[Bf-committers] Camera view navigation rant

[Dalai Felinto]

> Below you can find some code for (...) Lock camera to view.
Isn't this what Ctrl+Alt+Numpad0 do? (align camera to view -- which
even takes care of non-perspective views)

On my understanding what people are ranting is for the lack of options
to move while "inside" the camera mode.

--
Dalai

2011/4/26 bartius crouch <bartius.crouch at gmail.com>:
>> 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()