From BlenderWiki
Matrix Indexing
Changes for 2.62 in Matrix Indexing
Matrix indexing has now been changed to be row first as is usual in math. This has some important consequences for script writers. See below for a list of Gotchas.
Cheat Sheet
matrix[j][k] --> matrix[k][j] matrix[j][k] --> matrix.col[j][k] matrix[j] --> matrix.col[j] matrix = Matrix((a, b, c), (d, e, f), (g, h, i)) --> Matrix((a, d, g), (b, e, h), (c, f, i)) len(matrix) --> len(matrix[0]) len(matrix[0]) --> len(matrix) translation = matrix[3][0:3] --> matrix.translation[:] matrix[3][0:3] = x, y, z --> matrix.translation = x, y, z for vec in mat: ... --> for vec in mat.col: ... mat.col_size --> len(mat.row) mat.row_size --> len(mat.col)
Gotchas for Script Writers
Matrix Index Order
Matrices now access the row with the first index and the column with the second index. So,
matrix = Matrix() first_row = matrix[0]
Would access the first row of the matrix. Previously it was the first column.
This also means that matrix element access is now by row first indexing as is usual in math. That is, to access the second row's third element;
element = matrix[1][2]
In addition, care must be taken when looping over matrices. For example;
for row in matrix: for item in row: print(item)
will print all the items in the matrix reading the matrix from left to right and top to bottom. Previously this would have been from top to bottom and left to right.
Matrix Construction
When explicitly constructing new matrices, the rows are input as tuples.
matrix = Matrix(((1, 2), (3, 4)))
So this means matrix[0] == (1, 2) and matrix[1] == (3, 4).
Previously matrices were constructed by parsing tuples of the columns. The result is that all explicit matrix construction must be transposed.
Matrix Length
Matrix length,
len(matrix)
now returns the number of rows in the matrix. Previously this returned the number of columns.
Matrix Translation Component
For a 4 x 4 matrix you can now get and set the translation component using;
matrix.translationPreviously, you could could get the translation component from the third matrix item.
Matrix Column / Row Size
The col_size and row_size attributes have been removed, instead use;
len(mat.col) # to replace mat.row_size len(mat.row) # to replace mat.col_size
Scripts to be Changed / Checked
Prefix with an '-' when checked. Prefix with an '*' when changes needed to be made.
- addons/add_curve_aceous_galore.py - addons/add_curve_ivygen.py - addons/add_curve_sapling/__init__.py - addons/add_curve_sapling/presets/black_tupelo.py - addons/add_curve_sapling/presets/ca_black_oak.py - addons/add_curve_sapling/presets/quaking_aspen.py - addons/add_curve_sapling/presets/weeping_willow.py - addons/add_curve_sapling/utils.py - addons/add_curve_torus_knots.py - addons/add_mesh_BoltFactory/Boltfactory.py - addons/add_mesh_BoltFactory/__init__.py * addons/add_mesh_BoltFactory/createMesh.py - addons/add_mesh_BoltFactory/preset_utils.py - addons/add_mesh_BoltFactory/presets/M10.py - addons/add_mesh_BoltFactory/presets/M12.py - addons/add_mesh_BoltFactory/presets/M3.py - addons/add_mesh_BoltFactory/presets/M4.py - addons/add_mesh_BoltFactory/presets/M5.py - addons/add_mesh_BoltFactory/presets/M6.py - addons/add_mesh_BoltFactory/presets/M8.py - addons/add_mesh_ant_landscape.py - addons/add_mesh_extra_objects/__init__.py - addons/add_mesh_extra_objects/add_mesh_3d_function_surface.py - addons/add_mesh_extra_objects/add_mesh_extra_objects.py - addons/add_mesh_extra_objects/add_mesh_gears.py - addons/add_mesh_extra_objects/add_mesh_gemstones.py - addons/add_mesh_extra_objects/add_mesh_polysphere.py - addons/add_mesh_extra_objects/add_mesh_pyramid.py - addons/add_mesh_extra_objects/add_mesh_supertoroid.py - addons/add_mesh_extra_objects/add_mesh_twisted_torus.py - addons/add_mesh_pipe_joint.py - addons/add_mesh_solid.py * addons/animation_add_corrective_shape_key.py - addons/animation_animall.py - addons/animation_rotobezier.py - addons/curve_simplify.py - addons/development_api_navigator.py - addons/development_icon_get.py - addons/game_engine_save_as_runtime.py - addons/io_anim_acclaim/__init__.py - addons/io_anim_bvh/__init__.py - addons/io_anim_bvh/export_bvh.py - addons/io_anim_bvh/import_bvh.py - addons/io_anim_c3d/__init__.py - addons/io_anim_c3d/import_c3d.py - addons/io_anim_camera.py - addons/io_anim_nuke_chan/__init__.py - addons/io_anim_nuke_chan/export_nuke_chan.py - addons/io_anim_nuke_chan/import_nuke_chan.py - addons/io_coat3D/__init__.py - addons/io_coat3D/coat.py - addons/io_coat3D/tex.py - addons/io_convert_image_to_mesh_img/__init__.py - addons/io_convert_image_to_mesh_img/import_img.py - addons/io_curve_svg/__init__.py - addons/io_curve_svg/import_svg.py - addons/io_curve_svg/svg_colors.py - addons/io_export_after_effects.py * addons/io_export_directx_x.py - addons/io_export_pc2.py - addons/io_export_unreal_psk_psa.py - addons/io_import_gimp_image_to_scene.py - addons/io_import_images_as_planes.py * addons/io_import_scene_dxf.py - addons/io_import_scene_lwo.py addons/io_import_scene_mhx.py * addons/io_import_scene_unreal_psk.py - addons/io_mesh_pdb/__init__.py - addons/io_mesh_pdb/import_pdb.py - addons/io_mesh_ply/__init__.py - addons/io_mesh_ply/export_ply.py - addons/io_mesh_ply/import_ply.py - addons/io_mesh_raw/__init__.py - addons/io_mesh_raw/export_raw.py - addons/io_mesh_raw/import_raw.py - addons/io_mesh_stl/__init__.py - addons/io_mesh_stl/blender_utils.py - addons/io_mesh_stl/stl_utils.py - addons/io_mesh_uv_layout/__init__.py - addons/io_mesh_uv_layout/export_uv_eps.py - addons/io_mesh_uv_layout/export_uv_png.py - addons/io_mesh_uv_layout/export_uv_svg.py - addons/io_scene_3ds/__init__.py * addons/io_scene_3ds/export_3ds.py * addons/io_scene_3ds/import_3ds.py - addons/io_scene_fbx/__init__.py * addons/io_scene_fbx/export_fbx.py - addons/io_scene_m3/__init__.py - addons/io_scene_m3/import_m3.py - addons/io_scene_map/__init__.py - addons/io_scene_map/export_map.py - addons/io_scene_obj/__init__.py - addons/io_scene_obj/export_obj.py - addons/io_scene_obj/import_obj.py - addons/io_scene_x3d/__init__.py - addons/io_scene_x3d/export_x3d.py - addons/io_scene_x3d/import_x3d.py - addons/io_shape_mdd/__init__.py - addons/io_shape_mdd/export_mdd.py - addons/io_shape_mdd/import_mdd.py - addons/light_field_tools/__init__.py - addons/light_field_tools/light_field_tools.py - addons/mesh_bsurfaces.py - addons/mesh_inset/__init__.py - addons/mesh_inset/geom.py - addons/mesh_inset/model.py - addons/mesh_inset/offset.py - addons/mesh_inset/triquad.py - addons/mesh_looptools.py --- note, this needs some care taken! <- fixed by original author - addons/mesh_relax.py addons/mocap/__init__.py addons/mocap/mocap_constraints.py addons/mocap/mocap_tools.py addons/mocap/retarget.py - addons/modules/add_utils.py - addons/modules/constants_utils.py - addons/modules/cursor_utils.py - addons/modules/extensions_framework/__init__.py - addons/modules/extensions_framework/ui.py - addons/modules/extensions_framework/util.py - addons/modules/extensions_framework/validate.py - addons/modules/geometry_utils.py - addons/modules/misc_utils.py - addons/modules/ui_utils.py - addons/netrender/__init__.py - addons/netrender/balancing.py - addons/netrender/client.py - addons/netrender/master.py - addons/netrender/master_html.py - addons/netrender/model.py - addons/netrender/operators.py - addons/netrender/repath.py - addons/netrender/slave.py - addons/netrender/thumbnail.py - addons/netrender/ui.py - addons/netrender/utils.py - addons/netrender/versioning.py - addons/object_add_chain.py - addons/object_animrenderbake.py - addons/object_cloud_gen.py - addons/object_fracture/__init__.py - addons/object_fracture/fracture_ops.py - addons/object_fracture/fracture_setup.py - addons/object_grease_scatter.py - addons/paint_palette.py - addons/render_copy_settings/__init__.py - addons/render_copy_settings/operator.py - addons/render_copy_settings/panel.py - addons/render_copy_settings/presets.py - addons/render_povray/__init__.py * addons/render_povray/render.py - addons/render_povray/ui.py - addons/render_povray/update_files.py - addons/render_renderfarmfi.py - addons/rigify/__init__.py - addons/rigify/generate.py - addons/rigify/metarig_menu.py - addons/rigify/metarigs/__init__.py - addons/rigify/metarigs/human.py - addons/rigify/rig_ui_template.py - addons/rigify/rigs/__init__.py - addons/rigify/rigs/basic/__init__.py - addons/rigify/rigs/basic/copy.py - addons/rigify/rigs/basic/copy_chain.py - addons/rigify/rigs/biped/__init__.py - addons/rigify/rigs/biped/arm/__init__.py - addons/rigify/rigs/biped/arm/deform.py - addons/rigify/rigs/biped/arm/fk.py - addons/rigify/rigs/biped/arm/ik.py - addons/rigify/rigs/biped/leg/__init__.py - addons/rigify/rigs/biped/leg/deform.py - addons/rigify/rigs/biped/leg/fk.py - addons/rigify/rigs/biped/leg/ik.py - addons/rigify/rigs/finger.py - addons/rigify/rigs/misc/__init__.py - addons/rigify/rigs/misc/delta.py - addons/rigify/rigs/neck_short.py - addons/rigify/rigs/palm.py - addons/rigify/rigs/spine.py - addons/rigify/ui.py - addons/rigify/utils.py - addons/space_view3d_3d_navigation.py - addons/space_view3d_copy_attributes.py - addons/space_view3d_materials_utils.py - addons/space_view3d_math_vis/__init__.py * addons/space_view3d_math_vis/draw.py - addons/space_view3d_math_vis/utils.py - addons/space_view3d_panel_measure.py - addons/space_view3d_screencast_keys.py - addons/space_view3d_spacebar_menu.py - addons/system_blend_info.py - addons/system_demo_mode/__init__.py - addons/system_demo_mode/config.py - addons/system_demo_mode/demo_mode.py - addons/system_property_chart.py - addons/texture_paint_layer_manager.py
contrib
addons_contrib/add_mesh_beam_builder.py addons_contrib/add_mesh_column.py addons_contrib/add_mesh_rocks/__init__.py addons_contrib/add_mesh_rocks/rockgen.py addons_contrib/add_mesh_rocks/settings.py addons_contrib/add_mesh_rocks/utils.py addons_contrib/add_mesh_stairs/__init__.py addons_contrib/add_mesh_stairs/general.py addons_contrib/add_mesh_stairs/post.py addons_contrib/add_mesh_stairs/rail.py addons_contrib/add_mesh_stairs/retainer.py addons_contrib/add_mesh_stairs/stairbuilder.py addons_contrib/add_mesh_stairs/stringer.py addons_contrib/add_mesh_stairs/tread.py addons_contrib/add_mesh_walls/Blocks.py addons_contrib/add_mesh_walls/Wallfactory.py addons_contrib/add_mesh_walls/__init__.py addons_contrib/animation_motion_trail.py addons_contrib/btrace/__init__.py addons_contrib/btrace/bTrace.py addons_contrib/cmu_mocap_browser/__init__.py addons_contrib/cmu_mocap_browser/library.py addons_contrib/cursor_control/__init__.py addons_contrib/cursor_control/data.py addons_contrib/cursor_control/history.py addons_contrib/cursor_control/memory.py addons_contrib/cursor_control/operators.py addons_contrib/cursor_control/ui.py addons_contrib/curve_tools.py addons_contrib/development_class_viewer.py addons_contrib/game_engine_ragdolls_kit/__init__.py addons_contrib/game_engine_ragdolls_kit/brik.py addons_contrib/game_engine_ragdolls_kit/brik_funcs.py