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Rev 42521 Rev 45017
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#include "graphapp.h"
 25 
#include "graphapp.h"
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27 
point newpoint(int x, int y)
 27 
point newpoint(int x, int y)
28 
{
 28 
{
29 
	point p;
 29 
    point p;
30 
 
 30 
 
31 
	p.x = x;
 31 
    p.x = x;
32 
	p.y = y;
 32 
    p.y = y;
33 
	return p;
 33 
    return p;
34 
}
 34 
}
35 
 
 35 
 
36 
rect newrect(int x, int y, int width, int height)
 36 
rect newrect(int x, int y, int width, int height)
37 
{
 37 
{
38 
	rect r;
 38 
    rect r;
39 
 
 39 
 
40 
	r.x = x;
 40 
    r.x = x;
41 
	r.y = y;
 41 
    r.y = y;
42 
	r.width = width;
 42 
    r.width = width;
43 
	r.height = height;
 43 
    r.height = height;
44 
	return r;
 44 
    return r;
45 
}
 45 
}
46 
 
 46 
 
47 
rect rpt(point min, point max)
 47 
rect rpt(point min, point max)
48 
{
 48 
{
49 
	rect r;
 49 
    rect r;
50 
 
 50 
 
51 
	r.x = min.x;
 51 
    r.x = min.x;
52 
	r.y  = min.y;
 52 
    r.y  = min.y;
53 
	r.width = max.x - min.x;
 53 
    r.width = max.x - min.x;
54 
	r.height = max.y - min.y;
 54 
    r.height = max.y - min.y;
55 
	return r;
 55 
    return r;
56 
}
 56 
}
57 
 
 57 
 
58 
point topleft(rect r)
 58 
point topleft(rect r)
59 
{
 59 
{
60 
	point p;
 60 
    point p;
61 
 
 61 
 
62 
	p.x = r.x;
 62 
    p.x = r.x;
63 
	p.y = r.y;
 63 
    p.y = r.y;
64 
 
 64 
 
65 
	return p;
 65 
    return p;
66 
}
 66 
}
67 
 
 67 
 
68 
point topright(rect r)
 68 
point topright(rect r)
69 
{
 69 
{
70 
	point p;
 70 
    point p;
71 
 
 71 
 
72 
	p.x = r.x + r.width - 1;
 72 
    p.x = r.x + r.width - 1;
73 
	p.y = r.y;
 73 
    p.y = r.y;
74 
 
 74 
 
75 
	return p;
 75 
    return p;
76 
}
 76 
}
77 
 
 77 
 
78 
point bottomright(rect r)
 78 
point bottomright(rect r)
79 
{
 79 
{
80 
	point p;
 80 
    point p;
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 81 
 
82 
	p.x = r.x + r.width - 1;
 82 
    p.x = r.x + r.width - 1;
83 
	p.y = r.y + r.height - 1;
 83 
    p.y = r.y + r.height - 1;
84 
 
 84 
 
85 
	return p;
 85 
    return p;
86 
}
 86 
}
87 
 
 87 
 
88 
point bottomleft(rect r)
 88 
point bottomleft(rect r)
89 
{
 89 
{
90 
	point p;
 90 
	point p;
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95 
	return p;
 95 
	return p;
96 
}
 96 
}
97 
 
 97 
 
98 
point addpt(point p1, point p2)
 98 
point addpt(point p1, point p2)
99 
{
 99 
{
100 
	p1.x += p2.x;
 100 
    p1.x += p2.x;
101 
	p1.y += p2.y;
 101 
    p1.y += p2.y;
102 
	return p1;
 102 
    return p1;
103 
}
 103 
}
104 
 
 104 
 
105 
point subpt(point p1, point p2)
 105 
point subpt(point p1, point p2)
106 
{
 106 
{
107 
	p1.x -= p2.x;
 107 
    p1.x -= p2.x;
108 
	p1.y -= p2.y;
 108 
    p1.y -= p2.y;
109 
	return p1;
 109 
    return p1;
110 
}
 110 
}
111 
 
 111 
 
112 
point midpt(point p1, point p2)
 112 
point midpt(point p1, point p2)
113 
{
 113 
{
114 
	point p;
 114 
    point p;
115 
 
 115 
 
116 
	p.x = (p1.x + p2.x)/2;
 116 
    p.x = (p1.x + p2.x)/2;
117 
	p.y = (p1.y + p2.y)/2;
 117 
    p.y = (p1.y + p2.y)/2;
118 
	return p;
 118 
    return p;
119 
}
 119 
}
120 
 
 120 
 
121 
point mulpt(point p, int i)
 121 
point mulpt(point p, int i)
122 
{
 122 
{
123 
	p.x *= i;
 123 
    p.x *= i;
124 
	p.y *= i;
 124 
    p.y *= i;
125 
	return p;
 125 
    return p;
126 
}
 126 
}
127 
 
