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105 lines
2.6 KiB
C++
105 lines
2.6 KiB
C++
#pragma once
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#include <memory>
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#include <string>
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#ifndef GRAPHINGAPI
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#ifdef GRAPHING_ENGINE_IMPL
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#define GRAPHINGAPI __declspec(dllexport)
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#else
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#define GRAPHINGAPI __declspec(dllimport)
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#endif
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#endif
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namespace Graphing
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{
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struct NonCopyable
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{
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NonCopyable() = default;
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virtual ~NonCopyable() = default;
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NonCopyable(NonCopyable const&) = delete;
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NonCopyable& operator=(NonCopyable const&) = delete;
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};
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struct NonMoveable
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{
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NonMoveable() = default;
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virtual ~NonMoveable() = default;
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NonMoveable(NonMoveable&&) = delete;
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NonMoveable& operator=(NonMoveable&&) = delete;
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};
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struct IExpression
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{
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virtual ~IExpression() = default;
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virtual unsigned int GetExpressionID() const = 0;
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virtual bool IsEmptySet() const = 0;
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};
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struct IVariable
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{
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virtual ~IVariable() = default;
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virtual int GetVariableID() const = 0;
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virtual const std::wstring& GetVariableName() = 0;
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};
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struct IExpressible
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{
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virtual ~IExpressible() = default;
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virtual std::shared_ptr< IExpression > GetExpression() const = 0;
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};
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class Color
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{
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private:
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// Each color channel is given an 8 bit space in a 32 bit uint32_t.
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// The format is (RRGGBBAA). As an example,
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// Red is FF0000FF (4,278,190,335)
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static constexpr uint8_t redChannelShift = 24;
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static constexpr uint8_t greenChannelShift = 16;
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static constexpr uint8_t blueChannelShift = 8;
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static constexpr uint8_t alphaChannelShift = 0;
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public:
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uint8_t R;
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uint8_t G;
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uint8_t B;
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uint8_t A;
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Color::Color(uint8_t r, uint8_t g, uint8_t b, uint8_t a) noexcept
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: R{ r }, G{ g }, B{ b }, A{ a }
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{}
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Color::Color(uint8_t r, uint8_t g, uint8_t b) noexcept
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: Color{ r, g, b, 0xFF }
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{}
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Color::Color() noexcept
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: Color{ 0, 0, 0 }
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{}
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explicit Color(uint32_t value) noexcept
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: Color{
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static_cast<uint8_t>(value >> redChannelShift),
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static_cast<uint8_t>(value >> greenChannelShift),
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static_cast<uint8_t>(value >> blueChannelShift),
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static_cast<uint8_t>(value >> alphaChannelShift)
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}
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{
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}
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explicit operator uint32_t() const
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{
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return (A << alphaChannelShift)
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| (R << redChannelShift)
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| (G << greenChannelShift)
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| (B << blueChannelShift);
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}
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};
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}
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