I want to move the zoomed image with gyroscope. As you can see in below code I can do this thing by hand and I got a good result. I have to write something inside "Gyroscope_ReadingChanged" to convert gyroscope data to the Content.TranslationX and Content.TranslationY. Any help would be appreciated.
<?xml version="1.0" encoding="utf-8" ?>
<ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
xmlns:video="clr-namespace:UbSports.Controls"
xmlns:local="clr-namespace:UbSports.Controls"
x:Class="UbSports.Pages.TestPage">
<local:PinchToZoomContainer VerticalOptions="FillAndExpand">
<local:PinchToZoomContainer.Content>
<Image x:Name="image" Source="waterfront.jpg" />
</local:PinchToZoomContainer.Content>
</local:PinchToZoomContainer>
</ContentPage>
[XamlCompilation(XamlCompilationOptions.Compile)]
public partial class TestPage: ContentPage
{
public TestPage()
{
InitializeComponent();
}
}
public class PinchToZoomContainer : ContentView
{
public PinchToZoomContainer()
{
Gyroscope.ReadingChanged += Gyroscope_ReadingChanged;
try
{
Gyroscope.Start(SensorSpeed.UI);
}
catch (FeatureNotSupportedException fnsEx)
{
}
catch (Exception ex)
{
}
var panGesture = new PanGestureRecognizer();
panGesture.PanUpdated += OnPanUpdated;
GestureRecognizers.Add(panGesture);
var pinchGesture = new PinchGestureRecognizer();
pinchGesture.PinchUpdated += OnPinchUpdated;
GestureRecognizers.Add(pinchGesture);
}
void Gyroscope_ReadingChanged(object sender, GyroscopeChangedEventArgs e)
{
var data = e.Reading;
if (data.AngularVelocity.X == 0 && data.AngularVelocity.Y == 0) return;
// do something
}
void OnPanUpdated(object sender, PanUpdatedEventArgs e)
{
switch (e.StatusType)
{
case GestureStatus.Started:
startX = e.TotalX;
startY = e.TotalY;
Content.AnchorX = 0;
Content.AnchorY = 0;
break;
case GestureStatus.Running:
var maxTranslationX = Content.Scale * Content.Width - Content.Width;
Content.TranslationX = Math.Min(0, Math.Max(-maxTranslationX, xOffset + e.TotalX - startX));
var maxTranslationY = Content.Scale * Content.Height - Content.Height;
Content.TranslationY = Math.Min(0, Math.Max(-maxTranslationY, yOffset + e.TotalY - startY));
break;
case GestureStatus.Completed:
xOffset = Content.TranslationX;
yOffset = Content.TranslationY;
break;
}
}
void OnPinchUpdated(object sender, PinchGestureUpdatedEventArgs e)
{
if (e.Status == GestureStatus.Started)
{
startScale = Content.Scale;
Content.AnchorX = 0;
Content.AnchorY = 0;
}
if (e.Status == GestureStatus.Running)
{
currentScale += (e.Scale - 1) * startScale;
currentScale = Math.Max(1, currentScale);
double renderedX = Content.X + xOffset;
double deltaX = renderedX / Width;
double deltaWidth = Width / (Content.Width * startScale);
double originX = (e.ScaleOrigin.X - deltaX) * deltaWidth;
double renderedY = Content.Y + yOffset;
double deltaY = renderedY / Height;
double deltaHeight = Height / (Content.Height * startScale);
double originY = (e.ScaleOrigin.Y - deltaY) * deltaHeight;
double targetX = xOffset - (originX * Content.Width) * (currentScale - startScale);
double targetY = yOffset - (originY * Content.Height) * (currentScale - startScale);
Content.TranslationX = targetX.Clamp(-Content.Width * (currentScale - 1), 0);
Content.TranslationY = targetY.Clamp(-Content.Height * (currentScale - 1), 0);
Content.Scale = currentScale;
}
if (e.Status == GestureStatus.Completed)
{
xOffset = Content.TranslationX;
yOffset = Content.TranslationY;
}
}
}
Related
I have a problem. I created an image within a AbsoluteLayout with a panGestureRecognizer, but when I use that to move the image in the app, it jumps back and forth. Very annoying. Here is the code I am using
private void AddImageToPreview(object sender, System.Collections.Specialized.NotifyCollectionChangedEventArgs e)
{
if (e.Action == System.Collections.Specialized.NotifyCollectionChangedAction.Add)
{
var image = (Image)e.NewItems[e.NewItems.Count - 1];
PanGestureRecognizer panGesture = new PanGestureRecognizer();
panGesture.PanUpdated += PanUpdated;
image.GestureRecognizers.Add(panGesture);
MyLayout.Children.Add(image);
}
}
void PanUpdated(object sender, PanUpdatedEventArgs args)
{
Image image = (Image)sender;
if (args.StatusType.Equals(GestureStatus.Running))
{
x = args.TotalX;
y = args.TotalY;
image.TranslateTo(x, y, 1);
}
}
Can someone help me improve this, so this drag/drop system works smooth and fast!
