# Changes

3ds Backend:
  - switch to shaderProgramUse
Desktop Backend
  - Add Pre Alpha Text Input and Keyboard Support
  - Move Shader Attrib Setup into a function and callit every time we need a set up vbo
  - Move to Mat4 api
Core:
  - Add fquat support
  - Add LoadFile2Str
  - Move Mat4 Lib from Project     n73 to Palladium
  - Add full supprot for vec cross types
  - Add Normalize, Distance and Dot to all
  - Add Cross to vec3
Drivers:
  - Add a SetViewPort func to GFX
  - Add Keyboard keys and Flasg to Hid
Image:
  - Add Vertical Flipping
  - Add Horizontal flipping
UI7:
  - Fix Critical Bug in IO Viewport handler
  - Fix library list (error on MinGW for some reason)
Lazyvec:
  - Split into multiple source files
  - Generate new functions (see core updates)

include/pd/core/fquat.hpp

@@ -0,0 +1,55 @@
+#pragma once
+
+/*
+MIT License
+Copyright (c) 2024 - 2025 René Amthor (tobid7)
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+ */
+
+// This file is based on fvec4
+
+#include <pd/core/common.hpp>
+#include <pd/core/vec4.hpp>
+
+namespace PD {
+class fquat : public fvec4 {
+  constexpr fquat() : fvec4(0.f, 0.f, 0.f, 1.f) {}
+  constexpr fquat(float x, float y, float z, float w) : fvec4(x, y, z, w) {}
+  constexpr fquat(const fvec4& v) : fvec4(v) {}
+
+  static fquat Identity() { return fquat(0.f, 0.f, 0.f, 1.f); }
+
+  constexpr fquat Conjugate() const { return fquat(-x, -y, -z, w); }
+  fquat Inverse() const {
+    float len = SqLen();
+    if (len == 0.0f) {
+      return fquat();
+    }
+    return Conjugate() / len;
+  }
+
+  fquat operator*(const fquat& v) const {
+    return fquat(w * v.x + x * v.w + y * v.z - z * v.y,
+                 w * v.y - x * v.z + y * v.w + z * v.x,
+                 w * v.z + x * v.y - y * v.x + z * v.w,
+                 w * v.w - x * v.x - y * v.y - z * v.z);
+  }
+};
+}  // namespace PD