VisionUtility.GetColorBlindSafePalette

Parameters

Returns

Sitemap Jumlah warna yang tidak ambigu dalam palet.int The number of unambiguous colors in the palette.

Description

Mendapatkan palet warna yang harus dibedakan untuk penglihatan normal, deuteranopia, protanopia, dan tritanopia.

Set warna dari mana untuk menggambar, bersama dengan nilai-nilai luminance mereka yang dirasakan.

Allocate ukuran palet Anda sebelum melewati metode ini untuk menentukan berapa banyak warna yang Anda butuhkan. Nilai pengembalian menunjukkan berapa banyak warna ambigu ada di palet. Jika nilai ini kurang dari ukuran palet, maka palet mengulangi warna agar.

Jendela untuk menonton pratinjau yang harus dibedakan untuk sebagian besar kondisi penglihatan.

Tambahkan skrip berikut ke Assets/Editor sebagai ColorSwatchExample.cs dan arahkan ke jendela opsi menu -> Contoh Swatch warna.

using UnityEditor;
using UnityEngine;
using UnityEngine.Accessibility;

public class ColorSwatchExample : EditorWindow
{
    // size of swatch background textures to generate
    private const int k_SwatchTextureSize = 16;
    // the maximum number of swatches for this example
    private const int k_MaxPaletteSize = 10;

    [MenuItem("Window/Color Swatch Example")]
    private static void CreateWindow()
    {
        var window = GetWindow<ColorSwatchExample>();
        window.position = new Rect(0f, 0f, 400f, 80f);
    }

    // the background textures to use for the swatches
    private Texture2D[] m_SwatchBackgrounds = new Texture2D[k_MaxPaletteSize];

    // the desired number of swatches
    [SerializeField]
    private int m_PaletteSize = 8;
    // the range of desired luminance values
    [SerializeField]
    private Vector2 m_DesiredLuminance = new Vector2(0.2f, 0.9f);
    // the colors obtained
    [SerializeField]
    private Color[] m_Palette;
    // the number of unique colors in the palette before they repeat
    [SerializeField]
    private int m_NumUniqueColors;

    // create swatch background textures when window first opens
    protected virtual void OnEnable()
    {
        titleContent = new GUIContent("Color Swatches");

        // create background swatches with different patterns for repeated colors
        m_SwatchBackgrounds[0] = CreateSwatchBackground(k_SwatchTextureSize, 0, 0);
        m_SwatchBackgrounds[1] = CreateSwatchBackground(k_SwatchTextureSize, 1, 4);
        m_SwatchBackgrounds[2] = CreateSwatchBackground(k_SwatchTextureSize, 1, 3);
        m_SwatchBackgrounds[3] = CreateSwatchBackground(k_SwatchTextureSize, 6, 1);
        m_SwatchBackgrounds[4] = CreateSwatchBackground(k_SwatchTextureSize, 4, 3);
        m_SwatchBackgrounds[5] = CreateSwatchBackground(k_SwatchTextureSize, 6, 6);
        m_SwatchBackgrounds[6] = CreateSwatchBackground(k_SwatchTextureSize, 4, 2);
        m_SwatchBackgrounds[7] = CreateSwatchBackground(k_SwatchTextureSize, 6, 4);
        m_SwatchBackgrounds[8] = CreateSwatchBackground(k_SwatchTextureSize, 2, 5);
        m_SwatchBackgrounds[9] = CreateSwatchBackground(k_SwatchTextureSize, 1, 2);

        UpdatePalette();
    }

    // clean up textures when window is closed
    protected virtual void OnDisable()
    {
        for (int i = 0, count = m_SwatchBackgrounds.Length; i < count; ++i)
            DestroyImmediate(m_SwatchBackgrounds[i]);
    }

    protected virtual void OnGUI()
    {
        // input desired number of colors and luminance values
        EditorGUI.BeginChangeCheck();

        m_PaletteSize = EditorGUILayout.IntSlider("Palette Size", m_PaletteSize, 0, k_MaxPaletteSize);

        float min = m_DesiredLuminance.x;
        float max = m_DesiredLuminance.y;
        EditorGUILayout.MinMaxSlider("Luminance Range", ref min, ref max, 0f, 1f);
        m_DesiredLuminance = new Vector2(min, max);

        if (EditorGUI.EndChangeCheck())
        {
            UpdatePalette();
        }

        // display warning message if parameters are out of range
        if (m_NumUniqueColors == 0)
        {
            string warningMessage = "Unable to generate any unique colors with the specified luminance requirements.";
            EditorGUILayout.HelpBox(warningMessage, MessageType.Warning);
        }
        // otherwise display swatches in a row
        else
        {
            using (new GUILayout.HorizontalScope())
            {
                GUILayout.FlexibleSpace();
                Color oldColor = GUI.color;

                int swatchBackgroundIndex = 0;
                for (int i = 0; i < m_PaletteSize; ++i)
                {
                    // change swatch background pattern when reaching a repeated color
                    if (i > 0 && i % m_NumUniqueColors == 0)
                        ++swatchBackgroundIndex;

                    Rect rect = GUILayoutUtility.GetRect(k_SwatchTextureSize * 2, k_SwatchTextureSize * 2);
                    rect.width = k_SwatchTextureSize * 2;

                    GUI.color = m_Palette[i];
                    GUI.DrawTexture(rect, m_SwatchBackgrounds[swatchBackgroundIndex], ScaleMode.ScaleToFit, true);
                }

                GUI.color = oldColor;
                GUILayout.FlexibleSpace();
            }
        }
    }

    // create a white texture with some pixels discarded to make a pattern
    private Texture2D CreateSwatchBackground(int size, int discardPixelCount, int discardPixelStep)
    {
        var swatchBackground = new Texture2D(size, size);
        swatchBackground.hideFlags = HideFlags.HideAndDontSave;
        swatchBackground.filterMode = FilterMode.Point;

        var pixels = swatchBackground.GetPixels32();
        int counter = 0;
        bool discard = false;
        for (int i = 0, count = pixels.Length; i < count; ++i)
        {
            pixels[i] = new Color32(255, 255, 255, (byte)(discard ? 0 : 255));
            ++counter;
            if (discard && counter == discardPixelCount)
            {
                discard = false;
                counter = 0;
            }
            else if (!discard && counter == discardPixelStep)
            {
                discard = true;
                counter = 0;
            }
        }
        swatchBackground.SetPixels32(pixels);

        swatchBackground.Apply();
        return swatchBackground;
    }

    // request new palette
    private void UpdatePalette()
    {
        m_Palette = new Color[m_PaletteSize];
        m_NumUniqueColors =
            VisionUtility.GetColorBlindSafePalette(m_Palette, m_DesiredLuminance.x, m_DesiredLuminance.y);
    }
}