Enabled arcs render after adapting OpenCNCPilot code.

Started porting iosender to C++

grbl_test.cpp

@@ -2,6 +2,8 @@
 
 #include "grbl.h"
 #include "grbl_machine.h"
+#include "gcode_parser.h"
+#include "glm/gtx/string_cast.hpp"
 
 TEST(grbl_program, default_state) {
     grbl::program pgm;
@@ -53,4 +55,46 @@ TEST(grbl_status_report, parse) {
     EXPECT_EQ(false, r.signals.bit.x_limit);
     EXPECT_EQ(false, r.signals.bit.y_limit);
     EXPECT_EQ(true, r.signals.bit.z_limit);
-}
+}
+
+TEST(grbl_parser, parse) {
+    std::string content = R"(G17 G21 G90 G94 G54
+G0 Z0.25
+X-0.5 Y0.
+Z0.1
+G01 Z0. F5.
+G02 X0. Y0.5 I0.5 J0. F2.5
+X0.5 Y0. I0. J-0.5
+X0. Y-0.5 I-0.5 J0.
+X-0.5 Y0. I0. J0.5
+G01 Z0.1 F5.
+G00 X0. Y0. Z0.25
+)";
+    std::stringstream ss;
+    ss << content;
+
+    grbl::grbl_parser parser;
+    try {
+        parser.parse(ss);
+    } catch (std::exception &e) {
+        std::cerr << e.what();
+    }
+
+    for (auto &c: parser.commands) {
+        auto line = dynamic_cast<grbl::line_motion_cmd *>(c.get());
+        if (line != nullptr) {
+            std::cout << "Line from " << glm::to_string(line->start) << " to " << glm::to_string(line->end)
+                      << std::endl;
+            continue;
+        }
+
+        auto arc = dynamic_cast<grbl::arc_motion_cmd *>(c.get());
+        if (arc != nullptr) {
+            std::cout << "Arc from " << glm::to_string(arc->start) << " to " << glm::to_string(arc->end) << std::endl;
+            continue;
+        }
+
+    }
+
+//    EXPECT_EQ(true, false);
+}