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fix camera manipulator/gesture detector, add explicit functions to set camera pos/rot, add unlitshader material provider

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This commit is contained in:
Nick Fisher
2022-09-01 13:03:15 +10:00
parent 91038bc0d7
commit 26d916fc40
13 changed files with 2085 additions and 118 deletions
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127
lib/gesture_detecting_filament_view.dart
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@@ -1,6 +1,4 @@
import 'package:flutter/material.dart';
import 'package:flutter/widgets.dart';
import 'filament_controller.dart';
import 'filament_widget.dart';
@@ -20,6 +18,29 @@ class GestureDetectingFilamentView extends StatefulWidget {
class _GestureDetectingFilamentViewState
extends State<GestureDetectingFilamentView> {
bool _rotate = false;
late Future Function(double x, double y) _functionStart;
late Future Function(double x, double y) _functionUpdate;
late Future Function() _functionEnd;
double _lastScale = 0;
@override
void initState() {
_setFunction();
super.initState();
}
void _setFunction() {
if (_rotate) {
_functionStart = widget.controller.rotateStart;
_functionUpdate = widget.controller.rotateUpdate;
_functionEnd = widget.controller.rotateEnd;
} else {
_functionStart = widget.controller.panStart;
_functionUpdate = widget.controller.panUpdate;
_functionEnd = widget.controller.panEnd;
}
}
@override
void didUpdateWidget(Widget oldWidget) {
@@ -27,6 +48,7 @@ class _GestureDetectingFilamentViewState
(oldWidget as GestureDetectingFilamentView).showControls) {
setState(() {});
}
super.didUpdateWidget(oldWidget);
}
@@ -36,67 +58,58 @@ class _GestureDetectingFilamentViewState
Positioned.fill(
child: GestureDetector(
behavior: HitTestBehavior.opaque,
onPanDown: (details) async {
await widget.controller.panEnd();
await widget.controller.rotateEnd();
_rotate
? widget.controller.rotateStart(
details.globalPosition.dx, details.globalPosition.dy)
: widget.controller.panStart(
details.globalPosition.dx, details.globalPosition.dy);
onScaleStart: (d) {
if (d.pointerCount == 2) {
// _lastScale = d.
} else {
// print("start ${d.focalPoint}");
_functionStart(d.focalPoint.dx, d.focalPoint.dy);
}
},
onPanUpdate: (details) {
_rotate
? widget.controller.rotateUpdate(
details.globalPosition.dx, details.globalPosition.dy)
: widget.controller.panUpdate(
details.globalPosition.dx, details.globalPosition.dy);
onScaleEnd: (d) {
if (d.pointerCount == 2) {
_lastScale = 0;
} else {
// print("end ${d.velocity}");
_functionEnd();
}
},
onPanEnd: (d) {
_rotate
? widget.controller.rotateEnd()
: widget.controller.panEnd();
onScaleUpdate: (d) {
if (d.pointerCount == 2) {
if (_lastScale == 0) {
_lastScale = d.scale;
} else {
// var zoomFactor = ;
// if(zoomFactor < 0) {
// zoomFactor *= 10;
// }
// print(zoomFactor);
print(d.horizontalScale);
// print(d.focalPoint.dx);
widget.controller.zoom(d.scale > 1 ? 10 : -10);
}
} else {
// print("update ${d.focalPoint}");
_functionUpdate(d.focalPoint.dx, d.focalPoint.dy);
}
},
child: FilamentWidget(controller: widget.controller))),
widget.showControls
? Padding(
padding: const EdgeInsets.all(50),
child: Row(children: [
Checkbox(
value: _rotate,
onChanged: (v) {
setState(() {
_rotate = v == true;
});
}),
ElevatedButton(
onPressed: () => widget.controller.zoom(30.0),
child: const Text('-')),
ElevatedButton(
onPressed: () => widget.controller.zoom(-30.0),
child: const Text('+'))
]))
? Align(alignment:Alignment.bottomRight, child:GestureDetector(
onTap: () {
setState(() {
_rotate = !_rotate;
_setFunction();
});
},
child: Container(
padding: const EdgeInsets.all(50),
child: Icon(Icons.rotate_90_degrees_ccw,
color: _rotate
? Colors.white
: Colors.white.withOpacity(0.5))),
))
: Container()
]);
}
}
// behavior: HitTestBehavior.opaque,
// onPanDown: (details) {
// _rotate
// ? _filamentController.rotateStart(
// details.globalPosition.dx, details.globalPosition.dy)
// : _filamentController.panStart(
// details.globalPosition.dx, details.globalPosition.dy);
// },
// onPanUpdate: (details) {
// _rotate
// ? _filamentController.rotateUpdate(
// details.globalPosition.dx, details.globalPosition.dy)
// : _filamentController.panUpdate(
// details.globalPosition.dx, details.globalPosition.dy);
// },
// onPanEnd: (d) {
// _rotate
// ? _filamentController.rotateEnd()
// : _filamentController.panEnd();
// },