[Plplot-cvs] SF.net SVN: plplot:[12748] trunk/examples

[<and...@us...>]

Revision: 12748
          http://sourceforge.net/p/plplot/code/12748
Author:   andrewross
Date:     2013-11-25 06:30:00 +0000 (Mon, 25 Nov 2013)
Log Message:
-----------
Easier way to rescale the velocity vectors in example 22.

Modified Paths:
--------------
    trunk/examples/c/x22c.c
    trunk/examples/c++/x22.cc

Modified: trunk/examples/c/x22c.c
===================================================================
--- trunk/examples/c/x22c.c	2013-11-24 22:01:17 UTC (rev 12747)
+++ trunk/examples/c/x22c.c	2013-11-25 06:30:00 UTC (rev 12748)
@@ -30,11 +30,11 @@
 void potential( void );
 void f2mnmx( PLFLT **f, PLINT nx, PLINT ny, PLFLT *fnmin, PLFLT *fnmax );
 
-// Pairs of points making the line segments used to plot the user defined arrow
-static PLFLT arrow_x[6] = { -1.0, 1.0, 0.6, 1.0, 0.6, 1.0 };
-static PLFLT arrow_y[6] = { 0.0, 0.0, 0.4, 0.0, -0.4, 0.0 };
-static PLFLT arrow2_x[6] = { -1.0, 0.6, 0.6, 1.0, 0.6, 0.6 };
-static PLFLT arrow2_y[6] = { 0.0, 0.0, 0.4, 0.0, -0.4, 0.0 };
+// Pairs of points making the line segments used to plot the user defined arroW
+static PLFLT arrow_x[6]  = { -0.5, 0.5, 0.3, 0.5, 0.3, 0.5 };
+static PLFLT arrow_y[6]  = { 0.0, 0.0, 0.2, 0.0, -0.2, 0.0 };
+static PLFLT arrow2_x[6] = { -0.5, 0.3, 0.3, 0.5, 0.3, 0.3 };
+static PLFLT arrow2_y[6] = { 0.0, 0.0, 0.2, 0.0, -0.2, 0.0 };
 
 //--------------------------------------------------------------------------
 // main
@@ -160,7 +160,7 @@
     sprintf( title, "#frPLplot Example 22 - constriction (arrow style %d)", astyle );
     pllab( "(x)", "(y)", title );
     plcol0( 2 );
-    plvect( (const PLFLT * const *) u, (const PLFLT * const *) v, nx, ny, -0.5, pltr2, (void *) &cgrid2 );
+    plvect( (const PLFLT * const *) u, (const PLFLT * const *) v, nx, ny, -1.0, pltr2, (void *) &cgrid2 );
     plcol0( 1 );
 
     plFree2dGrid( cgrid2.xg, nx, ny );
@@ -252,7 +252,7 @@
         xmin + dx / 2, xmax - dx / 2, ymin + dy / 2, ymax - dy / 2,
         clev, nc, 0, 1, 1.0, plfill, 1, NULL, NULL );
     plvect( (const PLFLT * const *) u, (const PLFLT * const *) v, nx, ny,
-        -0.5, pltr2, (void *) &cgrid2 );
+        -1.0, pltr2, (void *) &cgrid2 );
     // Plot edges using plpath (which accounts for coordinate transformation) rather than plline
     plpath( nseg, xmin, ymax, xmax, ymax );
     plpath( nseg, xmin, ymin, xmax, ymin );

Modified: trunk/examples/c++/x22.cc
===================================================================
--- trunk/examples/c++/x22.cc	2013-11-24 22:01:17 UTC (rev 12747)
+++ trunk/examples/c++/x22.cc	2013-11-25 06:30:00 UTC (rev 12748)
@@ -157,7 +157,7 @@
     sprintf( title, "#frPLplot Example 22 - constriction (arrow style %d)", astyle );
     pls->lab( "(x)", "(y)", title );
     pls->col0( 2 );
-    pls->vect( u, v, nx, ny, -0.5, plstream::tr2, (void *) &cgrid2 );
+    pls->vect( u, v, nx, ny, -1.0, plstream::tr2, (void *) &cgrid2 );
     pls->col0( 1 );
 }
 
@@ -211,7 +211,7 @@
         xmin + dx / 2, xmax - dx / 2, ymin + dy / 2, ymax - dy / 2,
 	clev, nc, 0, 1, 1.0, plstream::fill, 1, NULL, NULL );
     pls->vect( (const PLFLT * const *) u, (const PLFLT * const *) v, nx, ny,
-	-0.5, plstream::tr2, (void *) &cgrid2 );
+	-1.0, plstream::tr2, (void *) &cgrid2 );
     // Plot edges using plpath (which accounts for coordinate transformation) rather than plline
     pls->path( nseg, xmin, ymax, xmax, ymax );
     pls->path( nseg, xmin, ymin, xmax, ymin );
@@ -343,10 +343,10 @@
     bool  fill;
 
     // Set of points making a polygon to use as the arrow
-    PLFLT arrow_x[6] = { -1.0, 1.0, 0.6, 1.0, 0.6, 1.0 };
-    PLFLT arrow_y[6] = { 0.0, 0.0, 0.4, 0.0, -0.4, 0.0 };
-    PLFLT arrow2_x[6] = { -1.0, 0.6, 0.6, 1.0, 0.6, 0.6 };
-    PLFLT arrow2_y[6] = { 0.0, 0.0, 0.4, 0.0, -0.4, 0.0 };
+    PLFLT arrow_x[6]  = { -0.5, 0.5, 0.3, 0.5, 0.3, 0.5 };
+    PLFLT arrow_y[6]  = { 0.0, 0.0, 0.2, 0.0, -0.2, 0.0 };
+    PLFLT arrow2_x[6] = { -0.5, 0.3, 0.3, 0.5, 0.3, 0.3 };
+    PLFLT arrow2_y[6] = { 0.0, 0.0, 0.2, 0.0, -0.2, 0.0 };
 
     // Create new plstream
     pls = new plstream();

This was sent by the SourceForge.net collaborative development platform, the world's largest Open Source development site.