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clamp the color better

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LarsBrubaker 2021-02-01 20:28:51 -08:00 • committed by Lars Brubaker
parent 2a5365bb81
commit 2235e2aa84
1 changed files with 39 additions and 17 deletions
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56
MatterControlLib/CustomWidgets/ColorPicker/RadialColorPicker.cs
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@ -40,8 +40,7 @@ namespace MatterHackers.MatterControl.CustomWidgets.ColorPicker
{
public class RadialColorPicker : GuiWidget
{
private double colorAngle = 0;
private Vector2 unitTrianglePosition = new Vector2(1, .5);
private (double h, double s, double l) hsl;
private float alpha;
private Color downColor;
@ -76,13 +75,12 @@ namespace MatterHackers.MatterControl.CustomWidgets.ColorPicker
if ((color.red != color.green || color.green != color.blue || color.blue != 0)
&& (color.red != color.green || color.green != color.blue || color.blue != 255))
{
colorAngle = h * MathHelper.Tau;
hsl.h = h;
}
unitTrianglePosition.X = s;
unitTrianglePosition.Y = l;
hsl.s = s;
hsl.l = l;
alpha = color.Alpha0To1;
ClampTrianglePosition(ref unitTrianglePosition);
Invalidate();
}
@ -102,7 +100,7 @@ namespace MatterHackers.MatterControl.CustomWidgets.ColorPicker
{
get
{
return ColorF.FromHSL(colorAngle / MathHelper.Tau, unitTrianglePosition.X, unitTrianglePosition.Y, alpha).ToColor();
return ColorF.FromHSL(hsl.h, hsl.s, hsl.l, alpha).ToColor();
}
set
@ -120,13 +118,13 @@ namespace MatterHackers.MatterControl.CustomWidgets.ColorPicker
{
get
{
return ColorF.FromHSL(colorAngle / MathHelper.Tau, 1, .5).ToColor();
return ColorF.FromHSL(hsl.h, 1, .5).ToColor();
}
set
{
value.ToColorF().GetHSL(out double h, out _, out _);
colorAngle = h * MathHelper.Tau;
hsl.h = h;
}
}
@ -161,12 +159,16 @@ namespace MatterHackers.MatterControl.CustomWidgets.ColorPicker
graphics2D.Ring(center, RingRadius - RingWidth / 2, 1, Color.Black);
// draw the triangle outline
var colorAngle = hsl.h * MathHelper.Tau;
graphics2D.Line(GetTrianglePoint(0, InnerRadius, colorAngle), GetTrianglePoint(1, InnerRadius, colorAngle), Color.Black);
graphics2D.Line(GetTrianglePoint(1, InnerRadius, colorAngle), GetTrianglePoint(2, InnerRadius, colorAngle), Color.Black);
graphics2D.Line(GetTrianglePoint(2, InnerRadius, colorAngle), GetTrianglePoint(0, InnerRadius, colorAngle), Color.Black);
// draw the color circle on the triangle
var triangleColorCenter = TriangleToWidgetTransform(colorAngle).Transform(unitTrianglePosition);
var unitPosition = new Vector2(hsl.s, hsl.l);
unitPosition.Y = agg_basics.Clamp(unitPosition.Y, .5 - (1 - unitPosition.X) / 2, .5 + (1 - unitPosition.X) / 2);
var triangleColorCenter = TriangleToWidgetTransform().Transform(unitPosition);
graphics2D.Circle(triangleColorCenter, RingWidth / 2 - 2, new Color(SelectedColor, 255));
graphics2D.Ring(triangleColorCenter, RingWidth / 2 - 2, 2, Color.White);
@ -198,12 +200,14 @@ namespace MatterHackers.MatterControl.CustomWidgets.ColorPicker
{
downState = DownState.OnRing;
colorAngle = Math.Atan2(direction.Y, direction.X);
var colorAngle = Math.Atan2(direction.Y, direction.X);
if (colorAngle < 0)
{
colorAngle += MathHelper.Tau;
}
hsl.h = colorAngle / MathHelper.Tau;
Invalidate();
}
else
@ -213,7 +217,7 @@ namespace MatterHackers.MatterControl.CustomWidgets.ColorPicker
if (inside)
{
downState = DownState.OnTriangle;
unitTrianglePosition = position;
SetSLFromUnitPosition(position);
}
Invalidate();
@ -228,6 +232,21 @@ namespace MatterHackers.MatterControl.CustomWidgets.ColorPicker
base.OnMouseDown(mouseEvent);
}
private void SetSLFromUnitPosition(Vector2 position)
{
hsl.s = position.X;
hsl.l = position.Y;
/*
if (hsl.l > hsl.s)
{
}
else if (hsl.l < hsl.s)
agg_basics.Clamp(unitPosition.Y, .5 - (1 - unitPosition.X) / 2, .5 + (1 - unitPosition.X) / 2);
unitTrianglePosition = position;
*/
}
public override void OnMouseMove(MouseEventArgs mouseEvent)
{
var startColor = SelectedColor;
@ -238,17 +257,18 @@ namespace MatterHackers.MatterControl.CustomWidgets.ColorPicker
var center = new Vector2(Width / 2, Height / 2);
var direction = mouseEvent.Position - center;
colorAngle = Math.Atan2(direction.Y, direction.X);
var colorAngle = Math.Atan2(direction.Y, direction.X);
if (colorAngle < 0)
{
colorAngle += MathHelper.Tau;
}
hsl.h = colorAngle / MathHelper.Tau;
Invalidate();
break;
case DownState.OnTriangle:
unitTrianglePosition = WidgetToUnitTriangle(mouseEvent.Position).position;
SetSLFromUnitPosition(WidgetToUnitTriangle(mouseEvent.Position).position);
Invalidate();
break;
}
@ -315,6 +335,7 @@ namespace MatterHackers.MatterControl.CustomWidgets.ColorPicker
GL.Begin(BeginMode.Triangles);
GL.Color4(color.Red0To255, color.Green0To255, color.Blue0To255, color.Alpha0To255);
var colorAngle = hsl.h * MathHelper.Tau;
GL.Vertex2(GetTrianglePoint(0, radius, colorAngle, true));
GL.Color4(Color.White);
GL.Vertex2(GetTrianglePoint(1, radius, colorAngle, true));
@ -358,7 +379,7 @@ namespace MatterHackers.MatterControl.CustomWidgets.ColorPicker
return Vector2.Zero;
}
private Affine TriangleToWidgetTransform(double angle)
private Affine TriangleToWidgetTransform()
{
var center = new Vector2(Width / 2, Height / 2);
var leftSize = .5;
@ -370,7 +391,8 @@ namespace MatterHackers.MatterControl.CustomWidgets.ColorPicker
// center
total *= Affine.NewTranslation(-leftSize, -sizeToTop);
// rotate to correct color
total *= Affine.NewRotation(angle);
var colorAngle = hsl.h * MathHelper.Tau;
total *= Affine.NewRotation(colorAngle);
// scale to radius
total *= Affine.NewScaling(InnerRadius);
// move to center
@ -380,7 +402,7 @@ namespace MatterHackers.MatterControl.CustomWidgets.ColorPicker
private (bool inside, Vector2 position) WidgetToUnitTriangle(Vector2 widgetPosition)
{
var trianglePosition = TriangleToWidgetTransform(colorAngle)
var trianglePosition = TriangleToWidgetTransform()
.InverseTransform(widgetPosition);
bool changed = ClampTrianglePosition(ref trianglePosition);