1 files changed, 178 insertions, 0 deletions
diff --git a/curve_tools/util.py b/curve_tools/util.py
new file mode 100644
index 00000000..30596697
--- /dev/null
+++ b/curve_tools/util.py
@@ -0,0 +1,178 @@
+import bpy
+from mathutils import *
+
+
+def GetSelectedCurves():
+    rvList = []
+
+    for obj in bpy.context.selected_objects:
+        try:
+            if obj.type == "CURVE": rvList.append(obj)
+        except:
+            pass
+
+    return rvList
+    
+    
+def GetSelectedMeshes():
+    rvList = []
+
+    for obj in bpy.context.selected_objects:
+        try:
+            if obj.type == "MESH": rvList.append(obj)
+        except:
+            pass
+
+    return rvList
+
+
+def Selected1Curve():
+    try:
+        if len(GetSelectedCurves()) == 1:
+            return (bpy.context.active_object.type == "CURVE")
+    except:
+        pass
+
+    return False
+
+
+def Selected1Mesh():
+    try:
+        if len(GetSelectedMeshes()) == 1:
+            return (bpy.context.active_object.type == "MESH")
+    except:
+        pass
+
+    return False
+
+
+def Selected1SingleSplineCurve():
+    try:
+        if Selected1Curve():
+            return (len(bpy.context.active_object.data.splines) == 1)
+    except:
+        pass
+
+    return False
+
+
+def Selected2Curves():
+    try:
+        if len(GetSelectedCurves()) == 2:
+            return (bpy.context.active_object.type == "CURVE")
+    except:
+        pass
+
+    return False
+
+
+def Selected3Curves():
+    try:
+        if len(GetSelectedCurves()) == 3:
+            return (bpy.context.active_object.type == "CURVE")
+    except:
+        pass
+
+    return False
+
+
+def Selected1OrMoreCurves():
+    try:
+        if len(GetSelectedCurves()) > 0:
+            return (bpy.context.active_object.type == "CURVE")
+    except:
+        pass
+
+    return False
+    
+def Selected2OrMoreCurves():
+    try:
+        if len(GetSelectedCurves()) > 1:
+            return (bpy.context.active_object.type == "CURVE")
+    except:
+        pass
+
+    return False
+
+
+def Selected1OrMoreMesh():
+    try:
+        if len(GetSelectedMeshes()) > 0:
+            return (bpy.context.active_object.type == "MESH")
+    except:
+        pass
+
+    return False
+
+
+def GetToolsRegion():
+    for area in bpy.context.screen.areas:
+        if area.type == 'VIEW_3D':
+            for region in area.regions:
+                if region.type == 'TOOLS': return region
+
+    return None
+
+
+def GetFirstRegionView3D():
+    for area in bpy.context.screen.areas:
+        if area.type == 'VIEW_3D':
+            return area.spaces[0].region_3d
+
+    return None
+
+
+def LogFirstRegionView3D():
+    print("LogFirstRegionView3D()")
+    regionView3D = GetFirstRegionView3D()
+    if regionView3D is None:
+        print("--", "ERROR:", "regionView3D is None")
+        return
+
+    print("--", "view_matrix:")
+    print("--", "--", regionView3D.view_matrix)
+    print("--", "view_location:")
+    print("--", "--", regionView3D.view_location)
+
+
+class Intersection:
+    # listIP: list of BezierSplineIntersectionPoint
+    # return: list of splines
+    @staticmethod
+    def GetBezierSplines(listIP):
+        rvList = []
+
+        for ip in listIP:
+            if not (ip.spline in rvList): rvList.append(ip.spline)
+
+        return rvList
+
+
+    # listIP: list of BezierSplineIntersectionPoint
+    # return: list of segments
+    @staticmethod
+    def GetBezierSegments(listIP, spline):
+        rvList = []
+
+        for ip in listIP:
+            if not ip.spline is spline: continue
+
+            segIP = ip.bezierSegmentIntersectionPoint
+            if not (segIP.segment in rvList): rvList.append(segIP.segment)
+
+        return rvList
+
+
+    # listIP: list of BezierSplineIntersectionPoint
+    # return: list of floats (not necessarily ordered)
+    @staticmethod
+    def GetBezierSegmentParameters(listIP, segment):
+        rvList = []
+
+        for ip in listIP:
+            segIP = ip.bezierSegmentIntersectionPoint
+            if not segIP.segment is segment: continue
+
+            rvList.append(segIP.parameter)
+
+        return rvList