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 # rocky\_sph\_interaction\_api

 Last update: 17.07.2025 

<a id="l00001" name="l00001"></a> 1\#pragma once

<a id="l00002" name="l00002"></a> 2 

<a id="l00003" name="l00003"></a> 3// Includes =======================================================================================

<a id="l00004" name="l00004"></a> 4\#include "rocky\_sph\_element\_api.hpp"

<a id="l00005" name="l00005"></a> 5\#include "rocky\_sph\_interaction.hpp"

<a id="l00006" name="l00006"></a> 6\#include &lt;rocky20/api/rocky\_boundary\_api.hpp&gt;

<a id="l00007" name="l00007"></a> 7 

<a id="l00008" name="l00008"></a> 8// ================================================================================================

<a id="l00009" name="l00009"></a> 9// IRockySPHElementInteraction

<a id="l00010" name="l00010"></a> 10// ================================================================================================

<a id="l00011" name="l00011"></a> 11 

<a id="l00017" name="l00017"></a>[ 17](structIRockySPHElementInteraction.xhtml)struct [IRockySPHElementInteraction](structIRockySPHElementInteraction.xhtml)

<a id="l00018" name="l00018"></a> 18{

<a id="l00022" name="l00022"></a> 22 ROCKY_FUNCTIONS float3 [calculate\_elements\_distance](structIRockySPHElementInteraction.xhtml#a72569f88c7d9a22615a3287ab7df33db)() const;

<a id="l00023" name="l00023"></a> 23 

<a id="l00027" name="l00027"></a> 27 ROCKY_FUNCTIONS float3 [calculate\_elements\_relative\_velocity](structIRockySPHElementInteraction.xhtml#a14f9867d6104ce395f3a1d48a03fd9c8)() const;

<a id="l00028" name="l00028"></a> 28 

<a id="l00032" name="l00032"></a> 32 ROCKY_FUNCTIONS float3 [get\_home\_element\_velocity](structIRockySPHElementInteraction.xhtml#acec345cb590d324b9729b8842b777906)() const;

<a id="l00033" name="l00033"></a> 33 

<a id="l00037" name="l00037"></a> 37 ROCKY_FUNCTIONS float3 [get\_near\_element\_velocity](structIRockySPHElementInteraction.xhtml#aa71223f8afaf50df1e511041157ba890)() const;

<a id="l00038" name="l00038"></a> 38 

<a id="l00043" name="l00043"></a> 43 ROCKY_FUNCTIONS [IRockySPHElement](structIRockySPHElement.xhtml) [get\_home\_element](structIRockySPHElementInteraction.xhtml#a7eb0236ba9b25b58b0ca258b1e79976b)() const;

<a id="l00044" name="l00044"></a> 44 

<a id="l00049" name="l00049"></a> 49 ROCKY_FUNCTIONS [IRockySPHElement](structIRockySPHElement.xhtml) [get\_near\_element](structIRockySPHElementInteraction.xhtml#a0e9d2687e1c8a66357730003f850fe26)() const;

<a id="l00050" name="l00050"></a> 50 

<a id="l00058" name="l00058"></a> 58 ROCKY_FUNCTIONS void [add\_force](structIRockySPHElementInteraction.xhtml#a1ee1b8234e2660a09b7b1a7fe3ba0e07)(float3 force);

<a id="l00059" name="l00059"></a> 59 

<a id="l00068" name="l00068"></a> 68 ROCKY_FUNCTIONS void [add\_acceleration](structIRockySPHElementInteraction.xhtml#a713381036ee74bb8476435037c14124b)(float3 acceleration);

<a id="l00069" name="l00069"></a> 69 

<a id="l00072" name="l00072"></a> 72 ROCKY_FUNCTIONS explicit [IRockySPHElementInteraction](structIRockySPHElementInteraction.xhtml)(

<a id="l00073" name="l00073"></a> 73 RockySPHElementInteraction* interaction_impl);

<a id="l00074" name="l00074"></a> 74 

<a id="l00075" name="l00075"></a> 75 RockySPHElementInteraction* _impl;

