src/python/PyImath/PyImathVec4ArrayImpl.h

   1 //
   2 // SPDX-License-Identifier: BSD-3-Clause
   3 // Copyright Contributors to the OpenEXR Project.
   4 //
   5
   6 // clang-format off
   7
   8 #ifndef _PyImathVec4ArrayImpl_h_
   9 #define _PyImathVec4ArrayImpl_h_
  10
  11 //
  12 // This .C file was turned into a header file so that instantiations
  13 // of the various V4* types can be spread across multiple files in
  14 // order to work around MSVC limitations.
  15 //
  16
  17 #include <Python.h>
  18 #define BOOST_BIND_GLOBAL_PLACEHOLDERS
  19 #include <boost/python.hpp>
  20 #include <boost/python/make_constructor.hpp>
  21 #include <boost/format.hpp>
  22 #include <ImathVec.h>
  23 #include <ImathVecAlgo.h>
  24 #include "PyImath.h"
  25 #include "PyImathVec.h"
  26 #include "PyImathDecorators.h"
  27 #include "PyImathMathExc.h"
  28 #include "PyImathOperators.h"
  29 #include "PyImathVecOperators.h"
  30
  31 namespace PyImath {
  32 using namespace boost::python;
  33 using namespace IMATH_NAMESPACE;
  34
  35 // XXX fixme - template this
  36 // really this should get generated automatically...
  37
  38 template <class T,int index>
  39 static FixedArray<T>
  40 Vec4Array_get(FixedArray<IMATH_NAMESPACE::Vec4<T> > &va)
  41 {
  42     return FixedArray<T>(&(va.unchecked_index(0)[index]),
  43                          va.len(), 4*va.stride(), va.handle(), va.writable());
  44 }
  45
  46 template <class T>
  47 static void
  48 setItemTuple(FixedArray<IMATH_NAMESPACE::Vec4<T> > &va, Py_ssize_t index, const tuple &t)
  49 {
  50     if(t.attr("__len__")() == 4)
  51     {
  52         Vec4<T> v;
  53         v.x = extract<T>(t[0]);
  54         v.y = extract<T>(t[1]);
  55         v.z = extract<T>(t[2]);
  56         v.w = extract<T>(t[3]);
  57
  58         va[va.canonical_index(index)] = v;
  59     }
  60     else
  61       throw std::invalid_argument ("tuple of length 4 expected");
  62 }
  63
  64 template <class T>
  65 static IMATH_NAMESPACE::Vec4<T>
  66 Vec4Array_min(const FixedArray<IMATH_NAMESPACE::Vec4<T> > &a) {
  67     Vec4<T> tmp(Vec4<T>(0));
  68     size_t len = a.len();
  69     if (len > 0)
  70         tmp = a[0];
  71     for (size_t i=1; i < len; ++i)
  72     {
  73         if (a[i].x < tmp.x)
  74             tmp.x = a[i].x;
  75         if (a[i].y < tmp.y)
  76             tmp.y = a[i].y;
  77         if (a[i].z < tmp.z)
  78             tmp.z = a[i].z;
  79         if (a[i].w < tmp.w)
  80             tmp.w = a[i].w;
  81     }
  82     return tmp;
  83 }
  84
  85 template <class T>
  86 static IMATH_NAMESPACE::Vec4<T>
  87 Vec4Array_max(const FixedArray<IMATH_NAMESPACE::Vec4<T> > &a)
  88 {
  89     Vec4<T> tmp(Vec4<T>(0));
  90     size_t len = a.len();
  91     if (len > 0)
  92         tmp = a[0];
  93     for (size_t i=1; i < len; ++i)
  94     {
  95         if (a[i].x > tmp.x)
  96             tmp.x = a[i].x;
  97         if (a[i].y > tmp.y)
  98             tmp.y = a[i].y;
  99         if (a[i].z > tmp.z)
 100             tmp.z = a[i].z;
 101         if (a[i].w > tmp.w)
 102             tmp.w = a[i].w;
 103     }
 104     return tmp;
 105 }
 106
 107
 108 // Trick to register methods for float-only-based vectors
