1*4882a593Smuzhiyun /************************************************************ 2*4882a593Smuzhiyun 3*4882a593Smuzhiyun Copyright 1989, 1998 The Open Group 4*4882a593Smuzhiyun 5*4882a593Smuzhiyun Permission to use, copy, modify, distribute, and sell this software and its 6*4882a593Smuzhiyun documentation for any purpose is hereby granted without fee, provided that 7*4882a593Smuzhiyun the above copyright notice appear in all copies and that both that 8*4882a593Smuzhiyun copyright notice and this permission notice appear in supporting 9*4882a593Smuzhiyun documentation. 10*4882a593Smuzhiyun 11*4882a593Smuzhiyun The above copyright notice and this permission notice shall be included in 12*4882a593Smuzhiyun all copies or substantial portions of the Software. 13*4882a593Smuzhiyun 14*4882a593Smuzhiyun THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15*4882a593Smuzhiyun IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16*4882a593Smuzhiyun FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 17*4882a593Smuzhiyun OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN 18*4882a593Smuzhiyun AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 19*4882a593Smuzhiyun CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 20*4882a593Smuzhiyun 21*4882a593Smuzhiyun Except as contained in this notice, the name of The Open Group shall not be 22*4882a593Smuzhiyun used in advertising or otherwise to promote the sale, use or other dealings 23*4882a593Smuzhiyun in this Software without prior written authorization from The Open Group. 24*4882a593Smuzhiyun 25*4882a593Smuzhiyun ********************************************************/ 26*4882a593Smuzhiyun 27*4882a593Smuzhiyun typedef struct { 28*4882a593Smuzhiyun int x; 29*4882a593Smuzhiyun int y; 30*4882a593Smuzhiyun int mask; 31*4882a593Smuzhiyun } miZeroArcPtRec; 32*4882a593Smuzhiyun 33*4882a593Smuzhiyun typedef struct { 34*4882a593Smuzhiyun int x, y, k1, k3, a, b, d, dx, dy; 35*4882a593Smuzhiyun int alpha, beta; 36*4882a593Smuzhiyun int xorg, yorg; 37*4882a593Smuzhiyun int xorgo, yorgo; 38*4882a593Smuzhiyun int w, h; 39*4882a593Smuzhiyun int initialMask; 40*4882a593Smuzhiyun miZeroArcPtRec start, altstart, end, altend; 41*4882a593Smuzhiyun int firstx, firsty; 42*4882a593Smuzhiyun int startAngle, endAngle; 43*4882a593Smuzhiyun } miZeroArcRec; 44*4882a593Smuzhiyun 45*4882a593Smuzhiyun #define miCanZeroArc(arc) (((arc)->width == (arc)->height) || \ 46*4882a593Smuzhiyun (((arc)->width <= 800) && ((arc)->height <= 800))) 47*4882a593Smuzhiyun 48*4882a593Smuzhiyun #define MIARCSETUP() \ 49*4882a593Smuzhiyun x = info.x; \ 50*4882a593Smuzhiyun y = info.y; \ 51*4882a593Smuzhiyun k1 = info.k1; \ 52*4882a593Smuzhiyun k3 = info.k3; \ 53*4882a593Smuzhiyun a = info.a; \ 54*4882a593Smuzhiyun b = info.b; \ 55*4882a593Smuzhiyun d = info.d; \ 56*4882a593Smuzhiyun dx = info.dx; \ 57*4882a593Smuzhiyun dy = info.dy 58*4882a593Smuzhiyun 59*4882a593Smuzhiyun #define MIARCOCTANTSHIFT(clause) \ 60*4882a593Smuzhiyun if (a < 0) \ 61*4882a593Smuzhiyun { \ 62*4882a593Smuzhiyun if (y == info.h) \ 63*4882a593Smuzhiyun { \ 64*4882a593Smuzhiyun d = -1; \ 65*4882a593Smuzhiyun a = b = k1 = 0; \ 66*4882a593Smuzhiyun } \ 67*4882a593Smuzhiyun else \ 68*4882a593Smuzhiyun { \ 69*4882a593Smuzhiyun dx = (k1 << 1) - k3; \ 70*4882a593Smuzhiyun k1 = dx - k1; \ 71*4882a593Smuzhiyun k3 = -k3; \ 72*4882a593Smuzhiyun b = b + a - (k1 >> 1); \ 73*4882a593Smuzhiyun d = b + ((-a) >> 1) - d + (k3 >> 3); \ 74*4882a593Smuzhiyun if (dx < 0) \ 75*4882a593Smuzhiyun a = -((-dx) >> 1) - a; \ 76*4882a593Smuzhiyun else \ 77*4882a593Smuzhiyun a = (dx >> 1) - a; \ 78*4882a593Smuzhiyun dx = 0; \ 79*4882a593Smuzhiyun dy = 1; \ 80*4882a593Smuzhiyun clause \ 81*4882a593Smuzhiyun } \ 82*4882a593Smuzhiyun } 83*4882a593Smuzhiyun 84*4882a593Smuzhiyun #define MIARCSTEP(move1,move2) \ 85*4882a593Smuzhiyun b -= k1; \ 86*4882a593Smuzhiyun if (d < 0) \ 87*4882a593Smuzhiyun { \ 88*4882a593Smuzhiyun x += dx; \ 89*4882a593Smuzhiyun y += dy; \ 90*4882a593Smuzhiyun a += k1; \ 91*4882a593Smuzhiyun d += b; \ 92*4882a593Smuzhiyun move1 \ 93*4882a593Smuzhiyun } \ 94*4882a593Smuzhiyun else \ 95*4882a593Smuzhiyun { \ 96*4882a593Smuzhiyun x++; \ 97*4882a593Smuzhiyun y++; \ 98*4882a593Smuzhiyun a += k3; \ 99*4882a593Smuzhiyun d -= a; \ 100*4882a593Smuzhiyun move2 \ 101*4882a593Smuzhiyun } 102*4882a593Smuzhiyun 103*4882a593Smuzhiyun #define MIARCCIRCLESTEP(clause) \ 104*4882a593Smuzhiyun b -= k1; \ 105*4882a593Smuzhiyun x++; \ 106*4882a593Smuzhiyun if (d < 0) \ 107*4882a593Smuzhiyun { \ 108*4882a593Smuzhiyun a += k1; \ 109*4882a593Smuzhiyun d += b; \ 110*4882a593Smuzhiyun } \ 111*4882a593Smuzhiyun else \ 112*4882a593Smuzhiyun { \ 113*4882a593Smuzhiyun y++; \ 114*4882a593Smuzhiyun a += k3; \ 115*4882a593Smuzhiyun d -= a; \ 116*4882a593Smuzhiyun clause \ 117*4882a593Smuzhiyun } 118*4882a593Smuzhiyun 119*4882a593Smuzhiyun /* mizerarc.c */ 120*4882a593Smuzhiyun 121*4882a593Smuzhiyun extern _X_EXPORT Bool miZeroArcSetup(xArc * /*arc */ , 122*4882a593Smuzhiyun miZeroArcRec * /*info */ , 123*4882a593Smuzhiyun Bool /*ok360 */ 124*4882a593Smuzhiyun ); 125