<a id="l00076" name="l00076"></a> 76 

<a id="l00078" name="l00078"></a> 78};



<a id="l00079" name="l00079"></a> 79 

<a id="l00080" name="l00080"></a> 80inline ROCKY_FUNCTIONS IRockySPHElementInteraction::IRockySPHElementInteraction(

<a id="l00081" name="l00081"></a> 81 RockySPHElementInteraction* interaction_impl)

<a id="l00082" name="l00082"></a> 82 : _impl(interaction_impl)

<a id="l00083" name="l00083"></a> 83{

<a id="l00084" name="l00084"></a> 84}

<a id="l00085" name="l00085"></a> 85 

<a id="l00086" name="l00086"></a>[ 86](structIRockySPHElementInteraction.xhtml#a72569f88c7d9a22615a3287ab7df33db)inline ROCKY_FUNCTIONS float3 [IRockySPHElementInteraction::calculate\_elements\_distance](structIRockySPHElementInteraction.xhtml#a72569f88c7d9a22615a3287ab7df33db)() const

<a id="l00087" name="l00087"></a> 87{

<a id="l00088" name="l00088"></a> 88 return this-&gt;_impl-&gt;get_distance_vector();

<a id="l00089" name="l00089"></a> 89}



<a id="l00090" name="l00090"></a> 90 

<a id="l00091" name="l00091"></a> 91inline ROCKY_FUNCTIONS float3

<a id="l00092" name="l00092"></a>[ 92](structIRockySPHElementInteraction.xhtml#a14f9867d6104ce395f3a1d48a03fd9c8)[IRockySPHElementInteraction::calculate\_elements\_relative\_velocity](structIRockySPHElementInteraction.xhtml#a14f9867d6104ce395f3a1d48a03fd9c8)() const

<a id="l00093" name="l00093"></a> 93{

<a id="l00094" name="l00094"></a> 94 return this-&gt;_impl-&gt;calculate_elements_relative_velocity();

<a id="l00095" name="l00095"></a> 95}



<a id="l00096" name="l00096"></a> 96 

<a id="l00097" name="l00097"></a>[ 97](structIRockySPHElementInteraction.xhtml#acec345cb590d324b9729b8842b777906)inline ROCKY_FUNCTIONS float3 [IRockySPHElementInteraction::get\_home\_element\_velocity](structIRockySPHElementInteraction.xhtml#acec345cb590d324b9729b8842b777906)() const

<a id="l00098" name="l00098"></a> 98{

<a id="l00099" name="l00099"></a> 99 return this-&gt;_impl-&gt;get_home_velocity();

<a id="l00100" name="l00100"></a> 100}



<a id="l00101" name="l00101"></a> 101 

<a id="l00102" name="l00102"></a>[ 102](structIRockySPHElementInteraction.xhtml#aa71223f8afaf50df1e511041157ba890)inline ROCKY_FUNCTIONS float3 [IRockySPHElementInteraction::get\_near\_element\_velocity](structIRockySPHElementInteraction.xhtml#aa71223f8afaf50df1e511041157ba890)() const

<a id="l00103" name="l00103"></a> 103{

<a id="l00104" name="l00104"></a> 104 return this-&gt;_impl-&gt;get_near_velocity();

<a id="l00105" name="l00105"></a> 105}



<a id="l00106" name="l00106"></a> 106 

<a id="l00107" name="l00107"></a>[ 107](structIRockySPHElementInteraction.xhtml#a7eb0236ba9b25b58b0ca258b1e79976b)inline ROCKY_FUNCTIONS [IRockySPHElement](structIRockySPHElement.xhtml) [IRockySPHElementInteraction::get\_home\_element](structIRockySPHElementInteraction.xhtml#a7eb0236ba9b25b58b0ca258b1e79976b)() const

<a id="l00108" name="l00108"></a> 108{

<a id="l00109" name="l00109"></a> 109 return [IRockySPHElement](structIRockySPHElement.xhtml) { this-&gt;_impl-&gt;get_home_element() };

