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gimp/app/display/gimptooltransform3dgrid.c

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/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* gimptool3dtransformgrid.c
* Copyright (C) 2019 Ell
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <gegl.h>
#include <gtk/gtk.h>
#include "libgimpbase/gimpbase.h"
#include "libgimpmath/gimpmath.h"
#include "display-types.h"
#include "widgets/gimpwidgets-utils.h"
#include "core/gimp-transform-3d-utils.h"
#include "core/gimp-utils.h"
#include "gimpdisplayshell.h"
#include "gimpdisplayshell-transform.h"
#include "gimptooltransform3dgrid.h"
#include "gimp-intl.h"
#define CONSTRAINT_MIN_DIST 8.0
#define PIXELS_PER_REVOLUTION 1000
enum
{
PROP_0,
PROP_MODE,
PROP_UNIFIED,
PROP_CONSTRAIN_AXIS,
PROP_Z_AXIS,
PROP_LOCAL_FRAME,
PROP_CAMERA_X,
PROP_CAMERA_Y,
PROP_CAMERA_Z,
PROP_OFFSET_X,
PROP_OFFSET_Y,
PROP_OFFSET_Z,
PROP_ROTATION_ORDER,
PROP_ANGLE_X,
PROP_ANGLE_Y,
PROP_ANGLE_Z,
PROP_PIVOT_3D_X,
PROP_PIVOT_3D_Y,
PROP_PIVOT_3D_Z
};
typedef enum
{
AXIS_NONE,
AXIS_X,
AXIS_Y
} Axis;
struct _GimpToolTransform3DGridPrivate
{
GimpTransform3DMode mode;
gboolean unified;
gboolean constrain_axis;
gboolean z_axis;
gboolean local_frame;
gdouble camera_x;
gdouble camera_y;
gdouble camera_z;
gdouble offset_x;
gdouble offset_y;
gdouble offset_z;
gint rotation_order;
gdouble angle_x;
gdouble angle_y;
gdouble angle_z;
gdouble pivot_x;
gdouble pivot_y;
gdouble pivot_z;
GimpTransformHandle handle;
gdouble orig_x;
gdouble orig_y;
gdouble orig_offset_x;
gdouble orig_offset_y;
gdouble orig_offset_z;
GimpMatrix3 orig_transform;
gdouble last_x;
gdouble last_y;
Axis constrained_axis;
};
/* local function prototypes */
static void gimp_tool_transform_3d_grid_constructed (GObject *object);
static void gimp_tool_transform_3d_grid_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec);
static void gimp_tool_transform_3d_grid_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec);
static gint gimp_tool_transform_3d_grid_button_press (GimpToolWidget *widget,
const GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpButtonPressType press_type);
static void gimp_tool_transform_3d_grid_motion (GimpToolWidget *widget,
const GimpCoords *coords,
guint32 time,
GdkModifierType state);
static void gimp_tool_transform_3d_grid_hover (GimpToolWidget *widget,
const GimpCoords *coords,
GdkModifierType state,
gboolean proximity);
static void gimp_tool_transform_3d_grid_hover_modifier (GimpToolWidget *widget,
GdkModifierType key,
gboolean press,
GdkModifierType state);
static gboolean gimp_tool_transform_3d_grid_get_cursor (GimpToolWidget *widget,
const GimpCoords *coords,
GdkModifierType state,
GimpCursorType *cursor,
GimpToolCursorType *tool_cursor,
GimpCursorModifier *modifier);
static void gimp_tool_transform_3d_grid_update_mode (GimpToolTransform3DGrid *grid);
static void gimp_tool_transform_3d_grid_reset_motion (GimpToolTransform3DGrid *grid);