 127 
 
128 
point divpt(point p, int i)
 128 
point divpt(point p, int i)
129 
{
 129 
{
130 
	p.x /= i;
 130 
    p.x /= i;
131 
	p.y /= i;
 131 
    p.y /= i;
132 
	return p;
 132 
    return p;
133 
}
 133 
}
134 
 
 134 
 
135 
rect rmove(rect r, point p)
 135 
rect rmove(rect r, point p)
136 
{
 136 
{
137 
	r.x = p.x;
 137 
    r.x = p.x;
138 
	r.y  = p.y;
 138 
    r.y  = p.y;
139 
	return r;
 139 
    return r;
140 
}
 140 
}
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142 
rect raddpt(rect r, point p)
 142 
rect raddpt(rect r, point p)
143 
{
 143 
{
144 
	r.x += p.x;
 144 
    r.x += p.x;
145 
	r.y += p.y;
 145 
    r.y += p.y;
146 
	return r;
 146 
    return r;
147 
}
 147 
}
148 
 
 148 
 
149 
rect rsubpt(rect r, point p)
 149 
rect rsubpt(rect r, point p)
150 
{
 150 
{
151 
	r.x -= p.x;
 151 
    r.x -= p.x;
152 
	r.y  -= p.y;
 152 
    r.y  -= p.y;
153 
	return r;
 153 
    return r;
154 
}
 154 
}
155 
 
 155 
 
156 
rect rmul(rect r, int i)
 156 
rect rmul(rect r, int i)
157 
{
 157 
{
158 
	if (i != 1) {
 158 
    if (i != 1) {
159 
		r.x *= i;
 159 
	r.x *= i;
160 
		r.y  *= i;
 160 
	r.y  *= i;
161 
		r.width *= i;
 161 
	r.width *= i;
162 
		r.height *= i;
 162 
	r.height *= i;
163 
	}
 163 
    }
164 
	return r;
 164 
    return r;
165 
}
 165 
}
166 
 
 166 
 
167 
rect rdiv(rect r, int i)
 167 
rect rdiv(rect r, int i)
168 
{
 168 
{
169 
	if (i != 1) {
 169 
    if (i != 1) {
170 
		r.x /= i;
 170 
	r.x /= i;
171 
		r.y  /= i;
 171 
	r.y  /= i;
172 
		r.width /= i;
 172 
	r.width /= i;
173 
		r.height /= i;
 173 
	r.height /= i;
174 
	}
 174 
    }
175 
	return r;
 175 
    return r;
176 
}
 176 
}
177 
 
 177 
 
178 
rect growr(rect r, int w, int h)
 178 
rect growr(rect r, int w, int h)
179 
{
 179 
{
180 
	r.x -= w;
 180 
    r.x -= w;
181 
	r.y  -= h;
 181 
    r.y  -= h;
182 
	r.width += 2*w;
 182 
    r.width += 2*w;
183 
	r.height += 2*h;
 183 
    r.height += 2*h;
184 
	return r;
 184 
    return r;
185 
}
 185 
}
186 
 
 186 
 
187 
rect insetr(rect r, int i)
 187 
rect insetr(rect r, int i)
188 
{
 188 
{
189 
	r.x += i;
 189 
    r.x += i;
190 
	r.y  += i;
 190 
    r.y  += i;
191 
	r.width -= 2*i;
 191 
    r.width -= 2*i;
192 
	r.height -= 2*i;
 192 
    r.height -= 2*i;
193 
	return r;
 193 
    return r;
194 
}
 194 
}
195 
 
 195 
 
196 
rect rcenter(rect r1, rect r2) /* center r1 on r2 */
 196 
rect rcenter(rect r1, rect r2) /* center r1 on r2 */
197 
{
 197 
{
198 
	rect r;
 198 
    rect r;
199 
 
 199 
 
200 
	r.x = r2.x + (r2.width-r1.width)/2;
 200 
    r.x = r2.x + (r2.width-r1.width)/2;
201 
	r.y  = r2.y + (r2.height-r1.height)/2;
 201 
    r.y  = r2.y + (r2.height-r1.height)/2;
202 
	r.width = r1.width;
 202 
    r.width = r1.width;
203 
	r.height = r1.height;
 203 
    r.height = r1.height;
204 
 
 204 
 
205 
	return r;
 205 
    return r;
206 
}
 206 
}
207 
 
 207 
 
208 
int ptinr(point p, rect r)
 208 
int ptinr(point p, rect r)
209 
{
 209 
{
210 
	if ((p.x>=r.x) && (p.x<r.x+r.width) &&
 210 
    if ((p.x>=r.x) && (p.x<r.x+r.width) &&
211 
			(p.y>=r.y) && (p.y<r.y+r.height))
 211 
	(p.y>=r.y) && (p.y<r.y+r.height))
212 
		return 1;
 212 
	return 1;
213 
	else
 213 
    else
214 
		return 0;
 214 
	return 0;
215 
}
 215 
}
216 
 
