Script templates, metaball creation script from forTe, and camera script from macouno

release/scripts/scripttemplate_camer_object.py

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+#!BPY
+"""
+Name: 'Camera/Object Example'
+Blender: 245
+Group: 'ScriptTemplate'
+Tooltip: 'Script template for setting the camera direction'
+"""
+
+from Blender import Window
+import bpy
+
+script_data = \
+'''#!BPY
+"""
+Name: 'My Camera script'
+Blender: 245
+Group: 'Object'
+Tooltip: 'Rotate the camera to center on the active object'
+"""
+
+import Blender
+from Blender import Window, Scene, Draw, Mathutils
+
+# Rotate the camera in such a way that it centers on the currently active object
+def RotCamToOb(cam, ob):
+	
+	# Get the camera matrix
+	camMat = cam.getMatrix('worldspace');
+	
+	# Get the location of the camera and object and make sure they're vectors
+	camLoc = Mathutils.Vector(cam.loc)
+	obLoc = Mathutils.Vector(ob.loc)
+	
+	# Get the vector (direction) from the camera to the object
+	newVec =  obLoc - camLoc
+	
+	# Make a quaternion that points the camera along the vector
+	newQuat = newVec.toTrackQuat('-z', 'y')
+	
+	# Convert the new quaternion to a rotation matrix (and resize it to 4x4 so it matches the other matrices)
+	rotMat = newQuat.toMatrix().resize4x4()
+	
+	# Make a matrix with only the current location of the camera
+	transMat = Mathutils.TranslationMatrix(camMat.translationPart());
+	
+	# Multiply the rotation and translation matrixes to make 1 matrix with all data
+	newMat = rotMat * transMat
+		
+	# Now we make this matrix the camera matrix and voila done!
+	cam.setMatrix(newMat)
+
+#Make sure blender and the objects are in the right state and start doing stuff
+def SceneCheck():
+
+	# Show a neat waitcursor whilst the script runs
+	Window.WaitCursor(1)
+
+	# If we are in edit mode, go out of edit mode and store the status in a var
+	emode = int(Window.EditMode())
+	if emode: Window.EditMode(0)
+
+	# Get the scene, the camera and the currently active object
+	scn = Scene.GetCurrent()
+	cam = scn.getCurrentCamera()
+	ob = scn.getActiveObject()
+
+	# Lets do some checks to make sure we have everything
+	# And if we don't then call a return which stops the entire script
+	if not cam:
+		Draw.PupMenu('Error, no active camera, aborting.')
+		return
+		
+	if not ob:
+		Draw.PupMenu('Error, no active object, aborting.')
+		return
+		
+	if cam == ob:
+		Draw.PupMenu('Error, select an object other than the camera, aborting.')
+		return
+		
+	# Start the main function of the script if we didn't encounter any errors
+	RotCamToOb(cam, ob)
+
+	# Update the scene
+	scn.update()
+
+	# Redraw the 3d view so we can instantly see what was changed
+	Window.Redraw(Window.Types.VIEW3D)
+
+	# If we were in edit mode when the script started, go back into edit mode
+	if emode: Window.EditMode(1)
+
+	# Remove the waitcursor
+	Window.WaitCursor(0)
+
+# Start the script
+SceneCheck()
+
+'''
+
+new_text = bpy.data.texts.new('pyconstraint_template.py')
+new_text.write(script_data)
+bpy.data.texts.active = new_text
+Window.RedrawAll()