36 lines
1.5 KiB
C
36 lines
1.5 KiB
C
/* ===================================================
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* file: odrSpiral.c
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* ---------------------------------------------------
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* purpose: free sample for computing spirals
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* in OpenDRIVE applications
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* ---------------------------------------------------
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* first edit: 09.03.2010 by M. Dupuis @ VIRES GmbH
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* last mod.: 09.03.2010 by M. Dupuis @ VIRES GmbH
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* ===================================================
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Copyright 2010 VIRES Simulationstechnologie GmbH
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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/**
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* compute the actual "standard" spiral, starting with curvature 0
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* @param s run-length along spiral
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* @param cDot first derivative of curvature [1/m2]
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* @param x resulting x-coordinate in spirals local co-ordinate system [m]
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* @param y resulting y-coordinate in spirals local co-ordinate system [m]
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* @param t tangent direction at s [rad]
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*/
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extern void odrSpiral( double s, double cDot, double *x, double *y, double *t );
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