VTK  9.1.0
vtkViewDependentErrorMetric.h
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1 /*=========================================================================
2 
3  Program: Visualization Toolkit
4  Module: vtkViewDependentErrorMetric.h
5 
6  Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
7  All rights reserved.
8  See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
9 
10  This software is distributed WITHOUT ANY WARRANTY; without even
11  the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
12  PURPOSE. See the above copyright notice for more information.
13 
14 =========================================================================*/
29 #ifndef vtkViewDependentErrorMetric_h
30 #define vtkViewDependentErrorMetric_h
31 
33 #include "vtkRenderingCoreModule.h" // For export macro
34 
35 class vtkViewport;
36 class vtkCoordinate;
37 
38 class VTKRENDERINGCORE_EXPORT vtkViewDependentErrorMetric : public vtkGenericSubdivisionErrorMetric
39 {
40 public:
46 
48 
52  void PrintSelf(ostream& os, vtkIndent indent) override;
54 
56 
65  vtkGetMacro(PixelTolerance, double);
67 
76  void SetPixelTolerance(double value);
77 
79 
83  vtkGetObjectMacro(Viewport, vtkViewport);
84  void SetViewport(vtkViewport* viewport);
86 
107  double* leftPoint, double* midPoint, double* rightPoint, double alpha) override;
108 
122  double GetError(double* leftPoint, double* midPoint, double* rightPoint, double alpha) override;
123 
124 protected:
127 
133  double Distance2LinePoint(double x[2], double y[2], double z[2]);
134 
137  // used to get display coordinates from world coordinates
139 
140 private:
142  void operator=(const vtkViewDependentErrorMetric&) = delete;
143 };
144 
145 #endif
perform coordinate transformation, and represent position, in a variety of vtk coordinate systems
Definition: vtkCoordinate.h:77
Objects that compute error during cell tessellation.
a simple class to control print indentation
Definition: vtkIndent.h:34
Objects that compute a screen-based error during cell tessellation.
static vtkViewDependentErrorMetric * New()
Construct the error metric with a default squared screen-based geometric accuracy measured in pixels ...
double GetError(double *leftPoint, double *midPoint, double *rightPoint, double alpha) override
Return the error at the mid-point.
void SetPixelTolerance(double value)
Set the squared screen-based geometric accuracy measured in pixels.
int RequiresEdgeSubdivision(double *leftPoint, double *midPoint, double *rightPoint, double alpha) override
Does the edge need to be subdivided according to the distance between the line passing through its en...
~vtkViewDependentErrorMetric() override
void PrintSelf(ostream &os, vtkIndent indent) override
Standard VTK type and error macros.
void SetViewport(vtkViewport *viewport)
Set/Get the renderer with ‘renderer’ on which the error metric is based.
double Distance2LinePoint(double x[2], double y[2], double z[2])
Square distance between a straight line (defined by points x and y) and a point z.
abstract specification for Viewports
Definition: vtkViewport.h:47
@ value
Definition: vtkX3D.h:226
@ alpha
Definition: vtkX3D.h:256