forked from BilalY/Rasagar
253 lines
10 KiB
C#
253 lines
10 KiB
C#
using System;
|
|
using JetBrains.Annotations;
|
|
using UnityEngine;
|
|
using UnityEngine.Experimental.Rendering;
|
|
|
|
namespace UnityEditor.Rendering.HighDefinition
|
|
{
|
|
// TODO: Should be cleaned up and put into CoreRP/Editor
|
|
sealed class TrackballUIDrawer
|
|
{
|
|
static readonly int s_ThumbHash = "colorWheelThumb".GetHashCode();
|
|
static GUIStyle s_WheelThumb;
|
|
static Vector2 s_WheelThumbSize;
|
|
static Material s_Material;
|
|
static bool s_MaterialConfigured;
|
|
|
|
Func<Vector4, Vector3> m_ComputeFunc;
|
|
bool m_ResetState;
|
|
Vector2 m_CursorPos;
|
|
|
|
public void OnGUI(SerializedProperty property, [CanBeNull] SerializedProperty overrideState, GUIContent title, Func<Vector4, Vector3> computeFunc)
|
|
{
|
|
if (property.propertyType != SerializedPropertyType.Vector4)
|
|
{
|
|
Debug.LogWarning("TrackballUIDrawer requires a Vector4 property");
|
|
return;
|
|
}
|
|
|
|
if (!s_MaterialConfigured)
|
|
{
|
|
// Initialization of materials with Shader.Find from static constructors is not allowed.
|
|
s_Material = new Material(Shader.Find("Hidden/HD PostProcessing/Editor/Trackball")) { hideFlags = HideFlags.HideAndDontSave };
|
|
s_MaterialConfigured = true;
|
|
}
|
|
|
|
m_ComputeFunc = computeFunc;
|
|
var value = property.vector4Value;
|
|
|
|
using (new EditorGUILayout.VerticalScope())
|
|
{
|
|
bool isOverridden = overrideState?.boolValue ?? true;
|
|
using (new EditorGUI.DisabledScope(!isOverridden))
|
|
DrawWheel(ref value, isOverridden);
|
|
|
|
DrawLabelAndOverride(title, overrideState);
|
|
}
|
|
|
|
if (m_ResetState)
|
|
{
|
|
value = new Vector4(1f, 1f, 1f, 0f);
|
|
m_ResetState = false;
|
|
}
|
|
|
|
property.vector4Value = value;
|
|
}
|
|
|
|
void DrawWheel(ref Vector4 value, bool overrideState)
|
|
{
|
|
var wheelRect = GUILayoutUtility.GetAspectRect(1f);
|
|
float size = wheelRect.width;
|
|
float hsize = size / 2f;
|
|
float radius = 0.38f * size;
|
|
|
|
Vector3 hsv;
|
|
Color.RGBToHSV(value, out hsv.x, out hsv.y, out hsv.z);
|
|
float offset = value.w;
|
|
|
|
// Thumb
|
|
var thumbPos = Vector2.zero;
|
|
float theta = hsv.x * (Mathf.PI * 2f);
|
|
thumbPos.x = Mathf.Cos(theta + (Mathf.PI / 2f));
|
|
thumbPos.y = Mathf.Sin(theta - (Mathf.PI / 2f));
|
|
thumbPos *= hsv.y * radius;
|
|
|
|
// Draw the wheel
|
|
if (Event.current.type == EventType.Repaint)
|
|
{
|
|
// Style init
|
|
if (s_WheelThumb == null)
|
|
{
|
|
s_WheelThumb = new GUIStyle("ColorPicker2DThumb");
|
|
s_WheelThumbSize = new Vector2(
|
|
!Mathf.Approximately(s_WheelThumb.fixedWidth, 0f) ? s_WheelThumb.fixedWidth : s_WheelThumb.padding.horizontal,
|
|
!Mathf.Approximately(s_WheelThumb.fixedHeight, 0f) ? s_WheelThumb.fixedHeight : s_WheelThumb.padding.vertical
|
|
);
|
|
}
|
|
|
|
// Retina support
|
|
float scale = EditorGUIUtility.pixelsPerPoint;
|
|
|
|
// Wheel texture
|
|
var oldRT = RenderTexture.active;
