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/***************************************************************************
TexAnimation.cpp - description
-------------------
begin : Wed Jan 26 2000
copyright : (C) 2000 by Henrik Enqvist
email : henqvist@excite.com
***************************************************************************/
#include "Private.h"
#include "TexAnimation.h"
#include "Group.h"
#include "math.h"
#include "Light.h"
#include "BillBoard.h"
TexAnimation::TexAnimation(int step, int nvtx) : Behavior() {
EmAssert(nvtx > 0, "TexAnimation::TexAnimation nvtx less than 1");
m_iStep = step;
m_iTick = 0;
m_iTexCoord = nvtx;
}
TexAnimation::~TexAnimation() {
}
void TexAnimation::add(float u, float v) {
TexCoord tex;
tex.u = u;
tex.v = v;
m_vTexCoord.push_back(tex);
}
void TexAnimation::onTick() {
EmAssert(this->getParent() != NULL, "Parent not allowed to be null");
float sU, sV, eU, eV, u, v;
int size = (int)(m_vTexCoord.size()/m_iTexCoord);
if (m_iTick >= size*m_iStep) {
m_iTick = 0;
}
int index = (int)(m_iTick/m_iStep);
// TODO this mtherfcker will crash !!!
for (int a=0; a<m_iTexCoord && a<4; a++) {
sU = m_vTexCoord[index*m_iTexCoord + a].u;
sV = m_vTexCoord[index*m_iTexCoord + a].v;
if (index + 1 < size) {
eU = m_vTexCoord[(index+1)*m_iTexCoord + a].u;
eV = m_vTexCoord[(index+1)*m_iTexCoord + a].v;
} else {
eU = m_vTexCoord[a].u;
eV = m_vTexCoord[a].v;
}
/*
k = ((float)(m_iTick%(m_iStep*m_iTexCoord))/m_iStep);
u = (float)(sU + (eU - sU)*k);
v = (float)(sV + (eV - sV)*k);
*/
u = sU;
v = sV;
BillBoard * b = this->getParent()->getBillBoard();
if (b != NULL) {
b->setUV(u, v, a);
EM_COUT("TexAnimation::onTick() " << u <<" "<< v <<" size "<< size <<" index "<<
index <<" tick "<< m_iTick, 0);
}
}
m_iTick++;
}
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