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122 lines
3.2 KiB
C++
122 lines
3.2 KiB
C++
// ==============================================================
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// This file is part of Glest Shared Library (www.glest.org)
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//
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// Copyright (C) 2001-2008 Martiño Figueroa
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//
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// You can redistribute this code and/or modify it under
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// the terms of the GNU General Public License as published
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// by the Free Software Foundation; either version 2 of the
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// License, or (at your option) any later version
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// ==============================================================
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#include "interpolation.h"
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#include <cassert>
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#include <algorithm>
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#include "model.h"
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#include "conversion.h"
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#include "util.h"
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#include <stdexcept>
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#include "platform_util.h"
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#include "leak_dumper.h"
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using namespace std;
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using namespace Shared::Util;
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namespace Shared{ namespace Graphics{
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// =====================================================
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// class InterpolationData
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// =====================================================
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bool InterpolationData::enableInterpolation = true;
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InterpolationData::InterpolationData(const Mesh *mesh) {
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if(GlobalStaticFlags::getIsNonGraphicalModeEnabled() == true) {
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throw megaglest_runtime_error("Loading graphics in headless server mode not allowed!");
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}
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vertices= NULL;
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normals= NULL;
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raw_frame_ofs = 0;
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this->mesh= mesh;
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}
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InterpolationData::~InterpolationData(){
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delete [] vertices;
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vertices=NULL;
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delete [] normals;
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normals=NULL;
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}
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void InterpolationData::update(float t, bool cycle){
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updateVertices(t, cycle);
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updateNormals(t, cycle);
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}
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void InterpolationData::updateVertices(float t, bool cycle) {
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update(mesh->getVertices(), vertices, t, cycle);
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}
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void InterpolationData::updateNormals(float t, bool cycle) {
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update(mesh->getNormals(), normals, t, cycle);
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}
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void InterpolationData::update(const Vec3f* src, Vec3f* &dest, float t, bool cycle) {
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if(t <0.0f || t>1.0f) {
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printf("ERROR t = [%f] for cycle [%d] f [%d] v [%d]\n",t,cycle,mesh->getFrameCount(),mesh->getVertexCount());
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}
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//assert(t>=0.0f && t<=1.0f);
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if(t < 0.0f || t > 1.0f) {
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throw megaglest_runtime_error("t < 0.0f || t > 1.0f t = [" + floatToStr(t,16) + "]");
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assert(t >= 0.f && t <= 1.f);
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}
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uint32 frameCount= mesh->getFrameCount();
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uint32 vertexCount= mesh->getVertexCount();
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if(frameCount > 1) {
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//misc vars
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uint32 prevFrame;
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uint32 nextFrame;
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float localT;
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if(cycle == true) {
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prevFrame= min<uint32>(static_cast<uint32>(t*frameCount), frameCount-1);
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nextFrame= (prevFrame+1) % frameCount;
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localT= t*frameCount - prevFrame;
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}
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else {
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prevFrame= min<uint32> (static_cast<uint32> (t * (frameCount-1)), frameCount - 2);
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nextFrame= min(prevFrame + 1, frameCount - 1);
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localT= t * (frameCount-1) - prevFrame;
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//printf(" prevFrame=%d nextFrame=%d localT=%f\n",prevFrame,nextFrame,localT);
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}
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uint32 prevFrameBase= prevFrame*vertexCount;
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uint32 nextFrameBase= nextFrame*vertexCount;
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//assertions
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assert(prevFrame<frameCount);
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assert(nextFrame<frameCount);
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if(enableInterpolation) {
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if(!dest) { // not previously allocated
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dest = new Vec3f[vertexCount];
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}
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for(uint32 j=0; j<vertexCount; ++j){
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dest[j]= src[prevFrameBase+j].lerp(localT, src[nextFrameBase+j]);
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}
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} else {
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raw_frame_ofs = prevFrameBase;
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}
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}
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}
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}}//end namespace
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