init commit

source/core/include/math/dvc_fixmath.h

@@ -0,0 +1,98 @@
+#pragma once
+
+#include "dvc_config.h"
+
+DV_CORE_BEGIN_NAMESPACE
+
+typedef int64_t ifloat_t;
+//typedef int64_t ifloat2_t[2];
+//typedef int64_t ifloat3_t[3];
+
+#define IFLOAT_SHIFT (16)
+#define IFLOAT_SCALE ((float64_t)(1<<IFLOAT_SHIFT))
+
+//-------------------------------------------------------------------------------------
+inline ifloat_t ifloat_init(float32_t a)
+{
+	return (ifloat_t)((float64_t)a * IFLOAT_SCALE + 0.5);
+}
+
+//-------------------------------------------------------------------------------------
+inline ifloat_t ifloat_init(int32_t a)
+{
+	return (int64_t)(a)<< IFLOAT_SHIFT;
+}
+
+//-------------------------------------------------------------------------------------
+inline float32_t ifloat_get_float(ifloat_t a)
+{
+	return (float32_t)((float64_t)a/ IFLOAT_SCALE);
+}
+
+//-------------------------------------------------------------------------------------
+inline ifloat_t ifloat_multiply(ifloat_t a, ifloat_t b)
+{
+	return (ifloat_t)((a * b) >> IFLOAT_SHIFT);
+}
+
+//-------------------------------------------------------------------------------------
+//inline void ifloat3_add(ifloat3_t& a, const ifloat3_t& b)
+//{
+//	a[0] += b[0]; a[1] += b[1]; a[2] += b[2];
+//}
+
+//-------------------------------------------------------------------------------------
+//inline void ifloat3_sub(ifloat3_t& a, const ifloat3_t& b)
+//{
+//	a[0] -= b[0]; a[1] -= b[1]; a[2] -= b[2];
+//}
+
+//-------------------------------------------------------------------------------------
+//inline void ifloat3_cpy(ifloat3_t& a, const ifloat3_t& b)
+//{
+//	a[0] = b[0]; a[1] = b[1]; a[2] = b[2];
+//}
+
+//-------------------------------------------------------------------------------------
+struct ifloat2_t
+{
+	ifloat_t x, y;
+
+	ifloat2_t() : x(0ll), y(0ll) {}
+	ifloat2_t(const ifloat2_t& other) : x(other.x), y(other.y) {}
+	ifloat2_t(float32_t _x, float32_t _y) : x(ifloat_init(_x)), y(ifloat_init(_y)) {}
+};
+
+struct ifloat3_t
+{
+	ifloat_t x, y, z;
+
+	inline void add(const ifloat3_t& other) {
+		x += other.x;
+		y += other.y;
+		z += other.z;
+	}
+
+	inline void sub(const ifloat3_t& other) {
+		x -= other.x;
+		y -= other.y;
+		z -= other.z;
+	}
+
+	inline ifloat_t operator [] (const size_t i) const {
+		return *(&x + i);
+	}
+
+	inline ifloat_t& operator [] (const size_t i) {
+		return *(&x + i);
+	}
+
+	ifloat3_t() : x(0ll), y(0ll), z(0ll) {}
+	ifloat3_t(const ifloat3_t& other) : x(other.x), y(other.y), z(other.z) {}
+	ifloat3_t(float32_t _x, float32_t _y, float32_t _z) : x(ifloat_init(_x)), y(ifloat_init(_y)), z(ifloat_init(_z)) {}
+	ifloat3_t(ifloat_t _x, ifloat_t _y, ifloat_t _z) : x(_x), y(_y), z(_z) {}
+};
+
+
+DV_CORE_END_NAMESPACE
+