 109 template <class T, IMATH_ENABLE_IF(!std::is_integral<T>::value)>
 110 void register_Vec4Array_floatonly(class_<FixedArray<Vec4<T>>>& vec4Array_class)
 111 {
 112     generate_member_bindings<op_vecLength<IMATH_NAMESPACE::Vec4<T> >     >(vec4Array_class,"length","");
 113     generate_member_bindings<op_vecNormalize<IMATH_NAMESPACE::Vec4<T> >  >(vec4Array_class,"normalize","");
 114     generate_member_bindings<op_vecNormalized<IMATH_NAMESPACE::Vec4<T> > >(vec4Array_class,"normalized","");
 115     generate_member_bindings<op_vecNormalizeExc<IMATH_NAMESPACE::Vec4<T> >  >(vec4Array_class,"normalizeExc","");
 116     generate_member_bindings<op_vecNormalizedExc<IMATH_NAMESPACE::Vec4<T> > >(vec4Array_class,"normalizedExc","");
 117 }
 118
 119 template <class T, IMATH_ENABLE_IF(std::is_integral<T>::value)>
 120 void register_Vec4Array_floatonly(class_<FixedArray<Vec4<T>>>& vec4Array_class)
 121 {
 122 }
 123
 124
 125
 126 template <class T>
 127 class_<FixedArray<IMATH_NAMESPACE::Vec4<T> > >
 128 register_Vec4Array()
 129 {
 130     using boost::mpl::true_;
 131
 132     class_<FixedArray<IMATH_NAMESPACE::Vec4<T> > > vec4Array_class = FixedArray<IMATH_NAMESPACE::Vec4<T> >::register_("Fixed length array of IMATH_NAMESPACE::Vec4");
 133     vec4Array_class
 134         .add_property("x",&Vec4Array_get<T,0>)
 135         .add_property("y",&Vec4Array_get<T,1>)
 136         .add_property("z",&Vec4Array_get<T,2>)
 137         .add_property("w",&Vec4Array_get<T,3>)
 138         .def("__setitem__", &setItemTuple<T>)
 139         .def("min", &Vec4Array_min<T>)
 140         .def("max", &Vec4Array_max<T>)
 141         ;
 142
 143     add_arithmetic_math_functions(vec4Array_class);
 144     add_comparison_functions(vec4Array_class);
 145
 146     register_Vec4Array_floatonly(vec4Array_class);
 147     generate_member_bindings<op_vecLength2<IMATH_NAMESPACE::Vec4<T> >    >(vec4Array_class,"length2","");
 148     generate_member_bindings<op_vecDot<IMATH_NAMESPACE::Vec4<T> >,true_>(vec4Array_class,"dot","return the inner product of (self,x)",boost::python::args("x"));
 149     generate_member_bindings<op_mul<IMATH_NAMESPACE::Vec4<T>,T>,  true_>(vec4Array_class,"__mul__" ,"self*x", boost::python::args("x"));
 150     generate_member_bindings<op_mul<IMATH_NAMESPACE::Vec4<T>,T>,  true_>(vec4Array_class,"__rmul__","x*self", boost::python::args("x"));
 151     generate_member_bindings<op_imul<IMATH_NAMESPACE::Vec4<T>,T>, true_>(vec4Array_class,"__imul__","self*=x",boost::python::args("x"));
 152     generate_member_bindings<op_div<IMATH_NAMESPACE::Vec4<T>,T>,  true_>(vec4Array_class,"__div__" ,"self/x", boost::python::args("x"));
 153     generate_member_bindings<op_div<IMATH_NAMESPACE::Vec4<T>,T>,  true_>(vec4Array_class,"__truediv__" ,"self/x", boost::python::args("x"));
 154     generate_member_bindings<op_idiv<IMATH_NAMESPACE::Vec4<T>,T>, true_>(vec4Array_class,"__idiv__","self/=x",boost::python::args("x"));
 155     generate_member_bindings<op_idiv<IMATH_NAMESPACE::Vec4<T>,T>, true_>(vec4Array_class,"__itruediv__","self/=x",boost::python::args("x"));
 156
 157     decoratecopy(vec4Array_class);
 158
 159     return vec4Array_class;
 160 }
 161
 162
 163 }  // namespace PyImath
 164
 165 #endif   // _PyImathVec4ArrayImpl_h_