add Camera.h per bug rept from Marius Kintel

1 files changed, 65 insertions, 0 deletions

diff --git a/src/Camera.h b/src/Camera.h
new file mode 100644
index 0000000..2d2b18f
--- /dev/null
+++ b/src/Camera.h
@@ -0,0 +1,65 @@
+#ifndef OPENSCAD_CAMERA_H_
+#define OPENSCAD_CAMERA_H_
+
+// Cameras
+// Variant design is similar to value.h/value.cc
+// see GLView.cc / export_png.cc / openscad.cc for usage
+
+#include <vector>
+#include <Eigen/Geometry>
+#include <boost/variant.hpp>
+
+class NullCamera
+{
+public:
+	NullCamera(){}
+};
+
+class GimbalCamera
+{
+public:
+	GimbalCamera()
+	{
+		object_trans << 0,0,0;
+		object_rot << 35,0,25;
+		viewer_distance = 500;
+	}
+	void setup( std::vector<double> d )
+	{
+		assert( d.size() == 7 );
+		object_trans << d[0], d[1], d[2];
+		object_rot << d[3], d[4], d[5];
+		viewer_distance = d[6];
+	}
+	Eigen::Vector3d object_trans;
+	Eigen::Vector3d object_rot;
+	double viewer_distance;
+};
+
+class VectorCamera
+{
+public:
+	VectorCamera()
+	{
+		center << 0,0,0;
+		Eigen::Vector3d cameradir(1, 1, -0.5);
+		eye = center - 500 * cameradir;
+		// "up" not currently used
+	}
+	Eigen::Vector3d eye;
+	Eigen::Vector3d center; // (aka 'target')
+	Eigen::Vector3d up;
+};
+
+class Camera
+{
+public:
+	enum CameraType { NONE, GIMBAL, VECTOR };
+	typedef boost::variant<NullCamera, GimbalCamera, VectorCamera> CamVariant;
+	CamVariant value;
+	Camera() {}
+	CameraType type() { return static_cast<CameraType>(value.which()); }
+};
+
+
+#endif