Function:ns2vplanett
From S2PLOT
ns2vplanett
Draw a planet with texture filename.
Prototype
void ns2vplanett(XYZ iP, float ir, COLOUR icol, char *itexturefn,float texture_phase, XYZ axis, float rotation);
Description
Draw a planet, which is a textured sphere whose texture can be "slid" around the planet, and the planet then rotated about an arbitrary axis. Texture phase is in the range [0..1], while rotation angle is in degrees.
See Also
| ns2vplanetx | Draw a planet - vector input. |
| ns2vsphere | Draw a sphere, with a given centre, radius and colour - vector input. |
| ns2spheret | Draw a textured sphere, with given centre, radius, colour and texture filename |
| ns2vspheret | Draw a textured sphere, with given centre, radius, colour and texture filename - vector input. |
| ns2spherex | Draw a textured sphere, with given centre, radius, colour and texture ID |
| ns2vspherex | Draw a textured sphere, with given centre, radius, colour and texture ID - vector input. |
| ns2sphere | Draw a sphere. |
Code Example
#include <stdio.h>
#include <stdlib.h>
#include "s2plot.h"
void cb(double *t, int *kc)
{
float radius = 0.5; /* Radius of planet */
XYZ xyz = { -1.0, 0.0, 0.0 }; /* Location of planet */
static char *texture = "firetile2_pow2_rgb.tga"; /* Texture filename */
COLOUR colour = { 1.0, 1.0, 0.0 }; /* Yellow */
static float phase = 30.0; /* Set the texture phase */
XYZ axis = { 0.0, 0.0, 1.0 }; /* Set the rotation axis */
static float rotation = 0.0; /* Set the rotation value */
ns2vplanett(xyz, radius, colour, texture, phase, axis, rotation);
/* Draw the "planet" */
xyz.x = 0.0; /* Shift centre */
axis.x = 0.0; axis.y = 1.0; axis.z = 0.0; /* New rotation axis */
ns2vplanett(xyz, radius, colour, texture, phase, axis, rotation);
/* Draw the "planet" */
xyz.x = 1.0; /* Shift centre */
axis.x = 1.0; axis.y = 0.0; axis.z = 0.0; /* New rotation axis */
ns2vplanett(xyz, radius, colour, texture, phase, axis, rotation);
/* Draw the "planet" */
rotation += 1.0; /* Update rotation in degrees */
if (rotation > 360.0) rotation = 0.0; /* Full circle? Reset */
}
int main(int argc, char *argv[])
{
s2opend("/?",argc, argv); /* Open the display */
s2swin(-1.,1., -1.,1., -1.,1.); /* Set the window coordinates */
ss2ssr(32); /* Set the sphere resolution */
cs2scb(cb); /* Install dynamic callback */
s2show(1); /* Open the s2plot window */
return 1;
}
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