shape ops work in progress

add quartic solution for intersecting quadratics

git-svn-id: http://skia.googlecode.com/svn/trunk@5541 2bbb7eff-a529-9590-31e7-b0007b416f81

1 files changed, 27 insertions, 0 deletions

diff --git a/experimental/Intersection/QuadraticParameterization.h b/experimental/Intersection/QuadraticParameterization.h
new file mode 100644
index 0000000000..5c651b61cf
--- /dev/null
+++ b/experimental/Intersection/QuadraticParameterization.h
@@ -0,0 +1,27 @@
+#include "DataTypes.h"
+
+class QuadImplicitForm {
+public:
+    QuadImplicitForm(const Quadratic& q);
+    bool implicit_match(const QuadImplicitForm& two) const;
+    
+    double x2() const { return p[xx_coeff]; }
+    double xy() const { return p[xy_coeff]; }
+    double y2() const { return p[yy_coeff]; }
+    double x() const { return p[x_coeff]; }
+    double y() const { return p[y_coeff]; }
+    double c() const { return p[c_coeff]; }
+
+private:
+    enum Coeffs {
+        xx_coeff,
+        xy_coeff,
+        yy_coeff,
+        x_coeff,
+        y_coeff,
+        c_coeff,
+        coeff_count
+    };
+
+    double p[coeff_count];
+};