[Bf-committers] Camera view navigation rant
Daniel Salazar - 3Developer.com
zanqdo at gmail.com
Tue Apr 26 23:41:13 CEST 2011
Well that's a start :)
Daniel Salazar
3Developer.com
On Tue, Apr 26, 2011 at 7:43 AM, bartius crouch
<bartius.crouch at gmail.com> wrote:
>> Also a lock camera to view option would be great so we can just move
>> the camera like we move any other viewport
>
> Like Campbell said, that isn't very hard to do in python. Below you can find
> some code for it.
> Copy the text below into the text-editor, Run Script (alt+P), go to 3d-view,
> search (spacebar) for Lock camera to view.
>
>
>
> import bpy
> import mathutils
>
>
> class ModalOperator(bpy.types.Operator):
> '''Move camera along with the viewport'''
> bl_idname = "view3d.lock_camera"
> bl_label = "Lock camera to view"
>
> @classmethod
> def poll(cls, context):
> camera = context.scene.camera
> if not camera:
> return(False)
> return(camera.name in context.scene.objects)
>
> def modal(self, context, event):
> camera = context.scene.camera
> rv3d = context.space_data.region_3d
>
> # rotation + location
> camera.matrix_world = rv3d.view_matrix.copy().inverted()
>
> # override location to take view_distance into account
> rotation = rv3d.view_matrix.copy().to_3x3().inverted()
> z_normal = mathutils.Vector([0.0, 0.0, 1.0]) * rotation
> camera.location = rv3d.view_location + (rv3d.view_distance *
> z_normal)
>
> # handle events
> if event.type in ['LEFTMOUSE', 'NUMPAD_ENTER', 'RET']:
> context.area.header_text_set()
> return {'FINISHED'}
> elif event.type == 'ESC':
> camera.matrix_world = self.camera_matrix
> context.area.header_text_set()
> return {'CANCELLED'}
>
> return {'PASS_THROUGH'}
>
> def invoke(self, context, event):
> context.window_manager.modal_handler_add(self)
> self.camera_matrix = context.scene.camera.matrix_world.copy()
> context.space_data.region_3d.view_perspective = 'PERSP'
> context.area.header_text_set("ESC to cancel, ENTER or LMB to
> confirm")
> return {'RUNNING_MODAL'}
>
>
> def register():
> bpy.utils.register_class(ModalOperator)
>
>
> def unregister():
> bpy.utils.unregister_class(ModalOperator)
>
>
> if __name__ == "__main__":
> register()
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