/* WARNING: This file was generated by dkct. Changes you make here will be lost if dkct is run again! You should modify the original source and run dkct on it. Original source: dk3bezcu.ctr */ /* Copyright (C) 2012-2017, Dirk Krause Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. * Redistributions in binary form must reproduce the above opyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. * Neither the name of the author nor the names of contributors may be used to endorse or promote products derived from this software without specific prior written permission. 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 COPYRIGHT OWNER 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. */ /** @file dk3bezcu.c The dk3bezcu module. */ #line 62 "dk3bezcu.ctr" #include "dk3all.h" #include "dk3bb.h" #include "dk3bezcu.h" #line 70 "dk3bezcu.ctr" double dk3bezier_value( double x0, double xp, double xm, double x1, double t, int *ec ) { int mec = 0; double back; #line 81 "dk3bezcu.ctr" back = dk3ma_d_add_ok( x0, dk3ma_d_mul_ok( t, dk3ma_d_add_ok( dk3ma_d_sub_ok( dk3ma_d_mul_ok(3.0, xp, &mec), dk3ma_d_mul_ok(3.0, x0, &mec), &mec ), dk3ma_d_mul_ok( t, dk3ma_d_add_ok( dk3ma_d_add_ok( dk3ma_d_sub_ok( dk3ma_d_mul_ok(3.0, xm, &mec), dk3ma_d_mul_ok(6.0, xp, &mec), &mec ), dk3ma_d_mul_ok(3.0, x0, &mec), &mec ), dk3ma_d_mul_ok( t, dk3ma_d_add_ok( dk3ma_d_sub_ok( dk3ma_d_mul_ok(3.0, xp, &mec), dk3ma_d_mul_ok(3.0, xm, &mec), &mec ), dk3ma_d_sub_ok(x1, x0, &mec), &mec ), &mec ), &mec ), &mec ), &mec ), &mec ), &mec ); #line 126 "dk3bezcu.ctr" if(mec) { if(ec) { *ec = mec; } } #line 130 "dk3bezcu.ctr" return back; } /** Apply one t value to a bounding box. @param bb Bounding box to modify. @param x0 Start value. @param xp Control value for start. @param xm Control value for end. @param x1 End value. @param ra Point radius (half line width). @param tv The t value. @param isy Flag: Y direction. @param ec Pointer to error code variable, may be NULL. @return 1 on success, 0 on error. */ static int dk3bezier_t_dimension( dk3_bb_t *bb, double x0, double xp, double xm, double x1, double ra, double tv, int isy, int *ec ) { double val; int back = 1; int mec = 0; #line 165 "dk3bezcu.ctr" if(tv > 0.0) { if(tv < 1.0) { val = dk3bezier_value(x0, xp, xm, x1, tv, &mec); #line 168 "dk3bezcu.ctr" if(isy) { if(!dk3bb_add_y_width(bb, val, ra)) { back = 0; } } else { if(!dk3bb_add_x_width(bb, val, ra)) { back = 0; } } } } if(mec) { #line 176 "dk3bezcu.ctr" back = 0; if(ec) { *ec = mec; } } #line 179 "dk3bezcu.ctr" return back; } #if VERSION_BEFORE_20121218 /** Apply one dimension to a bounding box. @param bb Bounding box to modify. @param x0 Start value. @param xp Control value for start. @param xm Control value for end. @param x1 End value. @param ra Point radius (half line width). @param isy Flag: Y direction. @param ec Pointer to error code variable, may be NULL. @return 1 on success, 0 on error. */ static int dk3bezier_bb_dimension( dk3_bb_t *bb, double x0, double xp, double xm, double x1, double ra, int isy, int *ec ) { double n; double z1; double z2; double t; int back = 1; int mec = 0; #line 216 "dk3bezcu.ctr" n = dk3ma_d_add_ok( dk3ma_d_sub_ok(x1, x0, &mec), dk3ma_d_mul_ok(3.0, dk3ma_d_sub_ok(xp, xm, &mec), &mec), &mec ); #line 221 "dk3bezcu.ctr" z1 = dk3ma_d_sub_ok( dk3ma_d_sub_ok(dk3ma_d_mul_ok(2.0, xp, &mec), xm, &mec), x0, &mec ); #line 226 "dk3bezcu.ctr" z2 = dk3ma_d_add_ok( dk3ma_d_sub_ok( xm, dk3ma_d_mul_ok(2.0, xp, &mec), &mec ), x0, &mec ); #line 235 "dk3bezcu.ctr" z2 = dk3ma_d_mul_ok(z2, z2, &mec); z2 = dk3ma_d_sub_ok( z2, dk3ma_d_mul_ok( dk3ma_d_sub_ok(xp, x0, &mec), n, &mec ), &mec ); #line 245 "dk3bezcu.ctr" if(z2 >= 0.0) { z2 = sqrt(z2); #line 247 "dk3bezcu.ctr" t = dk3ma_d_div_ok( dk3ma_d_add_ok(z1, z2, &mec), n, &mec ); #line 252 "dk3bezcu.ctr" if(!dk3bezier_t_dimension(bb, x0, xp, xm, x1, ra, t, isy, &mec)) { back = 0; } #line 255 "dk3bezcu.ctr" t = dk3ma_d_div_ok( dk3ma_d_sub_ok(z1, z2, &mec), n, &mec ); #line 260 "dk3bezcu.ctr" if(!dk3bezier_t_dimension(bb, x0, xp, xm, x1, ra, t, isy, &mec)) { back = 0; } #line 263 "dk3bezcu.ctr" } if(mec) { #line 265 "dk3bezcu.ctr" back = 0; if(ec) { *ec = mec; } } #line 268 "dk3bezcu.ctr" return back; } #else /** Apply one dimension to a bounding box. @param bb Bounding box to modify. @param x0 Start value. @param xp Control value for start. @param xm Control value for end. @param x1 End value. @param ra Point radius (half line width). @param isy Flag: Y direction. @param ec Pointer to error code variable, may be NULL. @return 1 on success, 0 on error. */ static int dk3bezier_bb_dimension( dk3_bb_t *bb, double x0, double xp, double xm, double x1, double ra, int isy, int *ec ) { double n; double z1; double z2; double t; int back = 1; int mec = 0; int testmec; #line 303 "dk3bezcu.ctr" n = dk3ma_d_add_ok( dk3ma_d_sub_ok(x1, x0, &mec), dk3ma_d_mul_ok(3.0, dk3ma_d_sub_ok(xp, xm, &mec), &mec), &mec ); #line 308 "dk3bezcu.ctr" z1 = dk3ma_d_sub_ok( dk3ma_d_sub_ok(dk3ma_d_mul_ok(2.0, xp, &mec), xm, &mec), x0, &mec ); #line 313 "dk3bezcu.ctr" z2 = dk3ma_d_add_ok( dk3ma_d_sub_ok( xm, dk3ma_d_mul_ok(2.0, xp, &mec), &mec ), x0, &mec ); #line 322 "dk3bezcu.ctr" z2 = dk3ma_d_mul_ok(z2, z2, &mec); z2 = dk3ma_d_sub_ok( z2, dk3ma_d_mul_ok( dk3ma_d_sub_ok(xp, x0, &mec), n, &mec ), &mec ); #line 332 "dk3bezcu.ctr" if(z2 >= 0.0) { z2 = sqrt(z2); #line 334 "dk3bezcu.ctr" testmec = 0; t = dk3ma_d_div_ok( dk3ma_d_add_ok(z1, z2, &mec), n, &testmec ); #line 340 "dk3bezcu.ctr" if(0 == testmec) { if(!dk3bezier_t_dimension(bb, x0, xp, xm, x1, ra, t, isy, &mec)) { back = 0; } #line 344 "dk3bezcu.ctr" } testmec = 0; t = dk3ma_d_div_ok( dk3ma_d_sub_ok(z1, z2, &mec), n, &testmec ); #line 351 "dk3bezcu.ctr" if(0 == testmec) { if(!dk3bezier_t_dimension(bb, x0, xp, xm, x1, ra, t, isy, &mec)) { back = 0; } #line 355 "dk3bezcu.ctr" } } if(mec) { #line 358 "dk3bezcu.ctr" back = 0; if(ec) { *ec = mec; } } #line 361 "dk3bezcu.ctr" return back; } #endif int dk3bezier_bb( dk3_bb_t *bb, double x0, double y0, double xp, double yp, double xm, double ym, double x1, double y1, double ra, int *ec ) { int back = 0; int mec = 0; #line 384 "dk3bezcu.ctr" if(bb) { back = 1; if(!dk3bb_point_width(bb, x0, y0, ra)) { back = 0; } if(!dk3bb_point_width(bb, x1, y1, ra)) { back = 0; } if(!dk3bezier_bb_dimension(bb, x0, xp, xm, x1, ra, 0, &mec)) { back = 0; } if(!dk3bezier_bb_dimension(bb, y0, yp, ym, y1, ra, 1, &mec)) { back = 0; } if(mec) { back = 0; if(ec) { *ec = mec; } } } else { if(ec) { *ec = DK3_ERROR_INVALID_ARGS; } } #line 405 "dk3bezcu.ctr" return back; }