51 lines
2.1 KiB
C#
51 lines
2.1 KiB
C#
using SkiaSharp;
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using System;
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using System.Collections.Generic;
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using System.Text;
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namespace DataDisplay.Common
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{
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public class PointMapping
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{
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public PointMapping(double width,double height,double xDataExtent,double xDataExtentMin,double yDataExtent,double yDataExtentMin,double xMarginExtent=0.00,double yMarginExtent=0.00)
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{
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Width=width;
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Height=height;
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XMargin=xMarginExtent;
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YMargin=yMarginExtent;
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XDataExtent=xDataExtent;
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XDataExtentMin=xDataExtentMin;
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YDataExtent=yDataExtent;
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YDataExtentMin=yDataExtentMin;
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XScalingFactor=(Width-(XMargin*2))/(XDataExtent-XDataExtentMin);
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YScalingFactor=(Height-(YMargin*2))/(YDataExtent-YDataExtentMin);
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}
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// MapPoint will both scale the given point and translate the given point from an upper left origin system to a bottom left origin system
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public SKPoint MapPoint(SKPoint sourcePoint)
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{
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SKPoint mappedPoint=new SKPoint((float)((sourcePoint.X-XDataExtentMin)*XScalingFactor),(float)(Height-((sourcePoint.Y-YDataExtentMin)*YScalingFactor)));
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mappedPoint.X+=(float)XMargin; // offset by the xMargin
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mappedPoint.Y-=(float)YMargin; // offset by the yMargin
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return mappedPoint;
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}
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// TranslatePoint will only translate the given point from an upper left origin system to a bottom left origin system
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public SKPoint TranslatePoint(SKPoint sourcePoint)
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{
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SKPoint mappedPoint=new SKPoint((float)sourcePoint.X,(float)(Height-sourcePoint.Y-1));
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return mappedPoint;
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}
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public double Width{get;private set;}
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public double Height{get;private set;}
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public double XDataExtent{get;private set;}
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public double XDataExtentMin{get;private set;}
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public double XRange{get{return XDataExtent-XDataExtentMin;}}
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public double YDataExtent{get;private set;}
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public double YDataExtentMin{get;private set;}
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public double YRange{get{return YDataExtent-YDataExtentMin;}}
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public double XMargin{get;private set;}
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public double YMargin{get;private set;}
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public double XScalingFactor{get;private set;}
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public double YScalingFactor{get;private set;}
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}
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}
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