static gboolean gimp_tool_transform_3d_grid_constrain (GimpToolTransform3DGrid *grid,
gdouble x,
gdouble y,
gdouble ox,
gdouble oy,
gdouble *tx,
gdouble *ty);
static gboolean gimp_tool_transform_3d_grid_motion_vanishing_point (GimpToolTransform3DGrid *grid,
gdouble x,
gdouble y);
static gboolean gimp_tool_transform_3d_grid_motion_move (GimpToolTransform3DGrid *grid,
gdouble x,
gdouble y);
static gboolean gimp_tool_transform_3d_grid_motion_rotate (GimpToolTransform3DGrid *grid,
gdouble x,
gdouble y);
G_DEFINE_TYPE_WITH_PRIVATE (GimpToolTransform3DGrid, gimp_tool_transform_3d_grid,
GIMP_TYPE_TOOL_TRANSFORM_GRID)
#define parent_class gimp_tool_transform_3d_grid_parent_class
static void
gimp_tool_transform_3d_grid_class_init (GimpToolTransform3DGridClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GimpToolWidgetClass *widget_class = GIMP_TOOL_WIDGET_CLASS (klass);
object_class->constructed = gimp_tool_transform_3d_grid_constructed;
object_class->set_property = gimp_tool_transform_3d_grid_set_property;
object_class->get_property = gimp_tool_transform_3d_grid_get_property;
widget_class->button_press = gimp_tool_transform_3d_grid_button_press;
widget_class->motion = gimp_tool_transform_3d_grid_motion;
widget_class->hover = gimp_tool_transform_3d_grid_hover;
widget_class->hover_modifier = gimp_tool_transform_3d_grid_hover_modifier;
widget_class->get_cursor = gimp_tool_transform_3d_grid_get_cursor;
g_object_class_install_property (object_class, PROP_MODE,
g_param_spec_enum ("mode",
NULL, NULL,
GIMP_TYPE_TRANSFORM_3D_MODE,
GIMP_TRANSFORM_3D_MODE_CAMERA,
GIMP_PARAM_READWRITE |
G_PARAM_CONSTRUCT));
g_object_class_install_property (object_class, PROP_UNIFIED,
g_param_spec_boolean ("unified",
NULL, NULL,
FALSE,
GIMP_PARAM_READWRITE |
G_PARAM_CONSTRUCT));
g_object_class_install_property (object_class, PROP_CONSTRAIN_AXIS,
g_param_spec_boolean ("constrain-axis",
NULL, NULL,
FALSE,
GIMP_PARAM_READWRITE |
G_PARAM_CONSTRUCT));
g_object_class_install_property (object_class, PROP_Z_AXIS,
g_param_spec_boolean ("z-axis",
NULL, NULL,
FALSE,
GIMP_PARAM_READWRITE |
G_PARAM_CONSTRUCT));
g_object_class_install_property (object_class, PROP_LOCAL_FRAME,
g_param_spec_boolean ("local-frame",
NULL, NULL,
FALSE,
GIMP_PARAM_READWRITE |
G_PARAM_CONSTRUCT));
g_object_class_install_property (object_class, PROP_CAMERA_X,
g_param_spec_double ("camera-x",
NULL, NULL,
-G_MAXDOUBLE,
G_MAXDOUBLE,
0.0,
GIMP_PARAM_READWRITE |
G_PARAM_CONSTRUCT));
g_object_class_install_property (object_class, PROP_CAMERA_Y,
g_param_spec_double ("camera-y",
NULL, NULL,
-G_MAXDOUBLE,
G_MAXDOUBLE,
0.0,
GIMP_PARAM_READWRITE |
G_PARAM_CONSTRUCT));
g_object_class_install_property (object_class, PROP_CAMERA_Z,
g_param_spec_double ("camera-z",
NULL, NULL,
-(1.0 / 0.0),
1.0 / 0.0,
0.0,
GIMP_PARAM_READWRITE |
G_PARAM_CONSTRUCT));
g_object_class_install_property (object_class, PROP_OFFSET_X,
g_param_spec_double ("offset-x",
