libs/math/expression.cpp

   1 /*
   2    Copyright (C) 2001-2006, William Joseph.
   3    All Rights Reserved.
   4
   5    This file is part of GtkRadiant.
   6
   7    GtkRadiant is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 2 of the License, or
  10    (at your option) any later version.
  11
  12    GtkRadiant is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with GtkRadiant; if not, write to the Free Software
  19    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  20  */
  21
  22 #include "expression.h"
  23
  24 Vector3 testAdded1( const Vector3& a, const Vector3& b ){
  25         return vector3_added( a, vector3_added( a, b ) );
  26 }
  27
  28 Vector3 testAdded2( const Vector3& a, const Vector3& b ){
  29         return vector3_for_expression( vector_added( vector3_identity( a ), vector_added( vector3_identity( a ), vector3_identity( b ) ) ) );
  30 }
  31
  32 Vector3 testMultiplied1( const Vector3& a, const Vector3& b ){
  33         return vector3_scaled( a, b );
  34 }
  35
  36 Vector3 testMultiplied2( const Vector3& a, const Vector3& b ){
  37         return vector3_for_expression( vector_multiplied( vector3_identity( a ), vector3_identity( b ) ) );
  38 }
  39
  40 Vector3 testCross1( const Vector3& a, const Vector3& b ){
  41         return vector3_cross( a, b );
  42 }
  43
  44 Vector3 testCross2( const Vector3& a, const Vector3& b ){
  45         return vector3_for_expression( vector_cross( vector3_identity( a ), vector3_identity( b ) ) );
  46 }
  47
  48 double testDot1( const Vector3& a, const Vector3& b ){
  49         return vector3_dot( a, b );
  50 }
  51
  52 double testDot2( const Vector3& a, const Vector3& b ){
  53         return float_for_expression( vector_dot( vector3_identity( a ), vector3_identity( b ) ) );
  54 }
  55
  56 double testLength1( const Vector3& a ){
  57         return vector3_length( a );
  58 }
  59
  60 double testLength2( const Vector3& a ){
  61         return float_for_expression( vector_length( vector3_identity( a ) ) );
  62 }
  63
  64 Vector3 testNormalised1( const Vector3& a ){
  65         return vector3_normalised( a );
  66 }
  67
  68 Vector3 testNormalised2( const Vector3& a ){
  69         return vector3_for_expression( vector_normalised( vector3_identity( a ) ) );
  70 }
  71
  72 Vector3 testNegated1( const Vector3& a ){
  73         return vector3_negated( a );
  74 }
  75
  76 Vector3 testNegated2( const Vector3& a ){
  77         return vector3_for_expression( vector_negated( vector3_identity( a ) ) );
  78 }
  79
  80 Vector3 testScaled1( const Vector3& a, const double& b ){
  81         return vector3_scaled( a, b );
  82 }
  83
  84 Vector3 testScaled2( const Vector3& a, const double& b ){
  85         return vector3_for_expression( vector_scaled( vector3_identity( a ), float_literal( b ) ) );
  86 }
  87
  88 Vector3 testMatrixMultiplied1( const Vector3& a, const Matrix4& b ){
  89         return matrix4_transformed_point( b, vector3_added( a, Vector3( 1, 0, 0 ) ) );
  90 }
  91
  92 Vector3 testMatrixMultiplied2( const Vector3& a, const Matrix4& b ){
  93         return vector3_for_expression(
  94                            point_multiplied(
  95                                    vector_added(
  96                                            vector3_identity( a ),
  97                                            vector3_literal( Vector3( 1, 0, 0 ) )
  98                                            ),
  99                                    matrix4_identity( b )
 100                                    )
 101                            );
 102 }
 103
 104 Matrix4 testMatrix4Multiplied1( const Matrix4& a, const Matrix4& b ){
 105         return matrix4_multiplied_by_matrix4( a, matrix4_multiplied_by_matrix4( a, b ) );
 106 }
 107
 108 Matrix4 testMatrix4Multiplied2( const Matrix4& a, const Matrix4& b ){
 109         return matrix4_for_expression(
 110                            matrix4_multiplied(
 111                                    matrix4_identity( a ),
 112                                    matrix4_identity( b )
 113                                    )
 114                            );
 115 }
 116
 117 Matrix4 testMatrix4AffineMultiplied1( const Matrix4& a, const Matrix4& b ){
