kopia lustrzana https://github.com/pimoroni/pimoroni-pico
125 wiersze
3.3 KiB
C++
125 wiersze
3.3 KiB
C++
#include <string.h>
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#include <math.h>
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#include <vector>
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#include <cstdlib>
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#include "libraries/pico_display_2/pico_display_2.hpp"
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#include "drivers/st7789/st7789.hpp"
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#include "libraries/pico_graphics/pico_graphics.hpp"
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#include "rgbled.hpp"
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#include "button.hpp"
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using namespace pimoroni;
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ST7789 st7789(320, 240, ROTATE_0, false, get_spi_pins(BG_SPI_FRONT));
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PicoGraphics_PenRGB332 graphics(st7789.width, st7789.height, nullptr);
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RGBLED led(PicoDisplay2::LED_R, PicoDisplay2::LED_G, PicoDisplay2::LED_B);
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Button button_a(PicoDisplay2::A);
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Button button_b(PicoDisplay2::B);
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Button button_x(PicoDisplay2::X);
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Button button_y(PicoDisplay2::Y);
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// HSV Conversion expects float inputs in the range of 0.00-1.00 for each channel
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// Outputs are rgb in the range 0-255 for each channel
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void from_hsv(float h, float s, float v, uint8_t &r, uint8_t &g, uint8_t &b) {
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float i = floor(h * 6.0f);
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float f = h * 6.0f - i;
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v *= 255.0f;
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uint8_t p = v * (1.0f - s);
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uint8_t q = v * (1.0f - f * s);
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uint8_t t = v * (1.0f - (1.0f - f) * s);
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switch (int(i) % 6) {
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case 0: r = v; g = t; b = p; break;
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case 1: r = q; g = v; b = p; break;
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case 2: r = p; g = v; b = t; break;
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case 3: r = p; g = q; b = v; break;
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case 4: r = t; g = p; b = v; break;
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case 5: r = v; g = p; b = q; break;
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}
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}
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int main() {
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st7789.set_backlight(255);
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struct pt {
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float x;
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float y;
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uint8_t r;
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float dx;
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float dy;
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uint16_t pen;
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};
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std::vector<pt> shapes;
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for(int i = 0; i < 100; i++) {
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pt shape;
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shape.x = rand() % graphics.bounds.w;
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shape.y = rand() % graphics.bounds.h;
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shape.r = (rand() % 10) + 3;
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shape.dx = float(rand() % 255) / 64.0f;
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shape.dy = float(rand() % 255) / 64.0f;
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shape.pen = graphics.create_pen(rand() % 255, rand() % 255, rand() % 255);
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shapes.push_back(shape);
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}
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Point text_location(0, 0);
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Pen BG = graphics.create_pen(120, 40, 60);
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Pen WHITE = graphics.create_pen(255, 255, 255);
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while(true) {
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if(button_a.raw()) text_location.x -= 1;
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if(button_b.raw()) text_location.x += 1;
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if(button_x.raw()) text_location.y -= 1;
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if(button_y.raw()) text_location.y += 1;
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graphics.set_pen(BG);
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graphics.clear();
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for(auto &shape : shapes) {
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shape.x += shape.dx;
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shape.y += shape.dy;
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if((shape.x - shape.r) < 0) {
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shape.dx *= -1;
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shape.x = shape.r;
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}
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if((shape.x + shape.r) >= graphics.bounds.w) {
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shape.dx *= -1;
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shape.x = graphics.bounds.w - shape.r;
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}
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if((shape.y - shape.r) < 0) {
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shape.dy *= -1;
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shape.y = shape.r;
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}
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if((shape.y + shape.r) >= graphics.bounds.h) {
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shape.dy *= -1;
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shape.y = graphics.bounds.h - shape.r;
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}
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graphics.set_pen(shape.pen);
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graphics.circle(Point(shape.x, shape.y), shape.r);
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}
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// Since HSV takes a float from 0.0 to 1.0 indicating hue,
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// then we can divide millis by the number of milliseconds
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// we want a full colour cycle to take. 5000 = 5 sec.
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uint8_t r = 0, g = 0, b = 0;
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from_hsv((float)millis() / 5000.0f, 1.0f, 0.5f + sinf(millis() / 100.0f / 3.14159f) * 0.5f, r, g, b);
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led.set_rgb(r, g, b);
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graphics.set_pen(WHITE);
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graphics.text("Hello World", text_location, 320);
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// update screen
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st7789.update(&graphics);
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}
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return 0;
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}
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