chore(repo): remove legacy root demo target

CMakeLists.txt

@@ -1,34 +0,0 @@
-cmake_minimum_required(VERSION 3.18.4)
-include($ENV{PICO_SDK_PATH}/external/pico_sdk_import.cmake)
-
-project(rp_pico_display_engine C CXX ASM)
-set(CMAKE_C_STANDARD 11)
-set(CMAKE_CXX_STANDARD 17)
-
-pico_sdk_init()
-
-add_executable(${PROJECT_NAME}
-    main.c
-    src/Font/font_data.c
-    src/core/display.c
-    src/render/context.c
-    src/render/line.c
-    src/render/grid.c
-    src/render/sine_wave.c
-    src/render/bezier.c
-)
-
-target_include_directories(${PROJECT_NAME} PRIVATE
-    include
-    include/display
-)
-
-target_link_libraries(${PROJECT_NAME}
-    pico_stdlib
-    hardware_spi
-    hardware_dma
-    hardware_timer
-    pico_multicore
-)
-
-pico_add_extra_outputs(${PROJECT_NAME})

main.c

@@ -1,52 +0,0 @@
-#include "pico/stdlib.h"
-#include "display/display.h"
-#include "display/render/context.h"
-#include "display/render/grid.h"
-#include "display/render/sine_wave.h"
-#include "Font/font_data.h"
-
-#define WIDTH   320
-#define HEIGHT  240
-
-static void on_frame_done(void)
-{
-    display_submit();
-}
-
-int main(void)
-{
-    stdio_init_all();
-
-    display_config_t cfg = {
-        .width = WIDTH,
-        .height = HEIGHT,
-        .buffer_count = 1,
-        .mode = DISPLAY_MODE_SAFE,
-        .frame_done_cb = on_frame_done
-    };
-
-    display_init(&cfg);
-    display_submit();
-
-    float phase = 0.0f;
-    render_ctx_t rc;
-
-    while (1)
-    {
-        display_poll();
-
-        uint16_t* buf = display_get_draw_buffer();
-        render_begin(&rc, buf, WIDTH, HEIGHT);
-
-        render_clear(&rc, RGB16(9, 19, 9));
-        render_grid(&rc, 20, 20, 40, RGB16(12, 26, 13));
-        render_sine_wave(&rc, WIDTH, 50, 2.0f, 0, HEIGHT / 2, phase, RGB16(0, 255, 0));
-        draw_string(&rc, 12, 12, L"rp_pico_display_engine", RGB565(255, 255, 255));
-
-        phase += 0.08f;
-        if (phase > 6.2831853f)
-        {
-            phase -= 6.2831853f;
-        }
-    }
-}