Houdini18 HDK Offline Test
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cmake_minimum_required(VERSION 3.5) project(Triangle) set(CMAKE_CXX_STANDARD 11) set(CMAKE_CXX_STANDARD_REQUIRED ON) # OPENGL find_package(OpenGL REQUIRED) include_directories(${OpenGL_INCLUDE_DIRS}) link_directories(${OpenGL_LIBRARY_DIRS}) add_definitions(${OpenGL_DEFINITIONS}) if(NOT OPENGL_FOUND) message(ERROR " OPENGL not found!") endif(NOT OPENGL_FOUND) # GLEW set(GLEW_HOME D:/plugin_dev/libs/glew-2.1.0) include_directories(${GLEW_HOME}/include) link_directories(${GLEW_HOME}/lib/Release/x64) # GLFW set(GLFW_HOME D:/plugin_dev/libs/glfw-3.3.1.bin.WIN64) include_directories(${GLFW_HOME}/include/) link_directories(${GLFW_HOME}/lib-vc2019) # STB include_directories(D:/plugin_dev/libs/stb) # GLM include_directories(D:/plugin_dev/libs/GLM_include) # ---------------- HOUDINI if (MSVC) # Prevent Boost auto-linking. add_definitions(-DBOOST_ALL_NO_LIB ) add_definitions(-D_SCL_SECURE_NO_WARNINGS -D_CRT_SECURE_NO_WARNINGS -D_WIN32 -D_WINSOCK_DEPRECATED_NO_WARNINGS -D__x86_64__) # HOUDINI : add_definitions(-TP -Zc:forScope -DVERSION="18.0.348" -DI386 -DWIN32 -DSWAP_BITFIELDS -DWINVER=0x0501 -DNOMINMAX -DSTRICT -DWIN32_LEAN_AND_MEAN -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_DEPRECATE -D_CRT_NONSTDC_NO_DEPRECATE -D_SCL_SECURE_NO_WARNINGS -DSESI_LITTLE_ENDIAN -DHBOOST_ALL_NO_LIB -DEIGEN_MALLOC_ALREADY_ALIGNED=0 -DFBX_ENABLED=1 -DOPENCL_ENABLED=1 -DOPENVDB_ENABLED=1 -MD -EHsc -GR -DNEED_SPECIALIZATION_STORAGE -DAMD64 -DSIZEOF_VOID_P=8) endif() set(HOUDINI_HOME "D:/Program Files/Side Effects Software/Houdini 18.0.348") include_directories("${HOUDINI_HOME}/toolkit/include") link_directories("${HOUDINI_HOME}/custom/houdini/dsolib") # output excutable dir set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_SOURCE_DIR}/build) # SRC FILE FILE( GLOB SRC *.cpp *.h ) add_executable(Triangle ${SRC}) target_link_libraries(Triangle PRIVATE libGA.lib libGU.lib libUT.lib libCE.lib libLM.lib libFS.lib libSYS.lib libGEO.lib )
HDK Geometry Struct:
Houdini Geometry responsed to this figure:
1, get GLDraw info from this code:
#include <GU/GU_Detail.h> #include <GEO/GEO_Primitive.h> #include <GEO/GEO_PrimPoly.h> #include <GA/GA_Primitive.h> #include <GA/GA_Iterator.h> #include <iostream> using namespace std; int main(){ GU_Detail gdp; gdp.load("geos/box.bgeo"); cout << "Numpoints:"<<gdp.getNumPoints() <<endl; cout << "NumVerticles" << gdp.getNumVertices() << endl; cout << "NumFace:" << gdp.getNumPrimitives() << endl; // LOOP All face, cout this vertex count GEO_Primitive *geoPrim; GA_FOR_ALL_PRIMITIVES(&gdp,geoPrim){ int faceCount = geoPrim->getVertexCount() ;// per face have 3 point } cout << "------------------ Iterator Face ID & Per face point ID, this can used GL_DRAW_ELMENTS()---------------- "; GA_Iterator primIter(gdp.getPrimitiveRange()); fpreal start_primtive_num = *primIter; cout << "START primtive num:" << start_primtive_num << endl; // loop the face(prim) for (;!primIter.atEnd();++primIter) { GA_Primitive *prim = gdp.getPrimitive(*primIter); // iterator face points cout <<"this face id :" << *primIter <<"->have vertex count:" <<prim->getVertexCount() << endl; GA_Iterator pointIter(prim->getPointRange()); for(;!pointIter.atEnd();++pointIter){ cout <<"share point id:" <<*pointIter << endl; } } cout << "------------------ access points Iterator directly not opengl draw indcices---------------- "; // Loop the point, direct access the point , not prim vertex shared point GA_Iterator pointIter(gdp.getPointRange()); while(!pointIter.atEnd()){ int pointNum = *pointIter ; GA_Index pointIndex = gdp.pointIndex(*pointIter); GA_Offset pointOffset = gdp.pointOffset(pointIndex); cout <<"Lookup -> Point id:" <<*pointIter << " Point Index:" << pointIndex << " Point offset:" << pointOffset << endl; GA_OffsetArray orry; gdp.getVerticesReferencingPoint(orry,pointOffset); cout <<"And this point have "<< orry.size() << " verticles, and the vertex number:" ; for(auto &of: orry){ cout << of << " "; } cout << endl; ++pointIter; } cin.get(); return 0; }
The GA_Primitive class is a base class, GEO manipulate 3d Geometry further .
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