1 /*
2 * Copyright (c) 2008 Hypertriton, Inc. <http://hypertriton.com/>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
15 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
18 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
20 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
21 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
22 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
23 * USE OF THIS SOFTWARE EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26 /*
27 * Circle tool.
28 */
29
30 #include <agar/core/core.h>
31 #include <agar/gui/widget.h>
32 #include <agar/gui/primitive.h>
33 #include <agar/gui/iconmgr.h>
34 #include <agar/vg/vg.h>
35 #include <agar/vg/vg_view.h>
36 #include <agar/vg/icons.h>
37
38 typedef struct vg_circle_tool {
39 VG_Tool _inherit;
40 VG_Circle *vcCur;
41 } VG_CircleTool;
42
43 static void
Init(void * p)44 Init(void *p)
45 {
46 VG_CircleTool *t = p;
47
48 t->vcCur = NULL;
49 }
50
51 static __inline__ void
AdjustRadius(VG_Circle * vc,VG_Vector vPos)52 AdjustRadius(VG_Circle *vc, VG_Vector vPos)
53 {
54 vc->r = VG_Distance(vPos, VG_Pos(vc->p));
55 }
56
57 static int
MouseButtonDown(void * p,VG_Vector vPos,int button)58 MouseButtonDown(void *p, VG_Vector vPos, int button)
59 {
60 VG_CircleTool *t = p;
61 VG_View *vv = VGTOOL(t)->vgv;
62 VG *vg = vv->vg;
63 VG_Point *pCenter;
64
65 switch (button) {
66 case AG_MOUSE_LEFT:
67 if (t->vcCur == NULL) {
68 if (!(pCenter = VG_NearestPoint(vv, vPos, NULL))) {
69 pCenter = VG_PointNew(vg->root, vPos);
70 }
71 t->vcCur = VG_CircleNew(vg->root, pCenter, 1.0f);
72 AdjustRadius(t->vcCur, vPos);
73 } else {
74 AdjustRadius(t->vcCur, vPos);
75 t->vcCur = NULL;
76 }
77 return (1);
78 case AG_MOUSE_RIGHT:
79 if (t->vcCur != NULL) {
80 VG_Delete(t->vcCur);
81 t->vcCur = NULL;
82 }
83 return (1);
84 default:
85 return (0);
86 }
87 }
88
89 static int
MouseMotion(void * p,VG_Vector vPos,VG_Vector vRel,int buttons)90 MouseMotion(void *p, VG_Vector vPos, VG_Vector vRel, int buttons)
91 {
92 VG_CircleTool *t = p;
93 VG_View *vv = VGTOOL(t)->vgv;
94 VG_Point *pEx;
95
96 if (t->vcCur != NULL) {
97 AdjustRadius(t->vcCur, vPos);
98 VG_Status(vv, _("Set radius: %.2f"), t->vcCur->r);
99 } else {
100 if ((pEx = VG_NearestPoint(vv, vPos, NULL))) {
101 VG_Status(vv, _("Use Point%u as center"),
102 (Uint)VGNODE(pEx)->handle);
103 } else {
104 VG_Status(vv, _("Circle center at %.2f,%.2f"),
105 vPos.x, vPos.y);
106 }
107 }
108 return (0);
109 }
110
111 static void
PostDraw(void * p,VG_View * vv)112 PostDraw(void *p, VG_View *vv)
113 {
114 VG_Tool *t = p;
115 int x, y;
116
117 VG_GetViewCoords(vv, t->vCursor, &x,&y);
118 AG_DrawCircle(vv, x,y, 3, VG_MapColorRGB(vv->vg->selectionColor));
119 }
120
121 VG_ToolOps vgCircleTool = {
122 N_("Circle"),
123 N_("Insert circle by centerpoint and radius."),
124 &vgIconCircle,
125 sizeof(VG_CircleTool),
126 0,
127 Init,
128 NULL, /* destroy */
129 NULL, /* edit */
130 NULL, /* predraw */
131 PostDraw,
132 NULL, /* selected */
133 NULL, /* deselected */
134 MouseMotion,
135 MouseButtonDown,
136 NULL, /* mousebuttonup */
137 NULL, /* keydown */
138 NULL /* keyup */
139 };
140