Merge branch 'master' of github.com:openscad/openscad

1 files changed, 80 insertions, 0 deletions

diff --git a/src/Camera.h b/src/Camera.h
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+#ifndef OPENSCAD_CAMERA_H_
+#define OPENSCAD_CAMERA_H_
+
+/*
+
+Camera
+
+For usage, see QGLView.cc, GLView.cc, export_png.cc, openscad.cc
+
+There are two different types of cameras represented in this class:
+
+*Gimbal camera - uses Euler Angles, object translation, and viewer distance
+*Vector camera - uses 'eye', 'center', and 'up' vectors ('lookat' style)
+
+They are not necessarily kept in sync. There are two modes of
+projection, Perspective and Orthogonal.
+
+*/
+
+#include <vector>
+#include <Eigen/Geometry>
+#include "rendersettings.h"
+
+class Camera
+{
+public:
+	enum CameraType { NONE, GIMBAL, VECTOR } type;
+	enum ProjectionType { ORTHOGONAL, PERSPECTIVE } projection;
+	Camera() {
+		type = Camera::NONE;
+		projection = Camera::PERSPECTIVE;
+	}
+	Camera( enum CameraType e )
+	{
+		type = e;
+		if ( e == Camera::GIMBAL ) {
+			object_trans << 0,0,0;
+			object_rot << 35,0,25;
+			viewer_distance = 500;
+		} else if ( e == Camera::VECTOR ) {
+			center << 0,0,0;
+			Eigen::Vector3d cameradir(1, 1, -0.5);
+			eye = center - 500 * cameradir;
+		}
+		pixel_width = RenderSettings::inst()->img_width;
+		pixel_height = RenderSettings::inst()->img_height;
+		projection = Camera::PERSPECTIVE;
+	}
+
+	void setup( std::vector<double> params ) {
+		if ( params.size() == 7 ) {
+			type = Camera::GIMBAL;
+			object_trans << params[0], params[1], params[2];
+			object_rot << params[3], params[4], params[5];
+			viewer_distance = params[6];
+		} else if ( params.size() == 6 ) {
+			type = Camera::VECTOR;
+			eye << params[0], params[1], params[2];
+			center << params[3], params[4], params[5];
+		} else {
+			assert( "Gimbal cam needs 7 numbers, Vector camera needs 6" );
+		}
+	}
+
+	// Vectorcam
+	Eigen::Vector3d eye;
+	Eigen::Vector3d center; // (aka 'target')
+	Eigen::Vector3d up; // not used currently
+
+	// Gimbalcam
+	Eigen::Vector3d object_trans;
+	Eigen::Vector3d object_rot;
+	double viewer_distance;
+
+	unsigned int pixel_width;
+	unsigned int pixel_height;
+};
+
+
+#endif