I have a control purely made in Xamarin.Forms that you can use for the above mentioned usage:
using System;
using Xamarin.Forms;
using FFImageLoading.Forms;
public class ZoomImage : CachedImage
{
private const double MIN_SCALE = 1;
private const double MAX_SCALE = 4;
private const double OVERSHOOT = 0.15;
private double StartScale, LastScale;
private double StartX, StartY;
public ZoomImage()
{
var pinch = new PinchGestureRecognizer();
pinch.PinchUpdated += OnPinchUpdated;
GestureRecognizers.Add(pinch);
var pan = new PanGestureRecognizer();
pan.PanUpdated += OnPanUpdated;
GestureRecognizers.Add(pan);
var tap = new TapGestureRecognizer { NumberOfTapsRequired = 2 };
tap.Tapped += OnTapped;
GestureRecognizers.Add(tap);
Scale = MIN_SCALE;
TranslationX = TranslationY = 0;
AnchorX = AnchorY = 0;
}
protected override SizeRequest OnMeasure(double widthConstraint, double heightConstraint)
{
Scale = MIN_SCALE;
TranslationX = TranslationY = 0;
AnchorX = AnchorY = 0;
return base.OnMeasure(widthConstraint, heightConstraint);
}
private void OnTapped(object sender, EventArgs e)
{
if (Scale > MIN_SCALE)
{
this.ScaleTo(MIN_SCALE, 250, Easing.CubicInOut);
this.TranslateTo(0, 0, 250, Easing.CubicInOut);
}
else
{
AnchorX = AnchorY = 0.5; //TODO tapped position
this.ScaleTo(MAX_SCALE, 250, Easing.CubicInOut);
}
}
private void OnPanUpdated(object sender, PanUpdatedEventArgs e)
{
switch (e.StatusType)
{
case GestureStatus.Started:
StartX = (1 - AnchorX) * Width;
StartY = (1 - AnchorY) * Height;
break;
case GestureStatus.Running:
AnchorX = Clamp(1 - (StartX + e.TotalX) / Width, 0, 1);
AnchorY = Clamp(1 - (StartY + e.TotalY) / Height, 0, 1);
break;
}
}
private void OnPinchUpdated(object sender, PinchGestureUpdatedEventArgs e)
{
switch (e.Status)
{
case GestureStatus.Started:
LastScale = e.Scale;
StartScale = Scale;
AnchorX = e.ScaleOrigin.X;
AnchorY = e.ScaleOrigin.Y;
break;
case GestureStatus.Running:
if (e.Scale < 0 || Math.Abs(LastScale - e.Scale) > (LastScale * 1.3) - LastScale)
{ return; }
LastScale = e.Scale;
var current = Scale + (e.Scale - 1) * StartScale;
Scale = Clamp(current, MIN_SCALE * (1 - OVERSHOOT), MAX_SCALE * (1 + OVERSHOOT));
break;
case GestureStatus.Completed:
if (Scale > MAX_SCALE)
this.ScaleTo(MAX_SCALE, 250, Easing.SpringOut);
else if (Scale < MIN_SCALE)
this.ScaleTo(MIN_SCALE, 250, Easing.SpringOut);
break;
}
}
private T Clamp<T>(T value, T minimum, T maximum) where T: IComparable
{
if (value.CompareTo(minimum) < 0)
return minimum;
else if (value.CompareTo(maximum) > 0)
return maximum;
else
return value;
}
}
What this does:
Pinch zoom, Pan and Swipe movements together with double tap centre zoom and un-zoom
Note: I have used FFimageLoading's CachedImage because I needed to cache the data in case you do not intend this replace CachedImage with Xamarin.Forms.Image
I want to zoom and pan an image in my app.But it is not working perfectly.
