BasetypesIndexed

NOTE: The contents of this structure have been intentionally left out of the interface, by the designers of this module. Think of this as a handle only.

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typedef struct geMesh_Def geMesh_Def;

NOTE: The contents of this structure have been intentionally left out of the interface, by the designers of this module. Think of this as a handle only.

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typedef struct geMesh geMesh;

NOTE: The contents of this structure have been intentionally left out of the interface, by the designers of this module. Think of this as a handle only.

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geBoolean

typedef signed int geBoolean;
#define GE_FALSE (0)
#define GE_TRUE (1)

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geFloat

typedef float geFloat;

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#ifndef NULL
#define NULL ((void *)0)
#endif

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typedef signed long int32;

typedef signed short int16;

typedef signed char int8 ;

typedef unsigned long uint32;

typedef unsigned short uint16;

typedef unsigned char uint8;

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#define GENESISCC _fastcall

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#define GENESISAPI _declspec(dllexport) [or] _declspec(dllimport) [or] <nothing>

Note: If a function does not have this in its declaration, then it will not be available in precompiled libarary files.

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GE_RGBA;

typedef struct {
float r, g, b, a; //note: in Genesis3D v1.6 this is of type geFloat
} GE_RGBA;

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GE_Rect;

typedef struct {
    int32 Left;
    int32 Right;
    int32 Top;
    int32 Bottom;
} GE_Rect;

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geRect

typedef GE_Rect geRect;

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geFloatRect;

typedef struct {
geFloat MinX,MaxX;
geFloat MinY,MaxY;
} geFloatRect;

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GE_LVertex;

typedef struct {
    float X, Y, Z;         // 3d vertex //note: for Genesis3D v1.6 this is of type geFloat
    float u, v;              // Uv's //note: for Genesis3D v1.6 this is of type geFloat
    float r, g, b, a;       // color //note: for Genesis3D v1.6 this is of type geFloat
} GE_LVertex;

This structure stores a Lit Vertex.
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GE_TLVertex

typedef struct {
    float x, y, z;            // screen points //note: for Genesis3D v1.6 this is of type geFloat
    float u, v;               // Uv's //note: for Genesis3D v1.6 this is of type geFloat
    float r, g, b, a;        // color //note: for Genesis3D v1.6 this is of type geFloat
} GE_TLVertex;

This structure stores a Transformed Lit Vertex.

Questions:
What is meant by Transformed? This seems to be the same as GE_LVertex except the x,y,z here are labeled screen points. What are screen point? Is this in screen coordinate space?

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geColor

typedef struct {
geFloat r, g, b;
} geColor;

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geUV

typedef struct {
geFloat u, v;
} geUV;

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geCoordinate

typedef struct {
geFloat X;
geFloat Y;
} geCoordinate;

Macros:

#define GE_ABS(x)

Computes the absolute value of x.

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#define GE_CLAMP(x,lo,hi)

If x is less than lo, lo is returned, otherwise if x is greater than hi, hi is returned, otherwise x is returned. In other words x is "clamped" between hi and lo.

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#define GE_CLAMP8(x)

This is an 8-bit unsigned (0-255) clamp. See GE_CLAMP above for more information.

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#define GE_CLAMP16(x)

This is a 16-bit unsigned (0-65536) clamp. See GE_CLAMP above for more information

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#define GE_BOOLSAME(x,y)

This returns True if x and y are both true or both false, otherwise it returns False.

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#define GE_EPSILON ((geFloat)0.000797f)

If two floating point values differ by this constant or less then they are considered equivalent per the definition of GE_FLOATS_EQUAL shown below. Thanks to Raul Beltran for clarifying and confirming my suspicions about this. I'm still uncertain what the derivation of the specific value is.

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#define GE_FLOATS_EQUAL(x,y) ( GE_ABS((x) - (y)) < GE_EPSILON )

This appears to define 2 floats (x,y) equal if they only differ by EPSILON as defined above.

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#define GE_FLOAT_ISZERO(x) GE_FLOATS_EQUAL(x,0.0f)

This defines a float as being "equal" to zero if it only differs from zero by EPSILON as define above.

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#define GE_PI ((geFloat)3.14159265358979323846f)

A value to use for pi.

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Model flags (geWorld_ModelSetFlags)

#define GE_MODEL_RENDER_NORMAL   (1<<0) // Render in normal views
#define GE_MODEL_RENDER_MIRRORS   (1<<1) // Render in mirror views
#define GE_MODEL_RENDER_ALWAYS   (1<<2) // Render always, skipping all visibility tests
#define GE_MODEL_COLLIDE    (1<<3) // Collide when calling geWorld_Collision

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