<a id="l00110" name="l00110"></a> 110}



<a id="l00111" name="l00111"></a> 111 

<a id="l00112" name="l00112"></a>[ 112](structIRockySPHElementInteraction.xhtml#a0e9d2687e1c8a66357730003f850fe26)inline ROCKY_FUNCTIONS [IRockySPHElement](structIRockySPHElement.xhtml) [IRockySPHElementInteraction::get\_near\_element](structIRockySPHElementInteraction.xhtml#a0e9d2687e1c8a66357730003f850fe26)() const

<a id="l00113" name="l00113"></a> 113{

<a id="l00114" name="l00114"></a> 114 return [IRockySPHElement](structIRockySPHElement.xhtml) { this-&gt;_impl-&gt;get_near_element() };

<a id="l00115" name="l00115"></a> 115}



<a id="l00116" name="l00116"></a> 116 

<a id="l00117" name="l00117"></a>[ 117](structIRockySPHElementInteraction.xhtml#a1ee1b8234e2660a09b7b1a7fe3ba0e07)inline ROCKY_FUNCTIONS void [IRockySPHElementInteraction::add\_force](structIRockySPHElementInteraction.xhtml#a1ee1b8234e2660a09b7b1a7fe3ba0e07)(float3 force)

<a id="l00118" name="l00118"></a> 118{

<a id="l00119" name="l00119"></a> 119 this-&gt;_impl-&gt;[add\_force](structIRockySPHElement.xhtml#a127c628744bdfcaa28fb7cc692fd889c)(force);

<a id="l00120" name="l00120"></a> 120}



<a id="l00121" name="l00121"></a> 121 

<a id="l00122" name="l00122"></a>[ 122](structIRockySPHElementInteraction.xhtml#a713381036ee74bb8476435037c14124b)inline ROCKY_FUNCTIONS void [IRockySPHElementInteraction::add\_acceleration](structIRockySPHElementInteraction.xhtml#a713381036ee74bb8476435037c14124b)(float3 acceleration)

<a id="l00123" name="l00123"></a> 123{

<a id="l00124" name="l00124"></a> 124 this-&gt;_impl-&gt;add_acceleration(acceleration);

<a id="l00125" name="l00125"></a> 125}



<a id="l00126" name="l00126"></a> 126 

<a id="l00127" name="l00127"></a> 127// ================================================================================================

<a id="l00128" name="l00128"></a> 128// IRockySPHTriangleInteraction

<a id="l00129" name="l00129"></a> 129// ================================================================================================

<a id="l00130" name="l00130"></a> 130 

<a id="l00136" name="l00136"></a>[ 136](structIRockySPHTriangleInteraction.xhtml)struct [IRockySPHTriangleInteraction](structIRockySPHTriangleInteraction.xhtml)

<a id="l00137" name="l00137"></a> 137{

<a id="l00142" name="l00142"></a> 142 ROCKY_FUNCTIONS [IRockySPHElement](structIRockySPHElement.xhtml) [get\_home\_element](structIRockySPHTriangleInteraction.xhtml#ae83d8750e222b2a46e6f901fd20b80d5)() const;

<a id="l00143" name="l00143"></a> 143 

<a id="l00148" name="l00148"></a> 148 ROCKY_FUNCTIONS [IRockyGeometryTriangle](structIRockyGeometryTriangle.xhtml) [get\_near\_triangle](structIRockySPHTriangleInteraction.xhtml#a469b4ac53234c9e707fee62725b0470a)() const;

<a id="l00149" name="l00149"></a> 149 

<a id="l00154" name="l00154"></a> 154 ROCKY_FUNCTIONS float [calculate\_element\_triangle\_distance](structIRockySPHTriangleInteraction.xhtml#a6bfc347dab63cdbb89a8045f878ba16f)() const;

<a id="l00155" name="l00155"></a> 155 

<a id="l00160" name="l00160"></a> 160 ROCKY_FUNCTIONS float3 [get\_orthogonal\_projection](structIRockySPHTriangleInteraction.xhtml#a665a945d4045772b3a4759b76daf697b)() const;