I tried this link: https://forums.xamarin.com/discussion/74168/full-screen-image-viewer-with-pinch-to-zoom-pan-to-move-tap-to-show-captions-for-xamarin-forms
Please help me..
Here is my XAML Code
<ContentPage.Content>
<StackLayout HorizontalOptions="CenterAndExpand" VerticalOptions="CenterAndExpand" BackgroundColor="Yellow">
<Image Source="download" x:Name="img">
<Image.GestureRecognizers>
<PanGestureRecognizer PanUpdated="OnPanUpdated"/>
<PinchGestureRecognizer PinchUpdated="OnPinchUpdated"/>
<TapGestureRecognizer Tapped="OnTapped"/>
</Image.GestureRecognizers>
</Image>
</StackLayout>
</ContentPage.Content>
My mainpage.cs
private const double MIN_SCALE = 1;
private const double MAX_SCALE = 4;
private const double OVERSHOOT = 0.15;
private double StartScale;
private double LastX, LastY;
private double StartX, StartY;
public MainPage()
{
InitializeComponent();
Scale = MIN_SCALE;
TranslationX = TranslationY = 0;
AnchorX = AnchorY = 0;
}
protected override SizeRequest OnMeasure(double widthConstraint, double heightConstraint)
{
Scale = MIN_SCALE;
TranslationX = TranslationY = 0;
AnchorX = AnchorY = 0;
return base.OnMeasure(widthConstraint, heightConstraint);
}
private void OnTapped(object sender, EventArgs e)
{
if (Scale > MIN_SCALE)
{
this.ScaleTo(MIN_SCALE, 250, Easing.CubicInOut);
this.TranslateTo(0, 0, 250, Easing.CubicInOut);
}
else
{
AnchorX = AnchorY = 0.5; //TODO tapped position
this.ScaleTo(MAX_SCALE, 250, Easing.CubicInOut);
}
}
private void OnPanUpdated(object sender, PanUpdatedEventArgs e)
{
if (Scale > MIN_SCALE)
switch (e.StatusType)
{
case GestureStatus.Started:
StartX = (1 - AnchorX) * Width;
StartY = (1 - AnchorY) * Height;
break;
case GestureStatus.Running:
TranslationX = Clamp(LastX + e.TotalX * Scale, -Width / 2, Width / 2);
TranslationY = Clamp(LastY + e.TotalY * Scale, -Height / 2, Height / 2);
break;
}
//switch (e.StatusType)
//{
// case GestureStatus.Started:
// StartX = (1 - AnchorX) * Width;
// StartY = (1 - AnchorY) * Height;
// break;
// case GestureStatus.Running:
// AnchorX = Clamp(1 - (StartX + e.TotalX) / Width, 0, 1);
// AnchorY = Clamp(1 - (StartY + e.TotalY) / Height, 0, 1);
// break;
//}
}
private void OnPinchUpdated(object sender, PinchGestureUpdatedEventArgs e)
{
switch (e.Status)
{
case GestureStatus.Started:
StartScale = Scale;
AnchorX = e.ScaleOrigin.X;
AnchorY = e.ScaleOrigin.Y;
break;
case GestureStatus.Running:
double current = Scale + (e.Scale - 1) * StartScale;
Scale = Clamp(current, MIN_SCALE * (1 - OVERSHOOT), MAX_SCALE * (1 + OVERSHOOT));
break;
case GestureStatus.Completed:
if (Scale > MAX_SCALE)
this.ScaleTo(MAX_SCALE, 250, Easing.SpringOut);
else if (Scale < MIN_SCALE)
this.ScaleTo(MIN_SCALE, 250, Easing.SpringOut);
break;
}
}
protected override void OnSizeAllocated(double width, double height)
{
base.OnSizeAllocated(width, height); //must be called
img.TranslateTo(0, 0, 0, Easing.Linear);
}
private T Clamp<T>(T value, T minimum, T maximum) where T : IComparable
{
if (value.CompareTo(minimum) < 0)
return minimum;
else if (value.CompareTo(maximum) > 0)
return maximum;
else
return value;
}
}
When I zoom the image ,the image position look like this
Image gestures is not working perfectly.When double tap the image ,zoom in and zoom out work perfectly.
