//Define the constructor of this class.
public Sineframe()
{ //Set the size of the frame (window) holding the graphic area.
Size = new Size(form_width, form_height);
MaximumSize = maxframesize;
MinimumSize = minframesize;
//Set the title of this user interface.
Text = "Particle moving in a Sine Wave Pattern";
//Give feedback to the programmer.
System.Console.WriteLine("Form_width = {0}, Form_height = {1}.", form_width, form_height);
//Set the initial background color of this form.
BackColor = Color.Beige;
//Instantiate the collection of supporting algorithms
curve_algorithms = new Sinecurve();
//Set initial values for computing the position of the dot which will travel in a Sine curve pattern.
//The point (x,y) is the center of the dot in mathematical coordinates.
t = 0.0;
x = t;
y = amplitude * System.Math.Sin(coefficient * t);
//x_scaled_double and y_scaled_double are the coordinates of the upper left corner of the dot.
//The point (x_scaled_double,y_scaled_double) is the upper left corner of the dot in C# coordinate system.
x_scaled_double = scale_factor * x + offset - dot_radius;
y_scaled_double = (double)form_height / 2.0 - scale_factor * y - dot_radius;
System.Console.WriteLine("x_scaled_double = " + x_scaled_double + " y_scaled_double = " + y_scaled_double);///ok here.
//x_scaled_int and y_scaled_int are the integer coordinates of the upper left corner of the dot.
x_scaled_int = (int)System.Math.Round(x_scaled_double);
y_scaled_int = (int)System.Math.Round(y_scaled_double);
//Prepare a string holding the sine function: y = amplitude * sin (coefficient * t).
equation_font = new System.Drawing.Font("Arial", (float)equation_height, FontStyle.Regular);
equation = "y = " + String.Format("{0:0.00}", amplitude) + "*sin(" + String.Format("{0:0.00}", coefficient) + "*x)";
System.Console.WriteLine("The function is " + equation);
//Prepare the refresh clock
graphic_area_refresh_clock.Enabled = false;
graphic_area_refresh_clock.Elapsed += new ElapsedEventHandler(Update_the_graphic_area);
//Prepare the dot clock
dot_motion_clock.Enabled = false;
dot_motion_clock.Elapsed += new ElapsedEventHandler(Update_the_position_of_the_dot);
motion_clock_active = false;
//Prepare both clocks for start up.
Initialize_graphic_clock(refresh_rate);
Initialize_dot_clock(dot_update_rate);
//Set up the start/pause button
start_button.Text = "Start";
start_button.Size = new Size(60, 20);
start_button.BackColor = Color.LimeGreen;
start_button.Location = new Point((int)System.Math.Round(offset + 15.0), form_height - 60);
start_button.Click += new EventHandler(All_systems_go);
this_is_first_click_on_start_button = true;
Controls.Add(start_button);
//Set up the exit button
exit_button.Text = "Quit";
exit_button.Size = new Size(60, 20);
exit_button.BackColor = Color.Orange;
exit_button.Location = new Point(form_width - 80, form_height - 60);
exit_button.Click += new EventHandler(Shutdown);
Controls.Add(exit_button);
//Use extra memory to make a smooth animation.
DoubleBuffered = true;
}//End of constructor of Sineframe class.
//Define the constructor of this class.
public Sineframe()
{ //Set the initial size of this form.
Size = new Size(form_width, form_height);
MaximumSize = maxframesize;
MinimumSize = minframesize;
//Set the title of this user interface.
Text = "y = sin(4t) By Michael Rozsypal";
//Give feedback to the programmer.
System.Console.WriteLine("form_width = {0}, form_height = {1}.", form_width, form_height);
//Set the initial background color of this form.
BackColor = Color.Pink;
/*//Obtain the amplitude from the console.
* System.Console.Write("Enter a float value for the amplitude of the sine function - the range 0.0 to 5.0 is recommended: ");
* amplitude = double.Parse(System.Console.ReadLine());
*
* //Obtain the period from the console.
* System.Console.WriteLine("Enter a float value for the period of the sine function - 6.283185307 (2π) is a nice test case: ");
* System.Console.Write("Entering 0.0 or a number close to zero may cause a divide by zero error: ");
* period = double.Parse(System.Console.ReadLine());
*
* //Compute the coefficient of t in the function: y = amplitude * sin(coefficient * t).
* coefficient = 2.0*System.Math.PI/period;
*/
start_button.Text = "Go";
start_button.Size = new Size(80, 22);
start_button.Location = location_of_start_button;
start_button.BackColor = Color.LimeGreen;
exit_button.Text = "Exit";
exit_button.Size = new Size(80, 22);
exit_button.Location = location_of_exit_button;
exit_button.BackColor = Color.LimeGreen;
Controls.Add(start_button);
start_button.Click += new EventHandler(Manage_dot_clock);
Controls.Add(exit_button);
exit_button.Click += new EventHandler(Stoprun);
//Instantiate the collection of supporting algorithms
curve_algorithms = new Sinecurve();
//Set initial values for the sine curve in a standard mathematical cartesian coordinate system
t = 0.0;
x = t;
y = amplitude * System.Math.Sin(coefficient * t);
//Prepare the refresh clock
graphic_area_refresh_clock.Enabled = false;
graphic_area_refresh_clock.Elapsed += new ElapsedEventHandler(Update_the_graphic_area);
//Prepare the dot clock
dot_refresh_clock.Enabled = false;
dot_refresh_clock.Elapsed += new ElapsedEventHandler(Update_the_position_of_the_dot);
//Start both clocks running
Start_graphic_clock(refresh_rate);
//Start_dot_clock(dot_update_rate);
//Use extra memory to make a smooth animation.
DoubleBuffered = true;
//Initialize the pointer used to write onto the bitmap stored in memory.
pointer_to_graphic_surface = Graphics.FromImage(pointer_to_bitmap_in_memory);
initialize_bitmap();
} //End of constructor of Sineframe class.