Hoops 的使用

Hoops  的 Segment 的层次是一个树状的结构

"." 指当前打开的段

 

计算文字大小和坐标系转换的代码如下：

 

HC_KEY key = m_pHView->GetModelKey();float xfrac,yfrac;const char* testSegment = "text";HC_Open_Segment_By_Key(key);HC_Create_Segment(testSegment);//HC_Compute_Text_Extent (testSegment, "rabbit", &xfrac, &yfrac);HC_KEY keys[3];keys[0] = HC_KOpen_Segment(testSegment);keys[1] = m_pHView->GetIncludeLinkKey();keys[2] = m_pHView->GetViewKey();HC_Set_Text_Font("name = roman, size = 3.5 oru"); HC_Compute_Text_Extent_Enc_Path(3, keys, "mbs", "rabbitrabbitrabbitrabbitrabbitrabbit", &xfrac, &yfrac);//HC_Open_Segment(testSegment);HC_Close_Segment();HC_KEY sceneKey = m_pHView->GetSceneKey();HC_Open_Segment_By_Key(sceneKey);HPoint sPt(xfrac,yfrac,0.0);HPoint pt1;HC_Compute_Coordinates(".", "local window", &sPt, "world", &pt1);