56 lines
1.6 KiB
Python
56 lines
1.6 KiB
Python
from mathutils import Vector
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from bpy.props import FloatVectorProperty
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class ViewOperator(bpy.types.Operator):
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'''Translate the view using mouse events.'''
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bl_idname = "view3d.modal_operator"
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bl_label = "Simple View Operator"
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offset = FloatVectorProperty(name="Offset", size=3)
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def execute(self, context):
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v3d = context.space_data
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rv3d = v3d.region_3d
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rv3d.view_location = self._initial_location + Vector(self.properties.offset)
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def modal(self, context, event):
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v3d = context.space_data
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rv3d = v3d.region_3d
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if event.type == 'MOUSEMOVE':
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self.properties.offset = (self._initial_mouse - Vector((event.mouse_x, event.mouse_y, 0.0))) * 0.02
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self.execute(context)
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elif event.type == 'LEFTMOUSE':
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return {'FINISHED'}
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elif event.type in ('RIGHTMOUSE', 'ESC'):
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rv3d.view_location = self._initial_location
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return {'CANCELLED'}
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return {'RUNNING_MODAL'}
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def invoke(self, context, event):
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if context.space_data.type == 'VIEW_3D':
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v3d = context.space_data
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rv3d = v3d.region_3d
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context.manager.add_modal_handler(self)
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if rv3d.view_perspective == 'CAMERA':
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rv3d.view_perspective = 'PERSP'
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self._initial_mouse = Vector((event.mouse_x, event.mouse_y, 0.0))
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self._initial_location = rv3d.view_location.copy()
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return {'RUNNING_MODAL'}
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else:
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self.report({'WARNING'}, "Active space must be a View3d")
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return {'CANCELLED'}
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bpy.types.register(ViewOperator)
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