/* * 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. */ /* * Line tool. */ #include #include #include #include "vg.h" #include "vg_view.h" #include "icons.h" typedef struct vg_line_tool { VG_Tool _inherit; VG_Line *vlCur; } VG_LineTool; static void Init(void *p) { VG_LineTool *t = p; t->vlCur = NULL; } static int MouseButtonDown(void *p, VG_Vector vPos, int button) { VG_LineTool *t = p; VG_View *vv = VGTOOL(t)->vgv; VG *vg = vv->vg; VG_Point *p1, *p2; switch (button) { case SDL_BUTTON_LEFT: if (t->vlCur == NULL) { if (!(p1 = VG_NearestPoint(vv, vPos, NULL))) { p1 = VG_PointNew(vg->root, vPos); } p2 = VG_PointNew(vg->root, vPos); t->vlCur = VG_LineNew(vg->root, p1, p2); } else { if ((p2 = VG_NearestPoint(vv, vPos, t->vlCur->p2))) { VG_DelRef(t->vlCur, t->vlCur->p2); VG_Delete(t->vlCur->p2); t->vlCur->p2 = p2; VG_AddRef(t->vlCur, p2); } else { VG_SetPosition(t->vlCur->p2, vPos); } t->vlCur = NULL; } return (1); case SDL_BUTTON_RIGHT: if (t->vlCur != NULL) { VG_Delete(t->vlCur); t->vlCur = NULL; } return (1); default: return (0); } } static void PostDraw(void *p, VG_View *vv) { VG_LineTool *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_LineTool *t = p; VG_View *vv = VGTOOL(t)->vgv; VG_Point *pEx; VG_Vector pos; float theta, rad; if (t->vlCur != NULL) { pEx = t->vlCur->p1; pos = VG_Pos(pEx); theta = VG_Atan2(vPos.y - pos.y, vPos.x - pos.x); rad = VG_Hypot(vPos.x - pos.x, vPos.y - pos.y); if ((pEx = VG_NearestPoint(vv, vPos, t->vlCur->p2))) { VG_Status(vv, _("Use Point%u"), VGNODE(pEx)->handle); } else { VG_Status(vv, _("Create Point at %.2f,%.2f (%.2f|%.2f\xc2\xb0)"), vPos.x, vPos.y, rad, VG_Degrees(theta)); } VG_SetPosition(t->vlCur->p2, vPos); } else { if ((pEx = VG_NearestPoint(vv, vPos, NULL))) { VG_Status(vv, _("Start Line at Point%u"), VGNODE(pEx)->handle); } else { VG_Status(vv, _("Start Line at %.2f,%.2f"), vPos.x, vPos.y); } } return (0); } VG_ToolOps vgLineTool = { N_("Line"), N_("Insert line from two points."), &vgIconLine, sizeof(VG_LineTool), 0, Init, NULL, /* destroy */ NULL, /* edit */ NULL, /* predraw */ PostDraw, NULL, /* selected */ NULL, /* deselected */ MouseMotion, MouseButtonDown, NULL, /* mousebuttonup */ NULL, /* keydown */ NULL /* keyup */ };