diff --git a/docs/library/framebuf.rst b/docs/library/framebuf.rst index 098ada815384..78ae0c1c346b 100644 --- a/docs/library/framebuf.rst +++ b/docs/library/framebuf.rst @@ -11,8 +11,8 @@ class FrameBuffer ----------------- The FrameBuffer class provides a pixel buffer which can be drawn upon with -pixels, lines, rectangles, text and even other FrameBuffer's. It is useful -when generating output for displays. +pixels, lines, rectangles, ellipses, polygons, text and even other +FrameBuffers. It is useful when generating output for displays. For example:: @@ -77,12 +77,37 @@ The following methods draw shapes onto the FrameBuffer. methods draw horizontal and vertical lines respectively up to a given length. -.. method:: FrameBuffer.rect(x, y, w, h, c) -.. method:: FrameBuffer.fill_rect(x, y, w, h, c) +.. method:: FrameBuffer.rect(x, y, w, h, c[, f]) - Draw a rectangle at the given location, size and color. The `rect` - method draws only a 1 pixel outline whereas the `fill_rect` method - draws both the outline and interior. + Draw a rectangle at the given location, size and color. + + The optional *f* parameter can be set to ``True`` to fill the rectangle. + Otherwise just a one pixel outline is drawn. + +.. method:: FrameBuffer.ellipse(x, y, xr, yr, c[, f, m]) + + Draw an ellipse at the given location. Radii *xr* and *yr* define the + geometry; equal values cause a circle to be drawn. The *c* parameter + defines the color. + + The optional *f* parameter can be set to ``True`` to fill the ellipse. + Otherwise just a one pixel outline is drawn. + + The optional *m* parameter enables drawing to be restricted to certain + quadrants of the ellipse. The LS four bits determine which quadrants are + to be drawn, with bit 0 specifying Q1, b1 Q2, b2 Q3 and b3 Q4. Quadrants + are numbered counterclockwise with Q1 being top right. + +.. method:: FrameBuffer.poly(x, y, coords, c[, f]) + + Given a list of coordinates, draw an arbitrary (convex or concave) closed + polygon at the given x, y location using the given color. + + The *coords* must be specified as a :mod:`array` of integers, e.g. + ``array('h', [x0, y0, x1, y1, ... xn, yn])``. + + The optional *f* parameter can be set to ``True`` to fill the polygon. + Otherwise just a one pixel outline is drawn. Drawing text ------------ diff --git a/examples/natmod/framebuf/framebuf.c b/examples/natmod/framebuf/framebuf.c index 8d488cffd685..53fb90c625ad 100644 --- a/examples/natmod/framebuf/framebuf.c +++ b/examples/natmod/framebuf/framebuf.c @@ -12,7 +12,7 @@ mp_obj_type_t mp_type_framebuf; #include "extmod/modframebuf.c" -mp_map_elem_t framebuf_locals_dict_table[10]; +mp_map_elem_t framebuf_locals_dict_table[11]; STATIC MP_DEFINE_CONST_DICT(framebuf_locals_dict, framebuf_locals_dict_table); mp_obj_t mpy_init(mp_obj_fun_bc_t *self, size_t n_args, size_t n_kw, mp_obj_t *args) { @@ -29,9 +29,10 @@ mp_obj_t mpy_init(mp_obj_fun_bc_t *self, size_t n_args, size_t n_kw, mp_obj_t *a framebuf_locals_dict_table[4] = (mp_map_elem_t){ MP_OBJ_NEW_QSTR(MP_QSTR_vline), MP_OBJ_FROM_PTR(&framebuf_vline_obj) }; framebuf_locals_dict_table[5] = (mp_map_elem_t){ MP_OBJ_NEW_QSTR(MP_QSTR_rect), MP_OBJ_FROM_PTR(&framebuf_rect_obj) }; framebuf_locals_dict_table[6] = (mp_map_elem_t){ MP_OBJ_NEW_QSTR(MP_QSTR_line), MP_OBJ_FROM_PTR(&framebuf_line_obj) }; - framebuf_locals_dict_table[7] = (mp_map_elem_t){ MP_OBJ_NEW_QSTR(MP_QSTR_blit), MP_OBJ_FROM_PTR(&framebuf_blit_obj) }; - framebuf_locals_dict_table[8] = (mp_map_elem_t){ MP_OBJ_NEW_QSTR(MP_QSTR_scroll), MP_OBJ_FROM_PTR(&framebuf_scroll_obj) }; - framebuf_locals_dict_table[9] = (mp_map_elem_t){ MP_OBJ_NEW_QSTR(MP_QSTR_text), MP_OBJ_FROM_PTR(&framebuf_text_obj) }; + framebuf_locals_dict_table[7] = (mp_map_elem_t){ MP_OBJ_NEW_QSTR(MP_QSTR_ellipse), MP_OBJ_FROM_PTR(&framebuf_ellipse_obj) }; + framebuf_locals_dict_table[8] = (mp_map_elem_t){ MP_OBJ_NEW_QSTR(MP_QSTR_blit), MP_OBJ_FROM_PTR(&framebuf_blit_obj) }; + framebuf_locals_dict_table[9] = (mp_map_elem_t){ MP_OBJ_NEW_QSTR(MP_QSTR_scroll), MP_OBJ_FROM_PTR(&framebuf_scroll_obj) }; + framebuf_locals_dict_table[10] = (mp_map_elem_t){ MP_OBJ_NEW_QSTR(MP_QSTR_text), MP_OBJ_FROM_PTR(&framebuf_text_obj) }; mp_type_framebuf.locals_dict = (void*)&framebuf_locals_dict; mp_store_global(MP_QSTR_FrameBuffer, MP_OBJ_FROM_PTR(&mp_type_framebuf)); diff --git a/extmod/modframebuf.c b/extmod/modframebuf.c index 5b6575d5a650..bb1f4f631077 100644 --- a/extmod/modframebuf.c +++ b/extmod/modframebuf.c @@ -28,6 +28,7 @@ #include #include "py/runtime.h" +#include "py/binary.h" #if MICROPY_PY_FRAMEBUF @@ -240,11 +241,17 @@ STATIC mp_framebuf_p_t formats[] = { [FRAMEBUF_MHMSB] = {mono_horiz_setpixel, mono_horiz_getpixel, mono_horiz_fill_rect}, }; -static inline void setpixel(const mp_obj_framebuf_t *fb, unsigned int x, unsigned int y, uint32_t col) { +STATIC inline void setpixel(const mp_obj_framebuf_t *fb, unsigned int x, unsigned int y, uint32_t col) { formats[fb->format].setpixel(fb, x, y, col); } -static inline uint32_t getpixel(const mp_obj_framebuf_t *fb, unsigned int x, unsigned int y) { +STATIC void setpixel_checked(const mp_obj_framebuf_t *fb, mp_int_t x, mp_int_t y, mp_int_t col, mp_int_t mask) { + if (mask && 0 <= x && x < fb->width && 0 <= y && y < fb->height) { + setpixel(fb, x, y, col); + } +} + +STATIC inline uint32_t getpixel(const mp_obj_framebuf_t *fb, unsigned int x, unsigned int y) { return formats[fb->format].getpixel(fb, x, y); } @@ -263,21 +270,21 @@ STATIC void fill_rect(const mp_obj_framebuf_t *fb, int x, int y, int w, int h, u formats[fb->format].fill_rect(fb, x, y, xend - x, yend - y, col); } -STATIC mp_obj_t framebuf_make_new(const mp_obj_type_t *type, size_t n_args, size_t n_kw, const mp_obj_t *args) { +STATIC mp_obj_t framebuf_make_new(const mp_obj_type_t *type, size_t n_args, size_t n_kw, const mp_obj_t *args_in) { mp_arg_check_num(n_args, n_kw, 4, 5, false); mp_obj_framebuf_t *o = mp_obj_malloc(mp_obj_framebuf_t, type); - o->buf_obj = args[0]; + o->buf_obj = args_in[0]; mp_buffer_info_t bufinfo; - mp_get_buffer_raise(args[0], &bufinfo, MP_BUFFER_WRITE); + mp_get_buffer_raise(args_in[0], &bufinfo, MP_BUFFER_WRITE); o->buf = bufinfo.buf; - o->width = mp_obj_get_int(args[1]); - o->height = mp_obj_get_int(args[2]); - o->format = mp_obj_get_int(args[3]); + o->width = mp_obj_get_int(args_in[1]); + o->height = mp_obj_get_int(args_in[2]); + o->format = mp_obj_get_int(args_in[3]); if (n_args >= 5) { - o->stride = mp_obj_get_int(args[4]); + o->stride = mp_obj_get_int(args_in[4]); } else { o->stride = o->width; } @@ -305,6 +312,12 @@ STATIC mp_obj_t framebuf_make_new(const mp_obj_type_t *type, size_t n_args, size return MP_OBJ_FROM_PTR(o); } +STATIC void framebuf_args(const mp_obj_t *args_in, mp_int_t *args_out, int n) { + for (int i = 0; i < n; ++i) { + args_out[i] = mp_obj_get_int(args_in[i + 1]); + } +} + STATIC mp_int_t framebuf_get_buffer(mp_obj_t self_in, mp_buffer_info_t *bufinfo, mp_uint_t flags) { (void)flags; mp_obj_framebuf_t *self = MP_OBJ_TO_PTR(self_in); @@ -322,98 +335,75 @@ STATIC mp_obj_t framebuf_fill(mp_obj_t self_in, mp_obj_t col_in) { } STATIC MP_DEFINE_CONST_FUN_OBJ_2(framebuf_fill_obj, framebuf_fill); -STATIC mp_obj_t framebuf_fill_rect(size_t n_args, const mp_obj_t *args) { - (void)n_args; - - mp_obj_framebuf_t *self = MP_OBJ_TO_PTR(args[0]); - mp_int_t x = mp_obj_get_int(args[1]); - mp_int_t y = mp_obj_get_int(args[2]); - mp_int_t width = mp_obj_get_int(args[3]); - mp_int_t height = mp_obj_get_int(args[4]); - mp_int_t col = mp_obj_get_int(args[5]); - - fill_rect(self, x, y, width, height, col); - +STATIC mp_obj_t framebuf_fill_rect(size_t n_args, const mp_obj_t *args_in) { + mp_obj_framebuf_t *self = MP_OBJ_TO_PTR(args_in[0]); + mp_int_t args[5]; // x, y, w, h, col + framebuf_args(args_in, args, 5); + fill_rect(self, args[0], args[1], args[2], args[3], args[4]); return mp_const_none; } STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(framebuf_fill_rect_obj, 6, 6, framebuf_fill_rect); -STATIC mp_obj_t framebuf_pixel(size_t n_args, const mp_obj_t *args) { - mp_obj_framebuf_t *self = MP_OBJ_TO_PTR(args[0]); - mp_int_t x = mp_obj_get_int(args[1]); - mp_int_t y = mp_obj_get_int(args[2]); +STATIC mp_obj_t framebuf_pixel(size_t n_args, const mp_obj_t *args_in) { + mp_obj_framebuf_t *self = MP_OBJ_TO_PTR(args_in[0]); + mp_int_t x = mp_obj_get_int(args_in[1]); + mp_int_t y = mp_obj_get_int(args_in[2]); if (0 <= x && x < self->width && 0 <= y && y < self->height) { if (n_args == 3) { // get return MP_OBJ_NEW_SMALL_INT(getpixel(self, x, y)); } else { // set - setpixel(self, x, y, mp_obj_get_int(args[3])); + setpixel(self, x, y, mp_obj_get_int(args_in[3])); } } return mp_const_none; } STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(framebuf_pixel_obj, 3, 4, framebuf_pixel); -STATIC mp_obj_t framebuf_hline(size_t n_args, const mp_obj_t *args) { +STATIC mp_obj_t framebuf_hline(size_t n_args, const mp_obj_t *args_in) { (void)n_args; - mp_obj_framebuf_t *self = MP_OBJ_TO_PTR(args[0]); - mp_int_t x = mp_obj_get_int(args[1]); - mp_int_t y = mp_obj_get_int(args[2]); - mp_int_t w = mp_obj_get_int(args[3]); - mp_int_t col = mp_obj_get_int(args[4]); + mp_obj_framebuf_t *self = MP_OBJ_TO_PTR(args_in[0]); + mp_int_t args[4]; // x, y, w, col + framebuf_args(args_in, args, 4); - fill_rect(self, x, y, w, 1, col); + fill_rect(self, args[0], args[1], args[2], 1, args[3]); return mp_const_none; } STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(framebuf_hline_obj, 5, 5, framebuf_hline); -STATIC mp_obj_t framebuf_vline(size_t n_args, const mp_obj_t *args) { +STATIC mp_obj_t framebuf_vline(size_t n_args, const mp_obj_t *args_in) { (void)n_args; - mp_obj_framebuf_t *self = MP_OBJ_TO_PTR(args[0]); - mp_int_t x = mp_obj_get_int(args[1]); - mp_int_t y = mp_obj_get_int(args[2]); - mp_int_t h = mp_obj_get_int(args[3]); - mp_int_t col = mp_obj_get_int(args[4]); + mp_obj_framebuf_t *self = MP_OBJ_TO_PTR(args_in[0]); + mp_int_t args[4]; // x, y, h, col + framebuf_args(args_in, args, 4); - fill_rect(self, x, y, 1, h, col); + fill_rect(self, args[0], args[1], 1, args[2], args[3]); return mp_const_none; } STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(framebuf_vline_obj, 5, 5, framebuf_vline); -STATIC mp_obj_t framebuf_rect(size_t n_args, const mp_obj_t *args) { - (void)n_args; - - mp_obj_framebuf_t *self = MP_OBJ_TO_PTR(args[0]); - mp_int_t x = mp_obj_get_int(args[1]); - mp_int_t y = mp_obj_get_int(args[2]); - mp_int_t w = mp_obj_get_int(args[3]); - mp_int_t h = mp_obj_get_int(args[4]); - mp_int_t col = mp_obj_get_int(args[5]); - - fill_rect(self, x, y, w, 1, col); - fill_rect(self, x, y + h - 1, w, 1, col); - fill_rect(self, x, y, 1, h, col); - fill_rect(self, x + w - 1, y, 1, h, col); - +STATIC mp_obj_t framebuf_rect(size_t n_args, const mp_obj_t *args_in) { + mp_obj_framebuf_t *self = MP_OBJ_TO_PTR(args_in[0]); + mp_int_t args[5]; // x, y, w, h, col + framebuf_args(args_in, args, 5); + if (n_args > 6 && mp_obj_is_true(args_in[6])) { + fill_rect(self, args[0], args[1], args[2], args[3], args[4]); + } else { + fill_rect(self, args[0], args[1], args[2], 1, args[4]); + fill_rect(self, args[0], args[1] + args[3] - 1, args[2], 1, args[4]); + fill_rect(self, args[0], args[1], 1, args[3], args[4]); + fill_rect(self, args[0] + args[2] - 1, args[1], 1, args[3], args[4]); + } return mp_const_none; } -STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(framebuf_rect_obj, 6, 6, framebuf_rect); - -STATIC mp_obj_t framebuf_line(size_t n_args, const mp_obj_t *args) { - (void)n_args; - - mp_obj_framebuf_t *self = MP_OBJ_TO_PTR(args[0]); - mp_int_t x1 = mp_obj_get_int(args[1]); - mp_int_t y1 = mp_obj_get_int(args[2]); - mp_int_t x2 = mp_obj_get_int(args[3]); - mp_int_t y2 = mp_obj_get_int(args[4]); - mp_int_t col = mp_obj_get_int(args[5]); +STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(framebuf_rect_obj, 6, 7, framebuf_rect); +STATIC void line(const mp_obj_framebuf_t *fb, mp_int_t x1, mp_int_t y1, mp_int_t x2, mp_int_t y2, mp_int_t col) { mp_int_t dx = x2 - x1; mp_int_t sx; if (dx > 0) { @@ -452,12 +442,12 @@ STATIC mp_obj_t framebuf_line(size_t n_args, const mp_obj_t *args) { mp_int_t e = 2 * dy - dx; for (mp_int_t i = 0; i < dx; ++i) { if (steep) { - if (0 <= y1 && y1 < self->width && 0 <= x1 && x1 < self->height) { - setpixel(self, y1, x1, col); + if (0 <= y1 && y1 < fb->width && 0 <= x1 && x1 < fb->height) { + setpixel(fb, y1, x1, col); } } else { - if (0 <= x1 && x1 < self->width && 0 <= y1 && y1 < self->height) { - setpixel(self, x1, y1, col); + if (0 <= x1 && x1 < fb->width && 0 <= y1 && y1 < fb->height) { + setpixel(fb, x1, y1, col); } } while (e >= 0) { @@ -468,31 +458,250 @@ STATIC mp_obj_t framebuf_line(size_t n_args, const mp_obj_t *args) { e += 2 * dy; } - if (0 <= x2 && x2 < self->width && 0 <= y2 && y2 < self->height) { - setpixel(self, x2, y2, col); + if (0 <= x2 && x2 < fb->width && 0 <= y2 && y2 < fb->height) { + setpixel(fb, x2, y2, col); } +} + +STATIC mp_obj_t framebuf_line(size_t n_args, const mp_obj_t *args_in) { + (void)n_args; + + mp_obj_framebuf_t *self = MP_OBJ_TO_PTR(args_in[0]); + mp_int_t args[5]; // x1, y1, x2, y2, col + framebuf_args(args_in, args, 5); + + line(self, args[0], args[1], args[2], args[3], args[4]); return mp_const_none; } STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(framebuf_line_obj, 6, 6, framebuf_line); -STATIC mp_obj_t framebuf_blit(size_t n_args, const mp_obj_t *args) { - mp_obj_framebuf_t *self = MP_OBJ_TO_PTR(args[0]); - mp_obj_t source_in = mp_obj_cast_to_native_base(args[1], MP_OBJ_FROM_PTR(&mp_type_framebuf)); +// Q2 Q1 +// Q3 Q4 +#define ELLIPSE_MASK_FILL (0x10) +#define ELLIPSE_MASK_ALL (0x0f) +#define ELLIPSE_MASK_Q1 (0x01) +#define ELLIPSE_MASK_Q2 (0x02) +#define ELLIPSE_MASK_Q3 (0x04) +#define ELLIPSE_MASK_Q4 (0x08) + +STATIC void draw_ellipse_points(const mp_obj_framebuf_t *fb, mp_int_t cx, mp_int_t cy, mp_int_t x, mp_int_t y, mp_int_t col, mp_int_t mask) { + if (mask & ELLIPSE_MASK_FILL) { + if (mask & ELLIPSE_MASK_Q1) { + fill_rect(fb, cx, cy - y, x + 1, 1, col); + } + if (mask & ELLIPSE_MASK_Q2) { + fill_rect(fb, cx - x, cy - y, x + 1, 1, col); + } + if (mask & ELLIPSE_MASK_Q3) { + fill_rect(fb, cx - x, cy + y, x + 1, 1, col); + } + if (mask & ELLIPSE_MASK_Q4) { + fill_rect(fb, cx, cy + y, x + 1, 1, col); + } + } else { + setpixel_checked(fb, cx + x, cy - y, col, mask & ELLIPSE_MASK_Q1); + setpixel_checked(fb, cx - x, cy - y, col, mask & ELLIPSE_MASK_Q2); + setpixel_checked(fb, cx - x, cy + y, col, mask & ELLIPSE_MASK_Q3); + setpixel_checked(fb, cx + x, cy + y, col, mask & ELLIPSE_MASK_Q4); + } +} + +STATIC mp_obj_t framebuf_ellipse(size_t n_args, const mp_obj_t *args_in) { + mp_obj_framebuf_t *self = MP_OBJ_TO_PTR(args_in[0]); + mp_int_t args[5]; + framebuf_args(args_in, args, 5); // cx, cy, xradius, yradius, col + mp_int_t mask = (n_args > 6 && mp_obj_is_true(args_in[6])) ? ELLIPSE_MASK_FILL : 0; + if (n_args > 7) { + mask |= mp_obj_get_int(args_in[7]) & ELLIPSE_MASK_ALL; + } else { + mask |= ELLIPSE_MASK_ALL; + } + mp_int_t two_asquare = 2 * args[2] * args[2]; + mp_int_t two_bsquare = 2 * args[3] * args[3]; + mp_int_t x = args[2]; + mp_int_t y = 0; + mp_int_t xchange = args[3] * args[3] * (1 - 2 * args[2]); + mp_int_t ychange = args[2] * args[2]; + mp_int_t ellipse_error = 0; + mp_int_t stoppingx = two_bsquare * args[2]; + mp_int_t