NULL, NULL,
-G_MAXDOUBLE,
G_MAXDOUBLE,
0.0,
GIMP_PARAM_READWRITE |
G_PARAM_CONSTRUCT));
g_object_class_install_property (object_class, PROP_OFFSET_Y,
g_param_spec_double ("offset-y",
NULL, NULL,
-G_MAXDOUBLE,
G_MAXDOUBLE,
0.0,
GIMP_PARAM_READWRITE |
G_PARAM_CONSTRUCT));
g_object_class_install_property (object_class, PROP_OFFSET_Z,
g_param_spec_double ("offset-z",
NULL, NULL,
-G_MAXDOUBLE,
G_MAXDOUBLE,
0.0,
GIMP_PARAM_READWRITE |
G_PARAM_CONSTRUCT));
g_object_class_install_property (object_class, PROP_ROTATION_ORDER,
g_param_spec_int ("rotation-order",
NULL, NULL,
0, 6, 0,
GIMP_PARAM_READWRITE |
G_PARAM_CONSTRUCT));
g_object_class_install_property (object_class, PROP_ANGLE_X,
g_param_spec_double ("angle-x",
NULL, NULL,
-G_MAXDOUBLE,
G_MAXDOUBLE,
0.0,
GIMP_PARAM_READWRITE |
G_PARAM_CONSTRUCT));
g_object_class_install_property (object_class, PROP_ANGLE_Y,
g_param_spec_double ("angle-y",
NULL, NULL,
-G_MAXDOUBLE,
G_MAXDOUBLE,
0.0,
GIMP_PARAM_READWRITE |
G_PARAM_CONSTRUCT));
g_object_class_install_property (object_class, PROP_ANGLE_Z,
g_param_spec_double ("angle-z",
NULL, NULL,
-G_MAXDOUBLE,
G_MAXDOUBLE,
0.0,
GIMP_PARAM_READWRITE |
G_PARAM_CONSTRUCT));
g_object_class_install_property (object_class, PROP_PIVOT_3D_X,
g_param_spec_double ("pivot-3d-x",
NULL, NULL,
-G_MAXDOUBLE,
G_MAXDOUBLE,
0.0,
GIMP_PARAM_READWRITE |
G_PARAM_CONSTRUCT));
g_object_class_install_property (object_class, PROP_PIVOT_3D_Y,
g_param_spec_double ("pivot-3d-y",
NULL, NULL,
-G_MAXDOUBLE,
G_MAXDOUBLE,
0.0,
GIMP_PARAM_READWRITE |
G_PARAM_CONSTRUCT));
g_object_class_install_property (object_class, PROP_PIVOT_3D_Z,
g_param_spec_double ("pivot-3d-z",
NULL, NULL,
-G_MAXDOUBLE,
G_MAXDOUBLE,
0.0,
GIMP_PARAM_READWRITE |
G_PARAM_CONSTRUCT));
}
static void
gimp_tool_transform_3d_grid_init (GimpToolTransform3DGrid *grid)
{
grid->priv = gimp_tool_transform_3d_grid_get_instance_private (grid);
}
static void
gimp_tool_transform_3d_grid_constructed (GObject *object)
{
G_OBJECT_CLASS (parent_class)->constructed (object);
g_object_set (object,
"clip-guides", TRUE,
"dynamic-handle-size", FALSE,
NULL);
}
static void
gimp_tool_transform_3d_grid_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec)
{
GimpToolTransform3DGrid *grid = GIMP_TOOL_TRANSFORM_3D_GRID (object);
GimpToolTransform3DGridPrivate *priv = grid->priv;
switch (property_id)
{
case PROP_MODE:
priv->mode = g_value_get_enum (value);
gimp_tool_transform_3d_grid_update_mode (grid);
break;
case PROP_UNIFIED:
priv->unified = g_value_get_boolean (value);
gimp_tool_transform_3d_grid_update_mode (grid);
break;
case PROP_CONSTRAIN_AXIS:
priv->constrain_axis = g_value_get_boolean (value);
gimp_tool_transform_3d_grid_reset_motion (grid);
break;
case PROP_Z_AXIS:
priv->z_axis = g_value_get_boolean (value);
gimp_tool_transform_3d_grid_reset_motion (grid);
break;
case PROP_LOCAL_FRAME:
priv->local_frame = g_value_get_boolean (value);
gimp_tool_transform_3d_grid_reset_motion (grid);
