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Image pixel acces, through Image.pixels as floating point values.

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It's not the most efficient solution, but this can be optimized later. It's
best to copy out all the pixels at once into a list, rather than accessing
them one by one.
This commit is contained in:
Brecht Van Lommel 2011-04-03 16:17:39 +00:00
parent 480b9dca64
commit 993e9d4c46
1 changed files with 77 additions and 0 deletions
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77
source/blender/makesrna/intern/rna_image.c
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@ -243,6 +243,76 @@ static int rna_Image_depth_get(PointerRNA *ptr)
return depth;
}
static int rna_Image_pixels_get_length(PointerRNA *ptr, int length[RNA_MAX_ARRAY_DIMENSION])
{
Image *ima= ptr->id.data;
ImBuf *ibuf;
void *lock;
ibuf= BKE_image_acquire_ibuf(ima, NULL, &lock);
if(ibuf) {
length[0]= ibuf->x*ibuf->y;
length[1]= ibuf->channels;
}
else {
length[0]= 0;
length[1]= 0;
}
BKE_image_release_ibuf(ima, lock);
return length[0]*length[1];
}
static void rna_Image_pixels_get(PointerRNA *ptr, float *values)
{
Image *ima= ptr->id.data;
ImBuf *ibuf;
void *lock;
int i, size;
ibuf= BKE_image_acquire_ibuf(ima, NULL, &lock);
if(ibuf) {
size= ibuf->x*ibuf->y*ibuf->channels;
if(ibuf->rect_float) {
memcpy(values, ibuf->rect_float, sizeof(float)*size);
}
else {
for(i = 0; i < size; i++)
values[i] = ((unsigned char*)ibuf->rect)[i]*(1.0f/255.0f);
}
}
BKE_image_release_ibuf(ima, lock);
}
static void rna_Image_pixels_set(PointerRNA *ptr, const float *values)
{
Image *ima= ptr->id.data;
ImBuf *ibuf;
void *lock;
int i, size;
ibuf= BKE_image_acquire_ibuf(ima, NULL, &lock);
if(ibuf) {
size= ibuf->x*ibuf->y*ibuf->channels;
if(ibuf->rect_float) {
memcpy(ibuf->rect_float, values, sizeof(float)*size);
}
else {
for(i = 0; i < size; i++)
((unsigned char*)ibuf->rect)[i] = FTOCHAR(values[i]);
}
}
BKE_image_release_ibuf(ima, lock);
}
#else
static void rna_def_imageuser(BlenderRNA *brna)
@ -489,6 +559,13 @@ static void rna_def_image(BlenderRNA *brna)
RNA_def_property_int_funcs(prop, "rna_Image_size_get" , NULL, NULL);
RNA_def_property_clear_flag(prop, PROP_EDITABLE);
prop= RNA_def_property(srna, "pixels", PROP_FLOAT, PROP_NONE);
RNA_def_property_flag(prop, PROP_DYNAMIC);
RNA_def_property_multi_array(prop, 2, NULL);
RNA_def_property_ui_text(prop, "Pixels", "Image pixels in floating point values");
RNA_def_property_dynamic_array_funcs(prop, "rna_Image_pixels_get_length");
RNA_def_property_float_funcs(prop, "rna_Image_pixels_get", "rna_Image_pixels_set", NULL);
RNA_api_image(srna);
}