<a id="l00161" name="l00161"></a> 161 

<a id="l00166" name="l00166"></a> 166 ROCKY_FUNCTIONS float3 [get\_unit\_vector](structIRockySPHTriangleInteraction.xhtml#a23aa813897c50610e3989dc625f1993a)() const;

<a id="l00167" name="l00167"></a> 167 

<a id="l00171" name="l00171"></a> 171 ROCKY_FUNCTIONS float3 [get\_home\_element\_velocity](structIRockySPHTriangleInteraction.xhtml#afc2786e2e46e3b025371c17290a88f45)() const;

<a id="l00172" name="l00172"></a> 172 

<a id="l00177" name="l00177"></a> 177 ROCKY_FUNCTIONS float3 [get\_boundary\_velocity](structIRockySPHTriangleInteraction.xhtml#ab240320819db1ece083e25b69f305e12)() const;

<a id="l00178" name="l00178"></a> 178 

<a id="l00183" name="l00183"></a> 183 ROCKY_FUNCTIONS real_sph [get\_normal\_relative\_velocity](structIRockySPHTriangleInteraction.xhtml#a9df83c2a83bd932798eba6a099398ce4)() const;

<a id="l00184" name="l00184"></a> 184 

<a id="l00189" name="l00189"></a> 189 ROCKY_FUNCTIONS real_sph [get\_tangential\_relative\_velocity](structIRockySPHTriangleInteraction.xhtml#a5ff11979743a9bd389afbc153b7124d9)() const;

<a id="l00190" name="l00190"></a> 190 

<a id="l00199" name="l00199"></a> 199 ROCKY_FUNCTIONS void [add\_force](structIRockySPHTriangleInteraction.xhtml#a749ae0224b1bd279d33404b3d0b84010)(float3 force);

<a id="l00200" name="l00200"></a> 200 

<a id="l00209" name="l00209"></a> 209 ROCKY_FUNCTIONS void [add\_acceleration](structIRockySPHTriangleInteraction.xhtml#a1578dfd6da083096eb169fe24913dd5b)(float3 acceleration);

<a id="l00210" name="l00210"></a> 210 

<a id="l00213" name="l00213"></a> 213 ROCKY_FUNCTIONS explicit [IRockySPHTriangleInteraction](structIRockySPHTriangleInteraction.xhtml)(

<a id="l00214" name="l00214"></a> 214 RockySPHTriangleInteraction* interaction_impl);

<a id="l00215" name="l00215"></a> 215 

<a id="l00216" name="l00216"></a> 216 RockySPHTriangleInteraction* _impl;

<a id="l00217" name="l00217"></a> 217 

<a id="l00218" name="l00218"></a> 218 [[deprecated]]

<a id="l00219" name="l00219"></a> 219 ROCKY_FUNCTIONS float3 get_distance_to_home_vector() const;

<a id="l00220" name="l00220"></a> 220 

<a id="l00221" name="l00221"></a> 221 [[deprecated("Use IRockySPHTriangleInteraction::get\_orthogonal\_projection() instead.")]]

<a id="l00222" name="l00222"></a> 222 ROCKY_FUNCTIONS float3 get_nearest_point_to_home() const;

<a id="l00223" name="l00223"></a> 223 

<a id="l00224" name="l00224"></a> 224 [[deprecated("Use IRockySPHTriangleInteraction::calculate\_element\_triangle\_distance() instead.")]]