I am working on a project where I have to align series of images so for that I use lines created using bitmap. Now user can move and rotate this line in anywhere inside panel which has that image as background. Now I have already tried to make panel double buffered which solves the problem of background snapshot while rotating, but when I move that line it takes a piece of background with it. I also tried to refresh panel but that's not working.
Heres the code:
private bool _rotating;
private bool _dragging;
private int _clickX;
private int _clickY;
private Point _clickCoords;
private int _middleX;
private int _middleY;
private int _centerX;
private int _centerY;
private double _radius;
private DateTime lastRotate = DateTime.Today;
public void UpdateCircle(Line l)
{
_centerX = (l.EndPoint.X + l.StartPoint.X) / 2 + l.Left;
_centerY = (l.EndPoint.Y + l.StartPoint.Y) / 2 + l.Top;
_radius = GetDistance(l.StartPoint.X, l.StartPoint.Y, l.EndPoint.X, l.EndPoint.Y) / 2;
// panel5.Refresh();
}
public void UpdateMiddle(Line l)
{
_middleX = (l.EndPoint.X + l.StartPoint.X) / 2;
_middleY = (l.EndPoint.Y + l.StartPoint.Y) / 2;
// panel5.Refresh();
}
public double GetDistance(double x1, double y1, double x2, double y2)
{
return Math.Sqrt((x1 - x2) * (x1 - x2) + (y1 - y2) * (y1 - y2));
}
public void LineMouseDown(object sender, MouseEventArgs e)
{
var l = (Line)sender;
if (GetDistance(e.X, e.Y, l.StartPoint.X, l.StartPoint.Y) < 30 ||
GetDistance(e.X, e.Y, l.EndPoint.X, l.EndPoint.Y) < 30)
{
_rotating = true;
}
else
{
_dragging = true;
panel5.Refresh();
}
_clickX = e.X;
_clickY = e.Y;
panel5.Refresh();
_clickCoords = new Point(l.Left + e.X, l.Top + e.Y);
UpdateCircle(l);
UpdateMiddle(l);
// panel5.Refresh();
}
public void LineMouseUp(object sender, MouseEventArgs e)
{
_rotating = false;
_dragging = false;
panel5.Refresh();
}
public void LineMouseMove(object sender, MouseEventArgs e)
{
// panel5.Refresh();
var l = (Line)sender;
if (_rotating)
{
if ((DateTime.Now - lastRotate).TotalMilliseconds > 60)
{
try
{
var angle = GetAngle(l.Left + e.X, l.Top + e.Y, _centerX, 0, _centerX, _centerY);
var newStartPoint = new Point(
(int)Math.Round(_middleX + _radius * Math.Sin(angle)),
(int)Math.Round(_middleY + _radius * Math.Cos(angle))
);
var newEndPoint = new Point(2 * _middleX - newStartPoint.X, 2 * _middleY - newStartPoint.Y);
l.SetPoints(newStartPoint, newEndPoint);
UpdateMiddle(l);
lastRotate = DateTime.Now;
}
catch
{
//ignored
}
}
}
else if (_dragging)
{
l.Left = l.Left + e.X - _clickX;
l.Top = l.Top + e.Y - _clickY;
// panel5.Refresh();
}
}
public double GetAngle(int x2, int y2, int x1, int y1, int x0, int y0)
{
double angle = Math.Atan2(y1 - y0, x1 - x0) - Math.Atan2(y2 - y0, x2 - x0);
return angle;
}
And heres how I create lines:
bitLine = new Line { LineColor = Color.Red, LineWidth = 2, StartPoint = new Point(x1, y1), EndPoint = new Point(x2, y2) };
bitLine2 = new Line { LineColor = Color.Red, LineWidth = 2, StartPoint = new Point(x1, y1), EndPoint = new Point(x2, y2) };
//bitLine.Cursor = Cursors.SizeAll;
bitLine.MouseDown += LineMouseDown;
bitLine.MouseUp += LineMouseUp;
bitLine.MouseMove += LineMouseMove;
bitLine2.MouseDown += LineMouseDown;
