initial import

[vym] / geometry.h

diff --git a/geometry.h b/geometry.h
new file mode 100644 (file)
index 0000000..f863a7c
--- /dev/null
+++ b/geometry.h
@@ -0,0 +1,34 @@
+#ifndef GEOMETRY_H
+#define GEOMETRY_H
+
+#include <QPointF>
+#include <QRectF>
+#include <QPolygonF>
+
+QRectF addBBox(QRectF r1, QRectF r2);
+bool inBox(const QPointF &p, const QRectF &box);
+
+QPointF normalize (const QPointF &p);
+
+
+qreal dotProduct (const QPointF &a, const QPointF &b);
+
+class PolygonCollisionResult {
+public:
+    // Are the polygons going to intersect forward in time?
+    bool willIntersect;
+
+    // Are the polygons currently intersecting?
+    bool intersect;
+
+    // The translation to apply to the first polygon to push the polygons apart.
+    QPointF minTranslation;
+};
+
+
+void ProjectPolygon(QPointF axis, QPolygonF polygon, qreal &min, qreal &max) ;
+qreal intervalDistance(qreal minA, qreal maxA, qreal minB, qreal maxB);
+PolygonCollisionResult PolygonCollision(QPolygonF polygonA, 
+                              QPolygonF polygonB, QPointF velocity);
+
+#endif