<a id="l00225" name="l00225"></a> 225 ROCKY_FUNCTIONS float get_distance_to_home() const;

<a id="l00226" name="l00226"></a> 226 

<a id="l00228" name="l00228"></a> 228};



<a id="l00229" name="l00229"></a> 229 

<a id="l00230" name="l00230"></a> 230inline ROCKY_FUNCTIONS IRockySPHTriangleInteraction::IRockySPHTriangleInteraction(

<a id="l00231" name="l00231"></a> 231 RockySPHTriangleInteraction* interaction_impl)

<a id="l00232" name="l00232"></a> 232 : _impl(interaction_impl)

<a id="l00233" name="l00233"></a> 233{

<a id="l00234" name="l00234"></a> 234}

<a id="l00235" name="l00235"></a> 235 

<a id="l00236" name="l00236"></a>[ 236](structIRockySPHTriangleInteraction.xhtml#afc2786e2e46e3b025371c17290a88f45)inline ROCKY_FUNCTIONS float3 [IRockySPHTriangleInteraction::get\_home\_element\_velocity](structIRockySPHTriangleInteraction.xhtml#afc2786e2e46e3b025371c17290a88f45)() const

<a id="l00237" name="l00237"></a> 237{

<a id="l00238" name="l00238"></a> 238 return this-&gt;_impl-&gt;get_home_velocity();

<a id="l00239" name="l00239"></a> 239}



<a id="l00240" name="l00240"></a> 240 

<a id="l00241" name="l00241"></a>[ 241](structIRockySPHTriangleInteraction.xhtml#ae83d8750e222b2a46e6f901fd20b80d5)inline ROCKY_FUNCTIONS [IRockySPHElement](structIRockySPHElement.xhtml) [IRockySPHTriangleInteraction::get\_home\_element](structIRockySPHTriangleInteraction.xhtml#ae83d8750e222b2a46e6f901fd20b80d5)() const

<a id="l00242" name="l00242"></a> 242{

<a id="l00243" name="l00243"></a> 243 return [IRockySPHElement](structIRockySPHElement.xhtml) { this-&gt;_impl-&gt;get_home_element() };

<a id="l00244" name="l00244"></a> 244}



<a id="l00245" name="l00245"></a> 245 

<a id="l00246" name="l00246"></a>[ 246](structIRockySPHTriangleInteraction.xhtml#a749ae0224b1bd279d33404b3d0b84010)inline ROCKY_FUNCTIONS void [IRockySPHTriangleInteraction::add\_force](structIRockySPHTriangleInteraction.xhtml#a749ae0224b1bd279d33404b3d0b84010)(float3 force)

<a id="l00247" name="l00247"></a> 247{

<a id="l00248" name="l00248"></a> 248 this-&gt;_impl-&gt;[add\_force](structIRockySPHElement.xhtml#a127c628744bdfcaa28fb7cc692fd889c)(force);

<a id="l00249" name="l00249"></a> 249}



<a id="l00250" name="l00250"></a> 250 

<a id="l00251" name="l00251"></a>[ 251](structIRockySPHTriangleInteraction.xhtml#a1578dfd6da083096eb169fe24913dd5b)inline ROCKY_FUNCTIONS void [IRockySPHTriangleInteraction::add\_acceleration](structIRockySPHTriangleInteraction.xhtml#a1578dfd6da083096eb169fe24913dd5b)(float3 acceleration)

<a id="l00252" name="l00252"></a> 252{

<a id="l00253" name="l00253"></a> 253 this-&gt;_impl-&gt;add_acceleration(acceleration);

<a id="l00254" name="l00254"></a> 254}



<a id="l00255" name="l00255"></a> 255 

<a id="l00256" name="l00256"></a> 256inline ROCKY_FUNCTIONS [IRockyGeometryTriangle](structIRockyGeometryTriangle.xhtml)

<a id="l00257" name="l00257"></a>[ 257](structIRockySPHTriangleInteraction.xhtml#a469b4ac53234c9e707fee62725b0470a)[IRockySPHTriangleInteraction::get\_near\_triangle](structIRockySPHTriangleInteraction.xhtml#a469b4ac53234c9e707fee62725b0470a)() const

<a id="l00258" name="l00258"></a> 258{

<a id="l00259" name="l00259"></a> 259 return { this-&gt;_impl-&gt;near_index, this-&gt;_impl-&gt;rocky_model };

