Visual3d_ViewMapping.hxx File Reference

#include <Standard.hxx>
#include <Standard_DefineAlloc.hxx>
#include <Standard_Macro.hxx>
#include <Graphic3d_Vertex.hxx>
#include <Visual3d_TypeOfProjection.hxx>
#include <Standard_Real.hxx>
#include <Handle_TColStd_HArray2OfReal.hxx>
#include <Standard_Boolean.hxx>

Data Structures
class	Visual3d_ViewMapping
	This class allows the definition of a projection and a system of coordinates called NPC. (Normalized Projection Coordinates). The projection can be parallel or perspective. References: The definitions are Phigs oriented. Keywords: View, Mapping, Window, View Plane, Front Plane, BackPlane, Projection Type, Reset, Projection Summary of 3D View Mapping – The view mapping transformation defines the – window-to-viewport mapping of View Reference – Coordinates (VRC) to Normalized Projection – Coordinates (NPC). – CAS.CADE supports two kinds of projection : – Parallel : – The Projection Reference Point (PRP) – determines the direction of projection. – Perspective : – The projector lines converge at the – Projection Reference Point (PRP). – To define a view mapping transformation you – must define : – The Projection Type – The Projection Reference Point (PRP) – The Distance from Back Plane (BPD) – The Distance from Front Plane (FPD) – The Distance from View Plane (VPD) – The Window in the View Plane. – More...