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a/Scripts/Cast.meta b/Scripts/Cast.meta new file mode 100644 index 00000000..12655a0e --- /dev/null +++ b/Scripts/Cast.meta @@ -0,0 +1,3 @@ +fileFormatVersion: 2 +guid: 156756a9266a4c42a4c9363aee845395 +timeCreated: 1526407015 \ No newline at end of file diff --git a/Scripts/Cast/ParabolicLineCast.cs b/Scripts/Cast/ParabolicLineCast.cs new file mode 100644 index 00000000..da7b88a2 --- /dev/null +++ b/Scripts/Cast/ParabolicLineCast.cs @@ -0,0 +1,178 @@ +namespace VRTK.Core.Cast +{ + using UnityEngine; + using VRTK.Core.Utility; + + /// + /// Casts a parabolic line and creates points at the origin, the target and in between. + /// + public class ParabolicLineCast : PointsCast + { + /// + /// Used to move the points back and up a bit to prevent the cast clipping at the collision points. + /// + protected const float ADJUSTMENT_OFFSET = 0.0001f; + + /// + /// The maximum length of the projected cast. The x value is the length of the forward cast, the y value is the length of the downward cast. + /// + [Tooltip("The maximum length of the projected cast. The x value is the length of the forward cast, the y value is the length of the downward cast.")] + public Vector2 maximumLength = new Vector2(10f, float.PositiveInfinity); + /// + /// The maximum angle in degrees of the origin before the cast line height is restricted. A lower angle setting will prevent the cast being projected high into the sky and curving back down. + /// + [Range(1, 100)] + [Tooltip("The maximum angle in degrees of the origin before the cast line height is restricted. A lower angle setting will prevent the cast being projected high into the sky and curving back down.")] + public float heightLimitAngle = 100f; + /// + /// The number of points to generate on the parabolic line. + /// + /// The higher the number, the more CPU intensive the point generation becomes. + [Tooltip("The number of points to generate on the parabolic line. The higher the number, the more CPU intensive the point generation becomes.")] + public int segmentCount = 10; + /// + /// The number of points along the parabolic line to check for an early cast collision. Useful if the parabolic line is appearing to clip through locations. 0 won't make any checks and it will be capped at . + /// + /// The higher the number, the more CPU intensive the checks become. + [Tooltip("The number of points along the parabolic line to check for an early cast collision. Useful if the parabolic line is appearing to clip through locations. 0 won't make any checks and it will be capped at the set segment count. The higher the number, the more CPU intensive the checks become.")] + public int collisionCheckFrequency; + /// + /// The amount of height offset to apply to the projected cast to generate a smoother line even when the cast is pointing straight. + /// + [Tooltip("The amount of height offset to apply to the projected cast to generate a smoother line even when the cast is pointing straight.")] + public float curveOffset = 1f; + + /// + public override void CastPoints() + { + Vector3 forward = ProjectForward(); + Vector3 down = ProjectDown(forward); + GeneratePointsIncludingSegments(forward, down); + } + + /// + /// Projects a straight line forward from the current . + /// + /// The collision point or the point being the furthest away on the cast line if nothing is hit. + protected virtual Vector3 ProjectForward() + { + float rotation = Vector3.Dot(Vector3.up, transform.forward.normalized); + float length = maximumLength.x; + + if (rotation * 100f > heightLimitAngle) + { + float controllerRotationOffset = 1f - (rotation - heightLimitAngle / 100f); + length = maximumLength.x * controllerRotationOffset * controllerRotationOffset; + } + + Ray ray = new Ray(transform.position, transform.forward); + RaycastHit hitData; + bool hasCollided = PhysicsCast.Raycast(physicsCast, ray, out hitData, length, Physics.IgnoreRaycastLayer); + + // Adjust the cast length if something is blocking it. + if (hasCollided && hitData.distance < length) + { + length = hitData.distance; + } + + // Use an offset to move the point