private void DrawEquationOverScren(List <Vector2> curEquation, string expression)
{
int gridSize = 50;
if (!AdvancedMath.ContainsNewCons(expression, 'y'))
{
int width = (int)Math.Round(Window.ClientBounds.Width * camera.Zoom / gridSize, MidpointRounding.AwayFromZero);
width = (int)Math.Round(Math.Abs(camera.ScreenToWorldSpace(new Vector2(Window.ClientBounds.Width, 0)).X) / gridSize, MidpointRounding.AwayFromZero);
//int width = (AdvancedMath.GetNearestMultiple((int)Math.Round(camera.ScreenToWorldSpace(new Vector2(0, Window.ClientBounds.Height)).Y), gridSize) + gridSize) - AdvancedMath.GetNearestMultiple((int)Math.Round(camera.ScreenToWorldSpace(new Vector2()).X), gridSize);
//if (camera.CameraPos().X > 0)
//{
// //width = (AdvancedMath.GetNearestMultiple((int)Math.Round(camera.ScreenToWorldSpace(new Vector2(0, Window.ClientBounds.Height)).Y), gridSize) + gridSize) + AdvancedMath.GetNearestMultiple((int)Math.Round(camera.ScreenToWorldSpace(new Vector2()).X), gridSize);
// width = AdvancedMath.GetNearestMultiple(50 * Window.ClientBounds.Width, gridSize);
//}
int start = ((int)Math.Round(camera.ScreenToWorldSpace(new Vector2(0, 0)).X / gridSize, MidpointRounding.AwayFromZero));
float timeStep = (float)(-Math.Pow(camera.Zoom, 1.7f) / 23f + 0.7f);
if (expression.Contains("tan"))
{
timeStep = Math.Clamp(timeStep, 0.01f, 0.04f);
}
SetEquation(curEquation, start - 50, Math.Abs(width - start) + 50 * 2, expression, timeStep);
}
else
{
//int height = (AdvancedMath.GetNearestMultiple((int)Math.Round(camera.ScreenToWorldSpace(new Vector2(Window.ClientBounds.Width, 0)).X), gridSize) + gridSize) - AdvancedMath.GetNearestMultiple((int)Math.Round(camera.ScreenToWorldSpace(new Vector2()).X), gridSize);
//int height = AdvancedMath.GetNearestMultiple(50 * Window.ClientBounds.Height, gridSize);
//int height = Window.ClientBounds.Height / gridSize;
//SetEquation(curEquation, AdvancedMath.GetNearestMultiple((int)Math.Round(camera.ScreenToWorldSpace(new Vector2()).X), gridSize) / gridSize, height / gridSize, expression);
int height = (int)Math.Round(Math.Abs(camera.ScreenToWorldSpace(new Vector2(0, Window.ClientBounds.Height)).Y) / gridSize, MidpointRounding.AwayFromZero);
int start = ((int)Math.Round(camera.ScreenToWorldSpace(new Vector2(0, 0)).Y / gridSize, MidpointRounding.AwayFromZero));
SetEquation(curEquation, start - 50, Math.Abs(height - start) + 50 * 2, expression);
}
}
private void SetEquation(List <Vector2> curEquation, int start, int iterations, string expression, float timeSteps)
{
curEquation.Clear();
int width = 50;
iterations += start;
if (!AdvancedMath.ContainsNewCons(expression, 'y'))
{
for (float x = start; x <= iterations; x += timeSteps)
{
string newExpress = AdvancedMath.ReplaceXWithConstant(expression, x, "x");
curEquation.Add(new Vector2(x * width, -((float)AdvancedMath.Eval(newExpress) * width)));
}
}
else
{
try
{
for (float y = start; y <= iterations; y += timeSteps)
{
string newExpress = AdvancedMath.ReplaceXWithConstant(expression, y, "y");
curEquation.Add(new Vector2(((float)AdvancedMath.Eval(newExpress) * width), -y * width));
}
AdvancedMath.ResetX();
}
catch (Exception)
{
AdvancedMath.ResetX();
throw;
}
}
}