bitLine2.MouseUp += LineMouseUp;
bitLine2.MouseMove += LineMouseMove;
bitLine2.Click += bitLine2_Click;
bitLine.Click += bitLine_Click;
panel5.Controls.Add(bitLine);
panel5.Controls.Add(bitLine2);
pb.WireControl(bitLine);
pb.WireControl(bitLine2);
bitLine.Location = Program.line1_location;
bitLine2.Location = Program.line2_location;
So please any suggestions will be helpful. I am really stuck in this.
Here is screenshot of what is the problem
Into Copystransform, if I removed 2 in the end of line then I will could zoom in and out but could not drag while that have zoom in.
what else I did not remove then can't zoom and can't drag. It just zoom when the picture is small else if the picture is full screen then did not that.
Link:http://blogs.msdn.com/b/wsdevsol/archive/2014/06/10/constraining-manipulations.aspx
double mincale = 0.5;
//double maxscale = 10.0;
CompositeTransform savedtransform = new CompositeTransform();
private void Image_ManipulationDelta(object sender, ManipulationDeltaRoutedEventArgs e)
{
// FrameworkElement elemt = sender as FrameworkElement;
Image elemt = sender as Image;
CompositeTransform transform = elemt.RenderTransform as CompositeTransform;
//
copytransform(transform,savedtransform);
//apply
transform.ScaleX *= e.Delta.Scale;
transform.ScaleY *= e.Delta.Scale;
transform.TranslateX += e.Delta.Translation.X;
transform.TranslateY += e.Delta.Translation.Y;
if (transform.ScaleX < mincale) transform.ScaleX = mincale;
if (transform.ScaleY < mincale) transform.ScaleY = mincale;
// if (transform.ScaleX > maxscale) transform.ScaleX = maxscale;
// if (transform.ScaleY > maxscale) transform.ScaleY = maxscale;
if(elemt!=null)
{
if(!intersetElemnets(elemt,this.content,true))
{
copytransform(savedtransform, transform);
}
}
/*
double scalewidth = Zoomimages.ActualWidth * ct.ScaleX;
double scleheight = Zoomimages.ActualHeight * ct.ScaleY;
double xdiff = Math.Max(0, (scalewidth - this.content.ActualWidth) / 2);
double ydiff = Math.Max(0, (scleheight - this.content.ActualHeight) / 2);
if (Math.Abs(ct.TranslateX) > xdiff)
ct.TranslateX = xdiff * Math.Sign(e.Delta.Translation.X);
if (Math.Abs(ct.TranslateY) > ydiff)
ct.TranslateY = ydiff * Math.Sign(e.Delta.Translation.Y);
* */
}
private bool intersetElemnets(FrameworkElement inner, FrameworkElement outer,bool contains)
{
GeneralTransform testTransform = inner.TransformToVisual(outer);
//
Rect boundsinner = new Rect(0,0,inner.ActualWidth,inner.ActualHeight);
Rect bboxouter = new Rect(0, 0, outer.ActualWidth, outer.ActualHeight);
Rect bboxinner = testTransform.TransformBounds(boundsinner);
if(contains)
{
return bboxinner.X > bboxouter.Y &&
bboxinner.Y > bboxouter.Y &&
bboxinner.Right < bboxouter.Right &&
bboxinner.Bottom < bboxouter.Bottom;
}
else
{
bboxouter.Intersect(bboxinner);
return !bboxouter.IsEmpty;
}
}
private void copytransform(CompositeTransform orig,CompositeTransform copy)
{
copy.TranslateX = orig.TranslateX;
copy.TranslateY = orig.TranslateY;
copy.ScaleX = orig.ScaleX;
copy.ScaleY = orig.ScaleY;
}
When my windows form loads the tool strip menu item bar is there but the items inside it are not shown until I hover over them or press alt.
