define(self.stage, mtl_path.AppendPath("uvmap"))
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# setting the bsdf shader attributes
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bsdf_shader.CreateIdAttr("UsdPreviewSurface")
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bsdf_shader.CreateInput("diffuseColor", Sdf.ValueTypeNames.Color3f).ConnectToSource(image_shader.ConnectableAPI(), "rgb")
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bsdf_shader.CreateInput("opacity", Sdf.ValueTypeNames.Float).Set(float(self.rgba[-1]))
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bsdf_shader.CreateInput("roughness", Sdf.ValueTypeNames.Float).Set(0.5)
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bsdf_shader.CreateInput("metallic", Sdf.ValueTypeNames.Float).Set(0.0)
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mtl.CreateSurfaceOutput().ConnectToSource(bsdf_shader.ConnectableAPI(), "surface")
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self.usd_mesh.GetPrim().ApplyAPI(UsdShade.MaterialBindingAPI)
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UsdShade.MaterialBindingAPI(self.usd_mesh).Bind(mtl)
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# setting the image texture attributes
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image_shader.CreateIdAttr("UsdUVTexture")
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image_shader.CreateInput("file", Sdf.ValueTypeNames.Asset).Set(self.texture_file)
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image_shader.CreateInput("sourceColorSpace", Sdf.ValueTypeNames.Token).Set("sRGB")
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image_shader.CreateInput("wrapS", Sdf.ValueTypeNames.Token).Set("repeat")
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image_shader.CreateInput("wrapT", Sdf.ValueTypeNames.Token).Set("repeat")
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image_shader.CreateInput("st", Sdf.ValueTypeNames.Float2).ConnectToSource(uvmap_shader.ConnectableAPI(), "result")
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image_shader.CreateOutput('rgb', Sdf.ValueTypeNames.Float3)
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# setting uvmap shader attributes
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uvmap_shader.CreateIdAttr("UsdPrimvarReader_float2")
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uvmap_shader.CreateInput("varname", Sdf.ValueTypeNames.Token).Set("UVMap")
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uvmap_shader.CreateOutput('results', Sdf.ValueTypeNames.Float2)
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else:
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bsdf_shader = UsdShade.Shader.Define(self.stage, mtl_path.AppendPath("Principled_BSDF"))
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# settings the bsdf shader attributes
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bsdf_shader.CreateIdAttr("UsdPreviewSurface")
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bsdf_shader.CreateInput("diffuseColor", Sdf.ValueTypeNames.Color3f).Set(tuple(self.rgba[:3]))
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bsdf_shader.CreateInput("opacity", Sdf.ValueTypeNames.Float).Set(float(self.rgba[-1]))
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bsdf_shader.CreateInput("roughness", Sdf.ValueTypeNames.Float).Set(0.5)
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bsdf_shader.CreateInput("metallic", Sdf.ValueTypeNames.Float).Set(0.0)
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mtl.CreateSurfaceOutput().ConnectToSource(bsdf_shader.ConnectableAPI(), "surface")
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self.usd_mesh.GetPrim().ApplyAPI(UsdShade.MaterialBindingAPI)
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UsdShade.MaterialBindingAPI(self.usd_mesh).Bind(mtl)
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def update(
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self,
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pos: np.array,
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mat: np.array,
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frame: int
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):
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transformation_mat = create_transform_matrix(rotation_matrix=mat, translation_vector=pos).T
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self.transform_op.Set(Gf.Matrix4d(transformation_mat.tolist()), frame)