 118         return matrix4_affine_multiplied_by_matrix4( a, b );
 119 }
 120
 121 Matrix4 testMatrix4AffineMultiplied2( const Matrix4& a, const Matrix4& b ){
 122         return matrix4_affine_for_expression(
 123                            matrix4_multiplied(
 124                                    matrix4_identity( a ),
 125                                    matrix4_identity( b )
 126                                    )
 127                            );
 128 }
 129
 130 Matrix4 testMatrix4MultipliedConstant1( const Matrix4& a ){
 131         return matrix4_multiplied_by_matrix4( a, g_matrix4_identity );
 132 }
 133
 134 Matrix4 testMatrix4MultipliedConstant2( const Matrix4& a ){
 135         return matrix4_for_expression(
 136                            matrix4_multiplied(
 137                                    matrix4_identity( a ),
 138                                    matrix4_identity( g_matrix4_identity )
 139                                    )
 140                            );
 141 }
 142 Matrix4 testMatrix4Transposed1( const Matrix4& a ){
 143         return matrix4_transposed( a );
 144 }
 145
 146 Matrix4 testMatrix4Transposed2( const Matrix4& a ){
 147         return matrix4_for_expression( matrix_transposed( matrix4_identity( a ) ) );
 148 }
 149
 150 Vector3 testMulti1( const Matrix4& a, const Vector3& b, const Vector3& c ){
 151         return vector3_added( matrix4_transformed_point( matrix4_transposed( a ), b ), c );
 152 }
 153
 154 Vector3 testMulti2( const Matrix4& a, const Vector3& b, const Vector3& c ){
 155         return vector3_for_expression(
 156                            vector_added(
 157                                    point_multiplied(
 158                                            vector3_identity( b ),
 159                                            matrix_transposed( matrix4_identity( a ) )
 160                                            ),
 161                                    vector3_identity( c )
 162                                    )
 163                            );
 164 }
 165
 166 template<typename Value, typename First, typename Second>
 167 class TestBinaryFunction
 168 {
 169 typedef Value ( *Function )( const First&, const Second& );
 170 Function m_function;
 171 public:
 172
 173 TestBinaryFunction( Function function ) : m_function( function ){
 174 }
 175 Value run( const First& first, const Second& second ) const {
 176         return m_function( first, second );
 177 }
 178 };
 179
 180 template<typename Value, typename First>
 181 class TestUnaryFunction
 182 {
 183 typedef Value ( *Function )( const First& );
 184 Function m_function;
 185 public:
 186
 187 TestUnaryFunction( Function function ) : m_function( function ){
 188 }
 189 Value run( const First& first ) const {
 190         return m_function( first );
 191 }
 192 };
 193
 194 class TestAll
 195 {
 196 public:
 197 TestAll(){
 198         Vector3 result1 = TestBinaryFunction<Vector3, Vector3, Vector3>( testAdded1 ).run( Vector3( 0, 0, 0 ), Vector3( 1, 1, 1 ) );
 199         Vector3 result2 = TestBinaryFunction<Vector3, Vector3, Vector3>( testAdded2 ).run( Vector3( 0, 0, 0 ), Vector3( 1, 1, 1 ) );
 200         Vector3 result3 = TestBinaryFunction<Vector3, Vector3, Vector3>( testMultiplied1 ).run( Vector3( 1, 2, 3 ), Vector3( 2, 1, 0.5f ) );
 201         Vector3 result4 = TestBinaryFunction<Vector3, Vector3, Vector3>( testMultiplied2 ).run( Vector3( 1, 2, 3 ), Vector3( 2, 1, 0.5f ) );
 202         Vector3 result5 = TestBinaryFunction<Vector3, Vector3, double>( testScaled1 ).run( Vector3( 1, 2, 3 ), 2.0 );
 203         Vector3 result6 = TestBinaryFunction<Vector3, Vector3, double>( testScaled2 ).run( Vector3( 1, 2, 3 ), 2.0 );
 204         Vector3 result7 = TestBinaryFunction<Vector3, Vector3, Matrix4>( testMatrixMultiplied1 ).run( Vector3( 1, 2, 3 ), matrix4_rotation_for_x_degrees( 90 ) );
 205         Vector3 result8 = TestBinaryFunction<Vector3, Vector3, Matrix4>( testMatrixMultiplied2 ).run( Vector3( 1, 2, 3 ), matrix4_rotation_for_x_degrees( 90 ) );
 206         Vector3 result9 = TestUnaryFunction<Vector3, Vector3>( testNormalised1 ).run( Vector3( 1, 2, 3 ) );
 207         Vector3 result10 = TestUnaryFunction<Vector3, Vector3>( testNormalised2 ).run( Vector3( 1, 2, 3 ) );
 208 }
 209 } g_testAll;