stoppingy = 0; + while (stoppingx >= stoppingy) { // 1st set of points, y' > -1 + draw_ellipse_points(self, args[0], args[1], x, y, args[4], mask); + y += 1; + stoppingy += two_asquare; + ellipse_error += ychange; + ychange += two_asquare; + if ((2 * ellipse_error + xchange) > 0) { + x -= 1; + stoppingx -= two_bsquare; + ellipse_error += xchange; + xchange += two_bsquare; + } + } + // 1st point set is done start the 2nd set of points + x = 0; + y = args[3]; + xchange = args[3] * args[3]; + ychange = args[2] * args[2] * (1 - 2 * args[3]); + ellipse_error = 0; + stoppingx = 0; + stoppingy = two_asquare * args[3]; + while (stoppingx <= stoppingy) { // 2nd set of points, y' < -1 + draw_ellipse_points(self, args[0], args[1], x, y, args[4], mask); + x += 1; + stoppingx += two_bsquare; + ellipse_error += xchange; + xchange += two_bsquare; + if ((2 * ellipse_error + ychange) > 0) { + y -= 1; + stoppingy -= two_asquare; + ellipse_error += ychange; + ychange += two_asquare; + } + } + return mp_const_none; +} +STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(framebuf_ellipse_obj, 6, 8, framebuf_ellipse); + +#if MICROPY_PY_ARRAY && !MICROPY_ENABLE_DYNRUNTIME +// TODO: poly needs mp_binary_get_size & mp_binary_get_val_array which aren't +// available in dynruntime.h yet. + +STATIC mp_int_t poly_int(mp_buffer_info_t *bufinfo, size_t index) { + return mp_obj_get_int(mp_binary_get_val_array(bufinfo->typecode, bufinfo->buf, index)); +} + +STATIC mp_obj_t framebuf_poly(size_t n_args, const mp_obj_t *args_in) { + mp_obj_framebuf_t *self = MP_OBJ_TO_PTR(args_in[0]); + + mp_int_t x = mp_obj_get_int(args_in[1]); + mp_int_t y = mp_obj_get_int(args_in[2]); + + mp_buffer_info_t bufinfo; + mp_get_buffer_raise(args_in[3], &bufinfo, MP_BUFFER_READ); + // If an odd number of values was given, this rounds down to multiple of two. + int n_poly = bufinfo.len / (mp_binary_get_size('@', bufinfo.typecode, NULL) * 2); + + if (n_poly == 0) { + return mp_const_none; + } + + mp_int_t col = mp_obj_get_int(args_in[4]); + bool fill = n_args > 5 && mp_obj_is_true(args_in[5]); + + if (fill) { + // This implements an integer version of http://alienryderflex.com/polygon_fill/ + + // The idea is for each scan line, compute the sorted list of x + // coordinates where the scan line intersects the polygon edges, + // then fill between each resulting pair. + + // Restrict just to the scan lines that include the vertical extent of + // this polygon. + mp_int_t y_min = INT_MAX, y_max = INT_MIN; + for (int i = 0; i < n_poly; i++) { + mp_int_t py = poly_int(&bufinfo, i * 2 + 1); + y_min = MIN(y_min, py); + y_max = MAX(y_max, py); + } + + for (mp_int_t row = y_min; row <= y_max; row++) { + // Each node is the x coordinate where an edge crosses this scan line. + mp_int_t nodes[n_poly]; + int n_nodes = 0; + mp_int_t px1 = poly_int(&bufinfo, 0); + mp_int_t py1 = poly_int(&bufinfo, 1); + int i = n_poly * 2 - 1; + do { + mp_int_t py2 = poly_int(&bufinfo, i--); + mp_int_t px2 = poly_int(&bufinfo, i--); + + // Don't include the bottom pixel of a given edge to avoid + // duplicating the node with the start of the next edge. This + // will miss some pixels on the boundary, and in particular + // at a local minima or inflection point. + if (py1 != py2 && ((py1 > row && py2 <= row) || (py1 <= row && py2 > row))) { + mp_int_t node = (32 * px1 + 32 * (px2 - px1) * (row - py1) / (py2 - py1) + 16) / 32; + nodes[n_nodes++] = node; + } else if (row == MAX(py1, py2)) { + // At local-minima, try and manually fill in the pixels that get missed above. + if (py1 < py2) { + setpixel_checked(self, x + px2, y + py2, col, 1); + } else if (py2 < py1) { + setpixel_checked(self, x + px1, y + py1, col, 1); + } else { + // Even though this is a hline and would be faster to + // use fill_rect, use line() because it handles x2 < + // x1. + line(self, x + px1, y + py1, x + px2, y + py2, col); + } + } + + px1 = px2; + py1 = py2; + } while (i >= 0); + + if (!n_nodes) { + continue; + } + + // Sort the nodes left-to-right (bubble-sort for code size). + i = 0; + while (i < n_nodes - 1) { + if (nodes[i] > nodes[i + 1]) { + mp_int_t swap = nodes[i]; + nodes[i] = nodes[i + 1]; + nodes[i + 1] = swap; + if (i) { + i--; + } + } else { + i++; + } + } + + // Fill between each pair of nodes. + for (i = 0; i < n_nodes; i += 2) { + fill_rect(self, x + nodes[i], y + row, (nodes[i + 1] - nodes[i]) + 1, 1, col); + } + } + } else { + // Outline only. + mp_int_t px1 = poly_int(&bufinfo, 0); + mp_int_t py1 = poly_int(&bufinfo, 1); + int i = n_poly * 2 - 1; + do { + mp_int_t py2 = poly_int(&bufinfo, i--); + mp_int_t px2 = poly_int(&bufinfo, i--); + line(self, x + px1, y + py1, x + px2, y + py2, col); + px1 = px2; + py1 = py2; + } while (i >= 0); + } + + return mp_const_none; +} +STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(framebuf_poly_obj, 5, 6, framebuf_poly); +#endif // MICROPY_PY_ARRAY && !MICROPY_ENABLE_DYNRUNTIME + +STATIC mp_obj_t framebuf_blit(size_t n_args, const mp_obj_t *args_in) { + mp_obj_framebuf_t *self = MP_OBJ_TO_PTR(args_in[0]); + mp_obj_t source_in = mp_obj_cast_to_native_base(args_in[1], MP_OBJ_FROM_PTR(&mp_type_framebuf)); if (source_in == MP_OBJ_NULL) { mp_raise_TypeError(NULL); } mp_obj_framebuf_t *source = MP_OBJ_TO_PTR(source_in); - mp_int_t x = mp_obj_get_int(args[2]); - mp_int_t y = mp_obj_get_int(args[3]); + mp_int_t x = mp_obj_get_int(args_in[2]); + mp_int_t y = mp_obj_get_int(args_in[3]); mp_int_t key = -1; if (n_args > 4) { - key = mp_obj_get_int(args[4]); + key = mp_obj_get_int(args_in[4]); } mp_obj_framebuf_t *palette = NULL; - if (n_args > 5 && args[5] != mp_const_none) { - palette = MP_OBJ_TO_PTR(mp_obj_cast_to_native_base(args[5], MP_OBJ_FROM_PTR(&mp_type_framebuf))); + if (n_args > 5 && args_in[5] != mp_const_none) { + palette = MP_OBJ_TO_PTR(mp_obj_cast_to_native_base(args_in[5], MP_OBJ_FROM_PTR(&mp_type_framebuf))); } if ( @@ -563,15 +772,15 @@ STATIC mp_obj_t framebuf_scroll(mp_obj_t self_in, mp_obj_t xstep_in, mp_obj_t ys } STATIC MP_DEFINE_CONST_FUN_OBJ_3(framebuf_scroll_obj, framebuf_scroll); -STATIC mp_obj_t framebuf_text(size_t n_args, const mp_obj_t *args) { +STATIC mp_obj_t framebuf_text(size_t n_args, const mp_obj_t *args_in) { // extract arguments - mp_obj_framebuf_t *self = MP_OBJ_TO_PTR(args[0]); - const char *str = mp_obj_str_get_str(args[1]); - mp_int_t x0 = mp_obj_get_int(args[2]); - mp_int_t y0 = mp_obj_get_int(args[3]); + mp_obj_framebuf_t *self = MP_OBJ_TO_PTR(args_in[0]); + const char *str = mp_obj_str_get_str(args_in[1]); + mp_int_t x0 = mp_obj_get_int(args_in[2]); + mp_int_t y0 = mp_obj_get_int(args_in[3]); mp_int_t col = 1; if (n_args >= 5) { - col = mp_obj_get_int(args[4]); + col = mp_obj_get_int(args_in[4]); } // loop over chars @@ -610,6 +819,10 @@ STATIC const mp_rom_map_elem_t framebuf_locals_dict_table[] = { { MP_ROM_QSTR(MP_QSTR_vline), MP_ROM_PTR(&framebuf_vline_obj) }, { MP_ROM_QSTR(MP_QSTR_rect), MP_ROM_PTR(&framebuf_rect_obj) }, { MP_ROM_QSTR(MP_QSTR_line), MP_ROM_PTR(&framebuf_line_obj) }, + { MP_ROM_QSTR(MP_QSTR_ellipse), MP_ROM_PTR(&framebuf_ellipse_obj) }, + #if MICROPY_PY_ARRAY + { MP_ROM_QSTR(MP_QSTR_poly), MP_ROM_PTR(&framebuf_poly_obj) }, + #endif { MP_ROM_QSTR(MP_QSTR_blit), MP_ROM_PTR(&framebuf_blit_obj) }, { MP_ROM_QSTR(MP_QSTR_scroll), MP_ROM_PTR(&framebuf_scroll_obj) }, { MP_ROM_QSTR(MP_QSTR_text), MP_ROM_PTR(&framebuf_text_obj) }, @@ -626,18 +839,18 @@ STATIC const mp_obj_type_t mp_type_framebuf = { #endif // this factory function is provided for backwards compatibility with old FrameBuffer1 class -STATIC mp_obj_t legacy_framebuffer1(size_t n_args, const mp_obj_t *args) { +STATIC mp_obj_t legacy_framebuffer1(size_t n_args, const