Also, my colordialog box wont open until after I click the change color icon in my menu and then press Alt.
I've had a look through the properties to make sure there is no hide property on or something but I can't seem to find anything.
I've posted some links below to show you what's happening.
When it opens up: http://gyazo.com/c1f4fa4d27e3f54a65b1f8a3da6cd0da
When I press alt or hover over menu: http://gyazo.com/c86c5dfb723647c025f89a0c14da6766
Not sure what code to put in.
Changing color bit:
private void changeColourToolStripMenuItem_Click(object sender, EventArgs e)
{
DialogResult result = colorDialog1.ShowDialog();
}
I just dragged the elements on from the toolbox.
All Code:
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace Assignment
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
init();
start();
this.DoubleBuffered = true;
}
//code to convert HSB to RGB from HSB.cs. All your code so i made it take up less space.
public struct HSBColor
{
float h;
float s;
float b;
int a;
public HSBColor(float h, float s, float b) { this.a = 0xff; this.h = Math.Min(Math.Max(h, 0), 255); this.s = Math.Min(Math.Max(s, 0), 255); this.b = Math.Min(Math.Max(b, 0), 255); }
public HSBColor(int a, float h, float s, float b) { this.a = a; this.h = Math.Min(Math.Max(h, 0), 255); this.s = Math.Min(Math.Max(s, 0), 255); this.b = Math.Min(Math.Max(b, 0), 255); }
public float H { get { return h; } }
public float S { get { return s; } }
public float B { get { return b; } }
public int A { get { return a; } }
public Color Color { get { return FromHSB(this); } }
public static Color FromHSB(HSBColor hsbColor)
{
float r = hsbColor.b;
float g = hsbColor.b;
float b = hsbColor.b;
if (hsbColor.s != 0)
{
float max = hsbColor.b; float dif = hsbColor.b * hsbColor.s / 255f; float min = hsbColor.b - dif; float h = hsbColor.h * 360f / 255f;
if (h < 60f) { r = max; g = h * dif / 60f + min; b = min; }
else if (h < 120f) { r = -(h - 120f) * dif / 60f + min; g = max; b = min; }
else if (h < 180f) { r = min; g = max; b = (h - 120f) * dif / 60f + min; }
else if (h < 240f) { r = min; g = -(h - 240f) * dif / 60f + min; b = max; }
else if (h < 300f) { r = (h - 240f) * dif / 60f + min; g = min; b = max; }
else if (h <= 360f) { r = max; g = min; b = -(h - 360f) * dif / 60 + min; }
else { r = 0; g = 0; b = 0; }
}
return Color.FromArgb(hsbColor.a, (int)Math.Round(Math.Min(Math.Max(r, 0), 255)), (int)Math.Round(Math.Min(Math.Max(g, 0), 255)), (int)Math.Round(Math.Min(Math.Max(b, 0), 255)));
}
}
private const int MAX = 256; // max iterations
private const double SX = -2.025; // start value real
private const double SY = -1.125; // start value imaginary
private const double EX = 0.6; // end value real
private const double EY = 1.125; // end value imaginary
private static int x1, y1, xs, ys, xe, ye;
private static double xstart, ystart, xende, yende, xzoom, yzoom;
private static float xy;
private int c = 0;
//private Image picture; Taken out, not needed
// create rectangle variable JGB
Rectangle rec;
private Graphics g1;
//private Cursor c1, c2; Taken out, not needed
private System.Drawing.Bitmap bitmap;
public void init()
{
//setSize(640, 480); changed this code to JGB:
this.Size = new Size(640, 480);
// Taken all lines out below. Not needed.
