int RemoveHighestPriority(Heap *interval_heap) {
int value_removed;
if(IntervalHeapIsEmpty(*interval_heap)) {
printf("Fila vazia!\n");
return -1;
} else if ((*interval_heap).node[0].min == -1) {
value_removed = RemoveMaximum(&(*interval_heap), 0);
} else if ((*interval_heap).node[0].max == -1) {
value_removed = RemoveMinimum(&(*interval_heap), 0);
} else {
int final_node_position = (*interval_heap).size - 1;
// Remove o valor mínimo da raiz.
value_removed = RemoveMaximum(&(*interval_heap), 0);
// Reinsere o valor do último nó na raiz.
if((*interval_heap).node[final_node_position].max == -1) {
SwapValues(&(*interval_heap).node[final_node_position].min,
&(*interval_heap).node[0].max);
} else {
SwapValues(&(*interval_heap).node[final_node_position].max,
&(*interval_heap).node[0].max);
}
DownwardsMax(&(*interval_heap), 0);
}
(*interval_heap).number_of_elements -= 1;
if((*interval_heap).number_of_elements % 2 == 0) {
(*interval_heap).size -= 1;
}
return value_removed;
}
/*
========================
idJointBuffer::Swap
========================
*/
void idJointBuffer::Swap( idJointBuffer & other ) {
// Make sure the ownership of the buffer is not transferred to an unintended place.
assert( other.OwnsBuffer() == OwnsBuffer() );
SwapValues( other.numJoints, numJoints );
SwapValues( other.offsetInOtherBuffer, offsetInOtherBuffer );
SwapValues( other.apiObject, apiObject );
}
char BoundingBox::intersect(const Ray &ray, float *hitt0, float *hitt1) const
{
float t0 = ray.m_tmin, t1 = ray.m_tmax;
for (int i = 0; i < 3; ++i) {
const float diri = ray.m_dir.comp(i);
const Vector3F o = ray.m_origin;
if(IsValueNearZero(diri)) {
if(i == 0) {
if(o.x < m_data[0] || o.x > m_data[3]) return 0;
}
else if(i == 1) {
if(o.y < m_data[1] || o.y > m_data[4]) return 0;
}
else {
if(o.z < m_data[2] || o.z > m_data[5]) return 0;
}
continue;
}
// Update interval for _i_th bounding box slab
float invRayDir = 1.f / ray.m_dir.comp(i);
float tNear = (getMin(i) - ray.m_origin.comp(i)) * invRayDir;
float tFar = (getMax(i) - ray.m_origin.comp(i)) * invRayDir;
// Update parametric interval from slab intersection $t$s
if (tNear > tFar) SwapValues(tNear, tFar);
t0 = tNear > t0 ? tNear : t0;
t1 = tFar < t1 ? tFar : t1;
if (t0 > t1) return 0;
}
if (hitt0) *hitt0 = t0;
if (hitt1) *hitt1 = t1;
return 1;
}
// Tendo o pai como referência, o mesmo é comparado com seus filhos e trocado
// caso a sua prioridade seja maior que a de um deles.
void DownwardsMin(Heap *intervals, int position) {
//Assume que o filho de menor valor é o da esquerda.
int lowest_son_position = 2*position+1;
bool stop = false;
// Enquanto o vetor ainda estiver sendo percorrido e o pai
// não ser menor que ambos seus filhos...
while((!stop) && (lowest_son_position < (*intervals).size)) {
// Caso os filhos da direita e esquerda existirem e o valor atual do
// filho de menor valor for maior que o do irmão, significa que a
// posição do filho de menor valor é a posição do irmão.
int father_value = (*intervals).node[position].min;
if(BrotherHasLowerValue((*intervals), lowest_son_position)){
lowest_son_position += 1;
// Garante que o valor a ser utilizado é o correto.
