diff options
Diffstat (limited to 'Bezier.c')
| -rw-r--r-- | Bezier.c | 651 |
1 files changed, 0 insertions, 651 deletions
diff --git a/Bezier.c b/Bezier.c deleted file mode 100644 index a9d363c..0000000 --- a/Bezier.c +++ /dev/null @@ -1,651 +0,0 @@ -/* - ********************************************************************************** - * - * Project : Imagine - * File : Bezier.c - * Version : $Id$ - * Author : Patrick LECOANET - * Created On : Thu Mar 23 21:59:43 1995 - * Last Modified By: Patrick Lecoanet - * Last Modified On: Thu Mar 23 23:10:45 1995 - * Update Count : 21 - * Purpose : implementation of Bezier arc item. - * - ********************************************************************************** - */ - -/*---------------- Distribution and Copyright ------------------- - * - * This software is copyright by the CENA/DGAC/FRANCE - * - * All rights reserved. - * - * No part of the material protected by this copyright notice - * may be reproduced or utilized for commercial use in any form - * without written permission of the copyright owner. - * - * It may be reproduced or utilized for R&D use in Non Profit - * Organization - * - *---------------------------------------------------------------*/ - -/*---------------- Disclaimer ----------------------------------- - * - * This software and its documentation are provided "AS IS" and - * without any expressed or implied warranties whatsoever. - * No warranties as to performance, merchantability, or fitness - * for a particular purpose exist. - * - * Because of the diversity of conditions and hardware under - * which this software may be used, no warranty of fitness for - * a particular purpose is offered. The user is advised to - * test the software thoroughly before relying on it. The user - * must assume the entire risk and liability of using this - * software. - * - * In no event shall any person or organization of people be - * held responsible for any direct, indirect, consequential - * or inconsequential damages or lost profits. - * - *-----------------END-PROLOGUE----------------------------------*/ - - - -/* - ********************************************************************************** - * - * Included files - * - ********************************************************************************** - */ - -#include "ReliefStyConv.h" -#include "RadarP.h" -#include "ItemP.h" -#include "GeoP.h" -#include "DrawP.h" -#include "ActionsP.h" - - -/* - ********************************************************************************** - * - * Constants. - * - ********************************************************************************** - */ - -static char rcsid[] = "$Id$"; - -static char invalid_attribute[] = "RadarBezier : Invalid attribute."; -static char invalid_pixmap[] = "RadarBezier : Pixmaps used in patterns must be of depth 1."; -static char read_only_attribute[] = "This attribute is read only."; - -static RadarList smoothed_points = NULL; -static RadarList control_points = NULL; - - -/* - ********************************************************************************** - * - * Specific Bezier item record - * - ********************************************************************************** - */ - -typedef struct _BezierItemStruct { - ItemHeader header; - - /* Public data */ - int x1; - int y1; - int x2; - int y2; - int xc1; - int yc1; - int xc2; - int yc2; - unsigned char spline_steps; - unsigned int line_width; - Pixel line_foreground; - Pixmap line_pattern; - - /* Private data */ -} BezierItemStruct, *BezierItem; - - -/* - ********************************************************************************** - * - * Init -- - * - ********************************************************************************** - */ - -static void -Init(Widget rw, - Item item - ) -{ - RadarPart *rp = &(((RadarWidget) rw)->radar); - BezierItem bzr = (BezierItem) item; - - if (!smoothed_points) - smoothed_points = RadarListNew(0, sizeof(XPoint)); - if (!control_points) { - control_points = RadarListNew(4, sizeof(XPoint)); - RadarListAssertSize(control_points, 4); - } - - /* Init attributes */ - ITEM_COMMON_INIT(item, NULL, True, True, DEFAULT_BEZIER_PRIORITY); - - bzr->x1 = 0; - bzr->y1 = 0; - bzr->x2 = 0; - bzr->y2 = 0; - bzr->xc1 = 0; - bzr->yc1 = 0; - bzr->xc2 = 0; - bzr->yc2 = 0; - bzr->spline_steps = 10; - bzr->line_width = 1; - bzr->line_foreground = rp->foreground; - bzr->line_pattern = XtUnspecifiedPixmap; -} - - -/* - ********************************************************************************** - * - * Clone -- - * - ********************************************************************************** - */ - -static void -Clone(Widget rw, - Item item - ) -{ - BezierItem bzr = (BezierItem) item; - - item->user_data = NULL; -} - - -/* - ********************************************************************************** - * - * Remove -- - * - ********************************************************************************** - */ - -static void -Remove(Widget rw, - Item item - ) -{ - BezierItem bzr = (BezierItem) item; - -} - - -/* - ********************************************************************************** - * - * Configure -- - * - ********************************************************************************** - */ - -static void -Configure(Widget rw, - Item item, - RadarList attrs, - Boolean *draw_item, - Boolean *draw_label, - Boolean *compute_coord, - Boolean init - ) -{ - RadarPart *radar = &(((RadarWidget) rw)->radar); - BezierItem bzr = (BezierItem) item; - Cardinal i, num_attrs; - RadarAttr *attr; - Boolean b_value; - int value; - Pixmap pattern; - - num_attrs = RadarListSize(attrs); - for (i = 0; i < num_attrs; i++) { - attr = (RadarAttr *) RadarListAt(attrs, i); - - switch (attr->name) { - ITEM_COMMON_CONFIGURE; - - case RadarItemX: - if ((int) attr->value != bzr->x1) { - bzr->x1 = (int) attr->value; - *draw_item = *compute_coord = True; - } - break; - - case RadarItemY: - if ((int) attr->value != bzr->y1) { - bzr->y1 = (int) attr->value; - *draw_item = *compute_coord = True; - } - break; - - case RadarItemX2: - if ((int) attr->value != bzr->xc1) { - bzr->xc1 = (int) attr->value; - *draw_item = *compute_coord = True; - } - break; - - case RadarItemY2: - if ((int) attr->value != bzr->yc1) { - bzr->yc1 = (int) attr->value; - *draw_item = *compute_coord = True; - } - break; - - case RadarItemX3: - if ((int) attr->value != bzr->xc2) { - bzr->xc2 = (int) attr->value; - *draw_item = *compute_coord = True; - } - break; - - case RadarItemY3: - if ((int) attr->value != bzr->yc2) { - bzr->yc2 = (int) attr->value; - *draw_item = *compute_coord = True; - } - break; - - case RadarItemX4: - if ((int) attr->value != bzr->x2) { - bzr->x2 = (int) attr->value; - *draw_item = *compute_coord = True; - } - break; - - case RadarItemY4: - if ((int) attr->value != bzr->y2) { - bzr->y2 = (int) attr->value; - *draw_item = *compute_coord = True; - } - break; - - case RadarItemSplineSteps: - value = (unsigned char) attr->value; - if (value > 0 && - value <= 100 && - value != bzr->spline_steps) { - bzr->spline_steps = value; - *draw_item = True; - } - break; - - case RadarItemLineWidth: - if (((unsigned int) attr->value) != bzr->line_width) { - bzr->line_width = (unsigned int) attr->value; - *draw_item = *compute_coord = True; - } - break; - - case RadarItemLineForeground: - if ((Pixel) attr->value != bzr->line_foreground) { - bzr->line_foreground = (Pixel) attr->value; - *draw_item = True; - } - break; - - case RadarItemLinePattern: - if (!DRAW.ValidBitmap(XtDisplay(rw), (Pixmap) attr->value, &pattern)) { - XtAppWarning(radar->app_context, invalid_pixmap); - continue; - } - if (pattern != bzr->line_pattern) { - bzr->line_pattern = pattern; - *draw_item = True; - } - break; - - default: - XtAppWarning(radar->app_context, invalid_attribute); - break; - } - } -} - - -/* - ********************************************************************************** - * - * Query -- - * - ********************************************************************************** - */ - -static void -Query(Widget rw, - Item item, - RadarList attrs - ) -{ - RadarPart *radar = &(((RadarWidget) rw)->radar); - BezierItem bzr = (BezierItem) item; - Cardinal i, num_attrs; - RadarAttr *attr; - - num_attrs = RadarListSize(attrs); - for (i = 0; i < num_attrs; i++) { - attr = (RadarAttr *) RadarListAt(attrs, i); - - switch (attr->name) { - ITEM_COMMON_QUERY; - - case RadarItemX: - *((int *) attr->value) = bzr->x1; - break; - - case RadarItemY: - *((int *) attr->value) = bzr->y1; - break; - - case RadarItemX2: - *((int *) attr->value) = bzr->xc1; - break; - - case RadarItemY2: - *((int *) attr->value) = bzr->yc1; - break; - - case RadarItemX3: - *((int *) attr->value) = bzr->xc2; - break; - - case RadarItemY3: - *((int *) attr->value) = bzr->yc2; - break; - - case RadarItemX4: - *((int *) attr->value) = bzr->x2; - break; - - case RadarItemY4: - *((int *) attr->value) = bzr->y2; - break; - - case RadarItemSplineSteps: - *((unsigned char *) attr->value) = bzr->spline_steps; - break; - - case RadarItemLineWidth: - *((unsigned int *) attr->value) = bzr->line_width; - break; - - case RadarItemLineForeground: - *((Pixel *) attr->value) = bzr->line_foreground; - break; - - case RadarItemLinePattern: - *((Pixmap *) attr->value) = bzr->line_pattern; - break; - - default: - XtAppWarning(radar->app_context, invalid_attribute); - break; - } - } -} - - -/* - ********************************************************************************** - * - * ComputeCoordinates -- - * - ********************************************************************************** - */ - -static void -ComputeCoordinates(Widget rw, - Item item - ) -{ - RadarPart *rp = &(((RadarWidget) rw)->radar); - BezierItem bzr = (BezierItem) item; - XPoint *points; - int i, len; - Dimension dev_line_width; - - ResetBBox(&item->item_bounding_box); - if (!bzr->line_width) - return; - - points = (XPoint *) RadarListArray(control_points); - points[0].x = X_TO_DEVICE(rp, bzr->x1); - points[0].y = Y_TO_DEVICE(rp, bzr->y1); - points[1].x = X_TO_DEVICE(rp, bzr->xc1); - points[1].y = Y_TO_DEVICE(rp, bzr->yc1); - points[2].x = X_TO_DEVICE(rp, bzr->xc2); - points[2].y = Y_TO_DEVICE(rp, bzr->yc2); - points[3].x = X_TO_DEVICE(rp, bzr->x2); - points[3].y = Y_TO_DEVICE(rp, bzr->y2); - - item->connection_dev = points[0]; - - if (bzr->line_width > 1) - dev_line_width = MAX(1, LENGTH_TO_DEVICE(rp, bzr->line_width)); - else - dev_line_width = 1; - - RadarListEmpty(smoothed_points); - DRAW.GetBezierPath(control_points, bzr->spline_steps, smoothed_points); - - len = RadarListSize(smoothed_points); - points = (XPoint *) RadarListArray(smoothed_points); - for (i = 0; i < len; i++) - AddPointToBBox(&item->item_bounding_box, points[i].x, points[i].y); - - /* - * For thick lines adjust the bounding box. Add the line width in - * all directions, this overestimates the space but is fast. - */ - if (dev_line_width > 1) { - item->item_bounding_box.x -= dev_line_width; - item->item_bounding_box.y -= dev_line_width; - item->item_bounding_box.width += dev_line_width*2; - item->item_bounding_box.height += dev_line_width*2; - } -} - - -/* - ********************************************************************************** - * - * ToArea -- - * Tell if the object is entirely outside (-1), - * entirely inside (1) or in between (0). - * - ********************************************************************************** - */ - -static int -ToArea(Widget rw, - Item item, - XRectangle *area) -{ -} - - -/* - ********************************************************************************** - * - * Draw -- - * - ********************************************************************************** - */ - -static void -Draw(Widget rw, - Item item - ) -{ - RadarPart *radar = &(((RadarWidget) rw)->radar); - BezierItem bzr = (BezierItem) item; - XGCValues values; - XPoint *points; - int len, i; - Dimension dev_line_width; - - if (bzr->line_width) { - points = (XPoint *) RadarListArray(control_points); - points[0].x = X_TO_DEVICE(radar, bzr->x1); - points[0].y = Y_TO_DEVICE(radar, bzr->y1); - points[1].x = X_TO_DEVICE(radar, bzr->xc1); - points[1].y = Y_TO_DEVICE(radar, bzr->yc1); - points[2].x = X_TO_DEVICE(radar, bzr->xc2); - points[2].y = Y_TO_DEVICE(radar, bzr->yc2); - points[3].x = X_TO_DEVICE(radar, bzr->x2); - points[3].y = Y_TO_DEVICE(radar, bzr->y2); - - if (bzr->line_width > 1) - dev_line_width = MAX(1, LENGTH_TO_DEVICE(radar, bzr->line_width)); - else - dev_line_width = 1; - - RadarListEmpty(smoothed_points); - DRAW.GetBezierPath(control_points, bzr->spline_steps, smoothed_points); - - len = RadarListSize(smoothed_points); - points = (XPoint *) RadarListArray(smoothed_points); - - values.foreground = bzr->line_foreground; - values.line_width = (dev_line_width == 1) ? 0 : dev_line_width; - if (bzr->line_pattern == XtUnspecifiedPixmap) { - values.fill_style = FillSolid; - XChangeGC(XtDisplay(rw), radar->gc, - GCFillStyle | GCLineWidth | GCForeground, &values); - } - else { - values.fill_style = FillStippled; - values.stipple = bzr->line_pattern; - XChangeGC(XtDisplay(rw), radar->gc, - GCFillStyle | GCStipple | GCLineWidth | GCForeground, &values); - } - - XDrawLines(XtDisplay(rw), radar->draw_buffer, radar->gc, - points, len, CoordModeOrigin); - } -} - - -/* - ********************************************************************************** - * - * Pick -- - * - ********************************************************************************** - */ - -static Boolean -Pick(Widget rw, - Item item, - XPoint *p, - Dimension aperture, - Boolean closest, - RadarList items) -{ - RadarPart *rp = &(((RadarWidget) rw)->radar); - BezierItem bzr = (BezierItem) item; - double dist, new_dist; - XPoint *points; - int len, i; - Dimension dev_line_width; - - points = (XPoint *) RadarListArray(control_points); - points[0].x = X_TO_DEVICE(rp, bzr->x1); - points[0].y = Y_TO_DEVICE(rp, bzr->y1); - points[1].x = X_TO_DEVICE(rp, bzr->xc1); - points[1].y = Y_TO_DEVICE(rp, bzr->yc1); - points[2].x = X_TO_DEVICE(rp, bzr->xc2); - points[2].y = Y_TO_DEVICE(rp, bzr->yc2); - points[3].x = X_TO_DEVICE(rp, bzr->x2); - points[3].y = Y_TO_DEVICE(rp, bzr->y2); - - if (bzr->line_width > 1) - dev_line_width = MAX(1, LENGTH_TO_DEVICE(rp, bzr->line_width)); - else - dev_line_width = 1; - - RadarListEmpty(smoothed_points); - DRAW.GetBezierPath(control_points, bzr->spline_steps, smoothed_points); - - len = RadarListSize(smoothed_points); - points = (XPoint *) RadarListArray(smoothed_points); - - dist = 1.0e40; - for (i = 0; i < len-1; i++) { - new_dist = LineToPointDist(&points[i], &points[i+1], p); - dist = MIN(dist, new_dist); - } - - /* - * Take the line width into account if it is meaningful. - */ - if (dist != 0 && dev_line_width > 1) - dist = MAX(0.0, dist - (((double) dev_line_width)/2.0)); - - return ACTIONS.AddToPickedItems(items, item, RADAR_CURRENT_POSITION, - dist, aperture, closest); -} - - -/* - ********************************************************************************** - * - * PostScript -- - * - ********************************************************************************** - */ - -static void -PostScript(Widget rw, - Item item, - PostScriptInfo ps_info) -{ -} - - -/* - ********************************************************************************** - * - * Exported functions struct -- - * - ********************************************************************************** - */ - -static ItemClassStruct BEZIER_ITEM_CLASS = { - sizeof(BezierItemStruct), - False, - 1, - Init, - Clone, - Remove, - Configure, - Query, - ComputeCoordinates, - ToArea, - Draw, - Pick, - PostScript -}; - -RadarItemClassId RadarBezier = (RadarItemClassId) &BEZIER_ITEM_CLASS; |