back and up a bit to prevent the cast clipping at the collision point. + return ray.GetPoint(length - ADJUSTMENT_OFFSET) + Vector3.up * ADJUSTMENT_OFFSET; + } + + /// + /// Projects a straight line downwards from the provided point. + /// + /// The origin of the projected line. + /// The collision point or the point being the furthest away on the cast line if nothing is hit. + protected virtual Vector3 ProjectDown(Vector3 origin) + { + Vector3 point = Vector3.zero; + Ray ray = new Ray(origin, Vector3.down); + RaycastHit hitData; + + bool downRayHit = PhysicsCast.Raycast(physicsCast, ray, out hitData, maximumLength.y, Physics.IgnoreRaycastLayer); + + if (!downRayHit || (TargetHit?.collider != null && TargetHit.Value.collider != hitData.collider)) + { + TargetHit = null; + point = ray.GetPoint(0f); + } + + if (downRayHit) + { + point = ray.GetPoint(hitData.distance); + TargetHit = hitData; + } + + return point; + } + + /// + /// Checks for collisions along the parabolic line segments and generates the final points. + /// + /// The forward direction to use for the checks. + /// The downwards direction to use for the checks. + protected virtual void GeneratePointsIncludingSegments(Vector3 forward, Vector3 down) + { + GeneratePoints(forward, down); + + collisionCheckFrequency = Mathf.Clamp(collisionCheckFrequency, 0, segmentCount); + int step = segmentCount / (collisionCheckFrequency > 0 ? collisionCheckFrequency : 1); + + for (int index = 0; index < segmentCount - step; index += step) + { + Vector3 currentPoint = points[index]; + Vector3 nextPoint = index + step < points.Count ? points[index + step] : points[points.Count - 1]; + Vector3 nextPointDirection = (nextPoint - currentPoint).normalized; + float nextPointDistance = Vector3.Distance(currentPoint, nextPoint); + + Ray pointsRay = new Ray(currentPoint, nextPointDirection); + RaycastHit pointsHitData; + + if (!PhysicsCast.Raycast(physicsCast, pointsRay, out pointsHitData, nextPointDistance, Physics.IgnoreRaycastLayer)) + { + continue; + } + + Vector3 collisionPoint = pointsRay.GetPoint(pointsHitData.distance); + Ray downwardRay = new Ray(collisionPoint + Vector3.up * 0.01f, Vector3.down); + RaycastHit downwardHitData; + + if (!PhysicsCast.Raycast(physicsCast, downwardRay, out downwardHitData, float.PositiveInfinity, Physics.IgnoreRaycastLayer)) + { + continue; + } + + TargetHit = downwardHitData; + + Vector3 newDownPosition = downwardRay.GetPoint(downwardHitData.distance); + Vector3 newJointPosition = newDownPosition.y < forward.y ? new Vector3(newDownPosition.x, forward.y, newDownPosition.z) : forward; + GeneratePoints(newJointPosition, newDownPosition); + + break; + } + + OnCastResultsChanged(); + } + + /// + /// Generates points on a parabolic line. + /// + /// The end point of the forward cast. + /// The end point of the down cast. + /// The generated points on the parabolic line. + protected virtual void GeneratePoints(Vector3 forward, Vector3 down) + { + Vector3[] curvePoints = + { + transform.position, + forward + new Vector3(0f, curveOffset, 0f), + down, + down + }; + + points.Clear(); + points.AddRange(BezierCurveGenerator.GeneratePoints(segmentCount, curvePoints)); + } + } +} diff --git a/Scripts/Cast/ParabolicLineCast.cs.meta b/Scripts/Cast/ParabolicLineCast.cs.meta new file mode 100644 index 00000000..95258a9a --- /dev/null +++ b/Scripts/Cast/ParabolicLineCast.cs.meta @@ -0,0 +1,3 @@ +fileFormatVersion: 2 +guid: f57b1a00a82f48d3a19652931fc4887d +timeCreated: 1526406952 \ No newline at end of file diff --git a/Scripts/Utility/PhysicsCast.cs b/Scripts/Cast/PhysicsCast.cs similarity index 98% rename from Scripts/Utility/PhysicsCast.cs rename to Scripts/Cast/PhysicsCast.cs index a2d89fd0..19a8196e 100644 --- a/Scripts/Utility/PhysicsCast.cs +++ b/Scripts/Cast/PhysicsCast.cs @@ -1,4 +1,4 @@ -namespace VRTK.Core.Utility +namespace VRTK.Core.Cast { using UnityEngine; diff --git a/Scripts/Utility/PhysicsCast.cs.meta b/Scripts/Cast/PhysicsCast.cs.meta similarity index 100% rename from Scripts/Utility/PhysicsCast.cs.meta rename to Scripts/Cast/PhysicsCast.cs.meta diff --git a/Scripts/Cast/PointsCast.cs