src/ChangeLog

2008-01-28  Michael Goffioul <address@hidden>

    * genprops.awk: Add update ('u') modifier and document the
    readonly ('r') modifier.
    * graphics.h.in (class base_scaler, class lin_scaler, class log_scaler,
    class scaler): New classes to make abstraction of the axis scale.
    (base_graphics_backend::get_screen_resolution,
    graphics_backend::get_screen_resolution): New methods.
    (axes::properties::sx, axes::properties::sy,
    axes::properties::sz): New scaler fields.
    (axes::properties::get_x_scaler, axes::properties::get_y_scaler,
    axes::properties::get_z_scaler): New accessors.
    (axes::properties::x_render, axes::properties::x_render_inv,
    axes::properties::x_gl_mat1, axes::properties::x_gl_mat2,
    axes::properties::x_zlim): New utility Matrix fields.
    (axes::properties::get_boundingbox, axes::properties::update_camera,
    axes::properites::update_aspectratios, axes::properties::update_transform,
    axes::properties::update_xscale, axes::properties::update_yscale,
    axes::properties::update_zscale, axes::properties::update_view,
    axes::properties::update_xdir, axes::properties::update_ydir,
    axes::properties::update_zdir): New updater methods.
    (axes::properties::init): Initialize sx, sy, sz and x_zlim correctly.
    (axes::properties::position): Use valid default position value.
    (axes::properties::xscale, axes::properties::yscale,
    axes::properties::zscale, axes::properties::xdir, axes::properties::ydir,
    axes::properties::zdir, axes::properties::view): Add updater ('u')
    property modifier.
    * graphics.cc (default_axes_position, default_axes_outerposition): New
    initializers.
    (convert_position): New utility function to convert position according
    to specified units.
    (gnuplot_backend::get_screen_resolution): New method.
    (axes::properties::set_defaults): Initilize recently added properties.
    (xform_matrix, xform_vector, transform, xform_scale, xform_translate,
    scale, translate, xform, normalize, dot, cross, unit_cube, cam2xform,
    xform2cam): New inline transformation utility functions.
    (axes::properties::update_camera, axes::properties::update_aspectratios,
    axes::properties::get_boundingbox): New updater methods for computing
    transformation matrices.
    (axes::update_axis_limits): Update transformation data.