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class USDPrimitiveMesh:
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def __init__(self,
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stage: Usd.Stage,
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geom: _structs.MjvGeom,
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objid: int,
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rgba: List[int] = [1,1,1,1],
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texture_file: Optional[str] = None):
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self.stage = stage
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self.geom = geom
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self.objid = objid
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self.rgba = rgba
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self.texture_file = texture_file
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self.prim_mesh = None
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def _get_uv_geometry(self):
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assert self.prim_mesh
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x_scale, y_scale = self.geom.texrepeat
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mesh_texcoord = np.array(self.prim_mesh.triangle_uvs)
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mesh_facetexcoord = np.asarray(self.prim_mesh.triangles)
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mesh_texcoord[:, 0] *= x_scale
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mesh_texcoord[:, 1] *= y_scale
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return mesh_texcoord, mesh_facetexcoord.flatten()
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def _get_mesh_geometry(self):
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assert self.prim_mesh
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# get mesh geometry from the open3d mesh model
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mesh_vert = np.asarray(self.prim_mesh.vertices)
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mesh_face = np.asarray(self.prim_mesh.triangles)
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return mesh_vert, mesh_face, len(mesh_face)
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def _attach_material(self):
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mtl_path = Sdf.Path(f"/World/_materials/Material_{self.objid}")
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mtl = UsdShade.Material.Define(self.stage, mtl_path)
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if self.texture_file:
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# remove all code in this if block
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bsdf_shader = UsdShade.Shader.Define(self.stage, mtl_path.AppendPath("Principled_BSDF"))
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image_shader = UsdShade.Shader.Define(self.stage, mtl_path.AppendPath("Image_Texture"))
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uvmap_shader = UsdShade.Shader.Define(self.stage, mtl_path.AppendPath("uvmap"))
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# setting the bsdf shader attributes
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bsdf_shader.CreateIdAttr("UsdPreviewSurface")
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bsdf_shader.CreateInput("diffuseColor", Sdf.ValueTypeNames.Color3f).ConnectToSource(image_shader.ConnectableAPI(), "rgb")
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bsdf_shader.CreateInput("opacity", Sdf.ValueTypeNames.Float).Set(float(self.rgba[-1]))
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bsdf_shader.CreateInput("roughness", Sdf.ValueTypeNames.Float).Set(0.5)
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bsdf_shader.CreateInput("metallic", Sdf.ValueTypeNames.Float).Set(0.0)
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mtl.CreateSurfaceOutput().ConnectToSource(bsdf_shader.ConnectableAPI(), "surface")
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self.usd_mesh.GetPrim().ApplyAPI(UsdShade.MaterialBindingAPI)
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UsdShade.MaterialBindingAPI(self.usd_mesh).Bind(mtl)
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# setting the image texture attributes
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image_shader.CreateIdAttr("UsdUVTexture")
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image_shader.CreateInput("file", Sdf.ValueTypeNames.Asset).Set(self.texture_file)
