kopia lustrzana https://github.com/pimoroni/pimoroni-pico
74 wiersze
1.9 KiB
C++
74 wiersze
1.9 KiB
C++
#pragma once
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#include <cstdint>
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#include <algorithm>
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// a tiny little graphics library for our Pico products
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// supports only 16-bit (565) RGB framebuffers
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namespace pimoroni {
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struct rect;
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struct point {
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int32_t x = 0, y = 0;
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point() = default;
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point(int32_t x, int32_t y) : x(x), y(y) {}
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inline point& operator-= (const point &a) { x -= a.x; y -= a.y; return *this; }
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inline point& operator+= (const point &a) { x += a.x; y += a.y; return *this; }
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point clamp(const rect &r) const;
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};
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struct rect {
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int32_t x = 0, y = 0, w = 0, h = 0;
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rect() = default;
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rect(int32_t x, int32_t y, int32_t w, int32_t h) : x(x), y(y), w(w), h(h) {}
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bool empty() const;
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bool contains(const point &p) const;
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bool contains(const rect &p) const;
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bool intersects(const rect &r) const;
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rect intersection(const rect &r) const;
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void inflate(int32_t v);
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void deflate(int32_t v);
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};
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class PicoGraphics {
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public:
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rect bounds;
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rect clip;
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uint16_t *frame_buffer;
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uint16_t pen;
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public:
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PicoGraphics(uint16_t width, uint16_t height, uint16_t *frame_buffer)
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: frame_buffer(frame_buffer), bounds(0, 0, width, height), clip(0, 0, width, height) {}
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void set_pen(uint8_t r, uint8_t g, uint8_t b);
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void set_pen(uint16_t p);
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uint16_t create_pen(uint8_t r, uint8_t g, uint8_t b);
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void set_clip(const rect &r);
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void remove_clip();
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uint16_t* ptr(const point &p);
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uint16_t* ptr(const rect &r);
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uint16_t* ptr(int32_t x, int32_t y);
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void clear();
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void pixel(const point &p);
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void pixel_span(const point &p, int32_t l);
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void rectangle(const rect &r);
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void circle(const point &p, int32_t r);
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void text(const std::string &t, const point &p, int32_t wrap);
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void character(const char c, const point &p, uint8_t scale);
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//void polygon(std::vector);
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};
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} |