private string GetEdgeString(MLinearEdge edge, MObject obj)
{
string str = null;
string s1 = obj.GetPointIdentifier(edge.start);
string s2 = obj.GetPointIdentifier(edge.end);
if (s1 != null && s2 != null)
{
str = s1 + s2;
}
return(str);
}
private string GetFaceString(MFace face, MObject obj)
{
string hs = "";
string s;
switch (face.faceType)
{
case MFace.MFaceType.POLYGON:
hs += "平面";
MPolygonFace polyf = face as MPolygonFace;
foreach (MPoint p in polyf.sortedPoints)
{
s = obj.GetPointIdentifier(p);
if (s == null)
{
hs = null;
break;
}
hs += s;
}
break;
case MFace.MFaceType.CIRCLE:
hs += "圆";
MCircleFace cirf = face as MCircleFace;
s = obj.GetPointIdentifier(cirf.circle.center);
if (s == null)
{
hs = null;
break;
}
hs += s;
break;
default:
hs = null;
break;
}
return(hs);
}
private void UpdateText()
{
string text = "";
texts.Clear();
if (selectedEntity.Count == 2)
{
MRelation relation = GetEntityRelation(selectedEntity[0], selectedEntity[1]);
if (relation != null)
{
string ls, hs;
switch (relation.relationType)
{
case MRelation.EntityRelationType.POINT_POINT:
if (relation.shareObject)
{
MObject obj = relation.lowerEntity.obj;
ls = obj.GetPointIdentifier((MPoint)(relation.lowerEntity.entity));
hs = obj.GetPointIdentifier((MPoint)(relation.higherEntity.entity));
if (ls != null && hs != null)
{
text = ls + hs + " = " + relation.distance;
texts.Add(text);
}
else
{
text = "两点距离：" + relation.distance;
texts.Add(text);
}
}
break;
case MRelation.EntityRelationType.POINT_EDGE:
if (relation.shareObject)
{
MObject obj = relation.lowerEntity.obj;
ls = obj.GetPointIdentifier((MPoint)(relation.lowerEntity.entity));
hs = GetEdgeString(relation.higherEntity.entity as MLinearEdge, obj);
if (MHelperFunctions.FloatEqual(relation.distance, 0))
{
if (ls != null && hs != null)
{
text = ls + " ∈ " + hs;
texts.Add(text);
}
else
{
text = "点在直线上";
texts.Add(text);
}
}
else
{
if (ls != null && hs != null)
{
text = "Dis(" + ls + ", " + hs + ") = " + relation.distance;
texts.Add(text);
}
else
{
text = "点到直线距离： " + relation.distance;
texts.Add(text);
}
}
}
break;
case MRelation.EntityRelationType.POINT_FACE:
ls = null;
hs = null;
if (relation.shareObject)
{
MObject obj = relation.lowerEntity.obj;
ls = obj.GetPointIdentifier((MPoint)(relation.lowerEntity.entity));
hs = GetFaceString(relation.higherEntity.entity as MFace, obj);
if (MHelperFunctions.FloatEqual(relation.distance, 0))
{
if (ls != null && hs != null)
{
text = ls + " ∈ " + hs;
texts.Add(text);
}
else
{
text = "点在平面上";
texts.Add(text);
}
}
else
{
if (ls != null && hs != null)
{
text = "Dis(" + ls + ", " + hs + ") = " + relation.distance;
texts.Add(text);
}
else
{
text = "点到平面距离： " + relation.distance;
texts.Add(text);
}
}
}
break;
case MRelation.EntityRelationType.EDGE_EDGE:
hs = null;
ls = null;
if (relation.shareObject)
{
MObject obj = relation.lowerEntity.obj;
ls = GetEdgeString(relation.lowerEntity.entity as MLinearEdge, obj);
hs = GetEdgeString(relation.higherEntity.entity as MLinearEdge, obj);
}
if ((relation.shareObject && MHelperFunctions.FloatEqual(relation.distance, 0)) || MHelperFunctions.FloatEqual(relation.angle, 0))
{
if (ls != null && hs != null)
{
text = ls + "、" + hs + "共面";
texts.Add(text);
}
else
{
text = "两线共面";
texts.Add(text);
}
}
if (MHelperFunctions.FloatEqual(relation.angle, 0))
{
if (relation.shareObject && ls != null && hs != null)
