VDH
105 lines
3.9 KiB
C#
105 lines
3.9 KiB
C#
// Animancer // https://kybernetik.com.au/animancer // Copyright 2021 Kybernetik //
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using UnityEngine;
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namespace Animancer.Examples
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{
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/// <summary>Simple mouse controls for orbiting the camera around a focal point.</summary>
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/// <remarks>
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/// Documentation: <see href="https://kybernetik.com.au/animancer/docs/examples/basics/scene-setup#orbit-controls">Orbit Controls</see>
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/// </remarks>
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/// https://kybernetik.com.au/animancer/api/Animancer.Examples/OrbitControls
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///
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[AddComponentMenu(Strings.ExamplesMenuPrefix + "Orbit Controls")]
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[HelpURL(Strings.DocsURLs.APIDocumentation + "." + nameof(Examples) + "/" + nameof(OrbitControls))]
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[ExecuteAlways]
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public sealed class OrbitControls : MonoBehaviour
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{
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/************************************************************************************************************************/
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[SerializeField] private Vector3 _FocalPoint = new Vector3(0, 1, 0);
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[SerializeField] private MouseButton _MouseButton = MouseButton.Right;
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[SerializeField] private Vector3 _Sensitivity = new Vector3(15, -10, -0.1f);
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private float _Distance;
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/************************************************************************************************************************/
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public enum MouseButton
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{
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Automatic = -1,
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Left = 0,
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Right = 1,
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Middle = 2,
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}
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/************************************************************************************************************************/
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private void Awake()
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{
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_Distance = Vector3.Distance(_FocalPoint, transform.position);
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transform.LookAt(_FocalPoint);
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}
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/************************************************************************************************************************/
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private void Update()
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{
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#if UNITY_EDITOR
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if (!UnityEditor.EditorApplication.isPlaying)
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{
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transform.LookAt(_FocalPoint);
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return;
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}
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#endif
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if (_MouseButton == MouseButton.Automatic || Input.GetMouseButton((int)_MouseButton))
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{
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var movement = new Vector2(
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Input.GetAxis("Mouse X"),
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Input.GetAxis("Mouse Y"));
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if (movement != default)
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{
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var euler = transform.localEulerAngles;
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euler.y += movement.x * _Sensitivity.x;
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euler.x += movement.y * _Sensitivity.y;
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if (euler.x > 180)
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euler.x -= 360;
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euler.x = Mathf.Clamp(euler.x, -80, 80);
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transform.localEulerAngles = euler;
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}
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}
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var zoom = Input.mouseScrollDelta.y * _Sensitivity.z;
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if (zoom != 0 &&
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Input.mousePosition.x >= 0 && Input.mousePosition.x <= Screen.width &&
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Input.mousePosition.y >= 0 && Input.mousePosition.y <= Screen.height)
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{
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_Distance *= 1 + zoom;
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}
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// Always update position even with no input in case the target is moving.
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UpdatePosition();
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}
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/************************************************************************************************************************/
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private void UpdatePosition()
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{
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transform.position = _FocalPoint - transform.forward * _Distance;
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}
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/************************************************************************************************************************/
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private void OnDrawGizmosSelected()
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{
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Gizmos.color = new Color(0.5f, 1, 0.5f, 1);
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Gizmos.DrawLine(transform.position, _FocalPoint);
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}
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/************************************************************************************************************************/
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}
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}
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