mirror of
https://github.com/stasenso/rp_pico_display_engine.git
synced 2026-06-26 21:32:41 +03:00
Stanislav N Mikhailov
64 lines
1.5 KiB
C
64 lines
1.5 KiB
C
#pragma once
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#include <stddef.h>
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#include <stdint.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define RGB565(R, G, B) \
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((uint16_t)((((uint16_t)(R) & 0xF8u) << 8) | \
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(((uint16_t)(G) & 0xFCu) << 3) | \
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(((uint16_t)(B) & 0xF8u) >> 3)))
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#define BSWAP16(X) \
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((uint16_t)((((uint16_t)(X) & 0x00FFu) << 8) | \
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(((uint16_t)(X) & 0xFF00u) >> 8)))
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/* RGB888 -> RGB565 with swapped byte order for ctx->buf */
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#define RGB16(R, G, B) BSWAP16(RGB565((R), (G), (B)))
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typedef struct
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{
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uint16_t* buf;
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uint16_t width;
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uint16_t height;
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uint16_t clip_x0;
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uint16_t clip_y0;
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uint16_t clip_x1;
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uint16_t clip_y1;
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} render_ctx_t;
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void render_begin(render_ctx_t* ctx, uint16_t* buf, uint16_t width, uint16_t height);
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void render_set_clip(render_ctx_t* ctx, uint16_t x, uint16_t y, uint16_t width, uint16_t height);
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void render_reset_clip(render_ctx_t* ctx);
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void render_clear(render_ctx_t* ctx, uint16_t color);
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void render_pixel(render_ctx_t* ctx, int x, int y, uint16_t color);
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void render_line(render_ctx_t* ctx, int x0, int y0, int x1, int y1, uint16_t color);
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void render_grid(render_ctx_t* ctx, uint16_t x, uint16_t y, uint16_t step, uint16_t color);
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void render_sine_wave(
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render_ctx_t* ctx,
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uint16_t num_points,
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int amplitude,
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float frequency,
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int offset_x,
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int offset_y,
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float phase_shift,
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uint16_t color
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);
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void render_bezier(
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render_ctx_t* ctx,
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const int* points_x,
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const int* points_y,
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size_t num_points,
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uint16_t color
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);
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#ifdef __cplusplus
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}
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#endif
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