SilverScreenAPI

TEXTURE_DATA

Structure

A primitive-level data type that stores the data associated with a SilverScreen line.

struct TEXTURE_DATA

{

USINT32 Flags; // Properties of texture

double Width; // Width (in inches) of texture map

double Height; // Height (in inches) of texture map

double Rotation; // Angle (degrees)to rotate texture before applying

};

Members

Member

Description

Flags

A bit flag that has the following values

Constant	Meaning
TEXTURE_MAP_SPHERE	Sphere-mapping is used to apply this texture
TEXTURE_MAP_CYLINDER	Cylinder-mapping is used to apply this texture
TEXTURE_MAP_PLANE	Plane-mapping is used to apply this texture
TEXTURE_MAP_BOX	Box-mapping is used to apply this texture

TEXTURE_MODE_REPLACE	The texture image will replace the pixels of the target geometry
TEXTURE_MODE_BLEND	The texture image will blend with the pixel color of the target geometry
TEXTURE_MODE_MODULATE	The texture image will mix with the pixel color and lighting of the target geometry

TEXTURE_FLAG_HORZFLIP	The texture will be flipped horizontally when it is applied
TEXTURE_FLAG_VERTFLIP	The texture will be flipped vertically when it is applied.
TEXTURE_FLAG_STRETCHTOFIT	The texture will stretch to fit the measured extents of the target geometry
TEXTURE_FLAG_IGNORE_ALPHA	If texture contains alpha data do not use it

Width

Width (in inches) of texture when it is applied

Height

Height (in inches) of texture when it is applied

Rotation

Angle (in degrees) to rotate the texture when it is applied.

Remarks

There are several macros that separates the 'Flags' field into groups, as well as one to extract the index. They are

Macro	Purpose
TEXTURE_INDEX	Extracts 0 if there is no texture associated with the 'Flags' field, otherwise it extracts the index into the texture table.
TEXTURE_MAP	Extracts the texture mapping (i.e. TEXTURE_MAP_BOX) from the 'Flags' field
TEXTURE_MODE	Extracts the texture mode (i.e. TEXTURE_MODE_MODULATE) from the 'Flags' field
TEXTURE_FLAGS	Extracts the texture flags (i.e. TEXTURE_FLAG_HORZFLIP) from the 'Flags' field
MAKE_TEXTURE_FLAG	Combines an index, texture mapping, texture mode, and any texture flags into a value appropriate for assignment to the 'Flags' field.

silver.h, ssnodes.h

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