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-// Amplify Shader Editor - Visual Shader Editing Tool
-// Copyright (c) Amplify Creations, Lda <info@amplify.pt>
-//
-// Donated by BinaryCats
-// https://forum.unity.com/threads/best-tool-asset-store-award-amplify-shader-editor-node-based-shader-creation-tool.430959/page-60#post-3414465
-//////////////////////
-// README / HOW TO USE
-//////////////////////
-// Examples:
-//
-// Floats:
-//
-// x Equals value
-// EditableIf( _float1, Equalto, 1)
-// This will allow the value to be edited, if the property _float1 is equal to 1. (_float1==1)
-// Note: NotEqualTo is also a valid argument which will do the opposite of this example.EditableIf(_float1, NotEqualTo, 1) (NotEqualTo != 1)
-//
-// x Greater than value
-// EditableIf(_Float1,GreaterThan,1)
-// This will allow the value to be edited if the property _float1 is Greater than 1. (_float1>1)
-//
-// x Greater Than Or Equal to value
-// EditableIf(_Float1,GreaterThanOrEqualTo,1)
-// This will allow the value to be edited if the property _float1 is Greater than or equal to 1. (_float1>=1)
-//
-//
-// x Less Than value
-// EditableIf(_Float1,LessThan,1)
-// This will allow the value to be edited if the property _float1 is Less than 1. (_float1<1)
-//
-// x Less Than Or Equal to value
-// EditableIf(_Float1,LessThanOrEqualTo,1)
-// This will allow the value to be edited if the property _float1 is Less than or equal to 1. (_float1<=1)
-//
-//
-// Colour:
-//
-// x Equals r,g,b,a
-// EditableIf(_Color0,EqualTo,255,255,255,255)
-// This will allow the value to be edited, if the property _Color0 R,G,B and A value all Equal 255. (_Color0.R==255 && _Color0.G==255 & _Color0.B == 255 && _Color0.A == 255)
-//
-// x Equals alpha
-// EditableIf(_Color0,EqualTo,null,null,null,255)
-// This will allow the value to be edited, if the property _Color0 Alpha value is Equal to 255. (_Color0.A == 255)
-//
-// a Greater than blue
-// EditableIf(_Color0,GreaterThan,null,null,125)
-// This will allow the value to be edited, if the property _Color0 Blue value is Greater Than 125. (_Color0.B > 125)
-// Note: as I do not want to check the Red or Green Values, i have entered "null" for the parameter
-// Note: I have not inputted a value to check for Alpha, as i do not want to check it. Simularly, if I wanted to Only check the Red Value I could have used EditableIf(_Color0,GreaterThan,125)
-//
-// Like wise with floats GreaterThanOrEqualTo, LessThan, LessThanOrEqualTo
-//
-// Vector:
-// Vector Checks work the same as colour checks
-//
-// Texture:
-// x Does Not have a Texture
-// EditableIf(_TextureSample0,Equals,null)
-// This will allow the value to be edited, if the property _TextureSample0 does NOT have a texture
-//
-// x Does have a Texture
-// EditableIf(_TextureSample0,NotEqualTo,null)
-// This will allow the value to be edited, if the property _TextureSample0 does have a texture
-
-using UnityEngine;
-using UnityEditor;
-using System;
-
-public enum ComparisonOperators
-{
- EqualTo, NotEqualTo, GreaterThan, LessThan, EqualsOrGreaterThan, EqualsOrLessThan, ContainsFlags,
- DoesNotContainsFlags
-}
-
-public class EditableIf : MaterialPropertyDrawer
-{
- ComparisonOperators op;
- string FieldName = "";
- object ExpectedValue;
- bool InputError;
- public EditableIf()
- {
- InputError = true;
- }
- public EditableIf( object fieldname, object comparison, object expectedvalue )
- {
- if( expectedvalue.ToString().ToLower() == "true" )
- {
- expectedvalue = (System.Single)1;
- }
- else if( expectedvalue.ToString().ToLower() == "false" )
- {
- expectedvalue = (System.Single)0;
-
- }
- Init( fieldname, comparison, expectedvalue );
-
- }
- public EditableIf( object fieldname, object comparison, object expectedvaluex, object expectedvaluey )
- {
- float? x = expectedvaluex as float?;
- float? y = expectedvaluey as float?;
- float? z = float.NegativeInfinity;
- float? w = float.NegativeInfinity;
- x = GetVectorValue( x );
- y = GetVectorValue( y );
-
- Init( fieldname, comparison, new Vector4( x.Value, y.Value, z.Value, w.Value ) );
- }
- public EditableIf( object fieldname, object comparison, object expectedvaluex, object expectedvaluey, object expectedvaluez )
- {
- float? x = expectedvaluex as float?;
- float? y = expectedvaluey as float?;
- float? z = expectedvaluez as float?;
- float? w = float.NegativeInfinity;
- x = GetVectorValue( x );
- y = GetVectorValue( y );
- z = GetVectorValue( z );
-
- Init( fieldname, comparison, new Vector4( x.Value, y.Value, z.Value, w.Value ) );
-
- }
- public EditableIf( object fieldname, object comparison, object expectedvaluex, object expectedvaluey, object expectedvaluez, object expectedvaluew )
- {