b/Scripts/Cast/PointsCast.cs new file mode 100644 index 00000000..06166b31 --- /dev/null +++ b/Scripts/Cast/PointsCast.cs @@ -0,0 +1,107 @@ +namespace VRTK.Core.Cast +{ + using UnityEngine; + using UnityEngine.Events; + using System; + using System.Collections.Generic; + using VRTK.Core.Process; + using VRTK.Core.Utility; + + /// + /// Contains information about the current state. + /// + public class PointsCastData + { + /// + /// The result of the most recent cast. when the cast didn't hit anything. + /// + public RaycastHit? targetHit; + /// + /// The points along the the most recent cast. + /// + public IReadOnlyList points; + } + + /// + /// The base of casting components that result in points along the cast. + /// + public abstract class PointsCast : MonoBehaviour, IProcessable + { + /// + /// Allows to optionally affect the cast. + /// + [Tooltip("Allows to optionally affect the cast.")] + public PhysicsCast physicsCast; + /// + /// Allows to optionally determine targets based on the set rules. + /// + [Tooltip("Allows to optionally determine targets based on the set rules.")] + public ExclusionRule targetValidity; + + /// + /// Defines the event with the state and sender . + /// + [Serializable] + public class PointsCastUnityEvent : UnityEvent + { + } + + /// + /// Emitted whenever the cast result changes. + /// + public PointsCastUnityEvent CastResultsChanged = new PointsCastUnityEvent(); + + /// + /// The result of the most recent cast. when the cast didn't hit anything or an invalid target according to . + /// + public RaycastHit? TargetHit + { + get + { + return targetHit; + } + protected set + { + targetHit = value != null && !ExclusionRule.ShouldExclude(value.Value.transform.gameObject, targetValidity) ? value : null; + } + } + + /// + /// The points along the the most recent cast. + /// + public IReadOnlyList Points => points; + + protected List points = new List(); + + private RaycastHit? targetHit; + + /// + /// Casts and creates points along the cast. + /// + public abstract void CastPoints(); + + /// + public void Process() + { + CastPoints(); + } + + /// + /// Builds the event payload for the current state of the cast. + /// + /// The current state of the cast. + protected virtual PointsCastData GetPayload() + { + return new PointsCastData + { + targetHit = TargetHit, + points = Points + }; + } + + protected virtual void OnCastResultsChanged() + { + CastResultsChanged?.Invoke(GetPayload(), this); + } + } +} \ No newline at end of file diff --git a/Scripts/Cast/PointsCast.cs.meta b/Scripts/Cast/PointsCast.cs.meta new file mode 100644 index 00000000..c9728400 --- /dev/null +++ b/Scripts/Cast/PointsCast.cs.meta @@ -0,0 +1,3 @@ +fileFormatVersion: 2 +guid: 8c527ebb1902401b89088eb9c8e627df +timeCreated: 1526406894 \ No newline at end of file diff --git a/Scripts/Cast/StraightLineCast.cs b/Scripts/Cast/StraightLineCast.cs new file mode 100644 index 00000000..ff67d744 --- /dev/null +++ b/Scripts/Cast/StraightLineCast.cs @@ -0,0 +1,37 @@ +namespace VRTK.Core.Cast +{ + using UnityEngine; + using System.Linq; + + /// + /// Casts a straight line and creates points at the origin and target. + /// + public class StraightLineCast : PointsCast + { + /// + /// The maximum length to cast. + /// + [Tooltip("The maximum length to cast.")] + public float maximumLength = 100f; + + protected virtual void Awake() + { + points.Clear(); + points.AddRange(Enumerable.Repeat(Vector3.zero, 2)); + } + + /// + public override void CastPoints() + { + Ray ray = new Ray(transform.position, transform.forward); + RaycastHit hitData; + bool hasCollided = PhysicsCast.Raycast(physicsCast, ray, out hitData, maximumLength, Physics.IgnoreRaycastLayer); + TargetHit = hasCollided ? hitData : (RaycastHit?)null; + + points[0] = transform.position; + points[1] = hasCollided ? hitData.point : transform.position + transform.forward * maximumLength; + + OnCastResultsChanged(); + } + } +} \ No newline at end of file diff --git a/Scripts/Cast/StraightLineCast.cs.meta b/Scripts/Cast/StraightLineCast.cs.meta new file mode 100644 index 00000000..7fec7946 --- /dev/null +++ b/Scripts/Cast/StraightLineCast.cs.meta @@ -0,0 +1,3 @@ +fileFormatVersion: 2 +guid: 7934e9d7f2f8434c9358d4d4e8a14b6a +timeCreated: 1526406940 \ No newline at end of file diff --git a/Scripts/Pointer.meta b/Scripts/Pointer.meta new file mode 100644 index 00000000..ce99db63 --- /dev/null +++ b/Scripts/Pointer.meta @@ -0,0 +1,8 @@ +fileFormatVersion: 2 +guid: 2a8115f519a29a948b2df09b1e703d7a +folderAsset: yes +DefaultImporter: + externalObjects: {} + userData: + assetBundleName: + assetBundleVariant: diff --git a/Scripts/Pointer/Pointer.cs b/Scripts/Pointer/Pointer.cs new file mode 100644 index 00000000..64bf46a0 --- /dev/null +++ b/Scripts/Pointer/Pointer.cs @@ -0,0 +1,442 @@ +namespace VRTK.Core.Pointer +{ + using UnityEngine; + using UnityEngine.Events; + using System; + using System.Collections.Generic; + using System.Linq; + using VRTK.Core.Cast; + using VRTK.Core.Data.Type; + using VRTK.Core.Visual; + + /// + /// Contains information about the current state. + /// + public class PointerData : SurfaceData + { + /// + /// Whether the is currently activated. + /// + public bool isActive; + /// + /// Whether the is currently hovering over a target. + /// + public bool isHovering; + /// + /// The duration that the has been hovering over it's current target. + /// + public float hoverDuration; + /// + /// The points cast data given to the . + /// + public PointsCastData pointsCastData; + } + + /// + /// Allows pointing at objects and notifies when a target is hit, continues to be hit or stops being hit by listening to a . + /// + public class Pointer : MonoBehaviour + { + /// + /// Describes an element of the rendered . + /// + [Serializable] + public class Element + { + /// + /// The visibility of an . + /// + public enum Visibility + { + /// + /// The will only be visible when the is activated. + /// + OnWhenPointerActivated, + /// + /// The will always be visible regardless of the state. + /// + AlwaysOn, + /// + /// The will never be visible regardless of the state. + /// + AlwaysOff + } + + /// + /// Represents the when it's colliding with a valid object. + /// + [Tooltip("Represents the Element when it's colliding with a valid object.")] + public GameObject validObject; + /// + /// Represents the when it's colliding with an invalid object or not colliding at all. + /// + [Tooltip("Represents the Element when it's colliding with an invalid object or not colliding at all.")] + public GameObject invalidObject; + /// + /// Determines when the is visible. + /// + [Tooltip("Determines when the Element is visible.")] + public Visibility visibility = Visibility.OnWhenPointerActivated; + } + + /// + /// Defines the event with the state and sender . + /// + /// The data is in case the isn't hitting any target. + [Serializable] + public class PointerUnityEvent : UnityEvent + { + } + + /// + /// Defines the event with the state and sender . + /// + [Serializable] + public class PointsRendererUnityEvent : UnityEvent + { + } + + /// + /// Determines if the should be automatically activated when the script is enabled. + /// + [Tooltip("Determines if the pointer should be automatically activated when the script is enabled.")] + public bool activateOnEnable; + + /// + /// Represents the origin, i.e. the first rendered point. + /// + [Tooltip("Represents the origin, i.e. the first rendered point.")] + public Element origin; + /// + /// Represents the segments between and . This will get cloned to create all the segments. + /// + [Tooltip("Represents the segments between origin and destination. This will get cloned to create all the segments.")] + public Element repeatedSegment; + /// + /// Represents the destination, i.e. the last rendered point. + /// + [Tooltip("Represents the destination, i.e. the last rendered point.")] + public Element destination; + + /// + /// The Activated event is emitted when the becomes active. + /// + public PointerUnityEvent Activated = new PointerUnityEvent(); + /// + /// The Deactivated event is emitted when the becomes inactive. + /// + public PointerUnityEvent Deactivated = new PointerUnityEvent(); + /// + /// Emitted when the collides with a new target. + /// + public PointerUnityEvent