 216 
 
217 
int rinr(rect r1, rect r2)
 217 
int rinr(rect r1, rect r2)
218 
{
 218 
{
219 
	if ((r1.x>=r2.x) && (r1.y>=r2.y) &&
 219 
    if ((r1.x>=r2.x) && (r1.y>=r2.y) &&
220 
		(r1.x+r1.width<=r2.x+r2.width) &&
 220 
	(r1.x+r1.width<=r2.x+r2.width) &&
221 
		(r1.y+r1.height<=r2.y+r2.height))
 221 
	(r1.y+r1.height<=r2.y+r2.height))
222 
		return 1;
 222 
	return 1;
223 
	else
 223 
    else
224 
		return 0;
 224 
	return 0;
225 
}
 225 
}
226 
 
 226 
 
227 
int rxr(rect r1, rect r2)
 227 
int rxr(rect r1, rect r2)
228 
{
 228 
{
229 
	if ((r1.x<r2.x+r2.width) &&
 229 
    if ((r1.x<r2.x+r2.width) &&
230 
		(r2.x<r1.x+r1.width) &&
 230 
	(r2.x<r1.x+r1.width) &&
231 
		(r1.y<r2.y+r2.height) &&
 231 
	(r1.y<r2.y+r2.height) &&
232 
		(r2.y<r1.y+r1.height))
 232 
	(r2.y<r1.y+r1.height))
233 
		return 1;
 233 
	return 1;
234 
	else
 234 
    else
235 
		return 0;
 235 
	return 0;
236 
}
 236 
}
237 
 
 237 
 
238 
int equalpt(point p1, point p2)
 238 
int equalpt(point p1, point p2)
239 
{
 239 
{
240 
	if ((p1.x==p2.x) && (p1.y==p2.y))
 240 
    if ((p1.x==p2.x) && (p1.y==p2.y))
241 
		return 1;
 241 
	return 1;
242 
	else
 242 
    else
243 
		return 0;
 243 
	return 0;
244 
}
 244 
}
245 
 
 245 
 
246 
int equalr(rect r1, rect r2)
 246 
int equalr(rect r1, rect r2)
247 
{
 247 
{
248 
	if ((r1.x==r2.x) && (r1.width==r2.width) &&
 248 
    if ((r1.x==r2.x) && (r1.width==r2.width) &&
249 
		(r1.y==r2.y) && (r1.height==r2.height))
 249 
	(r1.y==r2.y) && (r1.height==r2.height))
250 
		return 1;
 250 
	return 1;
251 
	else
 251 
    else
252 
		return 0;
 252 
	return 0;
253 
}
 253 
}
254 
 
 254 
 
255 
rect clipr(rect r1, rect r2)
 255 
rect clipr(rect r1, rect r2)
256 
{
 256 
{
257 
	if (rxr(r1,r2) == 0)
 257 
    if (rxr(r1,r2) == 0)
258 
		return rect(0,0,0,0); /* they don't overlap */
 258 
	return rect(0,0,0,0); /* they don't overlap */
259 
 
 259 
 
260 
	if (r1.x < r2.x) {
 260 
    if (r1.x < r2.x) {
261 
		r1.width -= (r2.x - r1.x);
 261 
	r1.width -= (r2.x - r1.x);
262 
		r1.x = r2.x;
 262 
	r1.x = r2.x;
263 
	}
 263 
    }
264 
	if (r1.y < r2.y) {
 264 
    if (r1.y < r2.y) {
265 
		r1.height -= (r2.y - r1.y);
 265 
	r1.height -= (r2.y - r1.y);
266 
		r1.y = r2.y;
 266 
	r1.y = r2.y;
267 
	}
 267 
    }
268 
	if (r1.x + r1.width > r2.x + r2.width)
 268 
    if (r1.x + r1.width > r2.x + r2.width)
269 
		r1.width = r2.x + r2.width - r1.x;
 269 
	r1.width = r2.x + r2.width - r1.x;
270 
	if (r1.y + r1.height > r2.y + r2.height)
 270 
    if (r1.y + r1.height > r2.y + r2.height)
271 
		r1.height = r2.y + r2.height - r1.y;
 271 
	r1.height = r2.y + r2.height - r1.y;
272 
	return r1; /* they do overlap */
 272 
    return r1; /* they do overlap */
273 
}
 273 
}
274 
 
 274 
 
275 
rect rcanon(rect r)
 275 
rect rcanon(rect r)
276 
{
 276 
{
277 
	if (r.width < 0) {
 277 
    if (r.width < 0) {
278 
		r.x += r.width;
 278 
	r.x += r.width;
279 
		r.width = -r.width;
 279 
	r.width = -r.width;
280 
	}
 280 
    }
281 
	if (r.height < 0) {
 281 
    if (r.height < 0) {
282 
		r.y += r.height;
 282 
	r.y += r.height;
283 
		r.height = -r.height;
 283 
	r.height = -r.height;
284 
	}
 284 
    }
285 
	return r;
 285 
    return r;
286 
}
 286 
}