Open3D (C++ API)  0.12.0
ShapeUtil.h
Go to the documentation of this file.
1 // ----------------------------------------------------------------------------
2 // - Open3D: www.open3d.org -
3 // ----------------------------------------------------------------------------
4 // The MIT License (MIT)
5 //
6 // Copyright (c) 2018 www.open3d.org
7 //
8 // Permission is hereby granted, free of charge, to any person obtaining a copy
9 // of this software and associated documentation files (the "Software"), to deal
10 // in the Software without restriction, including without limitation the rights
11 // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
12 // copies of the Software, and to permit persons to whom the Software is
13 // furnished to do so, subject to the following conditions:
14 //
15 // The above copyright notice and this permission notice shall be included in
16 // all copies or substantial portions of the Software.
17 //
18 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
21 // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
22 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
23 // FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
24 // IN THE SOFTWARE.
25 // ----------------------------------------------------------------------------
26 
27 #pragma once
28 
29 #include "open3d/core/Dispatch.h"
30 #include "open3d/core/SizeVector.h"
31 #include "open3d/utility/Console.h"
32 
33 namespace open3d {
34 namespace core {
35 
36 class Tensor;
37 
38 namespace shape_util {
39 
48 bool IsCompatibleBroadcastShape(const SizeVector& l_shape,
49  const SizeVector& r_shape);
50 
58 SizeVector BroadcastedShape(const SizeVector& l_shape,
59  const SizeVector& r_shape);
60 
68 bool CanBeBrocastedToShape(const SizeVector& src_shape,
69  const SizeVector& dst_shape);
70 
78 SizeVector ReductionShape(const SizeVector& src_shape,
79  const SizeVector& dims,
80  bool keepdim);
81 
90 int64_t WrapDim(int64_t dim, int64_t max_dim, bool inclusive = false);
91 
98 SizeVector InferShape(SizeVector shape, int64_t num_elements);
99 
101 SizeVector Concat(const SizeVector& l_shape, const SizeVector& r_shape);
102 
104 SizeVector Iota(int64_t n);
105 
106 } // namespace shape_util
107 } // namespace core
108 } // namespace open3d
SizeVector BroadcastedShape(const SizeVector &l_shape, const SizeVector &r_shape)
Returns the broadcasted shape of two shapes.
Definition: ShapeUtil.cpp:75
SizeVector Concat(const SizeVector &l_shape, const SizeVector &r_shape)
Concatenate two shapes.
Definition: ShapeUtil.cpp:218
SizeVector ReductionShape(const SizeVector &src_shape, const SizeVector &dims, bool keepdim)
Returns the shape after reduction.
Definition: ShapeUtil.cpp:118
int64_t WrapDim(int64_t dim, int64_t max_dim, bool inclusive)
Wrap around negative dim.
Definition: ShapeUtil.cpp:150
SizeVector InferShape(SizeVector shape, int64_t num_elements)
Definition: ShapeUtil.cpp:169
bool IsCompatibleBroadcastShape(const SizeVector &l_shape, const SizeVector &r_shape)
Returns true if two shapes are compatible for broadcasting.
Definition: ShapeUtil.cpp:51
bool CanBeBrocastedToShape(const SizeVector &src_shape, const SizeVector &dst_shape)
Returns true if src_shape can be brocasted to dst_shape.
Definition: ShapeUtil.cpp:109
Definition: PinholeCameraIntrinsic.cpp:35
SizeVector Iota(int64_t n)
Returns a SizeVector of {0, 1, ..., n - 1}, similar to std::iota.
Definition: ShapeUtil.cpp:224