RadialWave Method

In This Topic

This method provides a radial wave effect on the current raster page.

Syntax

Visual Basic
C#
Managed Extensions for C++
C++/CLI

'Declaration
 
Public Shared Sub RadialWave( _
   ByVal page As ImGearRasterPage, _
   ByVal center As ImGearPoint, _
   ByVal amplitude As Single, _
   ByVal frequency As Single, _
   ByVal phase As Single, _
   ByVal attenuation As Single, _
   ByVal interpolate As Boolean, _
   ByVal color As ImGearPixel _
)

'Usage
 
Dim page As ImGearRasterPage
Dim center As ImGearPoint
Dim amplitude As Single
Dim frequency As Single
Dim phase As Single
Dim attenuation As Single
Dim interpolate As Boolean
Dim color As ImGearPixel
 
ImGearEffects.RadialWave(page, center, amplitude, frequency, phase, attenuation, interpolate, color)

public static void RadialWave( 
   ImGearRasterPage page,
   ImGearPoint center,
   float amplitude,
   float frequency,
   float phase,
   float attenuation,
   bool interpolate,
   ImGearPixel color
)

public: static void RadialWave( 
   ImGearRasterPage* page,
   ImGearPoint center,
   float amplitude,
   float frequency,
   float phase,
   float attenuation,
   bool interpolate,
   ImGearPixel* color
)

public:
static void RadialWave( 
   ImGearRasterPage^ page,
   ImGearPoint center,
   float amplitude,
   float frequency,
   float phase,
   float attenuation,
   bool interpolate,
   ImGearPixel^ color
)

Parameters

page: Page specified.
center: Center of the wave effect.
amplitude: Wave amplitude. Measurement units - pixel / 100.
frequency: Wave frequency. The frequency is defined as 1 / T, where T is a wave period in pixels.
phase: Wave phase, in radians.
attenuation: Wave attenuation. The attenuation factor of the wave is calculated as exp(-attenuation * r), where r is a distance from the wave center to the current wave point.
interpolate: If this parameter is true then an interpolation is used during processing.
color: ImageGear.Core.ImGearPixel class color.

Example

C#
Visual Basic

// Distorts an image with a radial wave.

// Center point of the wave, set to center of image.
ImGearPoint igPoint = new ImGearPoint();
igPoint.X = igRasterPage.DIB.Width / 2;
igPoint.Y = igRasterPage.DIB.Height / 2;

// Warp the image with a radial wave with an amplitude of 0.25, frequency of 20 pixels,
//  0 phase, and slight attenuation. Interpolation is enabled, and no fill color is specified.
ImGearEffects.RadialWave(
        igRasterPage, igPoint, (float)(0.25), (float)(1.0 / 20.0),
        (float)(0.0), (float)(0.01), true, null);

' Distorts an image with a radial wave.

     ' Center point of the wave, set to center of image.
     Dim igPoint As New ImGearPoint()
     igPoint.X = igRasterPage.DIB.Width / 2
     igPoint.Y = igRasterPage.DIB.Height / 2

     ' Warp the image with a radial wave with an amplitude of 0.25, frequency of 20 pixels,
     '  0 phase, and slight attenuation. Interpolation is enabled, and no fill color is specified.
     ImGearEffects.RadialWave(igRasterPage, igPoint, CSng((0.25)), CSng((1 / 20)), CSng((0)), CSng((0.01)), _
True, Nothing)

Reference

ImGearEffects Class
ImGearEffects Members
ImGearRasterPage Class
ImGearPoint Structure
ImGearPixel Class

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