<a id="l00260" name="l00260"></a> 260}



<a id="l00261" name="l00261"></a> 261 

<a id="l00262" name="l00262"></a>[ 262](structIRockySPHTriangleInteraction.xhtml#a6bfc347dab63cdbb89a8045f878ba16f)inline ROCKY_FUNCTIONS float [IRockySPHTriangleInteraction::calculate\_element\_triangle\_distance](structIRockySPHTriangleInteraction.xhtml#a6bfc347dab63cdbb89a8045f878ba16f)() const

<a id="l00263" name="l00263"></a> 263{

<a id="l00264" name="l00264"></a> 264 return this-&gt;_impl-&gt;get_distance();

<a id="l00265" name="l00265"></a> 265}



<a id="l00266" name="l00266"></a> 266 

<a id="l00267" name="l00267"></a>[ 267](structIRockySPHTriangleInteraction.xhtml#a665a945d4045772b3a4759b76daf697b)inline ROCKY_FUNCTIONS float3 [IRockySPHTriangleInteraction::get\_orthogonal\_projection](structIRockySPHTriangleInteraction.xhtml#a665a945d4045772b3a4759b76daf697b)() const

<a id="l00268" name="l00268"></a> 268{

<a id="l00269" name="l00269"></a> 269 return this-&gt;_impl-&gt;get_nearest_point_to_home();

<a id="l00270" name="l00270"></a> 270}



<a id="l00271" name="l00271"></a> 271 

<a id="l00272" name="l00272"></a>[ 272](structIRockySPHTriangleInteraction.xhtml#ab240320819db1ece083e25b69f305e12)inline ROCKY_FUNCTIONS float3 [IRockySPHTriangleInteraction::get\_boundary\_velocity](structIRockySPHTriangleInteraction.xhtml#ab240320819db1ece083e25b69f305e12)() const

<a id="l00273" name="l00273"></a> 273{

<a id="l00274" name="l00274"></a> 274 return this-&gt;_impl-&gt;get_near_velocity();

<a id="l00275" name="l00275"></a> 275}



<a id="l00276" name="l00276"></a> 276 

<a id="l00277" name="l00277"></a>[ 277](structIRockySPHTriangleInteraction.xhtml#a23aa813897c50610e3989dc625f1993a)inline ROCKY_FUNCTIONS float3 [IRockySPHTriangleInteraction::get\_unit\_vector](structIRockySPHTriangleInteraction.xhtml#a23aa813897c50610e3989dc625f1993a)() const

<a id="l00278" name="l00278"></a> 278{

<a id="l00279" name="l00279"></a> 279 return this-&gt;_impl-&gt;get_unit_vector();

<a id="l00280" name="l00280"></a> 280}



<a id="l00281" name="l00281"></a> 281 

<a id="l00282" name="l00282"></a>[ 282](structIRockySPHTriangleInteraction.xhtml#a9df83c2a83bd932798eba6a099398ce4)inline ROCKY_FUNCTIONS real_sph [IRockySPHTriangleInteraction::get\_normal\_relative\_velocity](structIRockySPHTriangleInteraction.xhtml#a9df83c2a83bd932798eba6a099398ce4)() const

<a id="l00283" name="l00283"></a> 283{

<a id="l00284" name="l00284"></a> 284 return this-&gt;_impl-&gt;normal_velocity;

<a id="l00285" name="l00285"></a> 285}



<a id="l00286" name="l00286"></a> 286 

<a id="l00287" name="l00287"></a>[ 287](structIRockySPHTriangleInteraction.xhtml#a5ff11979743a9bd389afbc153b7124d9)inline ROCKY_FUNCTIONS real_sph [IRockySPHTriangleInteraction::get\_tangential\_relative\_velocity](structIRockySPHTriangleInteraction.xhtml#a5ff11979743a9bd389afbc153b7124d9)() const

<a id="l00288" name="l00288"></a> 288{

<a id="l00289" name="l00289"></a> 289 return this-&gt;_impl-&gt;tangential_velocity;

<a id="l00290" name="l00290"></a> 290}



<a id="l00291" name="l00291"></a> 291 

<a id="l00292" name="l00292"></a> 292// deprecated

<a id="l00293" name="l00293"></a> 293inline ROCKY_FUNCTIONS float3 IRockySPHTriangleInteraction::get_distance_to_home_vector() const

