/// <summary>
/// Draws specific divisions on the dial face
/// </summary>
/// <param name="canvas">Control's canvas</param>
/// <param name="dialFace">Info about the dial face</param>
/// <param name="divisionCount">Total count of divisions</param>
/// <param name="divisionLength">Length of the single division</param>
/// <param name="divisionColor">Color of the single division</param>
private void DrawDivision(
PaintEventArgs canvas,
DialFaceInfo dialFace,
int divisionCount,
int divisionLength,
Color divisionColor)
{
var additionToLength = (dialFace.Diameter / 2) - divisionLength;
var currentAngle = 0.0;
var divisionPen = new Pen(divisionColor, divisionThickness);
for (int i = 0; i < divisionCount; ++i)
{
var firstPoint = this.ConvertPolarToCartesian(
additionToLength,
currentAngle,
new Point(dialFace.CenterX, dialFace.CenterY));
var secondPoint = this.ConvertPolarToCartesian(
additionToLength + divisionLength,
currentAngle,
new Point(dialFace.CenterX, dialFace.CenterY));
canvas.Graphics.DrawLine(divisionPen, firstPoint, secondPoint);
currentAngle += 2 * Math.PI / divisionCount;
}
}
/// <summary>
/// Draws all types of divisions on the dial face
/// </summary>
/// <param name="canvas">Control's canvas</param>
/// <param name="dialFace">Info about the dial face</param>
protected void DrawAllDivisions(PaintEventArgs canvas, DialFaceInfo dialFace)
{
// I don't know how to fix arrow overlapping without crutches
this.DrawDivision(
canvas,
dialFace,
60,
dialFace.Diameter / minuteDivisionsLengthPart,
this.minuteDivisionColor);
// For "12", "3", "6", "9" hours
this.DrawDivision(
canvas,
dialFace,
4,
dialFace.Diameter / hourMultipleOfThreeLengthPart,
this.hourDivisionColor);
this.DrawDivision(
canvas,
dialFace,
12,
dialFace.Diameter / hourDivisionsLengthPart,
this.hourDivisionColor);
}
/// <summary>
/// Draws a bold dot where the arrows connect to each other
/// </summary>
/// <param name="canvas">Control canvas</param>
/// <param name="dialFace">Properties of the dial face</param>
protected void DrawPointOfAttachment(
PaintEventArgs canvas,
DialFaceInfo dialFace)
{
var pointDiameter =
dialFace.Diameter / pointOfAttachmentDiameterPart;
var pointBrush = new SolidBrush(this.pointOfAttachmentColor);
canvas.Graphics.FillEllipse(
pointBrush,
dialFace.CenterX - (pointDiameter / 2),
dialFace.CenterY - (pointDiameter / 2),
pointDiameter,
pointDiameter);
}
/// <summary>
/// Draws arrows of the watch
/// </summary>
/// <param name="canvas">Control canvas</param>
/// <param name="dialFace">Parameters of the dial face</param>
protected void DrawArrows(PaintEventArgs canvas, DialFaceInfo dialFace)
{
// TODO: Implement smooth moving of the arrows
var hourArrowLength = dialFace.Diameter / hourArrowLengthPart;
var minuteArrowLength = dialFace.Diameter / minuteArrowLengthPart;
var secondArrowLength = dialFace.Diameter / secondArrowLengthPart;
var secondArrowCounterweightLength = dialFace.Diameter / secondArrowCounterweightPart;
double hourArrowAngle = 2 * Math.PI / 12 * (this.currentDateTime.Hour % 12);
this.DrawSingleArrow(
canvas,
dialFace,
new ArrowInfo(
hourArrowLength,
this.hourArrowColor,
hourArrowThickness,
hourArrowAngle));
double minuteArrowAngle = 2 * Math.PI / 60 * this.currentDateTime.Minute;
this.DrawSingleArrow(
canvas,
dialFace,
new ArrowInfo(
minuteArrowLength,
this.minuteArrowColor,
minuteArrowThickness,
minuteArrowAngle));
double secondArrowAngle = 2 * Math.PI / 60 * this.currentDateTime.Second;
this.DrawSingleArrow(
canvas,
dialFace,
new ArrowInfo(
secondArrowLength,
this.secondArrowColor,
secondArrowThickness,
secondArrowAngle,
secondArrowCounterweightLength));
}
/// <summary>
/// Draws single arrow on watches
/// </summary>
/// <param name="canvas">Control canvas</param>
/// <param name="dialFace">Parameters of the dial face</param>
/// <param name="arrow">Parameters of arrow</param>
private void DrawSingleArrow(
PaintEventArgs canvas,
DialFaceInfo dialFace,
ArrowInfo arrow)
{
// Because arrow.Angle is clockwise diviation from x = 0
var realAngle = (Math.PI / 2) - arrow.Angle;
var firstPoint = this.ConvertPolarToCartesian(
arrow.CounterweightLength,
realAngle + Math.PI,
new Point(dialFace.CenterX, dialFace.CenterY));
var secondPoint = this.ConvertPolarToCartesian(
arrow.MainPartLength,
realAngle,
new Point(dialFace.CenterX, dialFace.CenterY));
var arrowPen = new Pen(arrow.ArrowColor, arrow.Thickness);
canvas.Graphics.DrawLine(arrowPen, firstPoint, secondPoint);
}