AssignValues(&(*intervals).node[lowest_son_position]);
}
// Caso o pai possua prioridade maior que a do filho de menor prioridade,
// troca os valores de ambos entre si. A verificação é feita para ambos
// os extremos do intervalo.
if((father_value > (*intervals).node[lowest_son_position].min)
&& IsNotEmpty((*intervals).node[lowest_son_position].min)) {
SwapValues(&(*intervals).node[position].min,
&(*intervals).node[lowest_son_position].min);
} else if ((father_value > (*intervals).node[lowest_son_position].max)
&& IsNotEmpty((*intervals).node[lowest_son_position].max)) {
SwapValues(&(*intervals).node[position].min,
&(*intervals).node[lowest_son_position].max);
//Caso o pai esteja na posição correta, interrompe o loop.
} else {
stop = true;
}
position = lowest_son_position;
lowest_son_position = (2 * lowest_son_position) + 1;
//Ajusta os valores máximo e mínimo, caso necessário.
AssignValues(&(*intervals).node[position]);
}
AssignValues(&(*intervals).node[position]);
}
// Troca os valores máximo e mínimo caso não estejam no campo correto.
bool AssignValues(Interval *node) {
if((((*node).max > -1) && ((*node).max < (*node).min))
|| (((*node).min > -1) && ((*node).min > (*node).max))) {
SwapValues(&(*node).max, &(*node).min);
return true;
}
return false;
}
void main()
{
int a,b;
int *a_ptr, *b_ptr;
scanf("%d,%d",&a,&b);
a_ptr = &a;
b_ptr = &b;
SwapValues(&a, &b);//等同於SwapValues(a_ptr, b_ptr);
printf("a=%d,b=%d\n" , a,b);// 等同於printf("a=%d,b=%d",*a_ptr, *b_ptr);
}
int InsertionSort(int the_array[], unsigned int size)//Apply the insertion sort algorithm to sort an array of integers.
{
int passes = 0;
for (int i = 0; i <= (size - 1); i++)
{
passes++;
int j = i;
while (j > 0 && the_array[j] < the_array[j - 1])
{
SwapValues(the_array[j], the_array[j - 1]);
j = j - 1;
}
}
return passes;
}
int BubbleSort(int the_array[], unsigned int size)//Apply the bubble sort algorithm to sort an array of integers.
{
int passes = 0;
for (int i = size - 1; i > 0; i--)
{
passes++;
for (int j = 0; j < i; j++)
{
if (the_array[j] > the_array[j + 1])
{
SwapValues(the_array[j], the_array[j + 1]);
}
}
}
return passes;
}
// ÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑ
// ¥ EvaluateInt
// ÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑ
TTBInteger CRandomFunction::EvaluateInt(
CProgram &ioState)
{
SInt32 t;
TTBInteger lower=mLower(ioState),higher=mHigher(ioState),temp;
if (lower>higher)
SwapValues(lower,higher,temp);
// this implementation is assuming a 32 bit random number generator
// if it's a 16 bit one, then passing a min max with a span > 16 bits will not yield a full spread
COMPILE_TIME_ASSERT(RAND_MAX==0x7fffffff);
UInt32 diff=higher-lower+1;
TTBInteger rand;
rand=std::rand()%diff+lower;
return rand;
}
int main()
{
//~ Function 1
int a = 1;
int b = 2;
printf("int a equals %d\n", a);
printf("int b equals %d\n", b);
SwapValues(&a, &b);
printf("Values swapped\n");
printf("int a now equals %d\n", a);
printf("int b now equals %d\n", b);
int arr[5] = {1, 2, 3, 4, 5};
int len = 5;
//~ Function 2
printf("New temp variable the sum is: %d\n", GetSumReturn(arr, len));
//~ Function 3
int sum = 0;
printf("The sum value is now: %d\n", sum);
GetSumParameter(arr, len, &sum);
printf("Sum value changed\n");
printf("The sum value is now: %d\n", sum);
//~ Function 4
int arr2[5] = {1, 2, 3, 4, 5};
int result[5];
int i = 0;
for(; i != len; i++)
{
printf("%d\n", result[i]);
}
ArrayAdd(arr, arr2, len, result);
i = 0;
for(; i != len; i++)
{
printf("%d\n", result[i]);
}
return 0;
}
int SelectionSort(int the_array[], unsigned int size)//Apply the selection sort algorithm to sort an array of integers.