break;
case PROP_CAMERA_X:
priv->camera_x = g_value_get_double (value);
g_object_set (grid,
"pivot-x", priv->camera_x,
NULL);
break;
case PROP_CAMERA_Y:
priv->camera_y = g_value_get_double (value);
g_object_set (grid,
"pivot-y", priv->camera_y,
NULL);
break;
case PROP_CAMERA_Z:
priv->camera_z = g_value_get_double (value);
break;
case PROP_OFFSET_X:
priv->offset_x = g_value_get_double (value);
break;
case PROP_OFFSET_Y:
priv->offset_y = g_value_get_double (value);
break;
case PROP_OFFSET_Z:
priv->offset_z = g_value_get_double (value);
break;
case PROP_ROTATION_ORDER:
priv->rotation_order = g_value_get_int (value);
break;
case PROP_ANGLE_X:
priv->angle_x = g_value_get_double (value);
break;
case PROP_ANGLE_Y:
priv->angle_y = g_value_get_double (value);
break;
case PROP_ANGLE_Z:
priv->angle_z = g_value_get_double (value);
break;
case PROP_PIVOT_3D_X:
priv->pivot_x = g_value_get_double (value);
break;
case PROP_PIVOT_3D_Y:
priv->pivot_y = g_value_get_double (value);
break;
case PROP_PIVOT_3D_Z:
priv->pivot_z = g_value_get_double (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static void
gimp_tool_transform_3d_grid_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec)
{
GimpToolTransform3DGrid *grid = GIMP_TOOL_TRANSFORM_3D_GRID (object);
GimpToolTransform3DGridPrivate *priv = grid->priv;
switch (property_id)
{
case PROP_MODE:
g_value_set_enum (value, priv->mode);
break;
case PROP_UNIFIED:
g_value_set_boolean (value, priv->unified);
break;
case PROP_CONSTRAIN_AXIS:
g_value_set_boolean (value, priv->constrain_axis);
break;
case PROP_Z_AXIS:
g_value_set_boolean (value, priv->z_axis);
break;
case PROP_LOCAL_FRAME:
g_value_set_boolean (value, priv->local_frame);
break;
case PROP_CAMERA_X:
g_value_set_double (value, priv->camera_x);
break;
case PROP_CAMERA_Y:
g_value_set_double (value, priv->camera_y);
break;
case PROP_CAMERA_Z:
g_value_set_double (value, priv->camera_z);
break;
case PROP_OFFSET_X:
g_value_set_double (value, priv->offset_x);
break;
case PROP_OFFSET_Y:
g_value_set_double (value, priv->offset_y);
break;
case PROP_OFFSET_Z:
g_value_set_double (value, priv->offset_z);
break;
case PROP_ROTATION_ORDER:
g_value_set_int (value, priv->rotation_order);
break;
case PROP_ANGLE_X:
g_value_set_double (value, priv->angle_x);
break;
case PROP_ANGLE_Y:
g_value_set_double (value, priv->angle_y);
break;
case PROP_ANGLE_Z:
g_value_set_double (value, priv->angle_z);
break;
case PROP_PIVOT_3D_X:
g_value_set_double (value, priv->pivot_x);
break;
case PROP_PIVOT_3D_Y:
g_value_set_double (value, priv->pivot_y);
break;
case PROP_PIVOT_3D_Z:
g_value_set_double (value, priv->pivot_z);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static gint
gimp_tool_transform_3d_grid_button_press (GimpToolWidget *widget,
const GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpButtonPressType press_type)
{
GimpToolTransform3DGrid *grid = GIMP_TOOL_TRANSFORM_3D_GRID (widget);
