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public DrawLine ( float x0, float y0, float x1, float y1, |
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| x0 | float | |
| y0 | float | |
| x1 | float | |
| y1 | float | |
| paint | ||
| return | void | |
public void DrawLine(float x1, float y1, float x2, float y2, PaintBrush paint) => _canvas.DrawLine(x1, y1, x2, y2, GetSKPaint(paint));
protected override void Draw(SKCanvas canvas, int width, int height)
{
float time = _frame / (LengthSec * Fps);
using (var paint = new SKPaint())
{
paint.Color = Foreground.ToSkia();
paint.StrokeWidth = (float)StrokeWidth;
paint.IsAntialias = true;
paint.IsStroke = true;
for (int a = 0; a < 3; ++a)
{
var matrix = SKMatrix.MakeRotation(2 * (float)Math.PI * time / 6 + 2 * (float)Math.PI * a / 3);
matrix.TransX = width / 2f;
matrix.TransY = height / 2f;
canvas.SetMatrix(matrix);
const int n = 12;
const int sp = 39;
for (int i = -n; i <= n; ++i)
{
float y = (float)(i * sp * Math.Pow(2, time));
float tt = (float)Math.Min(1, Math.Max(0, 1.09 * time - 0.00275 * Math.Abs(y) + 0.075));
float x;
if (i % 2 == 0)
x = width;
else
x = width * tt;
if (x > 0)
canvas.DrawLine(-x, y, x, y, paint);
}
}
}
++_frame;
if (_frame > LengthSec * Fps)
_frame = 0;
}
public static void PathEffects (SKCanvas canvas, int width, int height)
{
canvas.Clear (SKColors.White);
var step = height / 4;
using (var paint = new SKPaint ())
using (var effect = SKPathEffect.CreateDash (new [] { 15f, 5f }, 0)) {
paint.IsStroke = true;
paint.StrokeWidth = 4;
paint.PathEffect = effect;
canvas.DrawLine (10, step, width - 10 - 10, step, paint);
}
using (var paint = new SKPaint ())
using (var effect = SKPathEffect.CreateDiscrete (10, 10)) {
paint.IsStroke = true;
paint.StrokeWidth = 4;
paint.PathEffect = effect;
canvas.DrawLine (10, step * 2, width - 10 - 10, step * 2, paint);
}
using (var paint = new SKPaint ())
using (var dashEffect = SKPathEffect.CreateDash (new [] { 15f, 5f }, 0))
using (var discreteEffect = SKPathEffect.CreateDiscrete (10, 10))
using (var effect = SKPathEffect.CreateCompose (dashEffect, discreteEffect)) {
paint.IsStroke = true;
paint.StrokeWidth = 4;
paint.PathEffect = effect;
canvas.DrawLine (10, step * 3, width - 10 - 10, step * 3, paint);
}
}
private void DrawLineInternal(SKCanvas canvas, SKPaint pen, bool isStroked, ref SKPoint p0, ref SKPoint p1)
{
if (isStroked)
{
canvas.DrawLine(p0.X, p0.Y, p1.X, p1.Y, pen);
}
}
public void DrawLine(float x1, float y1, float x2, float y2, PaintBrush grid) => _canvas.DrawLine(x1, y1, x2, y2, grid.ToSkia());