1 files changed, 75 insertions, 0 deletions
diff --git a/src/Math/Box2f.c b/src/Math/Box2f.c
new file mode 100644
index 0000000..bd6eb73
--- /dev/null
+++ b/src/Math/Box2f.c
@@ -0,0 +1,75 @@
+#include <BH/Math.h>
+#include <string.h>
+
+
+#define EPSILON 0.00001f
+#define PI      3.14159265358979323846f
+
+
+void BH_Box2fUnion(const float *aMin,
+                   const float *aMax,
+                   const float *bMin,
+                   const float *bMax,
+                   float *outMin,
+                   float *outMax)
+{
+    BH_Vec2fMin(aMin, bMin, outMin);
+    BH_Vec2fMax(aMax, bMax, outMax);
+}
+
+
+int BH_Box2fIntersect(const float *aMin,
+                      const float *aMax,
+                      const float *bMin,
+                      const float *bMax,
+                      float *outMin,
+                      float *outMax)
+{
+    BH_Vec2fMax(aMin, bMin, outMin);
+    BH_Vec2fMin(aMax, bMax, outMax);
+
+    if (outMin[0] >= outMax[0] || outMin[1] >= outMax[1])
+        return BH_ERROR;
+
+    return BH_OK;
+}
+
+
+int BH_Box2fContains(const float *aMin,
+                     const float *aMax,
+                     const float *point)
+{
+    if (point[0] < aMin[0] || point[1] < aMin[1])
+        return BH_ERROR;
+
+    if (point[0] > aMax[0] || point[1] > aMax[1])
+        return BH_ERROR;
+
+    return BH_OK;
+}
+
+
+int BH_Box2fEnclose(const float *points,
+                    size_t size,
+                    float *outMin,
+                    float *outMax)
+{
+    float tmp1[2], tmp2[2];
+    size_t i;
+
+    if (!size)
+        return BH_ERROR;
+
+    memcpy(tmp1, points, sizeof(tmp1));
+    memcpy(tmp2, points, sizeof(tmp2));
+
+    for (i = 1; i < size; i++)
+    {
+        BH_Vec2fMin(tmp1, points + i * 2, tmp1);
+        BH_Vec2fMax(tmp2, points + i * 2, tmp2);
+    }
+
+    memcpy(outMin, tmp1, sizeof(tmp1));
+    memcpy(outMax, tmp2, sizeof(tmp2));
+    return BH_OK;
+}