GimpToolTransform3DGridPrivate *priv = grid->priv;
priv->handle = GIMP_TOOL_WIDGET_CLASS (parent_class)->button_press (
widget, coords, time, state, press_type);
priv->orig_x = coords->x;
priv->orig_y = coords->y;
priv->orig_offset_x = priv->offset_x;
priv->orig_offset_y = priv->offset_y;
priv->orig_offset_z = priv->offset_z;
priv->last_x = coords->x;
priv->last_y = coords->y;
gimp_tool_transform_3d_grid_reset_motion (grid);
return priv->handle;
}
void
gimp_tool_transform_3d_grid_motion (GimpToolWidget *widget,
const GimpCoords *coords,
guint32 time,
GdkModifierType state)
{
GimpToolTransform3DGrid *grid = GIMP_TOOL_TRANSFORM_3D_GRID (widget);
GimpToolTransform3DGridPrivate *priv = grid->priv;
GimpMatrix3 transform;
gboolean update = TRUE;
switch (priv->handle)
{
case GIMP_TRANSFORM_HANDLE_PIVOT:
update = gimp_tool_transform_3d_grid_motion_vanishing_point (
grid, coords->x, coords->y);
break;
case GIMP_TRANSFORM_HANDLE_CENTER:
update = gimp_tool_transform_3d_grid_motion_move (
grid, coords->x, coords->y);
break;
case GIMP_TRANSFORM_HANDLE_ROTATION:
update = gimp_tool_transform_3d_grid_motion_rotate (
grid, coords->x, coords->y);
break;
default:
g_return_if_reached ();
}
if (update)
{
gimp_transform_3d_matrix (&transform,
priv->camera_x,
priv->camera_y,
priv->camera_z,
priv->offset_x,
priv->offset_y,
priv->offset_z,
priv->rotation_order,
priv->angle_x,
priv->angle_y,
priv->angle_z,
priv->pivot_x,
priv->pivot_y,
priv->pivot_z);
g_object_set (widget,
"transform", &transform,
NULL);
}
}
static void
gimp_tool_transform_3d_grid_hover (GimpToolWidget *widget,
const GimpCoords *coords,
GdkModifierType state,
gboolean proximity)
{
GIMP_TOOL_WIDGET_CLASS (parent_class)->hover (widget,
coords, state, proximity);
if (proximity &&
gimp_tool_transform_grid_get_handle (GIMP_TOOL_TRANSFORM_GRID (widget)) ==
GIMP_TRANSFORM_HANDLE_PIVOT)
{
gimp_tool_widget_set_status (widget,
_("Click-Drag to move the vanishing point"));
}
}
static void
gimp_tool_transform_3d_grid_hover_modifier (GimpToolWidget *widget,
GdkModifierType key,
gboolean press,
GdkModifierType state)
{
GimpToolTransform3DGrid *grid = GIMP_TOOL_TRANSFORM_3D_GRID (widget);
GimpToolTransform3DGridPrivate *priv = grid->priv;
GIMP_TOOL_WIDGET_CLASS (parent_class)->hover_modifier (widget,
key, press, state);
priv->local_frame = (state & gimp_get_extend_selection_mask ()) != 0;
}
static gboolean
gimp_tool_transform_3d_grid_get_cursor (GimpToolWidget *widget,
const GimpCoords *coords,
GdkModifierType state,
GimpCursorType *cursor,
GimpToolCursorType *tool_cursor,
GimpCursorModifier *modifier)
{
if (! GIMP_TOOL_WIDGET_CLASS (parent_class)->get_cursor (widget,
coords,
state,
cursor,
tool_cursor,
modifier))
{
return FALSE;
}
if (gimp_tool_transform_grid_get_handle (GIMP_TOOL_TRANSFORM_GRID (widget)) ==
GIMP_TRANSFORM_HANDLE_PIVOT)
{
*tool_cursor = GIMP_TOOL_CURSOR_TRANSFORM_3D_CAMERA;
}
return TRUE;
}
static void
