void UpdateReticleView(UITouch touch, bool predicated = false)
{
if (touch == null || touch.Type != UITouchType.Stylus)
{
return;
}
ReticleView.PredictedDotLayer.Hidden = !predicated;
ReticleView.PredictedLineLayer.Hidden = !predicated;
var azimuthAngle = touch.GetAzimuthAngle(View);
var azimuthUnitVector = touch.GetAzimuthUnitVector(View);
var altitudeAngle = touch.AltitudeAngle;
if (predicated)
{
ReticleView.PredictedAzimuthAngle = azimuthAngle;
ReticleView.PredictedAzimuthUnitVector = azimuthUnitVector;
ReticleView.PredictedAltitudeAngle = altitudeAngle;
}
else
{
var location = touch.PreviousLocationInView(View);
ReticleView.Center = location;
ReticleView.ActualAzimuthAngle = azimuthAngle;
ReticleView.ActualAzimuthUnitVector = azimuthUnitVector;
ReticleView.ActualAltitudeAngle = altitudeAngle;
}
}
void UpdateReticleView(UITouch touch, bool predicated = false)
{
if (touch == null)
{
return;
}
ReticleView.PredictedDotLayer.Hidden = !predicated;
ReticleView.PredictedLineLayer.Hidden = !predicated;
ReticleView.Center = touch.LocationInView(touch.View);
var azimuthAngle = touch.GetAzimuthAngle(touch.View);
var azimuthUnitVector = touch.GetAzimuthUnitVector(touch.View);
var altitudeAngle = touch.AltitudeAngle;
if (predicated)
{
ReticleView.PredictedAzimuthAngle = azimuthAngle;
ReticleView.PredictedAzimuthUnitVector = azimuthUnitVector;
ReticleView.PredictedAzimuthAngle = altitudeAngle;
}
else
{
ReticleView.ActualAzimuthAngle = azimuthAngle;
ReticleView.ActualAzimuthUnitVector = azimuthUnitVector;
ReticleView.ActualAzimuthAngle = altitudeAngle;
}
}
private nfloat LineWidthForShading(CGContext context, UITouch touch)
{
var previousLocation = touch.PreviousLocationInView(this);
var location = touch.LocationInView(this);
var vector1 = touch.GetAzimuthUnitVector(this);
var vector2 = new CGPoint(location.X - previousLocation.X, location.Y - previousLocation.Y);
var angle = Math.Abs(Math.Atan2(vector2.Y, vector2.X) - Math.Atan2(vector1.dy, vector1.dx));
angle = angle > π ? 2 * π - angle : π - angle;
var minAngle = 0;
var maxAngle = π / 2;
var normalizedAngle = (angle - minAngle) / (maxAngle - minAngle);
var maxLineWidth = 60;
var lineWidth = maxLineWidth * normalizedAngle;
var minAltitudeAngle = 0.25;
var maxAltitudeAngle = TiltThreshold;
var altitudeAngle = Math.Min(minAltitudeAngle, touch.AltitudeAngle);
var normalizedAltitude = 1 - ((altitudeAngle - minAltitudeAngle) / (maxAltitudeAngle - minAltitudeAngle));
lineWidth = lineWidth * normalizedAltitude + MinLineWidth;
var minForce = 0;
var maxForce = 5;
var normalizedAlpha = (touch.Force - minForce) / (maxForce - minForce);
context.SetAlpha(normalizedAlpha);
return((nfloat)lineWidth);
}
void UpdateReticleView (UITouch touch, bool predicated = false)
{
if (touch == null)
return;
ReticleView.PredictedDotLayer.Hidden = !predicated;
ReticleView.PredictedLineLayer.Hidden = !predicated;
ReticleView.Center = touch.LocationInView (touch.View);
var azimuthAngle = touch.GetAzimuthAngle (touch.View);
var azimuthUnitVector = touch.GetAzimuthUnitVector (touch.View);
var altitudeAngle = touch.AltitudeAngle;
if (predicated) {
ReticleView.PredictedAzimuthAngle = azimuthAngle;
ReticleView.PredictedAzimuthUnitVector = azimuthUnitVector;
ReticleView.PredictedAzimuthAngle = altitudeAngle;
} else {
ReticleView.ActualAzimuthAngle = azimuthAngle;
ReticleView.ActualAzimuthUnitVector = azimuthUnitVector;
ReticleView.ActualAzimuthAngle = altitudeAngle;
}
}
void UpdateReticleView (UITouch touch, bool predicated = false)
{
if (touch == null || touch.Type != UITouchType.Stylus)
return;
ReticleView.PredictedDotLayer.Hidden = !predicated;
ReticleView.PredictedLineLayer.Hidden = !predicated;
var azimuthAngle = touch.GetAzimuthAngle (View);
var azimuthUnitVector = touch.GetAzimuthUnitVector (View);
var altitudeAngle = touch.AltitudeAngle;
if (predicated) {
ReticleView.PredictedAzimuthAngle = azimuthAngle;
ReticleView.PredictedAzimuthUnitVector = azimuthUnitVector;
ReticleView.PredictedAltitudeAngle = altitudeAngle;
} else {
var location = touch.PreviousLocationInView (View);
ReticleView.Center = location;
ReticleView.ActualAzimuthAngle = azimuthAngle;
ReticleView.ActualAzimuthUnitVector = azimuthUnitVector;
ReticleView.ActualAltitudeAngle = altitudeAngle;
}
}
