Pdc-transform NPM

pdc-transform

Adds rotation and scale to PDC drawing commands on Pebble, by defining a function pdc_transform_gdraw_command_image_draw_transformed. In addition to the standard gdraw_command_image_draw this allows to specify a rotation and scale.

Interface

void pdc_transform_gdraw_command_image_draw_transformed(GContext * ctx, GDrawCommandImage * image, GPoint offset, int scale10, int rotation, GColor fill_color, GColor stroke_color, int stroke_width);

scale10: scaling factor times 10. For example a scale of 1.5 equals scale10=15

rotation: rotation angle in degrees

fill_color: custom fill color applied to the PDC

stroke_color: custom stroke color applied to the PDC

stroke_width: override the default stroke width in the PDC (=0 to use the standard one)

void pdc_transform_scale_image(GDrawCommandImage * image, int scale10);

void pdc_transform_rotate_image(GDrawCommandImage * image, int rotation);

void pdc_transform_recolor_image(GDrawCommandImage * image, GColor fill_color, GColor stroke_color);

Usage

Run pebble package install pdc-transform.
Include the library in any C files that will use it:

#include <pdc-transform/pdc-transform.h>

pdc_transform_gdraw_command_image_draw_transformed will make a copy of the GDrawCommandImage internally such as to leave your original unharmed.
The other functions will modify the passed in GDrawCommandImage.
This repository contains a sample app that cycles through 64 standard PDCs provided by Pebble and shows what can be created using this little library.

screenshot