gimp_tool_transform_3d_grid_update_mode (GimpToolTransform3DGrid *grid)
{
GimpToolTransform3DGridPrivate *priv = grid->priv;
if (priv->unified)
{
g_object_set (grid,
"inside-function", GIMP_TRANSFORM_FUNCTION_MOVE,
"outside-function", GIMP_TRANSFORM_FUNCTION_ROTATE,
"use-pivot-handle", TRUE,
NULL);
}
else
{
switch (priv->mode)
{
case GIMP_TRANSFORM_3D_MODE_CAMERA:
g_object_set (grid,
"inside-function", GIMP_TRANSFORM_FUNCTION_NONE,
"outside-function", GIMP_TRANSFORM_FUNCTION_NONE,
"use-pivot-handle", TRUE,
NULL);
break;
case GIMP_TRANSFORM_3D_MODE_MOVE:
g_object_set (grid,
"inside-function", GIMP_TRANSFORM_FUNCTION_MOVE,
"outside-function", GIMP_TRANSFORM_FUNCTION_MOVE,
"use-pivot-handle", FALSE,
NULL);
break;
case GIMP_TRANSFORM_3D_MODE_ROTATE:
g_object_set (grid,
"inside-function", GIMP_TRANSFORM_FUNCTION_ROTATE,
"outside-function", GIMP_TRANSFORM_FUNCTION_ROTATE,
"use-pivot-handle", FALSE,
NULL);
break;
}
}
}
static void
gimp_tool_transform_3d_grid_reset_motion (GimpToolTransform3DGrid *grid)
{
GimpToolTransform3DGridPrivate *priv = grid->priv;
GimpMatrix3 *transform;
priv->constrained_axis = AXIS_NONE;
g_object_get (grid,
"transform", &transform,
NULL);
priv->orig_transform = *transform;
g_free (transform);
}
static gboolean
gimp_tool_transform_3d_grid_constrain (GimpToolTransform3DGrid *grid,
gdouble x,
gdouble y,
gdouble ox,
gdouble oy,
gdouble *tx,
gdouble *ty)
{
GimpToolTransform3DGridPrivate *priv = grid->priv;
if (! priv->constrain_axis)
return TRUE;
if (priv->constrained_axis == AXIS_NONE)
{
GimpDisplayShell *shell;
gdouble x1, y1;
gdouble x2, y2;
shell = gimp_tool_widget_get_shell (GIMP_TOOL_WIDGET (grid));
gimp_display_shell_transform_xy_f (shell,
priv->last_x, priv->last_y,
&x1, &y1);
gimp_display_shell_transform_xy_f (shell,
x, y,
&x2, &y2);
if (hypot (x2 - x1, y2 - y1) < CONSTRAINT_MIN_DIST)
return FALSE;
if (fabs (*tx - ox) >= fabs (*ty - oy))
priv->constrained_axis = AXIS_X;
else
priv->constrained_axis = AXIS_Y;
}
if (priv->constrained_axis == AXIS_X)
*ty = oy;
else
*tx = ox;
return TRUE;
}
static gboolean
gimp_tool_transform_3d_grid_motion_vanishing_point (GimpToolTransform3DGrid *grid,
gdouble x,
gdouble y)
{
GimpToolTransform3DGridPrivate *priv = grid->priv;
GimpCoords c = {};
gdouble pivot_x;
gdouble pivot_y;
if (! gimp_tool_transform_3d_grid_constrain (grid,
x, y,
priv->last_x, priv->last_y,
&x, &y))
{
return FALSE;
}
c.x = x;
c.y = y;
GIMP_TOOL_WIDGET_CLASS (parent_class)->motion (GIMP_TOOL_WIDGET (grid),
&c, 0, 0);
g_object_get (grid,
"pivot-x", &pivot_x,
"pivot-y", &pivot_y,
NULL);
g_object_set (grid,
"camera-x", pivot_x,
"camera-y", pivot_y,
NULL);
priv->last_x = c.x;
priv->last_y = c.y;
return TRUE;
}
static gboolean
gimp_tool_transform_3d_grid_motion_move (GimpToolTransform3DGrid *grid,
gdouble x,
gdouble y)
{
GimpToolTransform3DGridPrivate *priv = grid->priv;
GimpMatrix4 matrix;
if (! priv->z_axis)
{
gdouble x1, y1, z1, w1;
gdouble x2, y2, z2, w2;
if (! priv->local_frame)