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image_shader.CreateInput("sourceColorSpace", Sdf.ValueTypeNames.Token).Set("sRGB")
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image_shader.CreateInput("wrapS", Sdf.ValueTypeNames.Token).Set("repeat")
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image_shader.CreateInput("wrapT", Sdf.ValueTypeNames.Token).Set("repeat")
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image_shader.CreateInput("st", Sdf.ValueTypeNames.Float2).ConnectToSource(uvmap_shader.ConnectableAPI(), "result")
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image_shader.CreateOutput('rgb', Sdf.ValueTypeNames.Float3)
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# setting uvmap shader attributes
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uvmap_shader.CreateIdAttr("UsdPrimvarReader_float2")
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uvmap_shader.CreateInput("varname", Sdf.ValueTypeNames.Token).Set("UVMap")
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uvmap_shader.CreateOutput('results', Sdf.ValueTypeNames.Float2)
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else:
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bsdf_shader = UsdShade.Shader.Define(self.stage, mtl_path.AppendPath("Principled_BSDF"))
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# settings the bsdf shader attributes
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bsdf_shader.CreateIdAttr("UsdPreviewSurface")
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bsdf_shader.CreateInput("diffuseColor", Sdf.ValueTypeNames.Color3f).Set(tuple(self.rgba[:3]))
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bsdf_shader.CreateInput("opacity", Sdf.ValueTypeNames.Float).Set(float(self.rgba[-1]))
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bsdf_shader.CreateInput("roughness", Sdf.ValueTypeNames.Float).Set(0.5)
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bsdf_shader.CreateInput("metallic", Sdf.ValueTypeNames.Float).Set(0.0)
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mtl.CreateSurfaceOutput().ConnectToSource(bsdf_shader.ConnectableAPI(), "surface")
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self.usd_mesh.GetPrim().ApplyAPI(UsdShade.MaterialBindingAPI)
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UsdShade.MaterialBindingAPI(self.usd_mesh).Bind(mtl)
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def update(
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self,
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pos: np.array,
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mat: np.array,
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frame: int
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):
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transformation_mat = create_transform_matrix(rotation_matrix=mat, translation_vector=pos).T
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self.transform_op.Set(Gf.Matrix4d(transformation_mat.tolist()), frame)
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class USDPrimitive:
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def __init__(self,
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stage: Usd.Stage,
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geom: _structs.MjvGeom,
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objid: int,
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rgba: List[int] = [1,1,1,1],
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texture_file: Optional[str] = None):
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self.stage = stage
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self.geom = geom
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self.objid = objid
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self.rgba = rgba
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self.texture_file = texture_file
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def _attach_material(self):
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mtl_path = Sdf.Path(f"/World/_materials/Material_{self.objid}")
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mtl = UsdShade.Material.Define(self.stage, mtl_path)
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if self.texture_file:
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bsdf_shader = UsdShade.Shader.Define(self.stage, mtl_path.AppendPath("Principled_BSDF"))
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image_shader = UsdShade.Shader.Define(self.stage, mtl_path.AppendPath("Image_Texture"))