{
text = ls + " // " + hs;
texts.Add(text);
}
else
{
text = "两线平行";
texts.Add(text);
}
}
else if (MHelperFunctions.FloatEqual(relation.angle, 90))
{
if (relation.shareObject && ls != null && hs != null)
{
text = ls + " ⊥ " + hs;
texts.Add(text);
}
else
{
text = "两线垂直";
texts.Add(text);
}
}
else
{
if (relation.shareObject && ls != null && hs != null)
{
text = ls + "、" + hs + "夹角： " + relation.angle;
texts.Add(text);
}
else
{
text = "两线夹角：" + relation.angle;
texts.Add(text);
}
}
if (relation.shareObject && !MHelperFunctions.FloatEqual(relation.distance, 0))
{
if (ls != null && hs != null)
{
text = "Dis(" + ls + ", " + hs + ") = " + relation.distance;
texts.Add(text);
}
else
{
text = "两线距离： " + relation.distance;
texts.Add(text);
}
}
break;
case MRelation.EntityRelationType.EDGE_FACE:
hs = null;
ls = null;
if (relation.shareObject)
{
MObject obj = relation.lowerEntity.obj;
ls = GetEdgeString(relation.lowerEntity.entity as MLinearEdge, obj);
hs = GetFaceString(relation.higherEntity.entity as MFace, obj);
}
if (relation.shareObject && MHelperFunctions.FloatEqual(relation.distance, 0))
{
if (ls != null && hs != null)
{
text = ls + " ⊂ " + hs;
texts.Add(text);
}
else
{
text = "线在面上";
texts.Add(text);
}
}
else if (relation.shareObject && MHelperFunctions.FloatEqual(relation.distance, -1))
{
if (ls != null && hs != null)
{
text = ls + "、" + hs + "相交";
texts.Add(text);
}
else
{
text = "线面相交";
texts.Add(text);
}
}
if (MHelperFunctions.FloatEqual(relation.angle, 0))
{
if (relation.shareObject && ls != null && hs != null)
{
text = ls + " // " + hs;
texts.Add(text);
}
else
{
text = "线面平行";
texts.Add(text);
}
if (relation.shareObject)
{
if (ls != null && hs != null)
{
text = "Dis(" + ls + ", " + hs + ") = " + relation.distance;
texts.Add(text);
}
else
{
text = "线面距离：" + relation.distance;
texts.Add(text);
}
}
}
else if (MHelperFunctions.FloatEqual(relation.angle, 90))
{
if (relation.shareObject && ls != null && hs != null)
{
text = ls + " ⊥ " + hs;
texts.Add(text);
}
else
{
text = "线面垂直";
texts.Add(text);
}
}
else
{
if (relation.shareObject && ls != null && hs != null)
{
text = ls + "、" + hs + "夹角： " + relation.angle;
texts.Add(text);
}
else
{
text = "线面夹角：" + relation.angle;
texts.Add(text);
}
}
break;
case MRelation.EntityRelationType.FACE_FACE:
hs = null;
ls = null;
if (relation.shareObject)
{
MObject obj = relation.lowerEntity.obj;
ls = GetFaceString(relation.lowerEntity.entity as MFace, obj);
hs = GetFaceString(relation.higherEntity.entity as MFace, obj);
}
if (MHelperFunctions.FloatEqual(relation.angle, 0))
{
if (relation.shareObject && ls != null && hs != null)
{
text = ls + " // " + hs;
texts.Add(text);
}
else
{
text = "面面平行";
texts.Add(text);
}
if (relation.shareObject)
{
if (ls != null && hs != null)
{
text = "Dis(" + ls + ", " + hs + ") = " + relation.distance;
texts.Add(text);
}
else
{
text = "面面距离：" + relation.distance;
texts.Add(text);
}
}
}
else if (MHelperFunctions.FloatEqual(relation.angle, 90))
{
if (relation.shareObject && ls != null && hs != null)
{
text = ls + " ⊥ " + hs;
texts.Add(text);
}
else
{
text = "面面垂直";
texts.Add(text);
}
}
else
{
if (relation.shareObject && ls != null && hs != null)
{
text = ls + "、" + hs + "夹角： " + relation.angle;
texts.Add(text);
}
else
{
text = "面面夹角：" + relation.angle;
texts.Add(text);
}
}
break;
}
}
}
UpdateTextMesh();
}