{
gimp_matrix4_identity (&matrix);
}
else
{
GimpMatrix3 transform_inv = priv->orig_transform;;
gimp_matrix3_invert (&transform_inv);
gimp_transform_3d_matrix3_to_matrix4 (&transform_inv, &matrix, 2);
}
w1 = gimp_matrix4_transform_point (&matrix,
priv->last_x, priv->last_y, 0.0,
&x1, &y1, &z1);
w2 = gimp_matrix4_transform_point (&matrix,
x, y, 0.0,
&x2, &y2, &z2);
if (w1 <= 0.0)
return FALSE;
if (! gimp_tool_transform_3d_grid_constrain (grid,
x, y,
x1, y1,
&x2, &y2))
{
return FALSE;
}
if (priv->local_frame)
{
gimp_matrix4_identity (&matrix);
gimp_transform_3d_matrix4_rotate_euler (&matrix,
priv->rotation_order,
priv->angle_x,
priv->angle_y,
priv->angle_z,
0.0, 0.0, 0.0);
gimp_matrix4_transform_point (&matrix,
x1, y1, z1,
&x1, &y1, &z1);
gimp_matrix4_transform_point (&matrix,
x2, y2, z2,
&x2, &y2, &z2);
}
if (w2 > 0.0)
{
g_object_set (grid,
"offset-x", priv->offset_x + (x2 - x1),
"offset-y", priv->offset_y + (y2 - y1),
"offset-z", priv->offset_z + (z2 - z1),
NULL);
priv->last_x = x;
priv->last_y = y;
}
else
{
g_object_set (grid,
"offset-x", priv->orig_offset_x,
"offset-y", priv->orig_offset_y,
"offset-z", priv->orig_offset_z,
NULL);
priv->last_x = priv->orig_x;
priv->last_y = priv->orig_y;
}
}
else
{
GimpVector3 axis;
gdouble amount;
if (! priv->local_frame)
{
axis.x = 0.0;
axis.y = 0.0;
axis.z = 1.0;
}
else
{
gimp_matrix4_identity (&matrix);
gimp_transform_3d_matrix4_rotate_euler (&matrix,
priv->rotation_order,
priv->angle_x,
priv->angle_y,
priv->angle_z,
0.0, 0.0, 0.0);
axis.x = matrix.coeff[0][2];
axis.y = matrix.coeff[1][2];
axis.z = matrix.coeff[2][2];
if (axis.x < 0.0)
gimp_vector3_neg (&axis);
}
amount = x - priv->last_x;
g_object_set (grid,
"offset-x", priv->offset_x + axis.x * amount,
"offset-y", priv->offset_y + axis.y * amount,
"offset-z", priv->offset_z + axis.z * amount,
NULL);
priv->last_x = x;
priv->last_y = y;
}
return TRUE;
}
static gboolean
gimp_tool_transform_3d_grid_motion_rotate (GimpToolTransform3DGrid *grid,
gdouble x,
gdouble y)
{
GimpToolTransform3DGridPrivate *priv = grid->priv;
GimpDisplayShell *shell;
GimpMatrix4 matrix;
GimpMatrix2 basis_inv;
GimpVector3 omega;
gdouble z_sign;
gboolean local_frame;
shell = gimp_tool_widget_get_shell (GIMP_TOOL_WIDGET (grid));
local_frame = priv->local_frame && (priv->constrain_axis || priv->z_axis);
if (! local_frame)
{
gimp_matrix2_identity (&basis_inv);
z_sign = 1.0;
}
else
{
{
GimpVector3 o, n, c;
gimp_matrix4_identity (&matrix);
gimp_transform_3d_matrix4_rotate_euler (&matrix,
priv->rotation_order,
priv->angle_x,
priv->angle_y,
priv->angle_z,
priv->pivot_x,
priv->pivot_y,
priv->pivot_z);
gimp_transform_3d_matrix4_translate (&matrix,
priv->offset_x,
priv->offset_y,
priv->offset_z);
gimp_matrix4_transform_point (&matrix,
0.0, 0.0, 0.0,
&o.x, &o.y, &o.z);
gimp_matrix4_transform_point (&matrix,
0.0, 0.0, 1.0,
&n.x, &n.y, &n.z);
c.x = priv->camera_x;
c.y = priv->camera_y;
c.z = priv->camera_z;
gimp_vector3_sub (&n, &n, &o);