<a id="l00294" name="l00294"></a> 294{

<a id="l00295" name="l00295"></a> 295 return this-&gt;_impl-&gt;get_unit_vector() * this-&gt;_impl-&gt;get_distance();

<a id="l00296" name="l00296"></a> 296}

<a id="l00297" name="l00297"></a> 297 

<a id="l00298" name="l00298"></a> 298inline ROCKY_FUNCTIONS float IRockySPHTriangleInteraction::get_distance_to_home() const

<a id="l00299" name="l00299"></a> 299{

<a id="l00300" name="l00300"></a> 300 return this-&gt;_impl-&gt;get_distance();

<a id="l00301" name="l00301"></a> 301}

<a id="l00302" name="l00302"></a> 302 

<a id="l00303" name="l00303"></a> 303inline ROCKY_FUNCTIONS float3 IRockySPHTriangleInteraction::get_nearest_point_to_home() const

<a id="l00304" name="l00304"></a> 304{

<a id="l00305" name="l00305"></a> 305 return this-&gt;_impl-&gt;get_nearest_point_to_home();

<a id="l00306" name="l00306"></a> 306}

<a id="l00307" name="l00307"></a> 307 

[IRockyGeometryTriangle](structIRockyGeometryTriangle.xhtml)

**Definition** rocky_boundary_api.hpp:134



[IRockySPHElementInteraction](structIRockySPHElementInteraction.xhtml)

**Definition** rocky_sph_interaction_api.hpp:18



[IRockySPHElementInteraction::get\_near\_element](structIRockySPHElementInteraction.xhtml#a0e9d2687e1c8a66357730003f850fe26)

ROCKY_FUNCTIONS IRockySPHElement get_near_element() const

**Definition** rocky_sph_interaction_api.hpp:112



[IRockySPHElementInteraction::calculate\_elements\_relative\_velocity](structIRockySPHElementInteraction.xhtml#a14f9867d6104ce395f3a1d48a03fd9c8)

ROCKY_FUNCTIONS float3 calculate_elements_relative_velocity() const

**Definition** rocky_sph_interaction_api.hpp:92



[IRockySPHElementInteraction::add\_force](structIRockySPHElementInteraction.xhtml#a1ee1b8234e2660a09b7b1a7fe3ba0e07)

ROCKY_FUNCTIONS void add_force(float3 force)

**Definition** rocky_sph_interaction_api.hpp:117



[IRockySPHElementInteraction::add\_acceleration](structIRockySPHElementInteraction.xhtml#a713381036ee74bb8476435037c14124b)

ROCKY_FUNCTIONS void add_acceleration(float3 acceleration)

**Definition** rocky_sph_interaction_api.hpp:122



[IRockySPHElementInteraction::calculate\_elements\_distance](structIRockySPHElementInteraction.xhtml#a72569f88c7d9a22615a3287ab7df33db)

ROCKY_FUNCTIONS float3 calculate_elements_distance() const

**Definition** rocky_sph_interaction_api.hpp:86



[IRockySPHElementInteraction::get\_home\_element](structIRockySPHElementInteraction.xhtml#a7eb0236ba9b25b58b0ca258b1e79976b)

ROCKY_FUNCTIONS IRockySPHElement get_home_element() const

**Definition** rocky_sph_interaction_api.hpp:107



[IRockySPHElementInteraction::get\_near\_element\_velocity](structIRockySPHElementInteraction.xhtml#aa71223f8afaf50df1e511041157ba890)

ROCKY_FUNCTIONS float3 get_near_element_velocity() const

**Definition** rocky_sph_interaction_api.hpp:102



[IRockySPHElementInteraction::get\_home\_element\_velocity](structIRockySPHElementInteraction.xhtml#acec345cb590d324b9729b8842b777906)

ROCKY_FUNCTIONS float3 get_home_element_velocity() const

**Definition** rocky_sph_interaction_api.hpp:97



[IRockySPHElement](structIRockySPHElement.xhtml)

