Measurements

Table of Contents

• Overview
• Bounding Box
• Surface Area
• Volume
• Centroid

Overview

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 an axis-aligned bounding box which encompasses a 3D model (or its component).

The following example demonstrates computation of a shape bounding box:

ModelData::Shape aShape = ...;
ModelData::Box aBox;
Geom::Transformation aTrsf;
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;
Geom::Transformation aTrsf;
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);