NAME
vtkTextureMapToCylinder - generate texture coordinates by mapping points to cylinder
SYNOPSIS
#include "/opt/vtk-c++/graphics/vtkTextureMapToCylinder.h"
class VTK_EXPORT vtkTextureMapToCylinder : public vtkDataSetToDataSetFilter
vtkTextureMapToCylinder();
static vtkTextureMapToCylinder *New() {return new vtkTextureMapToCylinder;};
const char *GetClassName() {return "vtkTextureMapToCylinder";};
void PrintSelf(ostream& os, vtkIndent indent);
void SetPoint1(float, float, float);
void SetPoint1(float *);
float *GetPoint1();
void GetPoint1(float data[3]);
void SetPoint2(float, float, float);
void SetPoint2(float *);
float *GetPoint2();
void GetPoint2(float data[3]);
void SetAutomaticCylinderGeneration(int);
int GetAutomaticCylinderGeneration();
void AutomaticCylinderGenerationOn();
void AutomaticCylinderGenerationOff();
void SetPreventSeam(int);
int GetPreventSeam();
void PreventSeamOn();
void PreventSeamOff();
DESCRIPTION
vtkTextureMapToCylinder is a filter that generates 2D texture coordinates by mapping input dataset points onto a cylinder. The cylinder can either be user specified or generated automatically. (The cylinder is generated automatically by computing the axis of the cylinder.) Note that the generated texture coordinates for the s-coordinate ranges from (0-1) (corresponding to angle of 0->360 around axis), while the mapping of the t-coordinate is controlled by the projection of points along the axis.
To specify a cylinder manually, you must provide two points that define the axis of the cylinder. The length of the axis will affect the t-coordinates.
A special ivar controls how the s-coordinate is generated. If PreventSeam is set to true, the s-texture varies from 0>1 and then 1->0 (corresponding to angles of 0->180 and 180->360).
vtkTextureMapToBox vtkTransformTexture vtkThresholdTextureCoords
SUMMARY
void SetPoint1(float, float, float)
void SetPoint1(float *)
Specify the first point defining the cylinder axis,
void SetPoint2(float, float, float)
void SetPoint2(float *)
Specify the second point defining the cylinder axis,
void SetAutomaticCylinderGeneration(int)
Turn on/off automatic cylinder generation. This means it automatically finds the cylinder center and axis.
void SetPreventSeam(int)
Control how the texture coordinates are generated. If PreventSeam is set, the s-coordinate ranges from 0->1 and 1->0 corresponding to the angle variation from 0>180 and 180->0. Otherwise, the s-ccordinate ranges from 0->1 from 0->360 degrees.
vtkTextureMapToCylinder()
Create object with cylinder axis parallel to z-axis (points (0,0,-0.5) and (0,0,0.5)). The PreventSeam ivar is set to true. The cylinder is automatically generated.