Entered = new PointerUnityEvent(); + /// + /// Emitted when the stops colliding with an existing target. + /// + public PointerUnityEvent Exited = new PointerUnityEvent(); + /// + /// Emitted when the changes its hovering position over an existing target. + /// + public PointerUnityEvent Hovering = new PointerUnityEvent(); + /// + /// Emitted whenever is called. + /// + public PointerUnityEvent Selected = new PointerUnityEvent(); + /// + /// Emitted when the elements change. + /// + public PointsRendererUnityEvent RenderDataChanged = new PointsRendererUnityEvent(); + /// + /// Emitted when the becomes visible. + /// + public PointerUnityEvent BecameVisible = new PointerUnityEvent(); + /// + /// Emitted when the becomes hidden. + /// + public PointerUnityEvent BecameHidden = new PointerUnityEvent(); + + /// + /// The activation state of the . + /// + public bool ActivationState + { + get; + protected set; + } + + /// + /// Reports hover duration of the over the current target. + /// + public float HoverDuration + { + get; + protected set; + } + + /// + /// Whether the is currently hovering over a target. + /// + /// if the is currently hovering over a target, otherwise. + public bool IsHovering => HoverDuration > 0f; + + /// + /// Whether any of the is currently visible. + /// + public bool IsVisible + { + get + { + if (!enabled) + { + return false; + } + + if (origin.visibility == Element.Visibility.AlwaysOff && repeatedSegment.visibility == Element.Visibility.AlwaysOff && destination.visibility == Element.Visibility.AlwaysOff) + { + return false; + } + + if (origin.visibility == Element.Visibility.AlwaysOn || repeatedSegment.visibility == Element.Visibility.AlwaysOn || destination.visibility == Element.Visibility.AlwaysOn) + { + return true; + } + + return ActivationState; + } + } + + protected PointsCastData previousPointsCastData; + protected bool? previousVisibility; + + /// + /// The current state of the . + /// + /// A object if the is currently hitting a target, otherwise. + public PointerData GetCurrentState() + { + return previousPointsCastData == null ? null : GetPayload(previousPointsCastData); + } + + /// + /// The Activate method turns on the . + /// + public virtual void Activate() + { + ActivationState = true; + UpdateRenderData(); + Activated?.Invoke(GetCurrentState(), this); + } + + /// + /// The Deactivate method turns off the . + /// + public virtual void Deactivate() + { + ActivationState = false; + TryEmitExit(previousPointsCastData); + UpdateRenderData(); + Deactivated?.Invoke(GetCurrentState(), this); + } + + /// + /// Gets the current state and emits it through . + /// + public virtual void Select() + { + Selected?.Invoke(ActivationState ? GetCurrentState() : null, this); + } + + /// + /// Handles the provided data to transition state and emit the events. + /// + /// The data describing the results of the most recent cast. + /// The initiator of this method. + public virtual void HandleData(PointsCastData data, object initiator = null) + { + if (data.targetHit != null) + { + Transform targetTransform = data.targetHit.Value.transform; + if (targetTransform != null && targetTransform != previousPointsCastData?.targetHit?.transform) + { + TryEmitExit(data); + OnEntered(data); + } + + HoverDuration += Time.deltaTime; + OnHovering(data); + } + else + { + TryEmitExit(data); + } + + previousPointsCastData = data; + UpdateRenderData(); + } + + protected virtual void OnEnable() + { + ActivationState = activateOnEnable; + TryEmitVisibilityEvent(); + } + + protected virtual void Update() + { + TryEmitVisibilityEvent(); + } + + /// + /// Updates the 's 's visibility and emits the event with the s used for the s. + /// + protected virtual void UpdateRenderData() + { + PointsRendererData data = new PointsRendererData + { + points = previousPointsCastData?.points ?? Array.Empty(), + start = GetElementRepresentation(origin), + repeatedSegment = GetElementRepresentation(repeatedSegment), + end = GetElementRepresentation(destination) + }; + + GameObject[] gameObjects = + { + origin.validObject, + origin.invalidObject, + repeatedSegment.validObject, + repeatedSegment.invalidObject, + destination.validObject, + destination.invalidObject + }; + IEnumerable unusedGameObjects = gameObjects.Except( + new[] + { + data.start, + data.repeatedSegment, + data.end + }) + .Concat( + new[] + { + repeatedSegment.validObject, + repeatedSegment.invalidObject + }) + .Where(@object => @object != null); + foreach (GameObject unusedGameObject in unusedGameObjects) + { + unusedGameObject.SetActive(false); + } + + IEnumerable usedGameObjects = new[] + { + data.start, + data.repeatedSegment, + data.end + }.Where(@object => @object != null); + foreach (GameObject usedGameObject in usedGameObjects) + { + usedGameObject.SetActive(true); + } + + RenderDataChanged?.Invoke(data, this); + TryEmitVisibilityEvent(); + } + + /// + /// Checks to see if the is not currently colliding with a valid target and emits the event. + /// + /// The current points cast data. + protected virtual void TryEmitExit(PointsCastData data) + { + if (previousPointsCastData?.targetHit?.transform == null) + { + return; + } + + HoverDuration = 0f; + OnExited(data); + previousPointsCastData = null; + } + + /// + /// Emits the or event for the current state in case that state changed. + /// + protected virtual void TryEmitVisibilityEvent() + { + if (IsVisible == previousVisibility) + { + return; + } + + previousVisibility = IsVisible; + + if (IsVisible) + { + BecameVisible?.Invoke(GetCurrentState(), this); + } + else + { + BecameHidden?.Invoke(GetCurrentState(), this); + } + } + + /// + /// Returns the used for a specific based on the current state. + /// + /// The to return a for. + /// A to represent . + protected virtual GameObject GetElementRepresentation(Element element) + { + bool isValid = previousPointsCastData?.targetHit != null; + + switch (element.visibility) + { + case Element.Visibility.OnWhenPointerActivated: + return ActivationState ? (isValid ? element.validObject : element.invalidObject) : null; + case Element.Visibility.AlwaysOn: + return isValid ? element.validObject : element.invalidObject; + case Element.Visibility.AlwaysOff: + return null; + default: + throw new ArgumentOutOfRangeException(nameof(element.visibility), element.visibility, null); + } + } + + /// + /// Builds a valid payload to use in the events. + /// + /// A object of the 's current state. + protected virtual PointerData GetPayload(PointsCastData data) + { + Transform targetTransform = data.targetHit?.transform; + return new PointerData + { + transform = transform, + positionOverride = targetTransform == null ? (Vector3?)null : targetTransform.position, + rotationOverride = targetTransform == null ? (Quaternion?)null : targetTransform.rotation, + localScaleOverride = targetTransform == null ? (Vector3?)null : targetTransform.localScale, + origin = transform.position, + direction = transform.forward, + CollisionData = data.targetHit ?? default(RaycastHit), + isActive = ActivationState, + isHovering = IsHovering, + hoverDuration = HoverDuration, + pointsCastData = data + }; + } + + protected virtual void OnEntered(PointsCastData data) + { + Entered?.Invoke(GetPayload(data), this); + } + + protected virtual void OnExited(PointsCastData data) + { + Exited?.Invoke(GetPayload(data), this); + } + + protected virtual void OnHovering(PointsCastData data) + { + Hovering?.Invoke(GetPayload(data), this); + } + } +} \ No newline at end of file diff --git a/Scripts/Pointer/Pointer.cs.meta b/Scripts/Pointer/Pointer.cs.meta new file mode 100644 index 00000000..7250722d --- /dev/null +++ b/Scripts/Pointer/Pointer.cs.meta @@ -0,0 +1,3 @@ +fileFormatVersion: 2 +guid: 5195ecf61608495884b10998b2c6d117 +timeCreated: 1526406779 \ No newline at end of file diff --git a/Scripts/Tracking/SurfaceLocator.cs b/Scripts/Tracking/SurfaceLocator.cs index d8894112..03601beb 100644 --- a/Scripts/Tracking/SurfaceLocator.cs +++ b/Scripts/Tracking/SurfaceLocator.cs @@ -3,6 +3,7 @@ using UnityEngine; using UnityEngine.Events; using System; + using VRTK.Core.Cast; using VRTK.Core.Utility; using VRTK.Core.Data.Type; using VRTK.Core.Process; diff --git a/Scripts/Utility/BezierCurveGenerator.cs b/Scripts/Utility/BezierCurveGenerator.cs