gimp_vector3_sub (&c, &c, &o);
z_sign = gimp_vector3_inner_product (&c, &n) <= 0.0 ? +1.0 : -1.0;
}
{
GimpVector2 o, u, v;
gimp_matrix3_transform_point (&priv->orig_transform,
priv->pivot_x, priv->pivot_y,
&o.x, &o.y);
gimp_matrix3_transform_point (&priv->orig_transform,
priv->pivot_x + 1.0, priv->pivot_y,
&u.x, &u.y);
gimp_matrix3_transform_point (&priv->orig_transform,
priv->pivot_x, priv->pivot_y + 1.0,
&v.x, &v.y);
gimp_vector2_sub (&u, &u, &o);
gimp_vector2_sub (&v, &v, &o);
gimp_vector2_normalize (&u);
gimp_vector2_normalize (&v);
basis_inv.coeff[0][0] = u.x;
basis_inv.coeff[1][0] = u.y;
basis_inv.coeff[0][1] = v.x;
basis_inv.coeff[1][1] = v.y;
gimp_matrix2_invert (&basis_inv);
}
}
if (! priv->z_axis)
{
GimpVector2 scale;
gdouble norm;
gimp_matrix2_transform_point (&basis_inv,
-(y - priv->last_y),
x - priv->last_x,
&omega.x, &omega.y);
omega.z = 0.0;
if (! gimp_tool_transform_3d_grid_constrain (grid,
x, y,
0.0, 0.0,
&omega.x, &omega.y))
{
return FALSE;
}
norm = gimp_vector3_length (&omega);
if (norm > 0.0)
{
scale.x = shell->scale_x * omega.y / norm;
scale.y = shell->scale_y * omega.x / norm;
gimp_vector3_mul (&omega, gimp_vector2_length (&scale));
gimp_vector3_mul (&omega, 2.0 * G_PI / PIXELS_PER_REVOLUTION);
}
}
else
{
GimpVector2 o;
GimpVector2 v1 = {priv->last_x, priv->last_y};
GimpVector2 v2 = {x, y};
g_warn_if_fail (priv->pivot_z == 0.0);
gimp_matrix3_transform_point (&priv->orig_transform,
priv->pivot_x, priv->pivot_y,
&o.x, &o.y);
gimp_vector2_sub (&v1, &v1, &o);
gimp_vector2_sub (&v2, &v2, &o);
gimp_vector2_normalize (&v1);
gimp_vector2_normalize (&v2);
omega.x = 0.0;
omega.y = 0.0;
omega.z = atan2 (gimp_vector2_cross_product (&v1, &v2).y,
gimp_vector2_inner_product (&v1, &v2));
omega.z *= z_sign;
}
gimp_matrix4_identity (&matrix);
if (local_frame)
gimp_transform_3d_matrix4_rotate (&matrix, &omega);
gimp_transform_3d_matrix4_rotate_euler (&matrix,
priv->rotation_order,
priv->angle_x,
priv->angle_y,
priv->angle_z,
0.0, 0.0, 0.0);
if (! local_frame)
gimp_transform_3d_matrix4_rotate (&matrix, &omega);
gimp_transform_3d_matrix4_rotate_euler_decompose (&matrix,
priv->rotation_order,
&priv->angle_x,
&priv->angle_y,
&priv->angle_z);
priv->last_x = x;
priv->last_y = y;
g_object_set (grid,
"angle-x", priv->angle_x,
"angle-y", priv->angle_y,
"angle-z", priv->angle_z,
NULL);
return TRUE;
}
/* public functions */
GimpToolWidget *
gimp_tool_transform_3d_grid_new (GimpDisplayShell *shell,
gdouble x1,
gdouble y1,
gdouble x2,
gdouble y2,
gdouble camera_x,
gdouble camera_y,
gdouble camera_z)
{
g_return_val_if_fail (GIMP_IS_DISPLAY_SHELL (shell), NULL);
return g_object_new (GIMP_TYPE_TOOL_TRANSFORM_3D_GRID,
"shell", shell,
"x1", x1,
"y1", y1,
"x2", x2,
"y2", y2,
"camera-x", camera_x,
"camera-y", camera_y,
"camera-z", camera_z,
"pivot-3d-x", (x1 + x2) / 2.0,
"pivot-3d-y", (y1 + y2) / 2.0,
"pivot-3d-z", 0.0,
NULL);
}
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