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uvmap_shader = UsdShade.Shader.Define(self.stage, mtl_path.AppendPath("uvmap"))
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# settings the bsdf shader attributes
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bsdf_shader.CreateIdAttr("UsdPreviewSurface")
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bsdf_shader.CreateInput("diffuseColor", Sdf.ValueTypeNames.Color3f).ConnectToSource(image_shader.ConnectableAPI(), "rgb")
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bsdf_shader.CreateInput("opacity", Sdf.ValueTypeNames.Float).Set(float(self.rgba[-1]))
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bsdf_shader.CreateInput("roughness", Sdf.ValueTypeNames.Float).Set(0.5)
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bsdf_shader.CreateInput("metallic", Sdf.ValueTypeNames.Float).Set(0.0)
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mtl.CreateSurfaceOutput().ConnectToSource(bsdf_shader.ConnectableAPI(), "surface")
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self.usd_primitive_shape.GetPrim().ApplyAPI(UsdShade.MaterialBindingAPI)
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UsdShade.MaterialBindingAPI(self.usd_primitive_shape).Bind(mtl)
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# setting the image texture attributes
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image_shader.CreateIdAttr("UsdUVTexture")
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image_shader.CreateInput("file", Sdf.ValueTypeNames.Asset).Set(self.texture_file)
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image_shader.CreateInput("sourceColorSpace", Sdf.ValueTypeNames.Token).Set("sRGB")
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image_shader.CreateInput("st", Sdf.ValueTypeNames.Float2).ConnectToSource(uvmap_shader.ConnectableAPI(), "result")
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image_shader.CreateOutput('rgb', Sdf.ValueTypeNames.Float3)
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# setting uvmap shader attributes
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uvmap_shader.CreateIdAttr("UsdPrimvarReader_float2")
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uvmap_shader.CreateInput("varname", Sdf.ValueTypeNames.Token).Set("UVMap")
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uvmap_shader.CreateOutput('results', Sdf.ValueTypeNames.Float2)
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else:
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bsdf_shader = UsdShade.Shader.Define(self.stage, mtl_path.AppendPath("Principled_BSDF"))
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# settings the bsdf shader attributes
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bsdf_shader.CreateIdAttr("UsdPreviewSurface")
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bsdf_shader.CreateInput("diffuseColor", Sdf.ValueTypeNames.Color3f).Set(tuple(self.rgba[:3]))
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bsdf_shader.CreateInput("opacity", Sdf.ValueTypeNames.Float).Set(float(self.rgba[-1]))
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bsdf_shader.CreateInput("roughness", Sdf.ValueTypeNames.Float).Set(0.5)
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bsdf_shader.CreateInput("metallic", Sdf.ValueTypeNames.Float).Set(0.0)
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mtl.CreateSurfaceOutput().ConnectToSource(bsdf_shader.ConnectableAPI(), "surface")
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self.usd_primitive_shape.GetPrim().ApplyAPI(UsdShade.MaterialBindingAPI)
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UsdShade.MaterialBindingAPI(self.usd_primitive_shape).Bind(mtl)
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def update(
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self,
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pos: np.array,
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mat: np.array,
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frame: int
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):
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transformation_mat = create_transform_matrix(rotation_matrix=mat, translation_vector=pos).T
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self.transform_op.Set(Gf.Matrix4d(transformation_mat.tolist()), frame)
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class USDCapsule(USDPrimitive):
