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/*
* This file is part of the Circuit Python project, https://github.com/adafruit/circuitpython
*
* The MIT License (MIT)
*
* Copyright (c) 2018 Roy Hooper
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "py/obj.h"
#include "py/mphal.h"
#include "py/runtime.h"
#include "py/objproperty.h"
#include "shared-bindings/_pixelbuf/__init__.h"
#include "shared-bindings/_pixelbuf/PixelBuf.h"
//| """A fast RGB(W) pixel buffer library for like NeoPixel and DotStar.
//|
//| The `_pixelbuf` module provides the :py:class:`PixelBuf` class to accelerate
//| RGB(W) strip/matrix manipulation, such as DotStar and Neopixel.
//|
//| Byteorders are configured with strings, such as "RGB" or "RGBD"."""
// TODO: Pull in docs from pypixelbuf.
//| def colorwheel(n: int) -> int:
//| """C implementation of the common wheel() function found in many examples.
//| Returns the colorwheel RGB value as an integer value for n (usable in :py:class:`PixelBuf`, neopixel, and dotstar)."""
//| ...
//|
//| def wheel(n: Any) -> Any:
//| """Use of wheel() is deprecated. Please use colorwheel()."""
//|
STATIC mp_obj_t pixelbuf_colorwheel(mp_obj_t n) {
return MP_OBJ_NEW_SMALL_INT(colorwheel(MP_OBJ_IS_SMALL_INT(n) ? MP_OBJ_SMALL_INT_VALUE(n) : mp_obj_float_get(n)));
}
STATIC MP_DEFINE_CONST_FUN_OBJ_1(pixelbuf_colorwheel_obj, pixelbuf_colorwheel);
const int32_t colorwheel(float pos) {
if (pos > 255) {
pos = pos - ((uint32_t)(pos / 256) * 256);
}
if (pos < 85)
return (uint8_t)(255 - (pos * 3)) << 16 | (uint8_t)(pos * 3) << 8;
else if (pos < 170) {
pos -= 85;
return (uint8_t)(255 - (pos * 3)) << 8 | (uint8_t)(pos * 3);
} else {
pos -= 170;
return (uint8_t)(pos * 3) << 16 | (uint8_t)(255 - (pos * 3));
}
}
STATIC const mp_rom_map_elem_t pixelbuf_module_globals_table[] = {
{ MP_ROM_QSTR(MP_QSTR___name__), MP_ROM_QSTR(MP_QSTR__pixelbuf) },
{ MP_ROM_QSTR(MP_QSTR_PixelBuf), MP_ROM_PTR(&pixelbuf_pixelbuf_type) },
{ MP_ROM_QSTR(MP_QSTR_wheel), MP_ROM_PTR(&pixelbuf_colorwheel_obj) },
{ MP_ROM_QSTR(MP_QSTR_colorwheel), MP_ROM_PTR(&pixelbuf_colorwheel_obj) },
};
STATIC MP_DEFINE_CONST_DICT(pixelbuf_module_globals, pixelbuf_module_globals_table);
const mp_obj_module_t pixelbuf_module = {
.base = { &mp_type_module },
.globals = (mp_obj_dict_t*)&pixelbuf_module_globals,
};
|