- var x = expectedvaluex as float?;
- var y = expectedvaluey as float?;
- var z = expectedvaluez as float?;
- var w = expectedvaluew as float?;
- x = GetVectorValue( x );
- y = GetVectorValue( y );
- z = GetVectorValue( z );
- w = GetVectorValue( w );
-
- Init( fieldname, comparison, new Vector4( x.Value, y.Value, z.Value, w.Value ) );
-
- }
-
- private void Init( object fieldname, object comparison, object expectedvalue )
- {
- FieldName = fieldname.ToString();
- var names = Enum.GetNames( typeof( ComparisonOperators ) );
- var name = comparison.ToString().ToLower().Replace( " ", "" );
-
- for( int i = 0; i < names.Length; i++ )
- {
- if( names[ i ].ToLower() == name )
- {
- op = (ComparisonOperators)i;
- break;
- }
- }
-
- ExpectedValue = expectedvalue;
- }
-
- private static float? GetVectorValue( float? x )
- {
- if( x.HasValue == false )
- {
- x = float.NegativeInfinity;
- }
-
- return x;
- }
-
- // Draw the property inside the given rect
- public override void OnGUI( Rect position, MaterialProperty prop, String label, MaterialEditor editor )
- {
- if( InputError )
- {
- EditorGUI.LabelField( position, "EditableIf Attribute Error: Input parameters are invalid!" );
- return;
- }
- var LHSprop = MaterialEditor.GetMaterialProperty( prop.targets, FieldName );
- if( string.IsNullOrEmpty( LHSprop.name ) )
- {
- LHSprop = MaterialEditor.GetMaterialProperty( prop.targets, "_" + FieldName.Replace( " ", "" ) );
- if( string.IsNullOrEmpty( LHSprop.name ) )
- {
- EditorGUI.LabelField( position, "EditableIf Attribute Error: " + FieldName + " Does not exist!" );
- return;
- }
- }
- object LHSVal = null;
-
- bool test = false;
- switch( LHSprop.type )
- {
- case MaterialProperty.PropType.Color:
- case MaterialProperty.PropType.Vector:
- LHSVal = LHSprop.type == MaterialProperty.PropType.Color ? (Vector4)LHSprop.colorValue : LHSprop.vectorValue;
- var v4 = ExpectedValue as Vector4?;
- v4 = v4.HasValue ? v4 : new Vector4( (System.Single)ExpectedValue, float.NegativeInfinity, float.NegativeInfinity, float.NegativeInfinity );
-
- if( LHSprop.type == MaterialProperty.PropType.Color )
- {
- test = VectorCheck( (Vector4)LHSVal, op, v4 / 255 );
-
- }
- else
- test = VectorCheck( (Vector4)LHSVal, op, v4 );
- break;
- case MaterialProperty.PropType.Range:
- case MaterialProperty.PropType.Float:
- LHSVal = LHSprop.floatValue;
- test = ( Check( LHSVal, op, ExpectedValue ) );
- break;
- case MaterialProperty.PropType.Texture:
- LHSVal = LHSprop.textureValue;
- test = ( CheckObject( LHSVal, op, ExpectedValue ) );
- break;
- }
-
- GUI.enabled = test;
- editor.DefaultShaderProperty( position, prop, label );
- GUI.enabled = true;
- }
-
- private bool VectorCheck( Vector4 LHS, ComparisonOperators op, object expectedValue )
- {
- var RHS = (Vector4)expectedValue;
- if( RHS.x != float.NegativeInfinity )
- {
- if( !Check( LHS.x, op, RHS.x ) )
- return false;
- }
- if( RHS.y != float.NegativeInfinity )
- {
- if( !Check( LHS.y, op, RHS.y ) )
- return false;
- }
- if( RHS.z != float.NegativeInfinity )
- {
- if( !Check( LHS.z, op, RHS.z ) )
- return false;
- }
- if( RHS.w != float.NegativeInfinity )
- {
- if( !Check( LHS.w, op, RHS.w ) )
- return false;
- }
-
- return true;
- }
-
- protected bool Check( object LHS, ComparisonOperators op, object RHS )
- {
- if( !( LHS is IComparable ) || !( RHS is IComparable ) )
- throw new Exception( "Check using non basic type" );
-
- switch( op )
- {
- case ComparisonOperators.EqualTo:
- return ( (IComparable)LHS ).CompareTo( RHS ) == 0;
-
- case ComparisonOperators.NotEqualTo:
- return ( (IComparable)LHS ).CompareTo( RHS ) != 0;
-
- case ComparisonOperators.EqualsOrGreaterThan:
- return ( (IComparable)LHS ).CompareTo( RHS ) >= 0;
-
- case ComparisonOperators.EqualsOrLessThan:
- return ( (IComparable)LHS ).CompareTo( RHS ) <= 0;
-
- case ComparisonOperators.GreaterThan:
- return ( (IComparable)LHS ).CompareTo( RHS ) > 0;
-
- case ComparisonOperators.LessThan:
- return ( (IComparable)LHS ).CompareTo( RHS ) < 0;
- case ComparisonOperators.ContainsFlags:
- return ( (int)LHS & (int)RHS ) != 0; // Dont trust LHS values, it has been casted to a char and then to an int again, first bit will be the sign
- case ComparisonOperators.DoesNotContainsFlags:
- return ( ( (int)LHS & (int)RHS ) == (int)LHS ); // Dont trust LHS values, it has been casted to a char and then to an int again, first bit will be the sign
-
- default:
- break;
- }
- return false;
- }
- private bool CheckObject( object LHS, ComparisonOperators comparasonOperator, object RHS )
- {
- switch( comparasonOperator )
- {
- case ComparisonOperators.EqualTo:
- return ( LHS == null );
-
- case ComparisonOperators.NotEqualTo:
- return ( LHS != null );
- }
- return true;
- }
-
-}