new file mode 100644 index 00000000..ea322a63 --- /dev/null +++ b/Scripts/Utility/BezierCurveGenerator.cs @@ -0,0 +1,52 @@ +namespace VRTK.Core.Utility +{ + using UnityEngine; + using System.Collections.Generic; + + /// + /// A collection of helper methods generating points on a bezier curve. + /// + public static class BezierCurveGenerator + { + /// + /// Generates points on a bezier curve. + /// + /// The number of points to generate. + /// Points defining the bezier curve. + /// The generated points. + public static Vector3[] GeneratePoints(int count, Vector3[] controlPoints) + { + Vector3[] calculatedPoints = new Vector3[count]; + float stepSize = count != 1 ? 1f / (count - 1) : count; + + for (int f = 0; f < count; f++) + { + calculatedPoints[f] = GeneratePoint(controlPoints, f * stepSize); + } + + return calculatedPoints; + } + + private static Vector3 GeneratePoint(IReadOnlyList controlPoints, float t) + { + int index; + if (t >= 1f) + { + t = 1f; + index = controlPoints.Count - 4; + } + else + { + t = Mathf.Clamp01(t) * ((controlPoints.Count - 1) / 3f); + index = (int)t; + t -= index; + index *= 3; + } + + float t1 = t; + t1 = Mathf.Clamp01(t1); + float oneMinusT = 1f - t1; + return oneMinusT * oneMinusT * oneMinusT * controlPoints[index] + 3f * oneMinusT * oneMinusT * t1 * controlPoints[index + 1] + 3f * oneMinusT * t1 * t1 * controlPoints[index + 2] + t1 * t1 * t1 * controlPoints[index + 3]; + } + } +} diff --git a/Scripts/Utility/BezierCurveGenerator.cs.meta b/Scripts/Utility/BezierCurveGenerator.cs.meta new file mode 100644 index 00000000..e326d7da --- /dev/null +++ b/Scripts/Utility/BezierCurveGenerator.cs.meta @@ -0,0 +1,3 @@ +fileFormatVersion: 2 +guid: a17fd115e2a54dbeb58716bc64cb8c7c +timeCreated: 1526417342 \ No newline at end of file diff --git a/Scripts/Utility/TransformExtensions.cs b/Scripts/Utility/TransformExtensions.cs new file mode 100644 index 00000000..b56c20ca --- /dev/null +++ b/Scripts/Utility/TransformExtensions.cs @@ -0,0 +1,18 @@ +namespace VRTK.Core.Utility +{ + using UnityEngine; + + public static class TransformExtensions + { + /// + /// The SetGlobalScale method is used to set a transform scale based on a global scale instead of a local scale. + /// + /// The reference to the transform to scale. + /// A Vector3 of a global scale to apply to the given transform. + public static void SetGlobalScale(this Transform transform, Vector3 globalScale) + { + transform.localScale = Vector3.one; + transform.localScale = new Vector3(globalScale.x / transform.lossyScale.x, globalScale.y / transform.lossyScale.y, globalScale.z / transform.lossyScale.z); + } + } +} diff --git a/Scripts/Utility/TransformExtensions.cs.meta b/Scripts/Utility/TransformExtensions.cs.meta new file mode 100644 index 00000000..4af8e183 --- /dev/null +++ b/Scripts/Utility/TransformExtensions.cs.meta @@ -0,0 +1,3 @@ +fileFormatVersion: 2 +guid: a54e9605dd1c416e8f50e7e6943e3f9a +timeCreated: 1526738386 \ No newline at end of file diff --git a/Scripts/Visual/PointsRenderer.cs b/Scripts/Visual/PointsRenderer.cs new file mode 100644 index 00000000..a13d0743 --- /dev/null +++ b/Scripts/Visual/PointsRenderer.cs @@ -0,0 +1,176 @@ +namespace VRTK.Core.Visual +{ + using UnityEngine; + using System; + using System.Collections.Generic; + using System.Linq; + using VRTK.Core.Utility; + + /// + /// Contains all the data needed for a to render. + /// + public class PointsRendererData + { + /// + /// The points along the the most recent cast. + /// + public IReadOnlyList points; + + /// + /// Represents the start, i.e. the first rendered point. + /// + [Tooltip("Represents the start, i.e. the first rendered point.")] + public GameObject start; + /// + /// Represents the segments between and . This will get cloned to create all the segments. + /// + [Tooltip("Represents the segments between start and end. This will get cloned to create all the segments.")] + public GameObject repeatedSegment; + /// + /// Represents the end, i.e. the last rendered point. + /// + [Tooltip("Represents the end, i.e. the last rendered point.")] + public GameObject end; + } + + /// + /// Renders points using