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2025-12-04 19:11:29 +08:00
commit bb600bbbc4
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+/**
+ * Copyright(c) Live2D Inc. All rights reserved.
+ *
+ * Use of this source code is governed by the Live2D Open Software license
+ * that can be found at https://www.live2d.com/eula/live2d-open-software-license-agreement_en.html.
+ */
+
+#include "CubismMatrix44.hpp"
+
+namespace Live2D { namespace Cubism { namespace Framework {
+CubismMatrix44::CubismMatrix44()
+{
+    LoadIdentity();
+}
+
+CubismMatrix44::~CubismMatrix44()
+{ }
+
+void CubismMatrix44::LoadIdentity()
+{
+    csmFloat32 c[16] = {
+        1.0f, 0.0f, 0.0f, 0.0f,
+        0.0f, 1.0f, 0.0f, 0.0f,
+        0.0f, 0.0f, 1.0f, 0.0f,
+        0.0f, 0.0f, 0.0f, 1.0f
+    };
+
+    SetMatrix(c);
+}
+
+csmFloat32* CubismMatrix44::GetArray()
+{
+    return _tr;
+}
+
+void CubismMatrix44::Multiply(csmFloat32* a, csmFloat32* b, csmFloat32* dst)
+{
+    csmFloat32 c[16] = {
+                        0.0f, 0.0f, 0.0f, 0.0f,
+                        0.0f, 0.0f, 0.0f, 0.0f,
+                        0.0f, 0.0f, 0.0f, 0.0f,
+                        0.0f, 0.0f, 0.0f, 0.0f
+                        };
+    csmInt32 n = 4;
+
+    for (csmInt32 i = 0; i < n; ++i)
+    {
+        for (csmInt32 j = 0; j < n; ++j)
+        {
+            for (csmInt32 k = 0; k < n; ++k)
+            {
+                c[j + i * 4] += a[k + i * 4] * b[j + k * 4];
+            }
+        }
+    }
+
+    for (csmInt32 i = 0; i < 16; ++i)
+    {
+        dst[i] = c[i];
+    }
+}
+
+void CubismMatrix44::TranslateRelative(csmFloat32 x, csmFloat32 y)
+{
+    csmFloat32 tr1[16] = {
+                          1.0f, 0.0f, 0.0f, 0.0f,
+                          0.0f, 1.0f, 0.0f, 0.0f,
+                          0.0f, 0.0f, 1.0f, 0.0f,
+                          x,    y,    0.0f, 1.0f
+                          };
+
+    Multiply(tr1, _tr, _tr);
+}
+
+void CubismMatrix44::Translate(csmFloat32 x, csmFloat32 y)
+{
+    _tr[12] = x;
+    _tr[13] = y;
+}
+
+void CubismMatrix44::ScaleRelative(csmFloat32 x, csmFloat32 y)
+{
+    csmFloat32 tr1[16] = {
+                          x,      0.0f,   0.0f, 0.0f,
+                          0.0f,   y,      0.0f, 0.0f,
+                          0.0f,   0.0f,   1.0f, 0.0f,
+                          0.0f,   0.0f,   0.0f, 1.0f
+                          };
+
+    Multiply(tr1, _tr, _tr);
+}
+
+void CubismMatrix44::Scale(csmFloat32 x, csmFloat32 y)
+{
+    _tr[0] = x;
+    _tr[5] = y;
+}
+
+csmFloat32 CubismMatrix44::TransformX(csmFloat32 src)
+{
+    return _tr[0] * src + _tr[12];
+}
+
+csmFloat32 CubismMatrix44::InvertTransformX(csmFloat32 src)
+{
+    return (src - _tr[12]) / _tr[0];
+}
+
+csmFloat32 CubismMatrix44::TransformY(csmFloat32 src)
+{
+    return _tr[5] * src + _tr[13];
+}
+
+csmFloat32 CubismMatrix44::InvertTransformY(csmFloat32 src)
+{
+    return (src - _tr[13]) / _tr[5];
+}
+
+void CubismMatrix44::SetMatrix(csmFloat32* tr)
+{
+    for (csmInt32 i = 0; i < 16; ++i)
+    {
+        _tr[i] = tr[i];
+    }
+}
+
+csmFloat32 CubismMatrix44::GetScaleX() const
+{
+    return _tr[0];
+}
+
+csmFloat32 CubismMatrix44::GetScaleY() const
+{
+    return _tr[5];
+}
+
+csmFloat32 CubismMatrix44::GetTranslateX() const
+{
+    return _tr[12];
+}
+
+csmFloat32 CubismMatrix44::GetTranslateY() const
+{
+    return _tr[13];
+}
+
+void CubismMatrix44::TranslateX(csmFloat32 x)
+{
+    _tr[12] = x;
+}
+
+void CubismMatrix44::TranslateY(csmFloat32 y)
+{
+    _tr[13] = y;
+}
+
+void CubismMatrix44::MultiplyByMatrix(CubismMatrix44* m)
+{
+    Multiply(m->GetArray(), _tr, _tr);
+}
+}}}