{
int smallest = 0;
int passes = 0;
for (int i = 0; i < size; i++)
{
passes++;
smallest = i;
for (int j = (i + 1); j < size; j++)
{
if (the_array[j] < the_array[smallest])
{
smallest = j;
}
}
if (smallest != i)
{
SwapValues(the_array[i], the_array[smallest]);
}
}
return passes;
}
int OptimizedBubbleSort(int the_array[], unsigned int size)//Apply the optimized bubble sort algorithm to sort an array of integers.
{
int passes = 0;
for (int i = size - 1; i > 0; i--)
{
bool swapped = false;
passes++;
for (int j = 0; j < i; j++)
{
if (the_array[j] > the_array[j + 1])
{
SwapValues(the_array[j], the_array[j + 1]);
swapped = true;
}
}
if (swapped == false)
{
break;
}
}
return passes;
}
// Tendo o pai como referência, o mesmo é comparado com seus filhos e trocado
// caso a sua prioridade seja menor que a de um deles.
void DownwardsMax(Heap *intervals, int position) {
//Assume que o filho de maior valor é o da esquerda.
int highest_son_position = 2*position+1;
bool stop = false;
// Enquanto o vetor ainda estiver sendo percorrido e o pai
// não ser maior que ambos seus filhos...
while((!stop) && (highest_son_position < (*intervals).size)) {
// Caso os filhos da direita e esquerda existirem e o valor do filho de
// maior valor for menor que o do irmão, significa que a posição do filho de
// maior valor é a posição do irmão.
int father_value = (*intervals).node[position].max;
if(BrotherHasHigherValue((*intervals), highest_son_position)) {
highest_son_position += 1;
// Garante que o valor a ser utilizado é o correto.
AssignValues(&(*intervals).node[highest_son_position]);
}
// Caso o pai possua prioridade menor que a do filho de maior prioridade,
// troca os valores de ambos entre si.
if(father_value < (*intervals).node[highest_son_position].max) {
SwapValues(&(*intervals).node[position].max,
&(*intervals).node[highest_son_position].max);
position = highest_son_position;
highest_son_position = (2 * highest_son_position) + 1;
//Ajusta os valores máximo e mínimo, caso necessário.
AssignValues(&(*intervals).node[position]);
//Caso o pai esteja na posição correta, interrompe o loop.
} else {
stop = true;
}
}
AssignValues(&(*intervals).node[position]);
}
/*
====================
idMD5Mesh::ParseMesh
====================
*/
void idMD5Mesh::ParseMesh( idLexer& parser, int numJoints, const idJointMat* joints )
{
idToken token;
idToken name;
parser.ExpectTokenString( "{" );
//
// parse name
//
if( parser.CheckTokenString( "name" ) )
{
parser.ReadToken( &name );
}
//
// parse shader
//
parser.ExpectTokenString( "shader" );
parser.ReadToken( &token );
idStr shaderName = token;
shader = declManager->FindMaterial( shaderName );
//
// parse texture coordinates
//
parser.ExpectTokenString( "numverts" );
int count = parser.ParseInt();
if( count < 0 )
{
parser.Error( "Invalid size: %s", token.c_str() );
}
this->numVerts = count;
idList<idVec2> texCoords;
idList<int> firstWeightForVertex;
idList<int> numWeightsForVertex;
texCoords.SetNum( count );
firstWeightForVertex.SetNum( count );
numWeightsForVertex.SetNum( count );
int numWeights = 0;
int maxweight = 0;
for( int i = 0; i < texCoords.Num(); i++ )
{
parser.ExpectTokenString( "vert" );
parser.ParseInt();
parser.Parse1DMatrix( 2, texCoords[ i ].ToFloatPtr() );
firstWeightForVertex[ i ] = parser.ParseInt();
numWeightsForVertex[ i ] = parser.ParseInt();
if( !numWeightsForVertex[ i ] )
{
parser.Error( "Vertex without any joint weights." );
}
numWeights += numWeightsForVertex[ i ];
if( numWeightsForVertex[ i ] + firstWeightForVertex[ i ] > maxweight )
