public Stream GetArcPartFromSquareImage(Stream ms, int partNumber, int nbParts)
{
Stream result = null;
using (Bitmap bitmap = BitmapFactory.DecodeStream(ms))
{
int diameter = bitmap.Width; // (int)(AvatarSize * GetDensity());
float arcAngle = 360 / nbParts;
float arcStart = 90 + (partNumber - 1) * arcAngle;
if (nbParts > 2)
{
arcStart += (180 / nbParts);
}
float deltaX = (float)(diameter / 2 - ((diameter * Math.Cos(DegreeToRadian(arcStart + arcAngle / 2)) + diameter) / 2)) / 2;
float deltaY = (float)(diameter / 2 - ((diameter * Math.Sin(DegreeToRadian(arcStart + arcAngle / 2)) + diameter) / 2)) / 2;
float startX = (float)((diameter * Math.Cos(DegreeToRadian(arcStart)) + diameter) / 2);
float startY = (float)((diameter * Math.Sin(DegreeToRadian(arcStart)) + diameter) / 2);
//float endX = (float)((diameter * Math.Cos(DegreeToRadian(arcStart + arcAngle)) + diameter) / 2);
//float endY = (float)((diameter * Math.Sin(DegreeToRadian(arcStart + arcAngle)) + diameter) / 2);
using (Bitmap temp = Bitmap.CreateBitmap(diameter, diameter, Bitmap.Config.Argb8888))
{
// First we get the bitmap part (we translate using deltaX/Y to have the center of the avatar)
using (BitmapShader shader = new BitmapShader(bitmap, Shader.TileMode.Clamp, Shader.TileMode.Clamp))
{
using (Paint paint = new Paint(PaintFlags.AntiAlias))
{
paint.SetShader(shader);
using (Android.Graphics.Path path = new Android.Graphics.Path())
{
using (Canvas canvas = new Canvas(temp))
{
path.MoveTo(diameter / 2 + deltaX, diameter / 2 + deltaY);
path.LineTo(startX + deltaX, startY + deltaY);
path.AddArc(deltaX, deltaY, diameter + deltaX, diameter + deltaY, arcStart, arcAngle);
path.LineTo(diameter / 2 + deltaX, diameter / 2 + deltaY);
canvas.DrawPath(path, paint);
//canvas.DrawArc(deltaX, deltaY, deltaX + diameter, deltaY + diameter, arcStart, arcAngle, true, paint);
}
}
}
}
// Now we translate back to have correct layout
result = GetTranslated(GetStreamFromBitmap(temp), -deltaX, -deltaY);
temp.Recycle();
}
bitmap.Recycle();
}
return(result);
}
public Path BuildPath (float animationProgress, float animationSeek)
{
Path path = null;
if (base.Value.StartAngle <= animationSeek)
{
path = new Path ();
var sweepAngle = CalculateSweepAngle (animationSeek, base.Value);
path.AddArc (base.DrawingArea, base.Value.StartAngle, sweepAngle);
}
return path;
}
public Path BuildPath (float animationProgress, float animationSeek)
{
var startAngle = FitChart.StartAngle;
var valueSweepAngle = base.Value.StartAngle + base.Value.SweepAngle;
valueSweepAngle -= startAngle;
var sweepAngle = valueSweepAngle * animationProgress;
var path = new Path ();
path.AddArc (base.DrawingArea, startAngle, sweepAngle);
return path;
}
private Path CreateRightEyeCircle(RectF arcBounds, float offsetY)
{
Path path = new Path();
//the center of the right eye
float rightEyeCenterX = arcBounds.CenterX() + mEyeInterval / 2.0f + mEyeCircleRadius;
float rightEyeCenterY = arcBounds.CenterY() + offsetY;
//the bounds of left eye
RectF leftEyeBounds = new RectF(rightEyeCenterX - mEyeCircleRadius, rightEyeCenterY - mEyeCircleRadius, rightEyeCenterX + mEyeCircleRadius, rightEyeCenterY + mEyeCircleRadius);
path.AddArc(leftEyeBounds, 180, -(DEGREE_180 + 15));
//the above radian of of the eye
path.QuadTo(leftEyeBounds.Right - mAboveRadianEyeOffsetX, leftEyeBounds.Top + mEyeCircleRadius * 0.2f, leftEyeBounds.Right - mAboveRadianEyeOffsetX / 4.0f, leftEyeBounds.Top - mEyeCircleRadius * 0.15f);
return(path);
}
public void AddArc(float xCenter, float yCenter, float radius, float startAngle, float endAngle)
{
path.AddArc(xCenter - radius, yCenter - radius, xCenter + radius, yCenter + radius, MathHelper.ConvertRadToDeg(startAngle), MathHelper.ConvertRadToDeg(endAngle - startAngle));
}
private void RenderValue(Canvas canvas, FitChartValue value)
{
if (!IsInEditMode)
{
var animationSeek = CalculateAnimationSeek ();
var renderer = RendererFactory.Renderer (AnimationMode, value, drawingArea);
var path = renderer.BuildPath (animationProgress, animationSeek);
if (path != null)
{
canvas.DrawPath (path, value.Paint);
}
}
else
{
var path = new Path ();
path.AddArc (drawingArea, StartAngle, DesignModeSweepAngle);
canvas.DrawPath (path, valueDesignPaint);
}
}
