Can someone help me with C++ headers for after effects Plugins?
Can someone help me understand this piece of the plugin header
* BTW it is used in the SDK of AE 2015 *.
He began to make sense and then I just lost myself
==============================================
Enum {}
PORTABLE_INPUT = 0, / / default input layer
PORTABLE_SLIDER,
PORTABLE_NUM_PARAMS
};
Enum {}
PORTABLE_DISK_ID = 1
};
typedef struct {}
A_FpShort slider_value;
} PortableRenderInfo;
#define PORTABLE_MIN 0.0
#define PORTABLE_MAX 200.0
#define PORTABLE_BIG_MAX 200.0
#define PORTABLE_DFLT 10.0
#define SLIDER_PRECISION 1
#define DISPLAY_FLAGS PF_ValueDisplayFlag_PERCENT
extern "C" {}
This code snippet is just defining some constants that get used later, whether it's a macro (#define) or within an enum. It allows you to easily change the value (of, say, PORTABLE_MAX) in one place, rather that at each place, it is used. It is always advisable to define some constants naked symbolism rather than as numbers. Assuming that the name of the symbol is right, that this help really make the code more readable.
Typedef struct defines a structure that can be recorded and transmitted between the functions.
It's pretty basic C, not even using all the C++ features. Search on Google for '#define c' or 'c enum' or anything that will lead you to the tutorials explain these things in (probably too much) in detail.
Bob Currier
Tags: After Effects
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