/*finished = false;
addMouseListener(this);
addMouseMotionListener(this);
c1 = new Cursor(Cursor.WAIT_CURSOR);
c2 = new Cursor(Cursor.CROSSHAIR_CURSOR); */
x1 = 640;
y1 = 480;
xy = (float)x1 / (float)y1;
//picture = createImage(x1, y1); Taken out and replaced with JGB:
bitmap = new Bitmap(x1, y1);
//g1 = picture.getGraphics(); changed to get my bitmap
g1 = Graphics.FromImage(bitmap);
//finished = true; Finished variable deleted so not needed
}
//Code below didnt appear to do anything so i deleted it
/*public void destroy() // delete all instances
{
if (finished)
{
removeMouseListener(this);
removeMouseMotionListener(this);
picture = null;
g1 = null;
c1 = null;
c2 = null;
System.gc(); // garbage collection
}
} */
public void start()
{
//action = false;
//rectangle = false;
initvalues();
// added dialog box for instance loading and save varaibles needed for position and zoom to text file
DialogResult dialog = MessageBox.Show("Would You Like to Load Your Last Instance?", "Load Instance?", MessageBoxButtons.YesNoCancel, MessageBoxIcon.Question);
if (dialog == DialogResult.Yes)
{
string[] lines = System.IO.File.ReadAllLines(#"C:\Users\Public\Writelines.txt");
xzoom = System.Convert.ToDouble(lines[0]);
yzoom = System.Convert.ToDouble(lines[1]);
xstart = System.Convert.ToDouble(lines[2]);
ystart = System.Convert.ToDouble(lines[3]);
}
else
{
xzoom = (xende - xstart) / (double)x1;
yzoom = (yende - ystart) / (double)y1;
}
mandelbrot();
}
public void stop()
{
}
/*public void paint(Graphics g, PaintEventArgs e)
{
update(g);
}
public void update(Graphics g)
{
//g.DrawImage(picture, 0, 0);
}*/
private void mandelbrot()
{
int x, y;
float h, b, alt = 0.0f;
Color color;
Pen pen = new Pen(Color.Black);
for (x = 0; x < x1; x += 2)
for (y = 0; y < y1; y++)
{
h = pointcolour(xstart + xzoom * (double)x, ystart + yzoom * (double)y, c);
if (h != alt)
{
b = 1.0f - h * h;
color = HSBColor.FromHSB(new HSBColor(h * 255, 0.8f * 255, b * 255));
pen = new Pen(color);
alt = h;
}
g1.DrawLine(pen, x, y, x + 1, y);
}
}
private float pointcolour(double xwert, double ywert, int j)
{
double r = 0.0, i = 0.0, m = 0.0;
// int j = 0;
while ((j < MAX) && (m < 4.0))
{
j++;
m = r * r - i * i;
i = 2.0 * r * i + ywert;
r = m + xwert;
}
return (float)j / (float)MAX;
}
private void initvalues()
{
xstart = SX;
ystart = SY;
xende = EX;
yende = EY;
if ((float)((xende - xstart) / (yende - ystart)) != xy)
xstart = xende - (yende - ystart) * (double)xy;
}
private void Form1_Paint(object sender, PaintEventArgs e)
{
Graphics g1 = e.Graphics;
g1.DrawImage(bitmap, 0, 0, x1, y1);
using (Pen pen = new Pen(Color.White, 2))
