#ifndef PtexFilterContext_h #define PtexFilterContext_h /* PTEX SOFTWARE Copyright 2009 Disney Enterprises, Inc. All rights reserved 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 copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. * The names "Disney", "Walt Disney Pictures", "Walt Disney Animation Studios" or the names of its contributors may NOT be used to endorse or promote products derived from this software without specific prior written permission from Walt Disney Pictures. Disclaimer: THIS SOFTWARE IS PROVIDED BY WALT DISNEY PICTURES AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, NONINFRINGEMENT AND TITLE ARE DISCLAIMED. IN NO EVENT SHALL WALT DISNEY PICTURES, THE COPYRIGHT HOLDER 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 BASED 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 DAMAGES. */ #include <string.h> #include "Ptexture.h" #include "PtexUtils.h" class PtexFilterContext : public Ptex { public: float* result; // result being evaluated int firstchan; // first channel to eval int nchannels; // number of channels to eval PtexTexture* tx; // texture being evaluated int ntxchannels; // number of channels in texture DataType dt; // data type of texture int faceid; // face being evaluated float u, v; // u,v being evaluated float uw, vw; // filter width bool prepare(float* result_val, int firstchan_val, int nchannels_val, PtexTexture* tx_val, int faceid_val, float u_val, float v_val, float uw_val, float vw_val) { memset(result_val, 0, sizeof(float)*nchannels_val); // get tx info tx = tx_val; if (!tx) return 0; ntxchannels = tx->numChannels(); dt = tx->dataType(); // record context result = result_val; firstchan = firstchan_val; nchannels = PtexUtils::min(nchannels_val, ntxchannels-firstchan_val); faceid = faceid_val; u = PtexUtils::clamp(u_val, 0.0f, 1.0f); v = PtexUtils::clamp(v_val, 0.0f, 1.0f); uw = uw_val; vw = vw_val; // validate params if ((nchannels <= 0) || (faceid < 0 || faceid >= tx->numFaces())) return 0; return 1; } }; #endif