UnityEditor.TerrainSplatEditor.OnGUI C# (CSharp) Method

        private void OnGUI()
        {
            EditorGUIUtility.labelWidth = (base.position.width - 64f) - 20f;
            bool flag = true;
            this.m_ScrollPosition = EditorGUILayout.BeginVerticalScrollView(this.m_ScrollPosition, false, GUI.skin.verticalScrollbar, GUI.skin.scrollView, new GUILayoutOption[0]);
            flag &= this.ValidateTerrain();
            EditorGUI.BeginChangeCheck();
            GUILayout.BeginHorizontal(new GUILayoutOption[0]);
            string label = "";
            float alignmentOffset = 0f;
            switch (this.m_Terrain.materialType)
            {
                case Terrain.MaterialType.BuiltInStandard:
                    label = " Albedo (RGB)\nSmoothness (A)";
                    alignmentOffset = 15f;
                    break;

                case Terrain.MaterialType.BuiltInLegacyDiffuse:
                    label = "\n Diffuse (RGB)";
                    alignmentOffset = 15f;
                    break;

                case Terrain.MaterialType.BuiltInLegacySpecular:
                    label = "Diffuse (RGB)\n   Gloss (A)";
                    alignmentOffset = 12f;
                    break;

                case Terrain.MaterialType.Custom:
                    label = " \n  Splat";
                    alignmentOffset = 0f;
                    break;
            }
            TextureFieldGUI(label, ref this.m_Texture, alignmentOffset);
            TextureFieldGUI("\nNormal", ref this.m_NormalMap, -4f);
            GUILayout.FlexibleSpace();
            GUILayout.EndHorizontal();
            flag &= this.ValidateMainTexture(this.m_Texture);
            if (flag)
            {
                if (IsUsingMetallic(this.m_Terrain.materialType, this.m_Terrain.materialTemplate))
                {
                    EditorGUILayout.Space();
                    float labelWidth = EditorGUIUtility.labelWidth;
                    EditorGUIUtility.labelWidth = 75f;
                    this.m_Metallic = EditorGUILayout.Slider("Metallic", this.m_Metallic, 0f, 1f, new GUILayoutOption[0]);
                    EditorGUIUtility.labelWidth = labelWidth;
                }
                else if (IsUsingSpecular(this.m_Terrain.materialType, this.m_Terrain.materialTemplate))
                {
                    this.m_Specular = EditorGUILayout.ColorField("Specular", this.m_Specular, new GUILayoutOption[0]);
                }
                if (IsUsingSmoothness(this.m_Terrain.materialType, this.m_Terrain.materialTemplate) && !TextureUtil.HasAlphaTextureFormat(this.m_Texture.format))
                {
                    EditorGUILayout.Space();
                    float num3 = EditorGUIUtility.labelWidth;
                    EditorGUIUtility.labelWidth = 75f;
                    this.m_Smoothness = EditorGUILayout.Slider("Smoothness", this.m_Smoothness, 0f, 1f, new GUILayoutOption[0]);
                    EditorGUIUtility.labelWidth = num3;
                }
            }
            SplatSizeGUI(ref this.m_TileSize, ref this.m_TileOffset);
            bool flag2 = EditorGUI.EndChangeCheck();
            EditorGUILayout.EndScrollView();
            GUILayout.FlexibleSpace();
            GUILayout.BeginHorizontal(new GUILayoutOption[0]);
            GUILayout.FlexibleSpace();
            GUI.enabled = flag;
            GUILayoutOption[] options = new GUILayoutOption[] { GUILayout.MinWidth(100f) };
            if (GUILayout.Button(this.m_ButtonTitle, options))
            {
                this.ApplyTerrainSplat();
                base.Close();
                GUIUtility.ExitGUI();
            }
            GUI.enabled = true;
            GUILayout.EndHorizontal();
            if ((flag2 && flag) && (this.m_Index != -1))
            {
                this.ApplyTerrainSplat();
            }
        }