|
|
var rt = RenderTexture.GetTemporary((int)(size * scale), (int)(size * scale), 0, GraphicsFormat.R8G8B8A8_SRGB);
|
|
s_Material.SetFloat("_Offset", offset);
|
|
s_Material.SetFloat("_DisabledState", overrideState && GUI.enabled ? 1f : 0.5f);
|
|
s_Material.SetVector("_Resolution", new Vector2(size * scale, size * scale / 2f));
|
|
Graphics.Blit(null, rt, s_Material, EditorGUIUtility.isProSkin ? 0 : 1);
|
|
RenderTexture.active = oldRT;
|
|
|
|
GUI.DrawTexture(wheelRect, rt);
|
|
RenderTexture.ReleaseTemporary(rt);
|
|
|
|
var thumbSize = s_WheelThumbSize;
|
|
var thumbSizeH = thumbSize / 2f;
|
|
s_WheelThumb.Draw(new Rect(wheelRect.x + hsize + thumbPos.x - thumbSizeH.x, wheelRect.y + hsize + thumbPos.y - thumbSizeH.y, thumbSize.x, thumbSize.y), false, false, false, false);
|
|
}
|
|
|
|
// Input
|
|
var bounds = wheelRect;
|
|
bounds.x += hsize - radius;
|
|
bounds.y += hsize - radius;
|
|
bounds.width = bounds.height = radius * 2f;
|
|
hsv = GetInput(bounds, hsv, thumbPos, radius);
|
|
|
|
|
|
Vector3Int displayHSV = new Vector3Int(Mathf.RoundToInt(hsv.x * 360), Mathf.RoundToInt(hsv.y * 100), 100);
|
|
bool displayInputFields = EditorGUIUtility.currentViewWidth > 600;
|
|
if (displayInputFields)
|
|
{
|
|
var valuesRect = GUILayoutUtility.GetRect(1f, 17f);
|
|
valuesRect.width /= 5f;
|
|
float textOff = valuesRect.width * 0.2f;
|
|
EditorGUI.LabelField(valuesRect, "Y");
|
|
valuesRect.x += textOff;
|
|
offset = EditorGUI.DelayedFloatField(valuesRect, offset);
|
|
offset = Mathf.Clamp(offset, -1.0f, 1.0f);
|
|
valuesRect.x += valuesRect.width + valuesRect.width * 0.05f;
|
|
EditorGUI.LabelField(valuesRect, "H");
|
|
valuesRect.x += textOff;
|
|
displayHSV.x = EditorGUI.DelayedIntField(valuesRect, displayHSV.x);
|
|
hsv.x = displayHSV.x / 360.0f;
|
|
valuesRect.x += valuesRect.width + valuesRect.width * 0.05f;
|
|
EditorGUI.LabelField(valuesRect, "S");
|
|
valuesRect.x += textOff;
|
|
displayHSV.y = EditorGUI.DelayedIntField(valuesRect, displayHSV.y);
|
|
displayHSV.y = Mathf.Clamp(displayHSV.y, 0, 100);
|
|
hsv.y = displayHSV.y / 100.0f;
|
|
valuesRect.x += valuesRect.width + valuesRect.width * 0.05f;
|
|
EditorGUI.LabelField(valuesRect, "V");
|
|
valuesRect.x += textOff;
|
|
GUI.enabled = false;
|
|
EditorGUI.IntField(valuesRect, 100);
|
|
GUI.enabled = true;
|
|
}
|
|
|
|
|
|
value = Color.HSVToRGB(hsv.x, hsv.y, 1f);
|
|
value.w = offset;
|
|
|
|
// Offset
|
|
var sliderRect = GUILayoutUtility.GetRect(1f, 17f);
|
|
float padding = sliderRect.width * 0.05f; // 5% padding
|
|
sliderRect.xMin += padding;
|
|
sliderRect.xMax -= padding;
|
|
value.w = GUI.HorizontalSlider(sliderRect, value.w, -1f, 1f);
|
|
|
|
if (m_ComputeFunc == null)
|
|
return;
|
|
|
|
// Values
|
|
var displayValue = m_ComputeFunc(value);
|
|
using (new EditorGUI.DisabledGroupScope(true))
|
|
{
|
|
var valuesRect = GUILayoutUtility.GetRect(1f, 17f);
|
|
valuesRect.width /= (displayInputFields ? 4f : 3.0f);
|
|
