Function:s2arro
From S2PLOT
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s2arro
Draw an arrow from the point with world-coordinates (x1,y1,z1) to (x2,y2,z2).
Prototype
void s2arro(float x1, float y1, float z1,float x2, float y2, float z2);
Description
Draw an arrow from the point with world-coordinates (x1,y1,z1) to (x2,y2,z2). The size of the arrowhead at (x2,y2,z2) is controlled by the current character size (s2sch). The arrow style is set with s2sah.
See Also
| s2sch | Set the character height in "arbitrary" units. |
| s2sah | Set the style to be used for arrowheads drawn with s2arro. |
PGPLOT Equivalent
Code Example
#include <stdio.h>
#include <stdlib.h>
#include "s2plot.h"
int main(int argc, char *argv[])
{
float x1 = -0.3, x2 = +0.5; /* Arrow coordinates */
float y1 = +0.2, y2 = +0.1;
float z1 = -0.4, z2 = +0.8;
int fs = 1; /* Arrow fill style */
float angle = 30.0; /* Arrow cone head angle */
float barb = 0.7; /* Arrow barb level */
s2opend("/?",argc, argv); /* Open the display */
s2swin(-1.,1., -1.,1., -1.,1.); /* Set the window coordinates */
s2box("BCDET",0,0,"BCDET",0,0,"BCDET",0,0); /* Draw coordinate box */
s2sci(S2_PG_YELLOW);
s2sah(fs, angle, barb); /* Set arrow head style */
s2sch(5); /* Set size of arrow head */
s2arro(x1,y1,z1, x2,y2,z2); /* Draw an arrow */
s2show(1); /* Open the s2plot window */
return 1;
}
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