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def __init__(self,
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stage: Usd.Stage,
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geom: _structs.MjvGeom,
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objid: int,
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rgba: List[int] = [1,1,1,1],
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texture_file: Optional[str] = None):
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super().__init__(stage,
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geom,
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objid,
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rgba,
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texture_file)
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xform_path = f'/World/Capsule_Xform_{objid}'
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capsule_path = f'{xform_path}/Capsule_{objid}'
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self.usd_xform = UsdGeom.Xform.Define(stage, xform_path)
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self.usd_primitive_shape = UsdGeom.Capsule.Define(stage, capsule_path)
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self.usd_prim = stage.GetPrimAtPath(capsule_path)
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# defining ops required by update function
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self.transform_op = self.usd_xform.AddTransformOp()
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self.scale_op = self.usd_xform.AddScaleOp()
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# setting attributes for the shape
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self._set_size_attributes()
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self._attach_material()
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def _set_size_attributes(self):
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self.usd_primitive_shape.GetRadiusAttr().Set(float(self.geom.size[0]))
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self.usd_primitive_shape.GetHeightAttr().Set(float(self.geom.size[2]*2)) # mujoco gives the half length
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class USDEllipsoid(USDPrimitive):
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def __init__(self,
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stage: Usd.Stage,
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geom: _structs.MjvGeom,
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objid: int,
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rgba: List[int] = [1,1,1,1],
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texture_file: Optional[str] = None):
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super().__init__(stage,
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geom,
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objid,
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rgba,
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texture_file)
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xform_path = f'/World/Ellipsoid_Xform_{objid}'
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ellipsoid_path = f'{xform_path}/Ellipsoid_{objid}'
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self.usd_xform = UsdGeom.Xform.Define(stage, xform_path)
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self.usd_primitive_shape = UsdGeom.Sphere.Define(stage, ellipsoid_path)
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self.usd_prim = stage.GetPrimAtPath(ellipsoid_path)
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# defining ops required by update function
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self.transform_op = self.usd_xform.AddTransformOp()
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self.scale_op = self.usd_xform.AddScaleOp()
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# setting attributes for the shape
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self._set_size_attributes()
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self._attach_material()
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def _set_size_attributes(self):
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self.scale_op.Set(Gf.Vec3d(self.geom.size.tolist()))
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class USDCubeMesh(USDPrimitiveMesh):
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def __init__(self,
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stage: Usd.Stage,
