Added round rectangle, cicle and triangle.

Applied Antialias on most of elements.

Progrart.Core/Graphics/Circle.cs

@@ -0,0 +1,80 @@
+using Jint;
+using Jint.Native;
+using Progrart.Core.JSExecution;
+using SkiaSharp;
+
+namespace Progrart.Core.Graphics
+{
+    public class Circle : BaseElement
+	{
+
+		float StrokeWidth;
+		SKPoint Position;
+		float Size;
+		SKColorF Color;
+		bool IsStroke;
+		SKShader? shader = null;
+		public override void SetupProperties(Engine engine)
+		{
+			base.SetupProperties(engine);
+			if (__object != null)
+			{
+				{
+					JsObject point = new JsObject(engine);
+					point.Set("x", 0);
+					point.Set("y", 0);
+					__object.Set("Position", point);
+				}
+				__object.Set("StrokeWidth", 1);
+				__object.Set("Size", 1);
+				__object.Set("IsStroke", true);
+				__object.Set("Color", ProgrartFunctions.color(engine, 1, 1, 1, 1));
+
+			}
+
+		}
+		public override void LoadProperties()
+		{
+			if (__object is not null)
+			{
+				StrokeWidth = (float)__object.Get("StrokeWidth").AsNumber();
+				Size = (float)__object.Get("Size").AsNumber();
+				IsStroke = (bool)__object.Get("IsStroke").AsBoolean();
+				{
+					if (__object.Get("Position") is JsObject Start)
+					{
+						this.Position = ProgrartConversion.ObtainSKPointFromJsObject(Start);
+					}
+				}
+				{
+					if (__object.Get("Color") is JsObject Color)
+					{
+						this.Color = ProgrartConversion.ObtainSKColorFFromJsObject(Color);
+					}
+				}
+
+				if (__object.Get("Shader") is JsObject shaderObj)
+					shader = ProgrartConversion.ObtainFromJsObject(shaderObj);
+			}
+		}
+		public override void Render(RenderContext context)
+		{
+			base.Render(context);
+			LoadProperties();
+			SKPoint pos = context.TranslatePoint(Position);
+			float Size = context.TranslateSize(this.Size);
+			context.DrawingCore.canvas.DrawCircle(
+				pos.X, pos.Y,
+				Size,
+				new SKPaint()
+				{
+					ColorF = Color,
+					StrokeWidth = context.TranslateSize(StrokeWidth),
+					Shader = shader,
+					IsStroke = IsStroke,
+					IsAntialias = true
+				}
+			);
+		}
+	}
+}