BLI: add float2, float3, float4x4, Color4f and Color4b

Reviewers: brecht, campbellbarton, sergey

Differential Revision: https://developer.blender.org/D7450

1 files changed, 218 insertions, 0 deletions

diff --git a/source/blender/blenlib/BLI_float3.hh b/source/blender/blenlib/BLI_float3.hh
new file mode 100644
index 00000000000..9678fa4b2d3
--- /dev/null
+++ b/source/blender/blenlib/BLI_float3.hh
@@ -0,0 +1,218 @@
+/*
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+
+#ifndef __BLI_FLOAT3_HH__
+#define __BLI_FLOAT3_HH__
+
+#include <iostream>
+
+#include "BLI_math_vector.h"
+
+namespace BLI {
+
+struct float3 {
+  float x, y, z;
+
+  float3() = default;
+
+  float3(const float *ptr) : x{ptr[0]}, y{ptr[1]}, z{ptr[2]}
+  {
+  }
+
+  float3(const float (*ptr)[3]) : float3((const float *)ptr)
+  {
+  }
+
+  explicit float3(float value) : x(value), y(value), z(value)
+  {
+  }
+
+  explicit float3(int value) : x(value), y(value), z(value)
+  {
+  }
+
+  float3(float x, float y, float z) : x{x}, y{y}, z{z}
+  {
+  }
+
+  operator const float *() const
+  {
+    return &x;
+  }
+
+  operator float *()
+  {
+    return &x;
+  }
+
+  float normalize_and_get_length()
+  {
+    return normalize_v3(*this);
+  }
+
+  float3 normalized() const
+  {
+    float3 result;
+    normalize_v3_v3(result, *this);
+    return result;
+  }
+
+  float length() const
+  {
+    return len_v3(*this);
+  }
+
+  float length_squared() const
+  {
+    return len_squared_v3(*this);
+  }
+
+  void reflect(const float3 &normal)
+  {
+    *this = this->reflected(normal);
+  }
+
+  float3 reflected(const float3 &normal) const
+  {
+    float3 result;
+    reflect_v3_v3v3(result, *this, normal);
+    return result;
+  }
+
+  static float3 safe_divide(const float3 &a, const float3 &b)
+  {
+    float3 result;
+    result.x = (b.x == 0.0f) ? 0.0f : a.x / b.x;
+    result.y = (b.y == 0.0f) ? 0.0f : a.y / b.y;
+    result.z = (b.z == 0.0f) ? 0.0f : a.z / b.z;
+    return result;
+  }
+
+  void invert()
+  {
+    x = -x;
+    y = -y;
+    z = -z;
+  }
+
+  friend float3 operator+(const float3 &a, const float3 &b)
+  {
+    return {a.x + b.x, a.y + b.y, a.z + b.z};
+  }
+
+  void operator+=(const float3 &b)
+  {
+    this->x += b.x;
+    this->y += b.y;
+    this->z += b.z;
+  }
+
+  friend float3 operator-(const float3 &a, const float3 &b)
+  {
+    return {a.x - b.x, a.y - b.y, a.z - b.z};
+  }
+
+  friend float3 operator-(const float3 &a)
+  {
+    return {-a.x, -a.y, -a.z};
+  }
+
+  void operator-=(const float3 &b)
+  {
+    this->x -= b.x;
+    this->y -= b.y;
+    this->z -= b.z;
+  }
+
+  void operator*=(float scalar)
+  {
+    this->x *= scalar;
+    this->y *= scalar;
+    this->z *= scalar;
+  }
+
+  void operator*=(const float3 &other)
+  {
+    this->x *= other.x;
+    this->y *= other.y;
+    this->z *= other.z;
+  }
+
+  friend float3 operator*(const float3 &a, const float3 &b)
+  {
+    return {a.x * b.x, a.y * b.y, a.z * b.z};
+  }
+
+  friend float3 operator*(const float3 &a, float b)
+  {
+    return {a.x * b, a.y * b, a.z * b};
+  }
+
+  friend float3 operator*(float a, const float3 &b)
+  {
+    return b * a;
+  }
+
+  friend float3 operator/(const float3 &a, float b)
+  {
+    BLI_assert(b != 0.0f);
+    return {a.x / b, a.y / b, a.z / b};
+  }
+
+  friend std::ostream &operator<<(std::ostream &stream, const float3 &v)
+  {
+    stream << "(" << v.x << ", " << v.y << ", " << v.z << ")";
+    return stream;
+  }
+
+  static float dot(const float3 &a, const float3 &b)
+  {
+    return a.x * b.x + a.y * b.y + a.z * b.z;
+  }
+
+  static float3 cross_high_precision(const float3 &a, const float3 &b)
+  {
+    float3 result;
+    cross_v3_v3v3_hi_prec(result, a, b);
+    return result;
+  }
+
+  static float3 project(const float3 &a, const float3 &b)
+  {
+    float3 result;
+    project_v3_v3v3(result, a, b);
+    return result;
+  }
+
+  static float distance(const float3 &a, const float3 &b)
+  {
+    return (a - b).length();
+  }
+
+  static float distance_squared(const float3 &a, const float3 &b)
+  {
+    return float3::dot(a, b);
+  }
+
+  static float3 interpolate(const float3 &a, const float3 &b, float t)
+  {
+    return a * (1 - t) + b * t;
+  }
+};
+
+}  // namespace BLI
+
+#endif /* __BLI_FLOAT3_HH__ */