blender/release/scripts/startup/bl_ui/properties_physics_rigidbody.py

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# <pep8 compliant>
import bpy
from bpy.types import Panel


class PHYSICS_PT_rigidbody_panel:
    bl_space_type = 'PROPERTIES'
    bl_region_type = 'WINDOW'
    bl_context = "physics"


class PHYSICS_PT_rigid_body(PHYSICS_PT_rigidbody_panel, Panel):
    bl_label = "Rigid Body"
    COMPAT_ENGINES = {'BLENDER_RENDER', 'BLENDER_EEVEE'}

    @classmethod
    def poll(cls, context):
        obj = context.object
        return (obj and obj.rigid_body and
                (context.engine in cls.COMPAT_ENGINES))

    def draw(self, context):
        layout = self.layout

        ob = context.object
        rbo = ob.rigid_body

        if rbo is not None:
            layout.prop(rbo, "type", text="Type")
            row = layout.row()
            if rbo.type == 'ACTIVE':
                row.prop(rbo, "enabled", text="Dynamic")
            row.prop(rbo, "kinematic", text="Animated")

            if rbo.type == 'ACTIVE':
                layout.prop(rbo, "mass")


class PHYSICS_PT_rigid_body_collisions(PHYSICS_PT_rigidbody_panel, Panel):
    bl_label = "Rigid Body Collisions"
    COMPAT_ENGINES = {'BLENDER_RENDER', 'BLENDER_EEVEE'}

    @classmethod
    def poll(cls, context):
        obj = context.object
        return (obj and obj.rigid_body and
                (context.engine in cls.COMPAT_ENGINES))

    def draw(self, context):
        layout = self.layout

        ob = context.object
        rbo = ob.rigid_body

        layout.prop(rbo, "collision_shape", text="Shape")

        if rbo.collision_shape in {'MESH', 'CONVEX_HULL'}:
            layout.prop(rbo, "mesh_source", text="Source")

        if rbo.collision_shape == 'MESH' and rbo.mesh_source == 'DEFORM':
            layout.prop(rbo, "use_deform", text="Deforming")

        split = layout.split()

        col = split.column()
        col.label(text="Surface Response:")
        col.prop(rbo, "friction")
        col.prop(rbo, "restitution", text="Bounciness")

        col = split.column()
        col.label(text="Sensitivity:")
        if rbo.collision_shape in {'MESH', 'CONE'}:
            col.prop(rbo, "collision_margin", text="Margin")
        else:
            col.prop(rbo, "use_margin")
            sub = col.column()
            sub.active = rbo.use_margin
            sub.prop(rbo, "collision_margin", text="Margin")

        layout.prop(rbo, "collision_groups")


class PHYSICS_PT_rigid_body_dynamics(PHYSICS_PT_rigidbody_panel, Panel):
    bl_label = "Rigid Body Dynamics"
    bl_default_closed = True
    COMPAT_ENGINES = {'BLENDER_RENDER', 'BLENDER_EEVEE'}

    @classmethod
    def poll(cls, context):
        obj = context.object
        return (obj and obj.rigid_body and
                obj.rigid_body.type == 'ACTIVE' and
                (context.engine in cls.COMPAT_ENGINES))

    def draw(self, context):
        layout = self.layout

        ob = context.object
        rbo = ob.rigid_body

        #col = layout.column(align=1)
        # col.label(text="Activation:")
        # XXX: settings such as activate on collison/etc.

        split = layout.split()

        col = split.column()
        col.label(text="Deactivation:")
        col.prop(rbo, "use_deactivation")
        sub = col.column()
        sub.active = rbo.use_deactivation
        sub.prop(rbo, "use_start_deactivated")
        sub.prop(rbo, "deactivate_linear_velocity", text="Linear Vel")
        sub.prop(rbo, "deactivate_angular_velocity", text="Angular Vel")
        # TODO: other params such as time?

        col = split.column()
        col.label(text="Damping:")
        col.prop(rbo, "linear_damping", text="Translation")
        col.prop(rbo, "angular_damping", text="Rotation")


classes = (
    PHYSICS_PT_rigid_body,
    PHYSICS_PT_rigid_body_collisions,
    PHYSICS_PT_rigid_body_dynamics,
)

if __name__ == "__main__":  # only for live edit.
    from bpy.utils import register_class
    for cls in classes:
        register_class(cls)