if (displayInputFields)
|
|
{
|
|
GUI.Label(valuesRect, "RGB Value:", EditorStyles.centeredGreyMiniLabel);
|
|
valuesRect.x += valuesRect.width;
|
|
}
|
|
GUI.Label(valuesRect, displayValue.x.ToString("F2"), EditorStyles.centeredGreyMiniLabel);
|
|
valuesRect.x += valuesRect.width;
|
|
GUI.Label(valuesRect, displayValue.y.ToString("F2"), EditorStyles.centeredGreyMiniLabel);
|
|
valuesRect.x += valuesRect.width;
|
|
GUI.Label(valuesRect, displayValue.z.ToString("F2"), EditorStyles.centeredGreyMiniLabel);
|
|
valuesRect.x += valuesRect.width;
|
|
}
|
|
}
|
|
|
|
void DrawLabelAndOverride(GUIContent title, SerializedProperty overrideState)
|
|
{
|
|
// Title
|
|
var areaRect = GUILayoutUtility.GetRect(1f, 17f);
|
|
var labelSize = EditorStyles.miniLabel.CalcSize(title);
|
|
var labelRect = new Rect(areaRect.x + areaRect.width / 2 - labelSize.x / 2, areaRect.y, labelSize.x, labelSize.y);
|
|
GUI.Label(labelRect, title, EditorStyles.miniLabel);
|
|
|
|
// Override checkbox
|
|
if (overrideState != null)
|
|
{
|
|
var overrideRect = new Rect(labelRect.x - 17, labelRect.y + 3, 17f, 17f);
|
|
overrideState.boolValue = GUI.Toggle(overrideRect, overrideState.boolValue,
|
|
EditorGUIUtility.TrTextContent("", "Override this setting for this volume."),
|
|
CoreEditorStyles.smallTickbox);
|
|
}
|
|
}
|
|
|
|
Vector3 GetInput(Rect bounds, Vector3 hsv, Vector2 thumbPos, float radius)
|
|
{
|
|
var e = Event.current;
|
|
var id = GUIUtility.GetControlID(s_ThumbHash, FocusType.Passive, bounds);
|
|
var mousePos = e.mousePosition;
|
|
|
|
if (e.type == EventType.MouseDown && GUIUtility.hotControl == 0 && bounds.Contains(mousePos))
|
|
{
|
|
if (e.button == 0)
|
|
{
|
|
var center = new Vector2(bounds.x + radius, bounds.y + radius);
|
|
float dist = Vector2.Distance(center, mousePos);
|
|
|
|
if (dist <= radius)
|
|
{
|
|
e.Use();
|
|
m_CursorPos = new Vector2(thumbPos.x + radius, thumbPos.y + radius);
|
|
GUIUtility.hotControl = id;
|
|
GUI.changed = true;
|
|
}
|
|
}
|
|
else if (e.button == 1)
|
|
{
|
|
e.Use();
|
|
GUI.changed = true;
|
|
m_ResetState = true;
|
|
}
|
|
}
|
|
else if (e.type == EventType.MouseDrag && e.button == 0 && GUIUtility.hotControl == id)
|
|
{
|
|
e.Use();
|
|
GUI.changed = true;
|
|
m_CursorPos += e.delta * 0.2f; // Sensitivity
|
|
GetWheelHueSaturation(m_CursorPos.x, m_CursorPos.y, radius, out hsv.x, out hsv.y);
|
|
}
|
|
else if (e.rawType == EventType.MouseUp && e.button == 0 && GUIUtility.hotControl == id)
|
|
{
|
|
e.Use();
|
|
GUIUtility.hotControl = 0;
|
|
}
|
|
|
|
return hsv;
|
|
}
|
|
|
|
void GetWheelHueSaturation(float x, float y, float radius, out float hue, out float saturation)
|
|
{
|
|
float dx = (x - radius) / radius;
|
|
float dy = (y - radius) / radius;
|
|
float d = Mathf.Sqrt(dx * dx + dy * dy);
|
|
hue = Mathf.Atan2(dx, -dy);
|
|
hue = 1f - ((hue > 0) ? hue : (Mathf.PI * 2f) + hue) / (Mathf.PI * 2f);
|
|
saturation = Mathf.Clamp01(d);
|
|
}
|
|
}
|
|
}
|