**Definition** rocky_sph_element_api.hpp:106



[IRockySPHElement::add\_force](structIRockySPHElement.xhtml#a127c628744bdfcaa28fb7cc692fd889c)

ROCKY_FUNCTIONS void add_force(const float3 &amp;force) const

**Definition** rocky_sph_element_api.hpp:135



[IRockySPHTriangleInteraction](structIRockySPHTriangleInteraction.xhtml)

**Definition** rocky_sph_interaction_api.hpp:137



[IRockySPHTriangleInteraction::add\_acceleration](structIRockySPHTriangleInteraction.xhtml#a1578dfd6da083096eb169fe24913dd5b)

ROCKY_FUNCTIONS void add_acceleration(float3 acceleration)

**Definition** rocky_sph_interaction_api.hpp:251



[IRockySPHTriangleInteraction::get\_unit\_vector](structIRockySPHTriangleInteraction.xhtml#a23aa813897c50610e3989dc625f1993a)

ROCKY_FUNCTIONS float3 get_unit_vector() const

**Definition** rocky_sph_interaction_api.hpp:277



[IRockySPHTriangleInteraction::get\_near\_triangle](structIRockySPHTriangleInteraction.xhtml#a469b4ac53234c9e707fee62725b0470a)

ROCKY_FUNCTIONS IRockyGeometryTriangle get_near_triangle() const

**Definition** rocky_sph_interaction_api.hpp:257



[IRockySPHTriangleInteraction::get\_tangential\_relative\_velocity](structIRockySPHTriangleInteraction.xhtml#a5ff11979743a9bd389afbc153b7124d9)

ROCKY_FUNCTIONS real_sph get_tangential_relative_velocity() const

**Definition** rocky_sph_interaction_api.hpp:287



[IRockySPHTriangleInteraction::get\_orthogonal\_projection](structIRockySPHTriangleInteraction.xhtml#a665a945d4045772b3a4759b76daf697b)

ROCKY_FUNCTIONS float3 get_orthogonal_projection() const

**Definition** rocky_sph_interaction_api.hpp:267



[IRockySPHTriangleInteraction::calculate\_element\_triangle\_distance](structIRockySPHTriangleInteraction.xhtml#a6bfc347dab63cdbb89a8045f878ba16f)

ROCKY_FUNCTIONS float calculate_element_triangle_distance() const

**Definition** rocky_sph_interaction_api.hpp:262



[IRockySPHTriangleInteraction::add\_force](structIRockySPHTriangleInteraction.xhtml#a749ae0224b1bd279d33404b3d0b84010)

ROCKY_FUNCTIONS void add_force(float3 force)

**Definition** rocky_sph_interaction_api.hpp:246



[IRockySPHTriangleInteraction::get\_normal\_relative\_velocity](structIRockySPHTriangleInteraction.xhtml#a9df83c2a83bd932798eba6a099398ce4)

ROCKY_FUNCTIONS real_sph get_normal_relative_velocity() const

**Definition** rocky_sph_interaction_api.hpp:282



[IRockySPHTriangleInteraction::get\_boundary\_velocity](structIRockySPHTriangleInteraction.xhtml#ab240320819db1ece083e25b69f305e12)

ROCKY_FUNCTIONS float3 get_boundary_velocity() const

**Definition** rocky_sph_interaction_api.hpp:272



[IRockySPHTriangleInteraction::get\_home\_element](structIRockySPHTriangleInteraction.xhtml#ae83d8750e222b2a46e6f901fd20b80d5)

ROCKY_FUNCTIONS IRockySPHElement get_home_element() const

**Definition** rocky_sph_interaction_api.hpp:241



[IRockySPHTriangleInteraction::get\_home\_element\_velocity](structIRockySPHTriangleInteraction.xhtml#afc2786e2e46e3b025371c17290a88f45)

ROCKY_FUNCTIONS float3 get_home_element_velocity() const

**Definition** rocky_sph_interaction_api.hpp:236