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);