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Specular Lighting filter. More...
#include <ilviews/bitmaps/filters/lighting.h>
Public Member Functions | |
| IlvSpecularLightingFilter (IlFloat surfaceScale=1.0, IlFloat specularConstant=1.0, IlFloat specularExponent=1.0, IlvLightSource *light=0) | |
| Constructor. More... | |
| ~IlvSpecularLightingFilter () | |
| Destructor. More... | |
| IlvBitmapData * | apply (IlUInt count=0, const IlvBitmapData **inputs=0) |
| IlFloat | getSpecularConstant () const |
| Returns the specular constant. More... | |
| IlFloat | getSpecularExponent () const |
| Returns the specular exponent. More... | |
| void | setSpecularConstant (IlFloat specularConstant) |
| Sets the specular constant value. More... | |
| void | setSpecularExponent (IlFloat specularExponent) |
| Sets the specular exponent value. More... | |
 Public Member Functions inherited from IlvLightingFilter | |
| IlvLightingFilter (IlFloat surfaceScale=1.0, IlvLightSource *light=0) | |
| Constructor. More... | |
| virtual | ~IlvLightingFilter () |
| Destructor. More... | |
| IlFloat * | computeBumpMap (const IlvRGBBitmapData *src, IlFloat scaleX, IlFloat scaleY) |
| Computes the bump map for the given image. More... | |
| IlvLightSource * | getLightSource () const |
| Returns the light source. More... | |
| IlFloat | getSurfaceScale () const |
| Returns the surface scale. More... | |
| void | setLightSource (IlvLightSource *light) |
| void | setSurfaceScale (IlFloat scale) |
| Sets the surface scale. More... | |
| Public Member Functions inherited from IlvBitmapFilter | |
| IlvBitmapFilter () | |
| Constructor. More... | |
| virtual | ~IlvBitmapFilter () |
| Destructor. More... | |
| IlvBitmapData * | applyUnary (const IlvBitmapData *data) |
| Convenience method for unary filters. More... | |
| virtual const char * | getClassName () const |
| Returns the class name of the filter. More... | |
| IlUInt | getHeight () const |
| Returns the height of the filter effect region. More... | |
| const char *const * | getInputs (IlUInt &count) const |
| Returns the name of the input bitmap data. More... | |
| const char * | getName () const |
| Returns the name of the filter. More... | |
| IlUInt | getRefCount () const |
| Returns the reference count for this instance. | |
| const char * | getResult () const |
| Returns the name of the result bitmap data. More... | |
| IlUInt | getWidth () const |
| Returns the width of the filter effect region. More... | |
| IlInt | getX () const |
| Returns the left coordinate of the filter effect region. More... | |
| IlInt | getY () const |
| Returns the top coordinate of the filter effect region. More... | |
| void | lock () |
| Locks the current instance. | |
| void | setHeight (IlUInt height) |
| Sets the height of the filter effect region. More... | |
| void | setInputs (IlUInt count, const char *const *name) |
| Sets the input names of the filter. More... | |
| void | setName (const char *id) |
| Sets the name of the filter. More... | |
| void | setResult (const char *name) |
| Sets the result name of the filter. More... | |
| void | setWidth (IlUInt width) |
| Sets the width of the filter effect region. More... | |
| void | setX (IlInt x) |
| Sets the left coordinate of the filter effect region. More... | |
| void | setY (IlInt y) |
| Sets the top coordinate of the filter effect region. More... | |
| void | unLock () |
Unlocks the current instance. When the reference count is 0, the instance is deleted. | |
Additional Inherited Members | |
| Static Public Member Functions inherited from IlvBitmapFilter | |
| static IlvBitmapFilter * | Create (const char *classname, IlBoolean forceLoad=IlTrue) |
This static method creates an instance of a bitmap filter of given classname. If the filter class is not registered and forceLoad is IlTrue, an attempt to load a dynamic module for this filter is made. More... | |
| static const char ** | GetRegisteredFilters (IlUInt &num) |
| This static method returns an array of registered filter class names. More... | |
Specular Lighting filter.
Library: ilvbmpflt
This class allows you to light an image using a specular lighting model. The alpha channel of the source image is used as the bump map.
The resulting image is computed as follows: Sr = ks * pow(N.H, specularExponent) * Lr Sg = ks * pow(N.H, specularExponent) * Lg Sb = ks * pow(N.H, specularExponent) * Lb Sa = Max(Sr, Sg, Sb) where ks = specular lighting constant. N = surface normal unit vector, a function of x and y. H = unit vector pointing from surface to light, a function of x and y in the point and spot light cases. Lr, Lg, Lb = RGB components of the light, a function of x and y in the spot light case. N is a function of x and y and depends on the surface gradient as follows: The surface described by the input alpha image A(x, y) is: Z(x, y) = surfaceScale * Ain(x, y)
See IlvDiffuseLightingFilter for a definition of N. Unlike IlvDiffuseLightingFilter, IlvSpecularLightingFilter produces a non-opaque image.
| IlvSpecularLightingFilter::IlvSpecularLightingFilter | ( | IlFloat | surfaceScale = 1.0, |
| IlFloat | specularConstant = 1.0, |
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| IlFloat | specularExponent = 1.0, |
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| IlvLightSource * | light = 0 |
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| ) |
Constructor.
Initializes a new instance of the class IlvSpecularLightingFilter.
The default surface scale is 1.0. The default specular constant is 1.0. The default specular exponent is 1.0.
| IlvSpecularLightingFilter::~IlvSpecularLightingFilter | ( | ) |
Destructor.
The destructor releases all the memory used by the instance.
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virtual |
Applies the specular lighting to the given image.
Reimplemented from IlvBitmapFilter.
| IlFloat IlvSpecularLightingFilter::getSpecularConstant | ( | ) | const |
Returns the specular constant.
| IlFloat IlvSpecularLightingFilter::getSpecularExponent | ( | ) | const |
Returns the specular exponent.
| void IlvSpecularLightingFilter::setSpecularConstant | ( | IlFloat | specularConstant | ) |
Sets the specular constant value.
| specularConstant | The new specular constant. |
| void IlvSpecularLightingFilter::setSpecularExponent | ( | IlFloat | specularExponent | ) |
Sets the specular exponent value.
| specularExponent | The new specular exponent. |
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