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D2D1_DISTANTDIFFUSE_PROP enumeration (d2d1effects.h)

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Identifiers for properties of the Distant-diffuse lighting effect.

Syntax

typedef enum D2D1_DISTANTDIFFUSE_PROP {
  D2D1_DISTANTDIFFUSE_PROP_AZIMUTH = 0,
  D2D1_DISTANTDIFFUSE_PROP_ELEVATION = 1,
  D2D1_DISTANTDIFFUSE_PROP_DIFFUSE_CONSTANT = 2,
  D2D1_DISTANTDIFFUSE_PROP_SURFACE_SCALE = 3,
  D2D1_DISTANTDIFFUSE_PROP_COLOR = 4,
  D2D1_DISTANTDIFFUSE_PROP_KERNEL_UNIT_LENGTH = 5,
  D2D1_DISTANTDIFFUSE_PROP_SCALE_MODE = 6,
  D2D1_DISTANTDIFFUSE_PROP_FORCE_DWORD = 0xffffffff
} ;

Constants

 
D2D1_DISTANTDIFFUSE_PROP_AZIMUTH
Value: 0
The direction angle of the light source in the XY plane relative to the X-axis in the counter clock wise direction. The units are in degrees and must be between 0 and 360 degrees.


The type is FLOAT.

The default value is 0.0f.
D2D1_DISTANTDIFFUSE_PROP_ELEVATION
Value: 1
The direction angle of the light source in the YZ plane relative to the Y-axis in the counter clock wise direction. The units are in degrees and must be between 0 and 360 degrees.


The type is FLOAT.

The default value is 0.0f.
D2D1_DISTANTDIFFUSE_PROP_DIFFUSE_CONSTANT
Value: 2
The ratio of diffuse reflection to amount of incoming light. This property must be between 0 and 10,000 and is unitless.


The type is FLOAT.

The default value is 1.0f.
D2D1_DISTANTDIFFUSE_PROP_SURFACE_SCALE
Value: 3
The scale factor in the Z direction. The surface scale is unitless and must be between 0 and 10,000.


The type is FLOAT.

The default value is 1.0f.
D2D1_DISTANTDIFFUSE_PROP_COLOR
Value: 4
The color of the incoming light. This property is exposed as a D2D1_VECTOR_3F – (R, G, B) and used to compute LR, LG, LB.


The type is D2D1_VECTOR_3F.

The default value is {1.0f, 1.0f, 1.0f}.
D2D1_DISTANTDIFFUSE_PROP_KERNEL_UNIT_LENGTH
Value: 5
The size of an element in the Sobel kernel used to generate the surface normal in the X and Y direction. This property maps to the dx and dy values in the Sobel gradient. This property is a D2D1_VECTOR_2F (Kernel Unit Length X, Kernel Unit Length Y) and is defined in (device-independent pixels (DIPs)/Kernel Unit). The effect uses bilinear interpolation to scale the bitmap to match size of kernel elements.


The type is D2D1_VECTOR_2F.

The default value is {1.0f, 1.0f}.
D2D1_DISTANTDIFFUSE_PROP_SCALE_MODE
Value: 6
The interpolation mode the effect uses to scale the image to the corresponding kernel unit length. There are six scale modes that range in quality and speed.


The type is D2D1_DISTANTDIFFUSE_SCALE_MODE.

The default value is D2D1_DISTANTDIFFUSE_SCALE_MODE_LINEAR.
D2D1_DISTANTDIFFUSE_PROP_FORCE_DWORD
Value: 0xffffffff

Requirements

Requirement Value
Header d2d1effects.h