Basic Measurements

Table of Contents

• Bounding Box
• Surface Area
• Volume
• Centroid
• Distance
• Angle

MTK allows to compute some key properties of a 3D model:

• bounding box;
• surface area;
• volume;
• centroid (center of mass).

Each property can be computed either for an entire ModelData.Model or for any ModelData.Assembly , ModelData.Part , and ModelData.Instance .

Bounding Box

Bounding box is the smallest axis-aligned box that fully contains a 3D model (or its component).

The following example demonstrates computation of a shape bounding box:

ModelData.Shape aShape = ...;
ModelData.Box aBox = new ModelData.Box();
Geom.Transformation aTrsf = new Geom.Transformation();
Measurements.BoundingBox.Compute(aShape, aTrsf, aBox);

In addition to traditional bounding boxes, Manufacturing Toolkit also allows to compute minimum bounding box which is not necessarily axis-aligned:

ModelData.Shape aShape = ...;
ModelData.Box aBox = new ModelData.Box();
Geom.Transformation aTrsf = new Geom.Transformation();
Measurements.BoundingBox.ComputeMin(aShape, aBox, aTrsf);

Surface Area

The following example demonstrates computation of a shape surface area:

ModelData_Shape aShape = ...;
double r = Measurements.SurfaceArea.Compute(aShape);

Volume

The following example demonstrates computation of a shape volume:

ModelData.Shape aShape = ...;
double r = Measurements.Volume.Compute(aShape);

Centroid

The following example demonstrates computation of a shape centroid (center of mass) :

ModelData.Shape aShape = ...;
Geom.Point aCentroid = Measurements.ValidationProperties.ComputeCentroid(aShape);

Distance

The following example demonstrates the computation of the distance between two shapes:

ModelData.Shape aFirstShape = ...;
ModelData.Shape aSecondShape = ...;
double aDistance = Measurements.Distance.Compute(aFirstShape, aSecondShape);

Angle

The following example demonstrates the computation of the angle between two planar faces:

ModelData.Face aFirstFace = ...;
ModelData.Face aSecondFace = ...;
double anAngle = Measurements.Angle.Compute(aFirstFace, aSecondFace);