{
maxweight = numWeightsForVertex[ i ] + firstWeightForVertex[ i ];
}
}
//
// parse tris
//
parser.ExpectTokenString( "numtris" );
count = parser.ParseInt();
if( count < 0 )
{
parser.Error( "Invalid size: %d", count );
}
idList<int> tris;
tris.SetNum( count * 3 );
numTris = count;
for( int i = 0; i < count; i++ )
{
parser.ExpectTokenString( "tri" );
parser.ParseInt();
tris[ i * 3 + 0 ] = parser.ParseInt();
tris[ i * 3 + 1 ] = parser.ParseInt();
tris[ i * 3 + 2 ] = parser.ParseInt();
}
//
// parse weights
//
parser.ExpectTokenString( "numweights" );
count = parser.ParseInt();
if( count < 0 )
{
parser.Error( "Invalid size: %d", count );
}
if( maxweight > count )
{
parser.Warning( "Vertices reference out of range weights in model (%d of %d weights).", maxweight, count );
}
idList<vertexWeight_t> tempWeights;
tempWeights.SetNum( count );
assert( numJoints < 256 ); // so we can pack into bytes
for( int i = 0; i < count; i++ )
{
parser.ExpectTokenString( "weight" );
parser.ParseInt();
int jointnum = parser.ParseInt();
if( ( jointnum < 0 ) || ( jointnum >= numJoints ) )
{
parser.Error( "Joint Index out of range(%d): %d", numJoints, jointnum );
}
tempWeights[ i ].joint = jointnum;
tempWeights[ i ].jointWeight = parser.ParseFloat();
parser.Parse1DMatrix( 3, tempWeights[ i ].offset.ToFloatPtr() );
}
// create pre-scaled weights and an index for the vertex/joint lookup
idVec4* scaledWeights = ( idVec4* ) Mem_Alloc16( numWeights * sizeof( scaledWeights[0] ), TAG_MD5_WEIGHT );
int* weightIndex = ( int* ) Mem_Alloc16( numWeights * 2 * sizeof( weightIndex[0] ), TAG_MD5_INDEX );
memset( weightIndex, 0, numWeights * 2 * sizeof( weightIndex[0] ) );
count = 0;
for( int i = 0; i < texCoords.Num(); i++ )
{
int num = firstWeightForVertex[i];
for( int j = 0; j < numWeightsForVertex[i]; j++, num++, count++ )
{
scaledWeights[count].ToVec3() = tempWeights[num].offset * tempWeights[num].jointWeight;
scaledWeights[count].w = tempWeights[num].jointWeight;
weightIndex[count * 2 + 0] = tempWeights[num].joint * sizeof( idJointMat );
}
weightIndex[count * 2 - 1] = 1;
}
parser.ExpectTokenString( "}" );
// update counters
c_numVerts += texCoords.Num();
c_numWeights += numWeights;
c_numWeightJoints++;
for( int i = 0; i < numWeights; i++ )
{
c_numWeightJoints += weightIndex[i * 2 + 1];
}
//
// build a base pose that can be used for skinning
//
idDrawVert* basePose = ( idDrawVert* )Mem_ClearedAlloc( texCoords.Num() * sizeof( *basePose ), TAG_MD5_BASE );
for( int j = 0, i = 0; i < texCoords.Num(); i++ )
{
idVec3 v = ( *( idJointMat* )( ( byte* )joints + weightIndex[j * 2 + 0] ) ) * scaledWeights[j];
while( weightIndex[j * 2 + 1] == 0 )
{
j++;
v += ( *( idJointMat* )( ( byte* )joints + weightIndex[j * 2 + 0] ) ) * scaledWeights[j];
}
j++;
basePose[i].Clear();
basePose[i].xyz = v;
basePose[i].SetTexCoord( texCoords[i] );
}
// build the weights and bone indexes into the verts, so they will be duplicated
// as necessary at mirror seems
static int maxWeightsPerVert;
static float maxResidualWeight;
const int MAX_VERTEX_WEIGHTS = 4;
idList< bool > jointIsUsed;
jointIsUsed.SetNum( numJoints );
for( int i = 0; i < jointIsUsed.Num(); i++ )
{
jointIsUsed[i] = false;
}
numMeshJoints = 0;
maxJointVertDist = 0.0f;
//-----------------------------------------
// new-style setup for fixed four weights and normal / tangent deformation
//
// Several important models have >25% residual weight in joints after the
// first four, which is worrisome for using a fixed four joint deformation.
