private void DrawOrFillMesh([NotNull] IPaintProvider provider, [NotNull] Triangle[] mesh)
{
using (var paint = provider.Paint.Clone()) {
const SKVertexMode geometryMode = SKVertexMode.Triangles;
var vertices = new SKPoint[mesh.Length * 3];
for (var i = 0; i < mesh.Length; ++i)
{
var j = i * 3;
vertices[j] = mesh[i].Point1.ToSKPoint();
vertices[j + 1] = mesh[i].Point2.ToSKPoint();
vertices[j + 2] = mesh[i].Point3.ToSKPoint();
}
var colors = new SKColor[vertices.Length];
for (var i = 0; i < colors.Length; ++i)
{
colors[i] = SKColors.White;
}
_canvas?.DrawVertices(geometryMode, vertices, colors, paint);
}
SetDirty();
}
private void DrawOrFillMultilineString([NotNull] IPaintProvider provider, [NotNull] Font font, [CanBeNull] string str, float x, float y, float maxWidth, float maxHeight, [CanBeNull] StringFormat stringFormat)
{
if (string.IsNullOrWhiteSpace(str))
{
return;
}
if (_canvas == null)
{
return;
}
using (var paint = provider.Paint.Clone()) {
SetSKPaintFontProperties(paint, font, stringFormat);
var lines = SplitLines(str, paint, maxWidth, maxHeight, stringFormat);
var lineHeight = DetermineLineHeight(paint, stringFormat);
foreach (var line in lines)
{
_canvas.DrawText(line.Value, x, y, paint);
y += lineHeight;
}
}
SetDirty();
}
private void DrawOrFillString([NotNull] IPaintProvider provider, [NotNull] Font font, [CanBeNull] string str, float x, float y, [CanBeNull] StringFormat stringFormat)
{
if (string.IsNullOrWhiteSpace(str))
{
return;
}
using (var paint = provider.Paint.Clone()) {
SetSKPaintFontProperties(paint, font, stringFormat);
_canvas?.DrawText(str, x, y, paint);
}
SetDirty();
}
private void DrawOrFillPolygon([NotNull] IPaintProvider provider, [NotNull] Vector2[] points)
{
Guard.ArgumentNotNull(points, nameof(points));
if (points.Length < 3)
{
throw new ArgumentException("A polygon should contain at least 3 points.", nameof(points));
}
if (_canvas == null)
{
return;
}
using (var path = new SKPath()) {
var skPoints = Array.ConvertAll(points, XnaExtensions.ToSKPoint);
path.AddPoly(skPoints);
_canvas.DrawPath(path, provider.Paint);
}
SetDirty();
}
private void DrawOrFillEllipse([NotNull] IPaintProvider provider, float x, float y, float width, float height)
{
_canvas?.DrawOval(new SKRect(x, y, x + width, y + height), provider.Paint);
SetDirty();
}