{
e.Graphics.DrawRectangle(pen, rec);
}
Invalidate();
}
//added load method
private void Form1_MouseMove(object sender, MouseEventArgs e)
{
if (e.Button == MouseButtons.Left)
{
xe = e.X;
ye = e.Y;
if (xs < xe)
{
if (ys < ye) rec = new Rectangle(xs, ys, (xe - xs), (ye - ys));
else rec = new Rectangle(xs, ye, (xe - xs), (ys - ye));
}
else
{
if (ys < ye) rec = new Rectangle(xe, ys, (xs - xe), (ye - ys));
else rec = new Rectangle(xe, ye, (xs - xe), (ys - ye));
}
this.Invalidate();
}
}
private void Form1_MouseDown(object sender, MouseEventArgs e)
{
if (e.Button == MouseButtons.Left)
{
// e.consume();
xs = e.X;
ys = e.Y; // starting point y
this.Invalidate();
}
}
private void Form1_MouseUp(object sender, MouseEventArgs e)
{
rec = new Rectangle(0, 0, 0, 0);
if (e.Button == MouseButtons.Left)
{
int z, w;
//e.consume();
//xe = e.X;
//ye = e.Y;
if (xs > xe)
{
z = xs;
xs = xe;
xe = z;
}
if (ys > ye)
{
z = ys;
ys = ye;
ye = z;
}
w = (xe - xs);
z = (ye - ys);
if ((w < 2) && (z < 2)) initvalues();
else
{
if (((float)w > (float)z * xy)) ye = (int)((float)ys + (float)w / xy);
else xe = (int)((float)xs + (float)z * xy);
xende = xstart + xzoom * (double)xe;
yende = ystart + yzoom * (double)ye;
xstart += xzoom * (double)xs;
ystart += yzoom * (double)ys;
}
xzoom = (xende - xstart) / (double)x1;
yzoom = (yende - ystart) / (double)y1;
mandelbrot();
string stringxzoom = xzoom.ToString();
string stringyzoom = yzoom.ToString();
string stringystart = ystart.ToString();
string stringxstart = xstart.ToString();
string[] lines = { stringxzoom, stringyzoom, stringxstart, stringystart };
System.IO.File.WriteAllLines(#"C:\Users\Public\Writelines.txt", lines);
this.Invalidate();
//Repaint();
}
}
private void saveToolStripMenuItem_Click(object sender, EventArgs e)
{
dialog.InitialDirectory =System.Environment.GetFolderPath(Environment.SpecialFolder.Personal);
dialog.Title = "Save Image";
dialog.FileName = "";
dialog.Filter = "JPEG|*.jpg";
dialog.ShowDialog();
}
private void restartToolStripMenuItem_Click(object sender, EventArgs e)
{
Application.Restart();
}
private void exitToolStripMenuItem1_Click(object sender, EventArgs e)
{
Application.Exit();
}
private void changeColourToolStripMenuItem_Click(object sender, EventArgs e)
{
colorDialog1.ShowDialog();
}
private void menuToolStripMenuItem_Click(object sender, EventArgs e)
{
}
private void menuStrip1_ItemClicked(object sender, ToolStripItemClickedEventArgs e)
{
}
}
}
Ok so after hours of trying to figure this out i found the solution. A random invalidate was messing it up.
Thanks anyway to #Sjips for the fast help.