//-----------------------------------------
for( int i = 0; i < texCoords.Num(); i++ )
{
idDrawVert& dv = basePose[i];
// some models do have >4 joint weights, so it is necessary to sort and renormalize
// sort the weights and take the four largest
int weights[256];
const int numWeights = numWeightsForVertex[ i ];
for( int j = 0; j < numWeights; j++ )
{
weights[j] = firstWeightForVertex[i] + j;
}
// bubble sort
for( int j = 0; j < numWeights; j++ )
{
for( int k = 0; k < numWeights - 1 - j; k++ )
{
if( tempWeights[weights[k]].jointWeight < tempWeights[weights[k + 1]].jointWeight )
{
SwapValues( weights[k], weights[k + 1] );
}
}
}
if( numWeights > maxWeightsPerVert )
{
maxWeightsPerVert = numWeights;
}
const int usedWeights = Min( MAX_VERTEX_WEIGHTS, numWeights );
float totalWeight = 0;
for( int j = 0; j < numWeights; j++ )
{
totalWeight += tempWeights[weights[j]].jointWeight;
}
assert( totalWeight > 0.999f && totalWeight < 1.001f );
float usedWeight = 0;
for( int j = 0; j < usedWeights; j++ )
{
usedWeight += tempWeights[weights[j]].jointWeight;
}
const float residualWeight = totalWeight - usedWeight;
if( residualWeight > maxResidualWeight )
{
maxResidualWeight = residualWeight;
}
byte finalWeights[MAX_VERTEX_WEIGHTS] = { 0 };
byte finalJointIndecies[MAX_VERTEX_WEIGHTS] = { 0 };
for( int j = 0; j < usedWeights; j++ )
{
const vertexWeight_t& weight = tempWeights[weights[j]];
const int jointIndex = weight.joint;
const float fw = weight.jointWeight;
assert( fw >= 0.0f && fw <= 1.0f );
const float normalizedWeight = fw / usedWeight;
finalWeights[j] = idMath::Ftob( normalizedWeight * 255.0f );
finalJointIndecies[j] = jointIndex;
}
// Sort the weights and indices for hardware skinning
for( int k = 0; k < 3; ++k )
{
for( int l = k + 1; l < 4; ++l )
{
if( finalWeights[l] > finalWeights[k] )
{
SwapValues( finalWeights[k], finalWeights[l] );
SwapValues( finalJointIndecies[k], finalJointIndecies[l] );
}
}
}
// Give any left over to the biggest weight
finalWeights[0] += Max( 255 - finalWeights[0] - finalWeights[1] - finalWeights[2] - finalWeights[3], 0 );
dv.color[0] = finalJointIndecies[0];
dv.color[1] = finalJointIndecies[1];
dv.color[2] = finalJointIndecies[2];
dv.color[3] = finalJointIndecies[3];
dv.color2[0] = finalWeights[0];
dv.color2[1] = finalWeights[1];
dv.color2[2] = finalWeights[2];
dv.color2[3] = finalWeights[3];
for( int j = usedWeights; j < 4; j++ )
{
assert( dv.color2[j] == 0 );
}
for( int j = 0; j < usedWeights; j++ )
{
if( !jointIsUsed[finalJointIndecies[j]] )
{
jointIsUsed[finalJointIndecies[j]] = true;
numMeshJoints++;
}
const idJointMat& joint = joints[finalJointIndecies[j]];
float dist = ( dv.xyz - joint.GetTranslation() ).Length();
