Quantum GIS API Documentation
1.7.5-Wroclaw
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The raster shade function applies a shader to a pixel at render time - typically used to render grayscale images as false color. More...
#include <qgsrastershaderfunction.h>
Public Member Functions | |
QgsRasterShaderFunction (double theMinimumValue=0.0, double theMaximumValue=255.0) | |
virtual | ~QgsRasterShaderFunction () |
virtual void | setMaximumValue (double) |
Set the maximum value. More... | |
virtual void | setMinimumValue (double) |
Return the minimum value. More... | |
virtual bool | shade (double, int *, int *, int *) |
generates and new RGB value based on one input value More... | |
virtual bool | shade (double, double, double, int *, int *, int *) |
generates and new RGB value based on original RGB value More... | |
Protected Attributes | |
double | mMaximumValue |
User defineable maximum value for the shading function. More... | |
double | mMinimumValue |
User defineable minimum value for the shading function. More... | |
double | mMinimumMaximumRange |
Minimum maximum range for the shading function. More... | |
The raster shade function applies a shader to a pixel at render time - typically used to render grayscale images as false color.
Definition at line 27 of file qgsrastershaderfunction.h.
QgsRasterShaderFunction::QgsRasterShaderFunction | ( | double | theMinimumValue = 0.0 , |
double | theMaximumValue = 255.0 |
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Definition at line 22 of file qgsrastershaderfunction.cpp.
References mMaximumValue, mMinimumMaximumRange, mMinimumValue, and QgsDebugMsg.
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inlinevirtual |
Definition at line 32 of file qgsrastershaderfunction.h.
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virtual |
Set the maximum value.
Set the maximum value for the raster shader.
theValue | The new maximum value |
Reimplemented in QgsFreakOutShader, and QgsPseudoColorShader.
Definition at line 36 of file qgsrastershaderfunction.cpp.
References mMaximumValue, mMinimumMaximumRange, mMinimumValue, and QgsDebugMsg.
Referenced by QgsRasterShader::setMaximumValue().
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virtual |
Return the minimum value.
Set the maximum value for the raster shader.
theValue | The new minimum value |
Reimplemented in QgsFreakOutShader, and QgsPseudoColorShader.
Definition at line 49 of file qgsrastershaderfunction.cpp.
References mMaximumValue, mMinimumMaximumRange, mMinimumValue, and QgsDebugMsg.
Referenced by QgsRasterShader::setMinimumValue().
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virtual |
generates and new RGB value based on one input value
Generates and new RGB value based on one input value.
theValue | The original value to base a new RGB value on |
theReturnRedValue | The red component of the new RGB value |
theReturnGreenValue | The green component of the new RGB value |
theReturnBlueValue | The blue component of the new RGB value |
Reimplemented in QgsColorRampShader, QgsFreakOutShader, and QgsPseudoColorShader.
Definition at line 66 of file qgsrastershaderfunction.cpp.
Referenced by QgsRasterShader::shade().
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virtual |
generates and new RGB value based on original RGB value
Generates and new RGB value based on an original RGB value.
theRedValue | The red component of the original value to base a new RGB value on |
theGreenValue | The green component of the original value to base a new RGB value on |
theBlueValue | The blue component of the original value to base a new RGB value on |
theReturnRedValue | The red component of the new RGB value |
theReturnGreenValue | The green component of the new RGB value |
theReturnBlueValue | The blue component of the new RGB value |
Reimplemented in QgsColorRampShader, QgsFreakOutShader, and QgsPseudoColorShader.
Definition at line 87 of file qgsrastershaderfunction.cpp.
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protected |
User defineable maximum value for the shading function.
Definition at line 48 of file qgsrastershaderfunction.h.
Referenced by QgsRasterShaderFunction(), setMaximumValue(), QgsPseudoColorShader::setMaximumValue(), QgsFreakOutShader::setMaximumValue(), setMinimumValue(), QgsFreakOutShader::setMinimumValue(), QgsPseudoColorShader::setMinimumValue(), QgsPseudoColorShader::shade(), and QgsFreakOutShader::shade().
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protected |
Minimum maximum range for the shading function.
Definition at line 54 of file qgsrastershaderfunction.h.
Referenced by QgsRasterShaderFunction(), QgsFreakOutShader::setClassBreaks(), QgsPseudoColorShader::setClassBreaks(), setMaximumValue(), QgsFreakOutShader::setMaximumValue(), QgsPseudoColorShader::setMaximumValue(), setMinimumValue(), QgsPseudoColorShader::setMinimumValue(), QgsFreakOutShader::setMinimumValue(), QgsPseudoColorShader::shade(), and QgsFreakOutShader::shade().
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protected |
User defineable minimum value for the shading function.
Definition at line 51 of file qgsrastershaderfunction.h.
Referenced by QgsRasterShaderFunction(), QgsFreakOutShader::setClassBreaks(), QgsPseudoColorShader::setClassBreaks(), setMaximumValue(), QgsFreakOutShader::setMaximumValue(), QgsPseudoColorShader::setMaximumValue(), setMinimumValue(), QgsPseudoColorShader::setMinimumValue(), QgsFreakOutShader::setMinimumValue(), QgsPseudoColorShader::shade(), and QgsFreakOutShader::shade().