Added gemspec to be able to bundle install from git.

Added IplImage#smoothness that returns :smooth, :messy, or :blank.
Rake compile will now compile the C extension code.

ext/opencv/cvpoint.cpp

@@ -0,0 +1,230 @@
+/************************************************************
+
+   cvpoint.cpp -
+
+   $Author: lsxi $
+
+   Copyright (C) 2005-2006 Masakazu Yonekura
+
+************************************************************/
+#include "cvpoint.h"
+/*
+ * Document-class: OpenCV::CvPoint
+ *
+ * This class means one point on X axis Y axis. 
+ * X and Y takes the value of the Fixnum. see also CvPoint2D32F
+ * 
+ * C structure is here, very simple.
+ *   typdef struct CvPoint{
+ *     int x;
+ *     int y;
+ *   }
+ */
+__NAMESPACE_BEGIN_OPENCV
+__NAMESPACE_BEGIN_CVPOINT
+
+VALUE rb_klass;
+
+VALUE
+rb_class()
+{
+  return rb_klass;
+}
+
+void
+define_ruby_class()
+{
+  if (rb_klass)
+    return;
+  /* 
+   * opencv = rb_define_module("OpenCV");
+   * 
+   * note: this comment is used by rdoc.
+   */
+  VALUE opencv = rb_module_opencv();
+  
+  rb_klass = rb_define_class_under(opencv, "CvPoint", rb_cObject);
+  rb_define_alloc_func(rb_klass, rb_allocate);
+  rb_define_singleton_method(rb_klass, "compatible?", RUBY_METHOD_FUNC(rb_compatible_q), 1);
+  rb_define_private_method(rb_klass, "initialize", RUBY_METHOD_FUNC(rb_initialize), -1);
+  rb_define_method(rb_klass, "x", RUBY_METHOD_FUNC(rb_x), 0);
+  rb_define_method(rb_klass, "x=", RUBY_METHOD_FUNC(rb_set_x), 1);
+  rb_define_method(rb_klass, "y", RUBY_METHOD_FUNC(rb_y), 0);
+  rb_define_method(rb_klass, "y=", RUBY_METHOD_FUNC(rb_set_y), 1);
+
+  rb_define_method(rb_klass, "to_s", RUBY_METHOD_FUNC(rb_to_s), 0);
+  rb_define_method(rb_klass, "to_ary", RUBY_METHOD_FUNC(rb_to_ary), 0);
+  rb_define_alias(rb_klass, "to_a", "to_ary");
+}
+
+/*
+ * call-seq:
+ *   combatible?(obj)
+ *
+ * Return compatibility to CvPoint. Return true if object have method #x and #y.
+ *
+ * For example.
+ *   class MyPoint
+ *     def x
+ *       1
+ *     end
+ *     def y
+ *       2
+ *     end
+ *   end
+ *   mp = MyPoint.new
+ *   CvPoint.compatible?(mp)  #=> true
+ *   CvPoint.new(mp)          #=> same as CvPoint(1, 2)
+ */
+VALUE
+rb_compatible_q(VALUE klass, VALUE object)
+{
+  return (rb_respond_to(object, rb_intern("x")) && rb_respond_to(object, rb_intern("y"))) ? Qtrue : Qfalse;
+}
+
+VALUE
+rb_allocate(VALUE klass)
+{
+  CvPoint *ptr;
+  return Data_Make_Struct(klass, CvPoint, 0, -1, ptr);
+}
+
+/*
+ * call-seq:
+ *   new -> CvPoint.new(0, 0)
+ *   new(obj) -> CvPoint.new(obj.x.to_i, obj.y.to_i)
+ *   new(x, y)
+ *
+ * Create new 2D-coordinate, (x, y). It is dropped below the decimal point.
+ *
+ * new() is same as new(0, 0)
+ *
+ * new(obj) is same as new(obj.x.to_i, obj.y.to_i)
+ */
+VALUE
+rb_initialize(int argc, VALUE *argv, VALUE self)
+{
+  VALUE obj, x, y;
+  switch (argc) {
+  case 0:
+    break;
+  case 1:
+    obj = argv[0];
+    if (rb_compatible_q(rb_klass, obj)) {
+      CVPOINT(self)->x = NUM2INT(rb_funcall(rb_funcall(obj, rb_intern("x"), 0), rb_intern("to_i"), 0));
+      CVPOINT(self)->y = NUM2INT(rb_funcall(rb_funcall(obj, rb_intern("y"), 0), rb_intern("to_i"), 0));
+    }else{
+      rb_raise(rb_eArgError, "object is not compatible %s.", rb_class2name(rb_klass));
+    }
+    break;
+  case 2:
+    x = argv[0], y = argv[1];
+    CVPOINT(self)->x = NUM2INT(x);
+    CVPOINT(self)->y = NUM2INT(y);
+    break;
+  default:
+    rb_raise(rb_eArgError, "wrong number of arguments (%d for 0..2)", argc);
+  }
+  return Qnil;    
+}
+
+/*
+ * Return parameter on x-axis.
+ */
+VALUE
+rb_x(VALUE self)
+{
+  return INT2FIX(CVPOINT(self)->x);
+}
+
+/*
+ * call-seq:
+ *   x = val
+ *
+ * Set x-axis parameter, return self.
+ * It is dropped below the decimal point.
+ *   pt = CvPoint.new
+ *   pt.x = 1.1
+ *   pt.x           #=> 1
+ *   pt.x = 100.9
+ *   pt.x           #=> 100
+ */
+VALUE
+rb_set_x(VALUE self, VALUE x)
+{
+  CVPOINT(self)->x = NUM2INT(x);
+  return self;
+}
+
+/*
+ * Return parameter on y-axis.
+ */
+VALUE
+rb_y(VALUE self)
+{
+  return INT2FIX(CVPOINT(self)->y);
+}
+
+/*
+ * call-seq:
+ *   y = val
+ *
+ * Set y-axis parameter, return self.
+ * It is dropped below the decimal point.
+ */
+VALUE
+rb_set_y(VALUE self, VALUE y)
+{
+  CVPOINT(self)->y = NUM2INT(y);
+  return self;
+}
+
+/*
+ * call-seq:
+ *   to_s -> "<OpenCV::CvPoint:(self.x,self.y)>"
+ *
+ * Return x and y by String.
+ */
+VALUE
+rb_to_s(VALUE self)
+{
+  const int i = 4;
+  VALUE str[i];
+  str[0] = rb_str_new2("<%s:(%d,%d)>");
+  str[1] = rb_str_new2(rb_class2name(CLASS_OF(self)));
+  str[2] = rb_x(self);
+  str[3] = rb_y(self);
+  return rb_f_sprintf(i, str);
+}
+
+/*
+ * call-seq:
+ *   to_ary -> [x, y]
+ *
+ * Return x and y by Array.
+ */
+VALUE
+rb_to_ary(VALUE self)
+{
+  return rb_ary_new3(2, rb_x(self), rb_y(self));
+}
+
+VALUE
+new_object()
+{
+  VALUE object = rb_allocate(rb_klass);
+  *CVPOINT(object) = cvPoint(0, 0);
+  return object;
+}
+
+
+VALUE
+new_object(CvPoint point)
+{
+  VALUE object = rb_allocate(rb_klass);
+  *CVPOINT(object) = point;
+  return object;
+}
+
+__NAMESPACE_END_CVPOINT
+__NAMESPACE_END_OPENCV