if( dist > maxJointVertDist )
{
maxJointVertDist = dist;
}
}
}
meshJoints = ( byte* ) Mem_Alloc( numMeshJoints * sizeof( meshJoints[0] ), TAG_MODEL );
numMeshJoints = 0;
for( int i = 0; i < numJoints; i++ )
{
if( jointIsUsed[i] )
{
meshJoints[numMeshJoints++] = i;
}
}
// build the deformInfo and collect a final base pose with the mirror
// seam verts properly including the bone weights
deformInfo = R_BuildDeformInfo( texCoords.Num(), basePose, tris.Num(), tris.Ptr(),
shader->UseUnsmoothedTangents() );
for( int i = 0; i < deformInfo->numOutputVerts; i++ )
{
for( int j = 0; j < 4; j++ )
{
if( deformInfo->verts[i].color[j] >= numJoints )
{
idLib::FatalError( "Bad joint index" );
}
}
}
Mem_Free( basePose );
}
/*
====================
idSurface_Polytope::SplitPolytope
====================
*/
int idSurface_Polytope::SplitPolytope( const idPlane &plane, const float epsilon, idSurface_Polytope **front, idSurface_Polytope **back ) const {
int side, i, j, s, v0, v1, v2, edgeNum;
idSurface *surface[2];
idSurface_Polytope *polytopeSurfaces[2], *surf;
int *onPlaneEdges[2];
onPlaneEdges[0] = (int *) _alloca( indexes.Num() / 3 * sizeof( int ) );
onPlaneEdges[1] = (int *) _alloca( indexes.Num() / 3 * sizeof( int ) );
side = Split( plane, epsilon, &surface[0], &surface[1], onPlaneEdges[0], onPlaneEdges[1] );
*front = polytopeSurfaces[0] = new (TAG_IDLIB_SURFACE) idSurface_Polytope;
*back = polytopeSurfaces[1] = new (TAG_IDLIB_SURFACE) idSurface_Polytope;
for ( s = 0; s < 2; s++ ) {
if ( surface[s] ) {
polytopeSurfaces[s] = new idSurface_Polytope( *surface[s] );
delete surface[s];
surface[s] = NULL;
}
}
*front = polytopeSurfaces[0];
*back = polytopeSurfaces[1];
if ( side != SIDE_CROSS ) {
return side;
}
// add triangles to close off the front and back polytope
for ( s = 0; s < 2; s++ ) {
surf = polytopeSurfaces[s];
edgeNum = surf->edgeIndexes[onPlaneEdges[s][0]];
v0 = surf->edges[abs(edgeNum)].verts[INT32_SIGNBITSET(edgeNum)];
v1 = surf->edges[abs(edgeNum)].verts[INT32_SIGNBITNOTSET(edgeNum)];
for ( i = 1; onPlaneEdges[s][i] >= 0; i++ ) {
for ( j = i+1; onPlaneEdges[s][j] >= 0; j++ ) {
edgeNum = surf->edgeIndexes[onPlaneEdges[s][j]];
if ( v1 == surf->edges[abs(edgeNum)].verts[INT32_SIGNBITSET(edgeNum)] ) {
v1 = surf->edges[abs(edgeNum)].verts[INT32_SIGNBITNOTSET(edgeNum)];
SwapValues( onPlaneEdges[s][i], onPlaneEdges[s][j] );
break;
}
}
}
for ( i = 2; onPlaneEdges[s][i] >= 0; i++ ) {
edgeNum = surf->edgeIndexes[onPlaneEdges[s][i]];
v1 = surf->edges[abs(edgeNum)].verts[INT32_SIGNBITNOTSET(edgeNum)];
v2 = surf->edges[abs(edgeNum)].verts[INT32_SIGNBITSET(edgeNum)];
surf->indexes.Append( v0 );
surf->indexes.Append( v1 );
surf->indexes.Append( v2 );
}
surf->GenerateEdgeIndexes();