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geom: _structs.MjvGeom,
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objid: int,
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rgba: List[int] = [1,1,1,1],
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texture_file: Optional[str] = None):
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super().__init__(stage,
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geom,
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objid,
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rgba,
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texture_file)
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xform_path = f'/World/CubeMesh_Xform_{objid}'
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mesh_path= f'{xform_path}/CubeMesh_{objid}'
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self.usd_xform = UsdGeom.Xform.Define(stage, xform_path)
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self.usd_mesh = UsdGeom.Mesh.Define(stage, mesh_path)
|
|
self.usd_prim = stage.GetPrimAtPath(mesh_path)
|
|
|
|
self.prim_mesh = o3d.geometry.TriangleMesh.create_box(width=self.geom.size[0]*2,
|
|
height=self.geom.size[1]*2,
|
|
depth=self.geom.size[2]*2,
|
|
create_uv_map=True,
|
|
map_texture_to_each_face=True)
|
|
|
|
self.prim_mesh.translate(-self.prim_mesh.get_center())
|
|
|
|
mesh_vert, mesh_face, mesh_facenum = self._get_mesh_geometry()
|
|
self.usd_mesh.GetPointsAttr().Set(mesh_vert)
|
|
self.usd_mesh.GetFaceVertexCountsAttr().Set([3 for _ in range(mesh_facenum)])
|
|
self.usd_mesh.GetFaceVertexIndicesAttr().Set(mesh_face)
|
|
|
|
# setting mesh uv properties
|
|
mesh_texcoord, mesh_facetexcoord = self._get_uv_geometry()
|
|
self.texcoords = UsdGeom.PrimvarsAPI(self.usd_mesh).CreatePrimvar("UVMap",
|
|
Sdf.ValueTypeNames.TexCoord2fArray,
|
|
UsdGeom.Tokens.faceVarying)
|
|
|
|
self.texcoords.Set(mesh_texcoord)
|
|
self.texcoords.SetIndices(Vt.IntArray([i for i in range(mesh_facenum*3)]))
|
|
|
|
# setting attributes for the shape
|
|
self._attach_material()
|
|
|
|
# defining ops required by update function
|
|
self.transform_op = self.usd_xform.AddTransformOp()
|
|
|
|
class USDSphereMesh(USDPrimitiveMesh):
|
|
def __init__(self,
|
|
stage: Usd.Stage,
|
|
geom: _structs.MjvGeom,
|
|
objid: int,
|
|
rgba: List[int] = [1,1,1,1],
|
|
texture_file: Optional[str] = None):
|
|
|
|
super().__init__(stage,
|
|
geom,
|
|
objid,
|
|
rgba,
|
|
texture_file)
|
|
|
|
xform_path = f'/World/SphereMesh_Xform_{objid}'
|
|
mesh_path= f'{xform_path}/SphereMesh_{objid}'
|
|
self.usd_xform = UsdGeom.Xform.Define(stage, xform_path)
|
|
self.usd_mesh = UsdGeom.Mesh.Define(stage, mesh_path)
|
|
self.usd_prim = stage.GetPrimAtPath(mesh_path)
|
|
|
|
self.prim_mesh = o3d.geometry.TriangleMesh.create_sphere(radius=float(self.geom.size[0]),
|
|
create_uv_map=True)
|
|
|
|
self.prim_mesh.translate(-self.prim_mesh.get_center())
|
|
|
|
mesh_vert, mesh_face, mesh_facenum = self._get_mesh_geometry()
|
|
self.usd_mesh.GetPointsAttr().Set(mesh_vert)
|
|
self.usd_mesh.GetFaceVertexCountsAttr().Set([3 for _ in range(mesh_facenum)])
|
|
self.usd_mesh.GetFaceVertexIndicesAttr().Set(mesh_face)
|
|
|
|
# setting mesh uv properties
|
|
mesh_texcoord, mesh_facetexcoord = self._get_uv_geometry()
|
|
self.texcoords = UsdGeom.PrimvarsAPI(self.usd_mesh).CreatePrimvar("UVMap",
|
|
Sdf.ValueTypeNames.TexCoord2fArray,
|
|
UsdGeom.Tokens.faceVarying)
|
|
|
|
self.texcoords.Set(mesh_texcoord)
|
|
self.texcoords.SetIndices(Vt.IntArray([i for i in range(mesh_facenum*3)]))
|
|
|
|
# setting attributes for the shape
|
|
self._attach_material()
|
|
|
|
# defining ops required by update function
|
|
self.transform_op = self.usd_xform.AddTransformOp()
|
|
|
|
class USDCylinderMesh(USDPrimitiveMesh):
|
|
def __init__(self,
|
|
stage: Usd.Stage,
|
|
geom: _structs.MjvGeom,
|
|
objid: int,
|
|
rgba: List[int] = [1,1,1,1],
|
|
texture_file: Optional[str] = None):
|
|
|
|
super().__init__(stage,
|
|
geom,
|
|
objid,
|
|
rgba,
|
|
texture_file)
|
|
|
|
xform_path = f'/World/CylinderMesh_Xform_{objid}'
|
|
mesh_path= f'{xform_path}/CylinderMesh_{objid}'
|
|
self.usd_xform = UsdGeom.Xform.Define(stage, xform_path)
|
|
self.usd_mesh = UsdGeom.Mesh.Define(stage, mesh_path)
|
|
self.usd_prim = stage.GetPrimAtPath(mesh_path)
|
|
|
|
self.prim_mesh = o3d.geometry.TriangleMesh.create_cylinder(radius=self.geom.size[0],
|
|
height=self.geom.size[2]*2,
|
|
create_uv_map=True)
|
|
|
|
self.prim_mesh.translate(-self.prim_mesh.get_center())
|
|
|
|
