/* * Copyright (c) 2008 Hypertriton, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE * USE OF THIS SOFTWARE EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ /* * Polygon tool. */ #include #include #include #include "vg.h" #include "vg_view.h" #include "icons.h" typedef struct vg_polygon_tool { VG_Tool _inherit; VG_Polygon *vpCur; int vtxCur; } VG_PolygonTool; static void Init(void *p) { VG_PolygonTool *t = p; t->vpCur = NULL; t->vtxCur = 0; } static int MouseButtonDown(void *p, VG_Vector vPos, int button) { VG_PolygonTool *t = p; VG_View *vv = VGTOOL(t)->vgv; VG *vg = vv->vg; VG_Point *pt; switch (button) { case SDL_BUTTON_LEFT: if (t->vpCur == NULL) { if ((pt = VG_NearestPoint(vv, vPos, NULL)) == NULL) { pt = VG_PointNew(vg->root, vPos); } t->vpCur = VG_PolygonNew(vg->root); VG_PolygonVertex(t->vpCur, pt); pt = VG_PointNew(vg->root, vPos); VG_PolygonVertex(t->vpCur, pt); t->vtxCur = 1; } else { if ((pt = VG_NearestPoint(vv, vPos, t->vpCur->pts[t->vtxCur])) == NULL) { pt = VG_PointNew(vg->root, vPos); } VG_PolygonVertex(t->vpCur, pt); t->vtxCur++; } return (1); case SDL_BUTTON_RIGHT: if (t->vpCur != NULL) { VG_Point *ptLast = t->vpCur->pts[t->vtxCur]; VG_PolygonDelVertex(t->vpCur, t->vtxCur); (void)VG_Delete(ptLast); /* No-op if in use */ t->vpCur = NULL; t->vtxCur = 0; } return (1); default: return (0); } } static void PostDraw(void *p, VG_View *vv) { VG_PolygonTool *t = p; int x, y; VG_GetViewCoords(vv, VGTOOL(t)->vCursor, &x,&y); AG_DrawCircle(vv, x,y, 3, VG_MapColorRGB(vv->vg->selectionColor)); } static int MouseMotion(void *p, VG_Vector vPos, VG_Vector vRel, int b) { VG_PolygonTool *t = p; VG_View *vv = VGTOOL(t)->vgv; VG_Point *pt; if (t->vpCur != NULL) { if ((pt = VG_NearestPoint(vv, vPos, t->vpCur->pts[t->vtxCur]))) { VG_Status(vv, _("Use Point%u"), VGNODE(pt)->handle); } else { VG_Status(vv, _("Create vertex at %.2f,%.2f"), vPos.x, vPos.y); } VG_SetPosition(t->vpCur->pts[t->vtxCur], vPos); } else { if ((pt = VG_NearestPoint(vv, vPos, NULL))) { VG_Status(vv, _("Start Polygon at Point%u"), VGNODE(pt)->handle); } else { VG_Status(vv, _("Start Polygon at %.2f,%.2f"), vPos.x, vPos.y); } } return (0); } VG_ToolOps vgPolygonTool = { N_("Polygon"), N_("Create polygon from sets of points."), &vgIconPolygon, sizeof(VG_PolygonTool), 0, Init, NULL, /* destroy */ NULL, /* edit */ NULL, /* predraw */ PostDraw, NULL, /* selected */ NULL, /* deselected */ MouseMotion, MouseButtonDown, NULL, /* mousebuttonup */ NULL, /* keydown */ NULL /* keyup */ };