[Gzz-commits] journals jvk

[Janne V. Kujala]

CVSROOT:        /cvsroot/fenfire
Module name:    journals
Branch:         
Changes by:     Janne V. Kujala <address@hidden>        03/07/09 05:00:23

Modified files:
        .              : jvk 

Log message:
        update

CVSWeb URLs:
http://savannah.gnu.org/cgi-bin/viewcvs/fenfire/journals/jvk.diff?tr1=1.54&tr2=1.55&r1=text&r2=text

Patches:
Index: journals/jvk
diff -u journals/jvk:1.54 journals/jvk:1.55
--- journals/jvk:1.54   Fri Jul  4 14:39:59 2003
+++ journals/jvk        Wed Jul  9 05:00:23 2003
@@ -27,9 +27,6 @@
     - first draft of vob article
        - VAIN RANSKALAISIA VIIVOJA
 
-2003-06-14 - 2003-06-22: Vacation
-
-
 2003-06-13:
     - irregu real experiments start
 
@@ -46,7 +43,35 @@
 Past:
 =============
 
-2003-07-01 - 2003-04:
+2003-07-09:
+    - thickness and angle scaling
+    - thinking about the experiment tasks
+       - How to highlight nodes? Draw a ring as in cgoban?
+         Change the color and interpolate to the middle of the connection?
+         Should the connector between two highlighted nodes become 
+         highlighted?
+       - Is a static graph (compiled in a displaylist) enough?
+         It can still be rotated.
+
+2003-07-07 - 2003-07-08:
+    - thought about surface tension and 3D area--volume optimization
+       - Mean curvature multiplied by surface tension is proportional 
+         to the pressure difference (Laplace-Young equation).
+       - Pareto-optimal points of area--volume optimization problems 
+         have constant mean curvature, which is analogous to the
+         constant curvature solutions of the 2D length--area optimization.
+       - The only constant curvature surfaces of revolution are
+         catenoid (roulette of a parabola), unduloid (roulette of an ellipse),
+         and nodoid (roulette of a hyperbola, not embedded).
+         Plane, cylinder, and sphere are special cases of the above.
+        - The shape of a droplet is the result of downward linearly increasing
+         mean curvature (as the pressure builds up).
+       - The mean curvature of the (stretched)circuloidal fillet jumps 
+         down as it leaves the spherical node (mean curvature 1/radius)  
+         and then increases to the maximum (approx. 0.5/thickness) at the 
+         middle of the connection.
+
+2003-07-01 - 2003-05:
     - fillets 3d blending work (change modes with "m"/"M", see also "i")
        - Implemented an interpolated lookup table for computing the distance
          from the center of the node to the fillet at a given direction
@@ -76,6 +101,7 @@
          stretching distorts the line-width of the grid anisotropically
         - computing lower-detail mipmap levels with thicker
          lines produces the same effect as the line polygon mode:
+         the thinnest part looks solid
 
 2003-06-30:
     - fillets npr edge work and abstracting
@@ -94,16 +120,9 @@
          using numeric solution for the 6th deg eq
        - solving geometry problems
 
-2003-06-13:
-    - fillets work
-
-2003-06-12:
-    - fillets work
-
-2003-06-11:
-    - fillets work
+2003-06-14 - 2003-06-22: Vacation
 
-2003-06-10:
+2003-06-10 - 2003-06-14:
     - fillets work
 
 2003-06-09: savannah down