s. + /// + public class PointsRenderer : MonoBehaviour + { + /// + /// The direction to scale the s in. Set axes to 0 to disable scaling on that axis. + /// + [Tooltip("The direction to scale the GameObjects in. Set axes to 0 to disable scaling on that axis.")] + public Vector3 scaleDirection = Vector3.forward; + + /// + /// Represents the start, i.e. the first rendered point. + /// + [Tooltip("Represents the start, i.e. the first rendered point.")] + public GameObject start; + /// + /// Represents the segments between and . This will get cloned to create all the segments. + /// + [Tooltip("Represents the segments between start and end. This will get cloned to create all the segments.")] + public GameObject repeatedSegment; + /// + /// Represents the end, i.e. the last rendered point. + /// + [Tooltip("Represents the end, i.e. the last rendered point.")] + public GameObject end; + + protected readonly List segmentClones = new List(); + + /// + /// Renders the given points. + /// + /// The data to render. + /// The initiator of this method. + public virtual void RenderData(PointsRendererData data, object initiator = null) + { + start = data.start; + end = data.end; + + if (repeatedSegment != data.repeatedSegment) + { + segmentClones.ForEach(Destroy); + segmentClones.Clear(); + + repeatedSegment = data.repeatedSegment; + } + + UpdateNumberOfClones(data.points); + + UpdateElement(data.points, 0, false, start); + UpdateElement(data.points, data.points.Count - 1, false, end); + + for (int index = 0; index < segmentClones.Count; index++) + { + UpdateElement(data.points, index, true, segmentClones[index]); + } + } + + protected virtual void OnDisable() + { + segmentClones.ForEach(Destroy); + segmentClones.Clear(); + + foreach (GameObject @object in new[] + { + start, + repeatedSegment, + end + }.Where(@object => @object != null)) + { + @object.SetActive(false); + } + } + + /// + /// Ensures the number of cloned elements matches the provided number of points. + /// + /// The points to create cloned elements for. + protected virtual void UpdateNumberOfClones(IReadOnlyList points) + { + if (repeatedSegment == null) + { + return; + } + + int targetCount = points.Count > 0 ? points.Count - 1 : 0; + for (int index = segmentClones.Count - 1; index >= targetCount; index--) + { + Destroy(segmentClones[index]); + segmentClones.RemoveAt(index); + } + + for (int index = segmentClones.Count; index < targetCount; index++) + { + segmentClones.Add(Instantiate(repeatedSegment, repeatedSegment.transform.parent)); + } + } + + /// + /// Updates the element for a specific point. + /// + /// All points to render. + /// The index of the point that is represented by the element. + /// Whether the element is part of the line or alternatively it's representing a point. + /// The to use for rendering. + protected virtual void UpdateElement(IReadOnlyList points, int pointsIndex, bool isPartOfLine, GameObject @object) + { + if (@object == null || 0 > pointsIndex || pointsIndex >= points.Count) + { + return; + } + + Vector3 targetPoint = points[pointsIndex]; + Vector3 otherPoint = pointsIndex + 1 < points.Count ? points[pointsIndex + 1] : points[pointsIndex - 1]; + Vector3 forward = otherPoint - targetPoint; + Vector3 position = isPartOfLine ? targetPoint + 0.5f * forward : targetPoint; + float scaleTarget = Mathf.Abs(Vector3.Distance(targetPoint, otherPoint)); + + @object.transform.position = position; + + if (!isPartOfLine) + { + return; + } + + @object.transform.forward = forward; + + Vector3 scale = @object.transform.lossyScale; + + for (int index = 0; index < 3; index++) + { + if (Math.Abs(scaleDirection[index]) >= float.Epsilon) + { + scale[index] = scaleDirection[index] * scaleTarget; + } + } + + @object.transform.SetGlobalScale(scale); + } + } +} \ No newline at end of file diff --git a/Scripts/Visual/PointsRenderer.cs.meta b/Scripts/Visual/PointsRenderer.cs.meta new file mode 100644 index 00000000..0945c50e --- /dev/null +++ b/Scripts/Visual/PointsRenderer.cs.meta @@ -0,0 +1,3 @@ +fileFormatVersion: 2 +guid: 255407672fbf4289a8950abfa476e0b0 +timeCreated: 1526406857 \ No newline at end of file