Creo二次开发：默认坐标系创建（基于特征元素树）

二次开发创建坐标系常用的方法式调用UDF来创建，但是参数的 控制 比较单一。那么用特征元素树来做的话，就非常的容易控制各种参数了。

PRO_E_FEATURE_TREE

   |

   |–PRO_E_FEATURE_TYPE

   |

   |–PRO_E_STD_FEATURE_NAME

   |

   |–PRO_E_CSYS_ORIGIN_CONSTRS Array of origin constraints

   | |–PRO_E_CSYS_ORIGIN_CONSTR

   | |–PRO_E_CSYS_ORIGIN_CONSTR_REF

   |

   |–PRO_E_CSYS_OFFSET_TYPE

   |

   |–PRO_E_CSYS_ONSURF_TYPE

   |

   |–PRO_E_CSYS_DIM_CONSTRS

   | |–PRO_E_CSYS_DIM_CONSTR

   | |–PRO_E_CSYS_DIM_CONSTR_REF

   | |–PRO_E_CSYS_DIM_CONSTR_TYPE

   | |–PRO_E_CSYS_DIM_CONSTR_VAL

   |

   |–PRO_E_CSYS_ORIENTMOVES Array of orientation constraints

   | |–PRO_E_CSYS_ORIENTMOVE

   | |–PRO_E_CSYS_ORIENTMOVE_MOVE_TYPE

   | |–PRO_E_CSYS_ORIENTMOVE_MOVE_VAL

   |

   |–PRO_E_CSYS_NORMAL_TO_SCREEN

   |

   |–PRO_E_CSYS_ORIENT_BY_METHOD

   |

   |–PRO_E_CSYS_ORIENTSELAXIS1_REF Orientation direction 1 reference

   |–PRO_E_CSYS_ORIENTSELAXIS1_REF_OPT To use csys origin, x, y, or z axis

   |–PRO_E_CSYS_ORIENTSELAXIS1_OPT Axis option of direction 1 reference

   |–PRO_E_CSYS_ORIENTSELAXIS1_FLIP

   |–PRO_E_CSYS_ORIENTSELAXIS2_REF Orientation direction 2 reference

   |–PRO_E_CSYS_ORIENTSELAXIS2_REF_OPT To use csys origin, x, y, z or axis

   |–PRO_E_CSYS_ORIENTSELAXIS2_OPT Axis option of direction 2 reference

   |–PRO_E_CSYS_ORIENTSELAXIS2_FLIP

   |–PRO_E_CSYS_ORIENTSELAXIS2_ROT_OPT Rotation angle option about the First Axis

   |–PRO_E_CSYS_ORIENTSELAXIS2_ROT Rotation angle about the First Axis

   |

   |–PRO_E_CSYS_TYPE_MECH csys type in Creo Simulate environment ( ONLY )

   |–PRO_E_CSYS_FOLLOW_SRF_OPT csys follow option in sheetmetal environment ( ONLY )

   |

   |–PRO_E_CSYS_NAME_DISPLAY_OPT Csys name display option ( yes/no )

   |–PRO_E_CSYS_DISPLAY_ZOOM_DEP_OPT Csys display zoom dependent option ( yes/no )

   |–PRO_E_CSYS_AXIS_LENGTH Csys axis length

下面给出创建默认坐标系的代码实例：

wfcElements_ptr elements = wfcElements::create();

	wfcElement_ptr elem_0_0 = wfcElement::Create(wfcPRO_E_FEATURE_TREE, 0, 0);
	elements->append(elem_0_0);

	wfcElement_ptr elem_1_1 = wfcElement::Create(wfcPRO_E_FEATURE_TYPE, pfcCreateIntArgValue(PRO_FEAT_CSYS), 1);
	elements->append(elem_1_1);

	wfcElement_ptr elem_1_2 = wfcElement::Create(wfcPRO_E_STD_FEATURE_NAME, pfcCreateStringArgValue("CREOBOX"), 1);
	elements->append(elem_1_2);

	wfcElement_ptr elem_1_3 = wfcElement::Create(wfcPRO_E_CSYS_FOLLOW_SRF_OPT, pfcCreateIntArgValue(0), 1);
	elements->append(elem_1_3);


	wfcFeatCreateOptions_ptr featOpts = wfcFeatCreateOptions::create();
	featOpts->append(wfcFEAT_CR_INCOMPLETE_FEAT);
	wfcWRegenInstructions_ptr regenInstr = wfcWRegenInstructions::Create();



	wfcElementTree_ptr	elemTree = WSession->CreateElementTree(elements);
	wfcWFeature_ptr sweepFeat = wfcWSolid::cast(sld) ->WCreateFeature(elemTree, featOpts, regenInstr);

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