first working version of opencsg png export from gui binary

also guiopencsgtest introduced. passes 100% of 'normal' tests

1 files changed, 37 insertions, 2 deletions

diff --git a/src/export_png.cc b/src/export_png.cc
index 179278a..0626c71 100644
--- a/src/export_png.cc
+++ b/src/export_png.cc
@@ -46,15 +46,50 @@ void export_png_with_cgal(CGAL_Nef_polyhedron *root_N, std::ostream &output)
 	csgInfo.glview->save(output);
 }
 
-void export_png_with_opencsg(CGAL_Nef_polyhedron *root_N, std::ostream &output)
+#ifdef ENABLE_OPENCSG
+#include "OpenCSGRenderer.h"
+#include <opencsg.h>
+#endif
+
+void export_png_with_opencsg(Tree &tree, std::ostream &output)
 {
-	CsgInfo csgInfo;
+#ifdef ENABLE_OPENCSG
+  CsgInfo_OpenCSG csgInfo = CsgInfo_OpenCSG();
+  AbstractNode const *root_node = tree.root();
+  int result = opencsg_prep( tree, root_node, csgInfo );
+  if ( result == 1 ) {
+		return;
+		fprintf(stderr,"Couldn't init OpenCSG chainsn");
+	}
+
 	try {
 		csgInfo.glview = new OffscreenView(512,512);
 	} catch (int error) {
 		fprintf(stderr,"Can't create OpenGL OffscreenView. Code: %i.\n", error);
 		return;
 	}
+
+	OpenCSGRenderer opencsgRenderer(csgInfo.root_chain, csgInfo.highlights_chain, csgInfo.background_chain, csgInfo.glview->shaderinfo);
+
+  Vector3d center(0,0,0);
+  double radius = 1.0;
+  if (csgInfo.root_chain) {
+    BoundingBox bbox = csgInfo.root_chain->getBoundingBox();
+    center = (bbox.min() + bbox.max()) / 2;
+    radius = (bbox.max() - bbox.min()).norm() / 2;
+  }
+
+  Vector3d cameradir(1, 1, -0.5);
+  Vector3d camerapos = center - radius*1.8*cameradir;
+  csgInfo.glview->setCamera(camerapos, center);
+  csgInfo.glview->setRenderer(&opencsgRenderer);
+  OpenCSG::setContext(0);
+  OpenCSG::setOption(OpenCSG::OffscreenSetting, OpenCSG::FrameBufferObject);
+  csgInfo.glview->paintGL();
+  csgInfo.glview->save(output);
+#else
+	fprintf(stderr,"This openscad was built without OpenCSG support\n");
+#endif
 }