[chronojump] New animation for Chronojump 2.1

[Xavier de Blas <xaviblas src gnome org>]

commit 8b40501bd28f2a5b3dad8a50c5d21e48f6a71dd1
Author: Xavier de Blas <xaviblas gmail com>
Date:   Thu Dec 31 12:01:35 2020 +0100

    New animation for Chronojump 2.1

 src/gui/app1/chronojumpLogo.cs | 17 +++++++++++++----
 1 file changed, 13 insertions(+), 4 deletions(-)
---
diff --git a/src/gui/app1/chronojumpLogo.cs b/src/gui/app1/chronojumpLogo.cs
index a956abcb..ef7543c6 100644
--- a/src/gui/app1/chronojumpLogo.cs
+++ b/src/gui/app1/chronojumpLogo.cs
@@ -32,6 +32,8 @@ public class ChronojumpLogo
        private bool timer;
        private double alpha;
        private double size;
+       private double xpos;
+       private double ypos;
        private Stopwatch stopwatch1;
        private Stopwatch stopwatch2;
        private Stopwatch stopwatch3;
@@ -61,6 +63,8 @@ public class ChronojumpLogo
                timer = true;
                alpha = 1.0;
                size = 1.0;
+               xpos = 0;
+               ypos = .5;
                stopwatch1 = new Stopwatch();
                stopwatch2 = new Stopwatch();
                stopwatch3 = new Stopwatch();
@@ -90,8 +94,13 @@ public class ChronojumpLogo
        {
                 Cairo.Context cr =  Gdk.CairoHelper.Create(drawingarea.GdkWindow);
 
-                int x = drawingarea.Allocation.Width / 2;
-                int y = drawingarea.Allocation.Height / 2;
+               double elapsedMs1 = stopwatch1.Elapsed.TotalMilliseconds;
+
+               xpos = UtilAll.DivideSafeFraction(elapsedMs1, 500);
+               ypos = Math.Pow(xpos,3);
+
+                int x = Convert.ToInt32(xpos * drawingarea.Allocation.Width / 2);
+                int y = Convert.ToInt32(ypos * drawingarea.Allocation.Height / 2);
 
                 cr.SetSourceRGB(.055, .118, .275);
                 cr.Paint();
@@ -103,7 +112,7 @@ public class ChronojumpLogo
                bool showVersion = false;
                if (size <= 80)
                        //size += 0.6;
-                       size = stopwatch1.Elapsed.TotalMilliseconds / 20.0;
+                       size = elapsedMs1 / 20.0;
 
                if(size > 20)
                {
@@ -133,7 +142,7 @@ public class ChronojumpLogo
                 cr.SetFontSize(size);
                 cr.SetSourceRGB(1, 1, 1);
 
-               string  message = "CHRONOJUMP   2.0";
+               string  message = "CHRONOJUMP   2.1";
                 TextExtents extents = cr.TextExtents(message);
 
                 cr.MoveTo(x - extents.Width/2, y + extents.Height/2);