private void GraphScene2D(bool legacy)
{
var xExp = Parse(xt.Text, Settings.Xt, Settings.XtReg);
var yExp = Parse(yt.Text, Settings.Yt, Settings.YtReg);
var width = CanvasWidth;
var height = CanvasHeight;
var graphToCanvasX = width / (XMax2D - XMin2D);
var graphToCanvasY = height / (YMax2D - YMin2D);
// distance from origin of graph to origin of canvas
var offsetX = -XMin2D;
var offsetY = YMax2D;
var points = new PointCollection();
for (var t = Min2D; t <= Max2D + 0.000001; t += Step2D)
{
VariableExpression.Define("t", t);
var xGraph = xExp.Evaluate();
var yGraph = yExp.Evaluate();
// Translate the origin based on the max/min parameters (y axis is flipped), then scale to canvas.
var xCanvas = (xGraph + offsetX) * graphToCanvasX;
var yCanvas = (offsetY - yGraph) * graphToCanvasY;
points.Add(ClampedPoint(xCanvas, yCanvas));
}
VariableExpression.Undefine("t");
screenCanvas.Children.Clear();
_axisHelper = new DrawAxisHelper(screenCanvas, CanvasSize);
_axisHelper.DrawAxes(XMin2D, XMax2D, YMin2D, YMax2D);
var polyLine = new Polyline
{
Stroke = Brushes.Black,
StrokeThickness = 1,
Points = points
};
screenCanvas.Children.Add(polyLine);
ShowScreenCanvas();
}
private void GraphScene(bool legacy)
{
var exp = Parse(y.Text, Settings.Y, Settings.YReg);
var width = CanvasWidth;
var height = CanvasHeight;
var offsetX = -XMin;
var offsetY = YMax;
var graphToCanvasX = width / (XMax - XMin);
var graphToCanvasY = height / (YMax - YMin);
var points = new PointCollection();
for (var x = XMin; x < XMax; x += 1 / graphToCanvasX)
{
VariableExpression.Define("x", x);
// Translate the origin based on the max/min parameters (y axis is flipped), then scale to canvas.
var xCanvas = (x + offsetX) * graphToCanvasX;
var yCanvas = (offsetY - exp.Evaluate()) * graphToCanvasY;
points.Add(ClampedPoint(xCanvas, yCanvas));
}
VariableExpression.Undefine("x");
screenCanvas.Children.Clear();
_axisHelper = new DrawAxisHelper(screenCanvas, CanvasSize);
_axisHelper.DrawAxes(XMin, XMax, YMin, YMax);
var graphLine = new Polyline
{
Stroke = Brushes.Black,
StrokeThickness = 1,
Points = points
};
screenCanvas.Children.Add(graphLine);
ShowScreenCanvas();
}
private void GraphScene(bool legacy)
{
var exp = Parse(y.Text, Settings.Y, Settings.YReg);
var width = CanvasWidth;
var height = CanvasHeight;
var offsetX = -XMin;
var offsetY = YMax;
var graphToCanvasX = width/(XMax - XMin);
var graphToCanvasY = height/(YMax - YMin);
var points = new PointCollection();
for (var x = XMin; x < XMax; x += 1/graphToCanvasX)
{
VariableExpression.Define("x", x);
// Translate the origin based on the max/min parameters (y axis is flipped), then scale to canvas.
var xCanvas = (x + offsetX)*graphToCanvasX;
var yCanvas = (offsetY - exp.Evaluate())*graphToCanvasY;
points.Add(ClampedPoint(xCanvas, yCanvas));
}
VariableExpression.Undefine("x");
screenCanvas.Children.Clear();
_axisHelper = new DrawAxisHelper(screenCanvas, CanvasSize);
_axisHelper.DrawAxes(XMin, XMax, YMin, YMax);
var graphLine = new Polyline
{
Stroke = Brushes.Black,
StrokeThickness = 1,
Points = points
};
screenCanvas.Children.Add(graphLine);
ShowScreenCanvas();
}
private void GraphScene2D(bool legacy)
{
var xExp = Parse(xt.Text, Settings.Xt, Settings.XtReg);
var yExp = Parse(yt.Text, Settings.Yt, Settings.YtReg);
var width = CanvasWidth;
var height = CanvasHeight;
var graphToCanvasX = width/(XMax2D - XMin2D);
var graphToCanvasY = height/(YMax2D - YMin2D);
// distance from origin of graph to origin of canvas
var offsetX = -XMin2D;
var offsetY = YMax2D;
var points = new PointCollection();
for (var t = Min2D; t <= Max2D + 0.000001; t += Step2D)
{
VariableExpression.Define("t", t);
var xGraph = xExp.Evaluate();
var yGraph = yExp.Evaluate();
// Translate the origin based on the max/min parameters (y axis is flipped), then scale to canvas.
var xCanvas = (xGraph + offsetX)*graphToCanvasX;
var yCanvas = (offsetY - yGraph)*graphToCanvasY;
points.Add(ClampedPoint(xCanvas, yCanvas));
}
VariableExpression.Undefine("t");
screenCanvas.Children.Clear();
_axisHelper = new DrawAxisHelper(screenCanvas, CanvasSize);
_axisHelper.DrawAxes(XMin2D, XMax2D, YMin2D, YMax2D);
var polyLine = new Polyline
{
Stroke = Brushes.Black,
StrokeThickness = 1,
Points = points
};
screenCanvas.Children.Add(polyLine);
ShowScreenCanvas();
}