From: Tuukka Lehtonen <tuukka.lehtonen@semantum.fi>
Date: Wed, 8 Apr 2020 20:28:11 +0000 (+0300)
Subject: Added vtkCameraAndSelectorAction.setViewDir(Vector3d)
X-Git-Tag: v1.43.0~22
X-Git-Url: https://gerrit.simantics.org/r/gitweb?a=commitdiff_plain;h=refs%2Fchanges%2F19%2F4119%2F1;p=simantics%2F3d.git

Added vtkCameraAndSelectorAction.setViewDir(Vector3d)

Allows setting the camera view direction without changing the focal
point.

gitlab #118

Change-Id: I33421fb46e05c62892a396203681838131b0b382
(cherry picked from commit 6325452591b2a854f82ac913fe4f61e3df2f922d)
---

diff --git a/org.simantics.g3d.vtk/src/org/simantics/g3d/vtk/swt/vtkCameraAndSelectorAction.java b/org.simantics.g3d.vtk/src/org/simantics/g3d/vtk/swt/vtkCameraAndSelectorAction.java
index a5ea6149..e177834e 100644
--- a/org.simantics.g3d.vtk/src/org/simantics/g3d/vtk/swt/vtkCameraAndSelectorAction.java
+++ b/org.simantics.g3d.vtk/src/org/simantics/g3d/vtk/swt/vtkCameraAndSelectorAction.java
@@ -477,4 +477,17 @@ public class vtkCameraAndSelectorAction extends vtkSwtAction implements ISelecti
 		return Math.abs(dx * dir.x) + Math.abs(dy * dir.y) + Math.abs(dz * dir.z);
 	}
 
+	public void setViewDir(Vector3d direction) {
+		Vector3d focal = new Vector3d(cam.GetFocalPoint());
+		Vector3d pos = new Vector3d(cam.GetPosition());
+		Vector3d dir = new Vector3d(pos);
+		dir.sub(focal);
+		double distance = dir.length();
+		dir.scaleAdd(distance, direction, focal);
+		cam.SetPosition(dir.x, dir.y, dir.z);
+		focus(focal.x, focal.y, focal.z);
+		//panel.UpdateLight();
+		panel.refresh();
+	}
+
 }