pimoroni-pico/examples/gfx_pack/gfx_demo.cpp

125 lines
3.0 KiB
C++

#include "pico/stdlib.h"
#include "libraries/pico_graphics/pico_graphics.hpp"
#include "libraries/gfx_pack/gfx_pack.hpp"
using namespace pimoroni;
ST7567 st7567(128, 64, GfxPack::gfx_pack_pins);
PicoGraphics_Pen1Bit graphics(st7567.width, st7567.height, nullptr);
RGBLED backlight_rgb(GfxPack::BL_R, GfxPack::BL_G, GfxPack::BL_B, Polarity::ACTIVE_HIGH);
Button button_a(GfxPack::A);
Button button_b(GfxPack::B);
Button button_c(GfxPack::C);
Button button_d(GfxPack::D);
Button button_e(GfxPack::E);
// HSV Conversion expects float inputs in the range of 0.00-1.00 for each channel
// Outputs are rgb in the range 0-255 for each channel
void from_hsv(float h, float s, float v, uint8_t &r, uint8_t &g, uint8_t &b) {
float i = floor(h * 6.0f);
float f = h * 6.0f - i;
v *= 255.0f;
uint8_t p = v * (1.0f - s);
uint8_t q = v * (1.0f - f * s);
uint8_t t = v * (1.0f - (1.0f - f) * s);
switch (int(i) % 6) {
case 0: r = v; g = t; b = p; break;
case 1: r = q; g = v; b = p; break;
case 2: r = p; g = v; b = t; break;
case 3: r = p; g = q; b = v; break;
case 4: r = t; g = p; b = v; break;
case 5: r = v; g = p; b = q; break;
}
}
int main() {
sleep_ms(100);
st7567.set_backlight(64); // 0 to 255
struct pt {
float x;
float y;
uint8_t r;
float dx;
float dy;
uint16_t pen;
};
std::vector<pt> shapes;
for(int i = 0; i < 10; i++) {
pt shape;
shape.x = rand() % graphics.bounds.w;
shape.y = rand() % graphics.bounds.h;
shape.r = (rand() % 10) + 3;
shape.dx = float(rand() % 255) / 64.0f;
shape.dy = float(rand() % 255) / 64.0f;
shape.pen = rand() % 14;
shapes.push_back(shape);
}
Point text_location(0, 0);
float hue = 0.0f;
while(true) {
if(button_a.raw()) {
text_location.x -= 1;
}
if(button_b.raw()) {
text_location.x += 1;
}
if(button_c.raw()) {
text_location.y -= 1;
}
if(button_d.raw()) {
text_location.y += 1;
}
if(button_e.raw()) {
text_location.x = 0;
text_location.y = 0;
}
graphics.set_pen(0);
graphics.clear();
for(auto &shape : shapes) {
shape.x += shape.dx;
shape.y += shape.dy;
if((shape.x - shape.r) < 0) {
shape.dx *= -1;
shape.x = shape.r;
}
if((shape.x + shape.r) >= graphics.bounds.w) {
shape.dx *= -1;
shape.x = graphics.bounds.w - shape.r;
}
if((shape.y - shape.r) < 0) {
shape.dy *= -1;
shape.y = shape.r;
}
if((shape.y + shape.r) >= graphics.bounds.h) {
shape.dy *= -1;
shape.y = graphics.bounds.h - shape.r;
}
graphics.set_pen(shape.pen);
graphics.circle(Point(shape.x, shape.y), shape.r);
}
graphics.set_pen(15);
graphics.text("Hello World", text_location, 320);
// update screen
backlight_rgb.set_hsv(hue, 1.0f, 1.0f);
hue += 0.002;
st7567.update(&graphics);
sleep_ms(1000/15);
}
return 0;
}