shapeintended

Shapeintended is a term used in design, manufacturing, and computer graphics to denote the intended or target shape of an object as defined in its digital representation or design specification. It serves as a reference geometry against which deviations, distortions, or manufacturing tolerances are measured.

The concept emerges from the need to distinguish between the planned geometry and the realized geometry after fabrication, shading, or processing. In many workflows, shapeintended corresponds to the nominal model or CAD geometry, while the actual part's geometry is described as shapeactual or as-built. The distinction aids in tolerance analysis, quality control, and reverse engineering, allowing engineers to quantify deviations and assess conformance to specifications.

Applications span additive manufacturing, precision machining, computer-aided design, and computer graphics. In tolerance stacks and metrology, comparing the shapeintended to the measured shape enables the calculation of critical dimensions and deviation maps. In computer graphics, it may refer to the original mesh or control points before deformation.

Limitations include the fact that both shapeintended and actual shape can be subject to interpretation, depending on measurement methods, coordinate frames, and surface representations. Clear documentation of reference frames and measurement criteria is essential for meaningful comparison.

See also: CAD, tolerance analysis, metrology, shape optimization, as-built geometry.