addons_contrib/game_engine_ragdolls_kit/templates/brik_init_ragdoll.py addons_contrib/game_engine_ragdolls_kit/templates/brik_load.py addons_contrib/game_engine_ragdolls_kit/templates/brik_spawn.py addons_contrib/geodesic_domes/__init__.py addons_contrib/geodesic_domes/add_shape_geodesic.py addons_contrib/geodesic_domes/forms_259.py addons_contrib/geodesic_domes/geodesic_classes_259.py addons_contrib/geodesic_domes/third_domes_panel.py addons_contrib/geodesic_domes/vefm_259.py addons_contrib/gpencil_retopo/__init__.py addons_contrib/gpencil_retopo/retopo.py addons_contrib/gyes/__init__.py addons_contrib/gyes/random_material_generator.py addons_contrib/gyes/random_texture_generator.py addons_contrib/io_export_dxf/__init__.py addons_contrib/io_export_dxf/draw_blenders/__init__.py addons_contrib/io_export_dxf/export_dxf.py addons_contrib/io_export_dxf/model/__init__.py addons_contrib/io_export_dxf/model/dxfLibrary.py addons_contrib/io_export_dxf/model/migiusModel.py addons_contrib/io_export_dxf/model/model.py addons_contrib/io_export_dxf/operator.py addons_contrib/io_export_dxf/primitive_exporters/__init__.py addons_contrib/io_export_dxf/primitive_exporters/base_exporter.py addons_contrib/io_export_dxf/primitive_exporters/camera_exporter.py addons_contrib/io_export_dxf/primitive_exporters/curve_exporter.py addons_contrib/io_export_dxf/primitive_exporters/empty_exporter.py addons_contrib/io_export_dxf/primitive_exporters/insert_exporter.py addons_contrib/io_export_dxf/primitive_exporters/lamp_exporter.py addons_contrib/io_export_dxf/primitive_exporters/mesh_exporter.py addons_contrib/io_export_dxf/primitive_exporters/text_exporter.py addons_contrib/io_export_dxf/primitive_exporters/viewborder_exporter.py addons_contrib/io_export_md3.py addons_contrib/io_import_BrushSet.py addons_contrib/io_import_LRO_Lola_MGS_Mola_img.py addons_contrib/io_import_fbx.py addons_contrib/io_import_lipSync_Importer.py addons_contrib/io_import_voodoo_camera.py addons_contrib/io_mesh_wow_mdl.py addons_contrib/io_mesh_xyz/__init__.py addons_contrib/io_mesh_xyz/import_xyz.py addons_contrib/io_points_pcd/__init__.py addons_contrib/io_points_pcd/pcd_utils.py addons_contrib/io_points_pcd/pcdparser.py addons_contrib/io_scene_ms3d/__init__.py addons_contrib/io_scene_ms3d/ms3d_export.py addons_contrib/io_scene_ms3d/ms3d_import.py addons_contrib/io_scene_ms3d/ms3d_spec.py addons_contrib/io_scene_ms3d/ms3d_utils.py addons_contrib/lamp_geographical_sun.py addons_contrib/mesh_edge_intersection_tools.py addons_contrib/mesh_inset_extrude.py addons_contrib/mesh_normal_smooth.py addons_contrib/mesh_seam_from_uv_isles.py addons_contrib/mesh_select_vertex_groups.py addons_contrib/mesh_vertex_slide.py addons_contrib/object_batch_rename_datablocks.py addons_contrib/object_drop_to_ground.py addons_contrib/render_clay.py addons_contrib/render_to_print.py addons_contrib/space_view3d_add_surround_cameras.py addons_contrib/space_view3d_align_tools.py addons_contrib/space_view3d_enhanced_3d_cursor.py addons_contrib/space_view3d_game_props_visualiser.py addons_contrib/space_view3d_manipulator_Menu.py addons_contrib/space_view3d_objects_panel.py - addons_contrib/system_keyboard_svg.py addons_contrib/system_theme_manager.py addons_contrib/text_editor_pasteall.py addons_contrib/wetted_mesh.py
trunk - modules
