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float output from worley

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no need to int it
This commit is contained in:
John Cupitt 2016-08-11 21:51:58 +01:00
parent 3f5e890450
commit 88252e6794
2 changed files with 10 additions and 9 deletions
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2
TODO
View File

@ -7,8 +7,6 @@
- redo conva ... make a cumulative image and sub distances in that
- worley could output float distance by default?
- add more webp tests to py suite
- try moving some more of the CLI tests to py

17
libvips/create/worley.c
View File

@ -1,6 +1,9 @@
/* Worley noise generator.
*
* 19/7/16
*
* 11/8/16
* - float output
*/
/*
@ -215,7 +218,7 @@ vips_worley_start( VipsImage *out, void *a, void *b )
return( seq );
}
static int
static float
vips_hypot( int x, int y )
{
/* Faster than hypot() for int args.
@ -223,10 +226,10 @@ vips_hypot( int x, int y )
return( sqrt( x * x + y * y ) );
}
static int
static float
vips_worley_distance( VipsWorley *worley, Cell cells[9], int x, int y )
{
int distance;
float distance;
int i, j;
@ -236,7 +239,7 @@ vips_worley_distance( VipsWorley *worley, Cell cells[9], int x, int y )
Cell *cell = &cells[i];
for( j = 0; j < cell->n_features; j++ ) {
int d = vips_hypot(
float d = vips_hypot(
x - cell->feature_x[j],
y - cell->feature_y[j] );
@ -258,7 +261,7 @@ vips_worley_gen( VipsRegion *or, void *vseq, void *a, void *b,
int x, y;
for( y = 0; y < r->height; y++ ) {
int *q = (int *) VIPS_REGION_ADDR( or, r->left, r->top + y );
float *q = (float *) VIPS_REGION_ADDR( or, r->left, r->top + y );
for( x = 0; x < r->width; x++ ) {
int cell_x = (r->left + x) / worley->cell_size;
@ -300,7 +303,7 @@ vips_worley_build( VipsObject *object )
vips_image_init_fields( create->out,
worley->width, worley->height, 1,
VIPS_FORMAT_INT, VIPS_CODING_NONE, VIPS_INTERPRETATION_B_W,
VIPS_FORMAT_FLOAT, VIPS_CODING_NONE, VIPS_INTERPRETATION_B_W,
1.0, 1.0 );
vips_image_pipelinev( create->out,
VIPS_DEMAND_STYLE_ANY, NULL );
@ -365,7 +368,7 @@ vips_worley_init( VipsWorley *worley )
*
* * @cell_size: %gint, size of Worley cells
*
* Create a one-band int image of Worley noise. See:
* Create a one-band float image of Worley noise. See:
*
* https://en.wikipedia.org/wiki/Worley_noise
*