| 1 | /**********************************************************************
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| 2 | *<
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| 3 | FILE: snap.h
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| 4 |
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| 5 | DESCRIPTION: Definitions for snap functionality
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| 6 |
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| 7 | CREATED BY: Tom Hudson
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| 8 |
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| 9 | HISTORY:
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| 10 |
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| 11 | *> Copyright (c) 1995, All Rights Reserved.
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| 12 | **********************************************************************/
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| 13 |
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| 14 | #ifndef _SNAP_H_
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| 15 |
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| 16 | #define _SNAP_H_
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| 17 |
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| 18 | // Snap types used in Jaguar
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| 19 |
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| 20 | #define SNAP_2D 1 // 2-D Snap
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| 21 | #define SNAP_25D 2 // 2 1/2-D Snap
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| 22 | #define SNAP_3D 3 // 3-D Snap
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| 23 |
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| 24 | // Snap modes
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| 25 |
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| 26 | #define SNAPMODE_RELATIVE 0
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| 27 | #define SNAPMODE_ABSOLUTE 1
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| 28 |
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| 29 | // Snap flags
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| 30 |
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| 31 | #define SNAP_IN_3D (0) // Snap to all points (looks dumb here, but code reads easier)
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| 32 | #define SNAP_IN_PLANE (1<<0) // Snap only to points in plane
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| 33 | #define SNAP_UNSEL_OBJS_ONLY (1<<1) // Ignore selected nodes
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| 34 | #define SNAP_SEL_OBJS_ONLY (1<<2) // Ignore unselected nodes
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| 35 | #define SNAP_UNSEL_SUBOBJ_ONLY (1<<3) // Ignore selected geometry
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| 36 | #define SNAP_SEL_SUBOBJ_ONLY (1<<4) // Ignore unselected geometry
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| 37 | #define SNAP_FORCE_3D_RESULT (1<<5) // Override user settings to force snap in 3D
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| 38 |
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| 39 | // Snap information structure
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| 40 |
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| 41 | typedef struct {
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| 42 | // The snap settings for this operation
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| 43 | int snapType; // See above
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| 44 | int strength; // Maximum snap distance
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| 45 | int vertPriority; // Geometry vertex priority
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| 46 | int edgePriority; // Geometry edge priority
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| 47 | int gIntPriority; // Grid intersection priority
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| 48 | int gLinePriority; // Grid line priority
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| 49 | DWORD flags; // See above
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| 50 | Matrix3 plane; // Plane to use for snap computations
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| 51 | // The best snap so far...
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| 52 | Point3 bestWorld; // Best snap point in world space
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| 53 | Point2 bestScreen; // Best snap point in screen space
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| 54 | int bestDist; // Best snap point distance
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| 55 | int priority; // Best point's priority
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| 56 | } SnapInfo;
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| 57 |
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| 58 | // Initialize snap info structure with current snap settings
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| 59 | // (Returns zero if snap is OFF)
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| 60 | extern int InitSnapInfo(SnapInfo *info);
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| 61 |
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| 62 | #endif // _SNAP_H_
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