ARCoreRaycastSubsystem.cs
7.4 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
using System.Runtime.InteropServices;
using UnityEngine.Scripting;
using UnityEngine.XR.ARSubsystems;
using Unity.Collections;
namespace UnityEngine.XR.ARCore
{
/// <summary>
/// ARCore implementation of the <c>XRRaycastSubsystem</c>. Do not create this directly. Use the <c>SubsystemManager</c> instead.
/// </summary>
[Preserve]
public sealed class ARCoreRaycastSubsystem : XRRaycastSubsystem
{
#if !UNITY_2020_2_OR_NEWER
/// <summary>
/// Creates the ARCore-specific implementation which will service the `XRRaycastSubsystem`.
/// </summary>
/// <returns>A new instance of the `Provider` specific to ARCore.</returns>
protected override Provider CreateProvider() => new ARCoreProvider();
#endif
class ARCoreProvider : Provider
{
public override void Start() => UnityARCore_raycast_startTracking();
public override void Stop() => UnityARCore_raycast_stopTracking();
public override void Destroy() => UnityARCore_raycast_destroy();
public override unsafe TrackableChanges<XRRaycast> GetChanges(
XRRaycast defaultRaycast,
Allocator allocator)
{
int addedLength, updatedLength, removedLength, elementSize;
void* addedPtr, updatedPtr, removedPtr;
var context = UnityARCore_raycast_acquireChanges(
out addedPtr, out addedLength,
out updatedPtr, out updatedLength,
out removedPtr, out removedLength,
out elementSize);
try
{
return new TrackableChanges<XRRaycast>(
addedPtr, addedLength,
updatedPtr, updatedLength,
removedPtr, removedLength,
defaultRaycast, elementSize,
allocator);
}
finally
{
UnityARCore_raycast_releaseChanges(context);
}
}
public override bool TryAddRaycast(Vector2 screenPoint, float estimatedDistance, out XRRaycast sessionRelativeData)
{
return UnityARCore_raycast_tryAddRaycast(screenPoint, estimatedDistance, out sessionRelativeData);
}
public override void RemoveRaycast(TrackableId trackableId)
{
UnityARCore_raycast_removeRaycast(trackableId);
}
public override unsafe NativeArray<XRRaycastHit> Raycast(
XRRaycastHit defaultRaycastHit,
Ray ray,
TrackableType trackableTypeMask,
Allocator allocator)
{
void* hitBuffer;
int hitCount, elementSize;
UnityARCore_raycast_acquireHitResultsRay(
ray.origin,
ray.direction,
trackableTypeMask,
out hitBuffer,
out hitCount,
out elementSize);
try
{
return NativeCopyUtility.PtrToNativeArrayWithDefault<XRRaycastHit>(
defaultRaycastHit,
hitBuffer, elementSize,
hitCount, allocator);
}
finally
{
UnityARCore_raycast_releaseHitResults(hitBuffer);
}
}
public override unsafe NativeArray<XRRaycastHit> Raycast(
XRRaycastHit defaultRaycastHit,
Vector2 screenPoint,
TrackableType trackableTypeMask,
Allocator allocator)
{
void* hitBuffer;
int hitCount, elementSize;
UnityARCore_raycast_acquireHitResults(
screenPoint,
trackableTypeMask,
out hitBuffer,
out hitCount,
out elementSize);
try
{
return NativeCopyUtility.PtrToNativeArrayWithDefault<XRRaycastHit>(
defaultRaycastHit,
hitBuffer, elementSize,
hitCount, allocator);
}
finally
{
UnityARCore_raycast_releaseHitResults(hitBuffer);
}
}
[DllImport("UnityARCore")]
static unsafe extern void UnityARCore_raycast_acquireHitResults(
Vector2 screenPoint,
TrackableType filter,
out void* hitBuffer,
out int hitCount,
out int elementSize);
[DllImport("UnityARCore")]
static unsafe extern void UnityARCore_raycast_acquireHitResultsRay(
Vector3 rayOrigin,
Vector3 rayDirection,
TrackableType filter,
out void* hitBuffer,
out int hitCount,
out int elementSize);
[DllImport("UnityARCore")]
static unsafe extern void UnityARCore_raycast_releaseHitResults(
void* buffer);
[DllImport("UnityARCore")]
static unsafe extern bool UnityARCore_raycast_tryAddRaycast(
Vector2 screenPoint,
float estimatedDistance,
out XRRaycast raycastOut);
[DllImport("UnityARCore")]
static unsafe extern void UnityARCore_raycast_removeRaycast(
TrackableId trackableId);
[DllImport("UnityARCore")]
static extern void UnityARCore_raycast_startTracking();
[DllImport("UnityARCore")]
static extern void UnityARCore_raycast_stopTracking();
[DllImport("UnityARCore")]
static extern unsafe void* UnityARCore_raycast_acquireChanges(
out void* addedPtr, out int addedLength,
out void* updatedPtr, out int updatedLength,
out void* removedPtr, out int removedLength,
out int elementSize);
[DllImport("UnityARCore")]
static extern unsafe void UnityARCore_raycast_releaseChanges(
void* changes);
[DllImport("UnityARCore")]
static extern void UnityARCore_raycast_destroy();
}
[RuntimeInitializeOnLoadMethod(RuntimeInitializeLoadType.SubsystemRegistration)]
static void RegisterDescriptor()
{
if (!Api.platformAndroid || !Api.loaderPresent)
return;
XRRaycastSubsystemDescriptor.RegisterDescriptor(new XRRaycastSubsystemDescriptor.Cinfo
{
id = "ARCore-Raycast",
#if UNITY_2020_2_OR_NEWER
providerType = typeof(ARCoreRaycastSubsystem.ARCoreProvider),
subsystemTypeOverride = typeof(ARCoreRaycastSubsystem),
#else
subsystemImplementationType = typeof(ARCoreRaycastSubsystem),
#endif
supportsViewportBasedRaycast = true,
supportsWorldBasedRaycast = true,
supportedTrackableTypes =
(TrackableType.Planes & ~TrackableType.PlaneWithinInfinity) |
TrackableType.FeaturePoint,
supportsTrackedRaycasts = true,
});
}
}
}