- modules/addon_utils.py - modules/animsys_refactor.py - modules/blend_render_info.py - modules/bpy/__init__.py - modules/bpy/ops.py - modules/bpy/path.py - modules/bpy/utils.py - modules/bpy_extras/__init__.py - modules/bpy_extras/anim_utils.py - modules/bpy_extras/image_utils.py * modules/bpy_extras/io_utils.py - modules/bpy_extras/keyconfig_utils.py - modules/bpy_extras/mesh_utils.py - modules/bpy_extras/object_utils.py * modules/bpy_extras/view3d_utils.py - modules/bpy_types.py - modules/bpyml.py - modules/bpyml_ui.py - modules/console/__init__.py - modules/console/complete_calltip.py - modules/console/complete_import.py - modules/console/complete_namespace.py - modules/console/intellisense.py - modules/console_python.py - modules/console_shell.py - modules/graphviz_export.py - modules/keyingsets_utils.py - modules/rna_info.py - modules/rna_prop_ui.py - modules/sys_info.py
trunk - startup
- startup/bl_operators/add_mesh_torus.py - startup/bl_operators/anim.py - startup/bl_operators/clip.py - startup/bl_operators/console.py - startup/bl_operators/image.py - startup/bl_operators/mesh.py - startup/bl_operators/object.py - startup/bl_operators/object_align.py - startup/bl_operators/object_quick_effects.py - startup/bl_operators/object_randomize_transform.py - startup/bl_operators/presets.py - startup/bl_operators/screen_play_rendered_anim.py - startup/bl_operators/sequencer.py - startup/bl_operators/uvcalc_follow_active.py - startup/bl_operators/uvcalc_lightmap.py - startup/bl_operators/uvcalc_smart_project.py - startup/bl_operators/vertexpaint_dirt.py - startup/bl_operators/view3d.py - startup/bl_operators/wm.py - startup/bl_ui/__init__.py - startup/bl_ui/properties_animviz.py - startup/bl_ui/properties_data_armature.py - startup/bl_ui/properties_data_bone.py - startup/bl_ui/properties_data_camera.py - startup/bl_ui/properties_data_curve.py - startup/bl_ui/properties_data_empty.py - startup/bl_ui/properties_data_lamp.py - startup/bl_ui/properties_data_lattice.py - startup/bl_ui/properties_data_mesh.py - startup/bl_ui/properties_data_metaball.py - startup/bl_ui/properties_data_modifier.py - startup/bl_ui/properties_data_speaker.py - startup/bl_ui/properties_game.py - startup/bl_ui/properties_material.py - startup/bl_ui/properties_object.py - startup/bl_ui/properties_object_constraint.py - startup/bl_ui/properties_particle.py - startup/bl_ui/properties_physics_cloth.py - startup/bl_ui/properties_physics_common.py - startup/bl_ui/properties_physics_dynamicpaint.py - startup/bl_ui/properties_physics_field.py - startup/bl_ui/properties_physics_fluid.py - startup/bl_ui/properties_physics_smoke.py - startup/bl_ui/properties_physics_softbody.py - startup/bl_ui/properties_render.py - startup/bl_ui/properties_scene.py - startup/bl_ui/properties_texture.py - startup/bl_ui/properties_world.py - startup/bl_ui/space_clip.py - startup/bl_ui/space_console.py - startup/bl_ui/space_dopesheet.py - startup/bl_ui/space_filebrowser.py - startup/bl_ui/space_graph.py - startup/bl_ui/space_image.py - startup/bl_ui/space_info.py - startup/bl_ui/space_logic.py - startup/bl_ui/space_nla.py - startup/bl_ui/space_node.py - startup/bl_ui/space_outliner.py - startup/bl_ui/space_sequencer.py - startup/bl_ui/space_text.py - startup/bl_ui/space_time.py - startup/bl_ui/space_userpref.py - startup/bl_ui/space_userpref_keymap.py - startup/bl_ui/space_view3d.py - startup/bl_ui/space_view3d_toolbar.py - startup/keyingsets_builtins.py
trunk - templates
- templates/addon_add_object.py - templates/background_job.py - templates/batch_export.py - templates/builtin_keyingset.py - templates/driver_functions.py - templates/gamelogic.py - templates/gamelogic_basic.py - templates/gamelogic_module.py - templates/operator_export.py - templates/operator_mesh_add.py - templates/operator_modal.py - templates/operator_modal_draw.py - templates/operator_modal_timer.py - templates/operator_modal_view3d.py - templates/operator_simple.py - templates/operator_uv.py - templates/ui_menu.py - templates/ui_menu_simple.py - templates/ui_panel_simple.py
