Open Inventor写操作SoWriteAction

最新推荐文章于 2022-11-15 17:28:07 发布

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本文介绍如何使用Inventor的SoDB、SoWriteAction等API实现3D模型的序列化过程，包括节点操作、内存分配与释放等关键步骤。

#include <Inventor/SoDB.h> #include <Inventor/actions/SoWriteAction.h> #include <Inventor/nodes/SoCone.h> #include <Inventor/nodes/SoSeparator.h> static char * buffer; static size_t buffer_size = 0; static void * buffer_realloc(void * bufptr, size_t size) { buffer = (char *)realloc(bufptr, size); buffer_size = size; return buffer; } static SbString buffer_writeaction(SoNode * root) { SoOutput out; buffer = (char *)malloc(1024); buffer_size = 1024; out.setBuffer(buffer, buffer_size, buffer_realloc); SoWriteAction wa(&out); wa.apply(root); SbString s(buffer); free(buffer); return s; } int main(int argc, char ** argv) { SoDB::init(); SoSeparator * root = new SoSeparator; root->ref(); root->addChild(new SoCone); SbString s = buffer_writeaction(root); (void)fprintf(stdout, "%s/n", s.getString()); root->unref(); return 0; }