mp_obj_t *args_in) { mp_obj_framebuf_t *o = mp_obj_malloc(mp_obj_framebuf_t, &mp_type_framebuf); mp_buffer_info_t bufinfo; - mp_get_buffer_raise(args[0], &bufinfo, MP_BUFFER_WRITE); + mp_get_buffer_raise(args_in[0], &bufinfo, MP_BUFFER_WRITE); o->buf = bufinfo.buf; - o->width = mp_obj_get_int(args[1]); - o->height = mp_obj_get_int(args[2]); + o->width = mp_obj_get_int(args_in[1]); + o->height = mp_obj_get_int(args_in[2]); o->format = FRAMEBUF_MVLSB; if (n_args >= 4) { - o->stride = mp_obj_get_int(args[3]); + o->stride = mp_obj_get_int(args_in[3]); } else { o->stride = o->width; } diff --git a/py/dynruntime.h b/py/dynruntime.h index e3200a271954..edb0a83beb2c 100644 --- a/py/dynruntime.h +++ b/py/dynruntime.h @@ -127,6 +127,8 @@ static inline void *m_realloc_dyn(void *ptr, size_t new_num_bytes) { #define mp_obj_str_get_data(o, len) (mp_obj_str_get_data_dyn((o), (len))) #define mp_get_buffer_raise(o, bufinfo, fl) (mp_fun_table.get_buffer_raise((o), (bufinfo), (fl))) #define mp_get_stream_raise(s, flags) (mp_fun_table.get_stream_raise((s), (flags))) +#define mp_obj_is_true(o) (mp_fun_table.native_from_obj(o, MP_NATIVE_TYPE_BOOL)) +#define mp_obj_is_false(o) (!mp_fun_table.native_from_obj(o, MP_NATIVE_TYPE_BOOL)) #define mp_obj_len(o) (mp_obj_len_dyn(o)) #define mp_obj_subscr(base, index, val) (mp_fun_table.obj_subscr((base), (index), (val))) diff --git a/tests/extmod/framebuf_ellipse.py b/tests/extmod/framebuf_ellipse.py new file mode 100644 index 000000000000..a4c784aff876 --- /dev/null +++ b/tests/extmod/framebuf_ellipse.py @@ -0,0 +1,65 @@ +try: + import framebuf +except ImportError: + print("SKIP") + raise SystemExit + + +def printbuf(): + print("--8<--") + for y in range(h): + for x in range(w): + print("%02x" % buf[(x + y * w)], end="") + print() + print("-->8--") + + +w = 30 +h = 30 +buf = bytearray(w * h) +fbuf = framebuf.FrameBuffer(buf, w, h, framebuf.GS8) + +# Outline +fbuf.fill(0) +fbuf.ellipse(15, 15, 12, 6, 0xFF, False) +printbuf() + +# Fill +fbuf.fill(0) +fbuf.ellipse(15, 15, 6, 12, 0xAA, True) +printbuf() + +# Outline and fill some different quadrant combos. +for m in (0, 0b0001, 0b0010, 0b0100, 0b1000, 0b1010): + fbuf.fill(0) + fbuf.ellipse(15, 15, 6, 12, 0xAA, False, m) + printbuf() + fbuf.fill(0) + fbuf.ellipse(15, 15, 6, 12, 0xAA, True, m) + printbuf() + +# Draw ellipses that will go out of bounds at each of the edges. +for x, y in ( + ( + 4, + 4, 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000000000000..03130b3bf0fa --- /dev/null +++ b/tests/extmod/framebuf_polygon.py @@ -0,0 +1,222 @@ +import sys + +try: + import framebuf + from array import array +except ImportError: + print("SKIP") + raise SystemExit + + +# TODO: poly needs functions that aren't in dynruntime.h yet. +if not hasattr(framebuf.FrameBuffer, "poly"): + print("SKIP") + raise SystemExit + + +def print_buffer(buffer, width, height): + for row in range(height): + for col in range(width): + val = buffer[(row * width) + col] + sys.stdout.write(" {:02x}".format(val) if val else " ··") + sys.stdout.write("\n") + + +buf = bytearray(70 * 70) + +w = 30 +h = 25 +fbuf = framebuf.FrameBuffer(buf, w, h, framebuf.GS8) +col = 0xFF +col_fill = 0x99 + +# This describes a arbitrary polygon (this happens to be a concave polygon in +# the shape of an upper-case letter 'M'). +poly = array( + "h", + ( + 0, + 20, + 3, + 20, + 3, + 10, + 6, + 17, + 9, + 10, + 9, + 20, + 12, + 20, + 12, + 3, + 9, + 3, + 6, + 10, + 3, + 3, + 0, + 3, + ), +) +# This describes the same polygon, but the points are in reverse order +# (it shouldn't matter if the polygon has clockwise or anti-clockwise +# winding). Also defined as a bytes instead of array. +poly_reversed = bytes( + ( + 0, + 3, + 3, + 3, + 6, + 10, + 9, + 3, + 12, + 3, + 12, + 20, + 9, + 20, + 9, + 10, + 6, + 17, + 3, + 10, + 3, + 20, + 0, + 