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Restrict player color choices to the hue-saturation plane.

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This commit is contained in:
Paul Chote
2021-04-10 22:29:41 +01:00
committed by teinarss
parent 4042d5b179
commit 560f1a6466
15 changed files with 285 additions and 516 deletions
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182
OpenRA.Mods.Common/Widgets/ColorMixerWidget.cs
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@@ -19,29 +19,22 @@ namespace OpenRA.Mods.Common.Widgets
{
public class ColorMixerWidget : Widget
{
public float STrim = 0.025f;
public float VTrim = 0.025f;
public event Action OnChange = () => { };
public float H { get; private set; }
public float S { get; private set; }
public float V { get; private set; }
float minSat, maxSat;
byte[] front, back;
Sheet mixerSheet;
Sprite mixerSprite;
bool isMoving;
bool update;
readonly object syncWorker = new object();
readonly object bufferSync = new object();
Thread workerThread;
bool workerAlive;
public ColorMixerWidget()
{
V = 1.0f;
}
float[] sRange = { 0.0f, 1.0f };
float[] vRange = { 0.0f, 1.0f };
public ColorMixerWidget() { }
public ColorMixerWidget(ColorMixerWidget other)
: base(other)
{
@@ -49,118 +42,45 @@ namespace OpenRA.Mods.Common.Widgets
H = other.H;
S = other.S;
V = other.V;
sRange = (float[])other.sRange.Clone();
vRange = (float[])other.vRange.Clone();
STrim = other.STrim;
VTrim = other.VTrim;
minSat = other.minSat;
maxSat = other.maxSat;
}
public void SetPaletteRange(float sMin, float sMax, float vMin, float vMax)
public void SetColorLimits(float minSaturation, float maxSaturation, float v)
{
sRange[0] = sMin + STrim;
sRange[1] = sMax - STrim;
vRange[0] = vMin + VTrim;
vRange[1] = vMax - VTrim;
minSat = minSaturation;
maxSat = maxSaturation;
V = v;
var rect = new Rectangle((int)(255 * sRange[0]), (int)(255 * (1 - vRange[1])), (int)(255 * (sRange[1] - sRange[0])) + 1, (int)(255 * (vRange[1] - vRange[0])) + 1);
mixerSprite = new Sprite(mixerSprite.Sheet, rect, TextureChannel.RGBA);
var buffer = new byte[4 * 256 * 256];
unsafe
{
// Generate palette in HSV
fixed (byte* cc = &buffer[0])
{
var c = (int*)cc;
for (var s = 0; s < 256; s++)
for (var h = 0; h < 256; h++)
(*(c + s * 256 + h)) = Color.FromAhsv(h / 255f, 1 - s / 255f, V).ToArgb();
}
}
var rect = new Rectangle(0, (int)(255 * (1 - maxSat)), 255, (int)(255 * (maxSat - minSat)) + 1);
mixerSprite = new Sprite(mixerSheet, rect, TextureChannel.RGBA);
mixerSheet.GetTexture().SetData(buffer, 256, 256);
}
public override void Initialize(WidgetArgs args)
{
base.Initialize(args);
sRange[0] += STrim;
sRange[1] -= STrim;
vRange[0] += VTrim;
vRange[1] -= VTrim;
// Bitmap data is generated in a background thread and then flipped
front = new byte[4 * 256 * 256];
back = new byte[4 * 256 * 256];
var rect = new Rectangle((int)(255 * sRange[0]), (int)(255 * (1 - vRange[1])), (int)(255 * (sRange[1] - sRange[0])) + 1, (int)(255 * (vRange[1] - vRange[0])) + 1);
var mixerSheet = new Sheet(SheetType.BGRA, new Size(256, 256));
mixerSheet.GetTexture().SetData(front, 256, 256);
mixerSprite = new Sprite(mixerSheet, rect, TextureChannel.RGBA);
GenerateBitmap();
}
void GenerateBitmap()
{
// Generating the selection bitmap is slow,
// so we do it in a background thread
lock (syncWorker)
{
update = true;
if (workerThread == null || !workerAlive)
{
workerThread = new Thread(GenerateBitmapWorker);
workerThread.Start();
}
}
}
void GenerateBitmapWorker()
{
lock (syncWorker)
workerAlive = true;
while (true)
{
float hue;
lock (syncWorker)
{
if (!update)
{
workerAlive = false;
break;
}
update = false;
// Take a local copy of the hue to generate to avoid tearing
hue = H;
}
unsafe
{
// Generate palette in HSV
fixed (byte* cc = &back[0])
{
var c = (int*)cc;
for (var v = 0; v < 256; v++)
for (var s = 0; s < 256; s++)
(*(c + (v * 256) + s)) = Color.FromAhsv(hue, s / 255f, (255 - v) / 255f).ToArgb();
}
}
lock (bufferSync)
{
var swap = front;
front = back;
back = swap;
}
}
mixerSheet = new Sheet(SheetType.BGRA, new Size(256, 256));
SetColorLimits(minSat, maxSat, V);
}
public override void Draw()
{
if (Monitor.TryEnter(bufferSync))
{
try
{
mixerSprite.Sheet.GetTexture().SetData(front, 256, 256);
}
finally
{
Monitor.Exit(bufferSync);
}
}
Game.Renderer.RgbaSpriteRenderer.DrawSprite(mixerSprite, RenderOrigin, new float2(RenderBounds.Size));
var sprite = ChromeProvider.GetImage("lobby-bits", "colorpicker");
@@ -172,17 +92,17 @@ namespace OpenRA.Mods.Common.Widgets
void SetValueFromPx(int2 xy)
{
var rb = RenderBounds;
var s = sRange[0] + xy.X * (sRange[1] - sRange[0]) / rb.Width;
var v = sRange[1] - xy.Y * (vRange[1] - vRange[0]) / rb.Height;
S = s.Clamp(sRange[0], sRange[1]);
V = v.Clamp(vRange[0], vRange[1]);
var h = xy.X * 1f / rb.Width;
var s = float2.Lerp(minSat, maxSat, 1 - xy.Y * 1f / rb.Height);
H = h.Clamp(0, 1f);
S = s.Clamp(minSat, maxSat);
}
int2 PxFromValue()
{
var rb = RenderBounds;
var x = RenderBounds.Width * (S - sRange[0]) / (sRange[1] - sRange[0]);
var y = RenderBounds.Height * (1 - (V - vRange[0]) / (vRange[1] - vRange[0]));
var x = RenderBounds.Width * H;
var y = RenderBounds.Height * (1 - (S - minSat) / (maxSat - minSat));
return new int2((int)x.Clamp(0, rb.Width), (int)y.Clamp(0, rb.Height));
}
@@ -223,30 +143,18 @@ namespace OpenRA.Mods.Common.Widgets
public Color Color => Color.FromAhsv(H, S, V);
public void Set(float hue)
{
if (H != hue)
{
H = hue;
GenerateBitmap();
OnChange();
}
}
/// <summary>
/// Set the color picker to nearest valid color to the given value.
/// The saturation and brightness may be adjusted.
/// </summary>
public void Set(Color color)
{
color.ToAhsv(out _, out var h, out var s, out var v);
color.ToAhsv(out _, out var h, out var s, out _);
if (H != h || S != s || V != v)
if (H != h || S != s)
{
if (H != h)
{
H = h;
GenerateBitmap();
}
S = s.Clamp(sRange[0], sRange[1]);
V = v.Clamp(vRange[0], vRange[1]);
H = h;
S = s.Clamp(minSat, maxSat);
OnChange();
}
}