mesh_vert, mesh_face, mesh_facenum = self._get_mesh_geometry()
|
|
self.usd_mesh.GetPointsAttr().Set(mesh_vert)
|
|
self.usd_mesh.GetFaceVertexCountsAttr().Set([3 for _ in range(mesh_facenum)])
|
|
self.usd_mesh.GetFaceVertexIndicesAttr().Set(mesh_face)
|
|
|
|
# setting mesh uv properties
|
|
mesh_texcoord, mesh_facetexcoord = self._get_uv_geometry()
|
|
self.texcoords = UsdGeom.PrimvarsAPI(self.usd_mesh).CreatePrimvar("UVMap",
|
|
Sdf.ValueTypeNames.TexCoord2fArray,
|
|
UsdGeom.Tokens.faceVarying)
|
|
|
|
self.texcoords.Set(mesh_texcoord)
|
|
self.texcoords.SetIndices(Vt.IntArray([i for i in range(mesh_facenum*3)]))
|
|
|
|
# setting attributes for the shape
|
|
self._attach_material()
|
|
|
|
# defining ops required by update function
|
|
self.transform_op = self.usd_xform.AddTransformOp()
|
|
|
|
class USDPlaneMesh(USDPrimitiveMesh):
|
|
def __init__(self,
|
|
stage: Usd.Stage,
|
|
geom: _structs.MjvGeom,
|
|
objid: int,
|
|
rgba: List[int] = [1,1,1,1],
|
|
texture_file: Optional[str] = None):
|
|
|
|
super().__init__(stage,
|
|
geom,
|
|
objid,
|
|
rgba,
|
|
texture_file)
|
|
|
|
xform_path = f'/World/Plane_Xform_{objid}'
|
|
plane_path = f'{xform_path}/PlaneMesh_{objid}'
|
|
self.usd_xform = UsdGeom.Xform.Define(stage, xform_path)
|
|
self.usd_mesh = UsdGeom.Mesh.Define(stage, plane_path)
|
|
self.usd_prim = stage.GetPrimAtPath(plane_path)
|
|
|
|
self.prim_mesh = o3d.geometry.TriangleMesh.create_box(width=self.geom.size[0]*2 if self.geom.size[0] > 0 else 100,
|
|
height=self.geom.size[1]*2 if self.geom.size[1] > 0 else 100,
|
|
depth=0.001,
|
|
create_uv_map=True,
|
|
map_texture_to_each_face=True)
|
|
|
|
self.prim_mesh.translate(-self.prim_mesh.get_center())
|
|
|
|
mesh_vert, mesh_face, mesh_facenum = self._get_mesh_geometry()
|
|
self.usd_mesh.GetPointsAttr().Set(mesh_vert)
|
|
self.usd_mesh.GetFaceVertexCountsAttr().Set([3 for _ in range(mesh_facenum)])
|
|
self.usd_mesh.GetFaceVertexIndicesAttr().Set(mesh_face)
|
|
|
|
# setting mesh uv properties
|
|
mesh_texcoord, mesh_facetexcoord = self._get_uv_geometry()
|
|
self.texcoords = UsdGeom.PrimvarsAPI(self.usd_mesh).CreatePrimvar("UVMap",
|
|
Sdf.ValueTypeNames.TexCoord2fArray,
|
|
UsdGeom.Tokens.faceVarying)
|
|
|
|
self.texcoords.Set(mesh_texcoord)
|
|
self.texcoords.SetIndices(Vt.IntArray([i for i in range(mesh_facenum*3)]))
|
|
|
|
# setting attributes for the shape
|
|
self._attach_material()
|
|
|
|
# defining ops required by update function
|
|
self.transform_op = self.usd_xform.AddTransformOp()
|
|
|
|
class USDLight:
|
|
def __init__(self,
|
|
stage: Usd.Stage,
|
|
objid: int,
|
|
radius: Optional[float] = 0.7):
|
|
self.stage = stage
|
|
|
|
xform_path = f'/World/Light_Xform_{objid}'
|
|
light_path = f'{xform_path}/Light_{objid}'
|
|
self.usd_xform = UsdGeom.Xform.Define(stage, xform_path)
|
|
self.usd_light = UsdLux.SphereLight.Define(stage, light_path)
|
|
self.usd_prim = stage.GetPrimAtPath(light_path)
|
|
|
|
# we assume in mujoco that all lights are point lights
|
|
self.usd_light.GetRadiusAttr().Set(radius)
|
|
self.usd_light.GetTreatAsPointAttr().Set(False)
|
|
self.usd_light.GetNormalizeAttr().Set(True)
|
|
|
|
# defining ops required by update function
|
|
self.translate_op = self.usd_xform.AddTranslateOp()
|
|
|
|
def update(self,
|
|
pos: np.array,
|
|
intensity: int,
|
|
color: np.array,
|
|
frame: int):
|
|
self.translate_op.Set(Gf.Vec3d(pos.tolist()), frame)
|
|
|
|
if not np.any(pos):
|
|
intensity = 0
|
|
|
|
self.usd_light.GetIntensityAttr().Set(intensity)
|
|
self.usd_light.GetColorAttr().Set(Gf.Vec3d(color.tolist()))
|
|
|
|
class USDCamera:
|
|
def __init__(self,
|
|
stage: Usd.Stage,
|
|
objid: int):
|
|
self.stage = stage
|
|
|
|
xform_path = f'/World/Camera_Xform_{objid}'
|
|
camera_path = f'{xform_path}/Camera_{objid}'
|
|
self.usd_xform = UsdGeom.Xform.Define(stage, xform_path)
|
|
self.usd_camera = UsdGeom.Camera.Define(stage, camera_path)
|
|
self.usd_prim = stage.GetPrimAtPath(camera_path)
|
|
|
|
# defining ops required by update function
|
|
self.transform_op = self.usd_xform.AddTransformOp()
|
|
|
|
self.usd_camera.CreateFocalLengthAttr().Set(18.14756) # default in omniverse
|
|
self.usd_camera.CreateFocusDistanceAttr().Set(400)
|
|
|
|
self.usd_camera.GetClippingRangeAttr().Set(Gf.Vec2f(1e-4, 1e6))
|
|
|
|
def update(self,
|
|
cam_pos: np.array,
|
|
cam_mat: np.array,
|
|
frame: int):
|
|
|
|
transformation_mat = create_transform_matrix(rotation_matrix=cam_mat, translation_vector=cam_pos).T
|
|
self.transform_op.Set(Gf.Matrix4d(transformation_mat.tolist()), frame)
|
|
|
|
|
|
|