Cross Reference: /ast/src/lib/libtk/generic/tkTrig.c

Lines Matching refs:control
927  *	Given four control points, create a larger set of XPoints
933  *	control points.  Note:  no output point is generated for the
944 TkBezierScreenPoints(canvas, control, numSteps, xPointPtr)
947     double control[];			/* Array of coordinates for four
948 					 * control points:  x0, y0, x1, y1,
965 		(control[0]*u3 + 3.0 * (control[2]*t*u2 + control[4]*t2*u)
966 		    + control[6]*t3),
967 		(control[1]*u3 + 3.0 * (control[3]*t*u2 + control[5]*t2*u)
968 		    + control[7]*t3),
979  *	Given four control points, create a larger set of points
985  *	by the four control points.  Note:  no output point is
996 TkBezierPoints(control, numSteps, coordPtr)
997     double control[];			/* Array of coordinates for four
998 					 * control points:  x0, y0, x1, y1,
1014 	coordPtr[0] = control[0]*u3
1015 		+ 3.0 * (control[2]*t*u2 + control[4]*t2*u) + control[6]*t3;
1016 	coordPtr[1] = control[1]*u3
1017 		+ 3.0 * (control[3]*t*u2 + control[5]*t2*u) + control[7]*t3;
1066     double control[8];
1078 	control[0] = 0.5*pointPtr[numCoords-4] + 0.5*pointPtr[0];
1079 	control[1] = 0.5*pointPtr[numCoords-3] + 0.5*pointPtr[1];
1080 	control[2] = 0.167*pointPtr[numCoords-4] + 0.833*pointPtr[0];
1081 	control[3] = 0.167*pointPtr[numCoords-3] + 0.833*pointPtr[1];
1082 	control[4] = 0.833*pointPtr[0] + 0.167*pointPtr[2];
1083 	control[5] = 0.833*pointPtr[1] + 0.167*pointPtr[3];
1084 	control[6] = 0.5*pointPtr[0] + 0.5*pointPtr[2];
1085 	control[7] = 0.5*pointPtr[1] + 0.5*pointPtr[3];
1087 	    Tk_CanvasDrawableCoords(canvas, control[0], control[1],
1089 	    TkBezierScreenPoints(canvas, control, numSteps, xPoints+1);
1093 	    dblPoints[0] = control[0];
1094 	    dblPoints[1] = control[1];
1095 	    TkBezierPoints(control, numSteps, dblPoints+2);
1116 	 * Set up the first two control points.  This is done
1122 	    control[0] = pointPtr[0];
1123 	    control[1] = pointPtr[1];
1124 	    control[2] = 0.333*pointPtr[0] + 0.667*pointPtr[2];
1125 	    control[3] = 0.333*pointPtr[1] + 0.667*pointPtr[3];
1127 	    control[0] = 0.5*pointPtr[0] + 0.5*pointPtr[2];
1128 	    control[1] = 0.5*pointPtr[1] + 0.5*pointPtr[3];
1129 	    control[2] = 0.167*pointPtr[0] + 0.833*pointPtr[2];
1130 	    control[3] = 0.167*pointPtr[1] + 0.833*pointPtr[3];
1134 	 * Set up the last two control points.  This is done
1140 	    control[4] = .667*pointPtr[2] + .333*pointPtr[4];
1141 	    control[5] = .667*pointPtr[3] + .333*pointPtr[5];
1142 	    control[6] = pointPtr[4];
1143 	    control[7] = pointPtr[5];
1145 	    control[4] = .833*pointPtr[2] + .167*pointPtr[4];
1146 	    control[5] = .833*pointPtr[3] + .167*pointPtr[5];
1147 	    control[6] = 0.5*pointPtr[2] + 0.5*pointPtr[4];
1148 	    control[7] = 0.5*pointPtr[3] + 0.5*pointPtr[5];
1154 	 * straight-line segment by outputting the last control
1162 		Tk_CanvasDrawableCoords(canvas, control[6], control[7],
1167 		dblPoints[0] = control[6];
1168 		dblPoints[1] = control[7];
1176 	 * Generate a Bezier spline using the control points.
1181 	    TkBezierScreenPoints(canvas, control, numSteps, xPoints);
1185 	    TkBezierPoints(control, numSteps, dblPoints);
1224     double control[8];
1236 	control[0] = 0.5*pointPtr[numCoords-4] + 0.5*pointPtr[0];
1237 	control[1] = 0.5*pointPtr[numCoords-3] + 0.5*pointPtr[1];
1238 	control[2] = 0.167*pointPtr[numCoords-4] + 0.833*pointPtr[0];
1239 	control[3] = 0.167*pointPtr[numCoords-3] + 0.833*pointPtr[1];
1240 	control[4] = 0.833*pointPtr[0] + 0.167*pointPtr[2];
1241 	control[5] = 0.833*pointPtr[1] + 0.167*pointPtr[3];
1242 	control[6] = 0.5*pointPtr[0] + 0.5*pointPtr[2];
1243 	control[7] = 0.5*pointPtr[1] + 0.5*pointPtr[3];
1245 		control[0], Tk_CanvasPsY(canvas, control[1]),
1246 		control[2], Tk_CanvasPsY(canvas, control[3]),
1247 		control[4], Tk_CanvasPsY(canvas, control[5]),
1248 		control[6], Tk_CanvasPsY(canvas, control[7]));
1251 	control[6] = pointPtr[0];
1252 	control[7] = pointPtr[1];
1254 		control[6], Tk_CanvasPsY(canvas, control[7]));
1264 	control[2] = 0.333*control[6] + 0.667*pointPtr[0];
1265 	control[3] = 0.333*control[7] + 0.667*pointPtr[1];
1268 	 * Set up the last two control points.  This is done
1274 	    control[6] = pointPtr[2];
1275 	    control[7] = pointPtr[3];
1277 	    control[6] = 0.5*pointPtr[0] + 0.5*pointPtr[2];
1278 	    control[7] = 0.5*pointPtr[1] + 0.5*pointPtr[3];
1280 	control[4] = 0.333*control[6] + 0.667*pointPtr[0];
1281 	control[5] = 0.333*control[7] + 0.667*pointPtr[1];
1284 		control[2], Tk_CanvasPsY(canvas, control[3]),
1285 		control[4], Tk_CanvasPsY(canvas, control[5]),
1286 		control[6], Tk_CanvasPsY(canvas, control[7]));