20, + ) +) + +# Draw the line polygon (at the origin) and the reversed-order polygon (offset). +fbuf.fill(0) +fbuf.poly(0, 0, poly, col) +fbuf.poly(15, -2, poly_reversed, col) +print_buffer(buf, w, h) +print() + +# Same but filled. +fbuf.fill(0) +fbuf.poly(0, 0, poly, col_fill, True) +fbuf.poly(15, -2, poly_reversed, col_fill, True) +print_buffer(buf, w, h) +print() + +# Draw the fill then the outline to ensure that no fill goes outside the outline. +fbuf.fill(0) +fbuf.poly(0, 0, poly, col_fill, True) +fbuf.poly(0, 0, poly, col) +fbuf.poly(15, -2, poly, col_fill, True) +fbuf.poly(15, -2, poly, col) +print_buffer(buf, w, h) +print() + +# Draw the outline then the fill to ensure the fill completely covers the outline. +fbuf.fill(0) +fbuf.poly(0, 0, poly, col) +fbuf.poly(0, 0, poly, col_fill, True) +fbuf.poly(15, -2, poly, col) +fbuf.poly(15, -2, poly, col_fill, True) +print_buffer(buf, w, h) +print() + +# Draw polygons that will go out of bounds at each of the edges. +for x, y in ( + ( + -8, + -8, + ), + ( + 24, + -6, + ), + ( + 20, + 12, + ), + ( + -2, + 10, + ), +): + fbuf.fill(0) + fbuf.poly(x, y, poly, col) + print_buffer(buf, w, h) + print() + fbuf.fill(0) + fbuf.poly(x, y, poly_reversed, col, True) + print_buffer(buf, w, h) + print() + +# Edge cases: These two lists describe self-intersecting polygons +poly_hourglass = array("h", (0, 0, 9, 0, 0, 19, 9, 19)) +poly_star = array("h", (7, 0, 3, 18, 14, 5, 0, 5, 11, 18)) + +# As before, fill then outline. +fbuf.fill(0) +fbuf.poly(0, 2, poly_hourglass, col_fill, True) +fbuf.poly(0, 2, poly_hourglass, col) +fbuf.poly(12, 2, poly_star, col_fill, True) +fbuf.poly(12, 2, poly_star, col) +print_buffer(buf, w, h) +print() + +# Outline then fill. +fbuf.fill(0) +fbuf.poly(0, 2, poly_hourglass, col) +fbuf.poly(0, 2, poly_hourglass, col_fill, True) +fbuf.poly(12, 2, poly_star, col) +fbuf.poly(12, 2, poly_star, col_fill, True) +print_buffer(buf, w, h) +print() + +# Edge cases: These are "degenerate" polygons. +poly_empty = array("h") # Will draw nothing at all. +poly_one = array("h", (20, 20)) # Will draw a single point. +poly_two = array("h", (10, 10, 5, 5)) # Will draw a single line. +poly_wrong_length = array("h", (2, 2, 4)) # Will round down to one point. + +fbuf.fill(0) +fbuf.poly(0, 0, poly_empty, col) +fbuf.poly(0, 0, poly_one, col) +fbuf.poly(0, 0, poly_two, col) +fbuf.poly(0, 0, poly_wrong_length, col) +print_buffer(buf, w, h) +print() + +# A shape with a horizontal overhang. +poly_overhang = array("h", (0, 0, 0, 5, 5, 5, 5, 10, 10, 10, 10, 0)) + +fbuf.fill(0) +fbuf.poly(0, 0, poly_overhang, col) +fbuf.poly(0, 0, poly_overhang, col_fill, True) +print_buffer(buf, w, h) +print() + +fbuf.fill(0) +fbuf.poly(0, 0, poly_overhang, col_fill, True) +fbuf.poly(0, 0, poly_overhang, col) +print_buffer(buf, w, h) +print() + +# Triangles +w = 70 +h = 70 +fbuf = framebuf.FrameBuffer(buf, w, h, framebuf.GS8) +t1 = array("h", [40, 0, 20, 68, 62, 40]) +t2 = array("h", [40, 0, 0, 16, 20, 68]) + +fbuf.fill(0) +fbuf.poly(0, 0, t1, 0xFF, False) +fbuf.poly(0, 0, t2, 0xFF, False) +print_buffer(buf, w, h) + +fbuf.fill(0) +fbuf.poly(0, 0, t1, 0xFF, True) +fbuf.poly(0, 0, t2, 0xFF, True) +print_buffer(buf, w, h) diff --git a/tests/extmod/framebuf_polygon.py.exp b/tests/extmod/framebuf_polygon.py.exp new file mode 100644 index 000000000000..9b4801c788a5 --- /dev/null +++ b/tests/extmod/framebuf_polygon.py.exp @@ -0,0 +1,582 @@ + ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· + ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ff ff ff ff ·· ·· ·· ·· ·· ff ff ff ff ·· ·· + ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ·· ff ·· ·· ff ·· ·· ·· ·· ·· ff ·· ·· ff ·· ·· + ff ff ff ff ·· ·· ·· ·· ·· ff ff ff ff ·· ·· ff ·· ·· ·· ff ·· ·· ·· ff ·· ·· ·· ff ·· ·· + ff ·· ·· ff ·· ·· 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