}
return side;
}
/*
====================
idRenderModelLiquid::Update
====================
*/
void idRenderModelLiquid::Update()
{
int x, y;
float* p2;
float* p1;
float value;
time += update_tics;
SwapValues( page1, page2 );
if( time > nextDropTime )
{
WaterDrop( -1, -1, page2 );
nextDropTime = time + drop_delay;
}
else if( time < nextDropTime - drop_delay )
{
nextDropTime = time + drop_delay;
}
p1 = page1;
p2 = page2;
switch( liquid_type )
{
case 0 :
for( y = 1; y < verts_y - 1; y++ )
{
p2 += verts_x;
p1 += verts_x;
for( x = 1; x < verts_x - 1; x++ )
{
value =
( p2[ x + verts_x ] +
p2[ x - verts_x ] +
p2[ x + 1 ] +
p2[ x - 1 ] +
p2[ x - verts_x - 1 ] +
p2[ x - verts_x + 1 ] +
p2[ x + verts_x - 1 ] +
p2[ x + verts_x + 1 ] +
p2[ x ] ) * ( 2.0f / 9.0f ) -
p1[ x ];
p1[ x ] = value * density;
}
}
break;
case 1 :
for( y = 1; y < verts_y - 1; y++ )
{
p2 += verts_x;
p1 += verts_x;
for( x = 1; x < verts_x - 1; x++ )
{
value =
( p2[ x + verts_x ] +
p2[ x - verts_x ] +
p2[ x + 1 ] +
p2[ x - 1 ] +
p2[ x - verts_x - 1 ] +
p2[ x - verts_x + 1 ] +
p2[ x + verts_x - 1 ] +
p2[ x + verts_x + 1 ] ) * 0.25f -
p1[ x ];
p1[ x ] = value * density;
}
}
break;
case 2 :
for( y = 1; y < verts_y - 1; y++ )
{
p2 += verts_x;
p1 += verts_x;
for( x = 1; x < verts_x - 1; x++ )
{
value =
( p2[ x + verts_x ] +
p2[ x - verts_x ] +
p2[ x + 1 ] +
p2[ x - 1 ] +
p2[ x - verts_x - 1 ] +
p2[ x - verts_x + 1 ] +
p2[ x + verts_x - 1 ] +
p2[ x + verts_x + 1 ] +
p2[ x ] ) * ( 1.0f / 9.0f );
p1[ x ] = value * density;
}
}
break;
}
}
/*!
For 3D and 2D.
@par Revision history:
- 08.06.2006, c
- 02.08.2006
*/
int32 orient_elements( int32 *flag, int32 flag_n_row,
int32 *conn, int32 conn_n_row, int32 conn_n_col,
float64 *coors, int32 coors_n_row, int32 coors_n_col,
int32 *v_roots, int32 v_roots_n_row,
int32 *v_vecs, int32 v_vecs_n_row, int32 v_vecs_n_col,
int32 *swap_from, int32 swap_from_n_row, int32 swap_from_n_col,
int32 *swap_to, int32 swap_to_n_row, int32 swap_to_n_col )
{
#define IR( iel, ir ) (conn[conn_n_col*(iel)+v_roots[ir]])
#define IV( iel, ir, iv ) (conn[conn_n_col*(iel)+v_vecs[v_vecs_n_col*ir+iv]])
#define CONN( iel, ip ) (conn[conn_n_col*(iel)+ip])
#define SWF( ir, is ) (swap_from[swap_from_n_col*ir+is])
#define SWT( ir, is ) (swap_to[swap_to_n_col*ir+is])
int32 ir, iel, ii, ip0, ip1, ip2, ip3, tmp, nc;
float64 v0[3], v1[3], v2[3], v3[3], cross[3], dot[1];
nc = coors_n_col;
if (nc == 4) { // 3D.
for (iel = 0; iel < conn_n_row; iel++) {
flag[iel] = 0;
for (ir = 0; ir < v_roots_n_row; ir++) {
ip0 = IR( iel, ir );
ip1 = IV( iel, ir, 0 );
ip2 = IV( iel, ir, 1 );
ip3 = IV( iel, ir, 2 );
for (ii = 0; ii < 3; ii++) {
v0[ii] = coors[nc*ip0+ii];
v1[ii] = coors[nc*ip1+ii] - v0[ii];
v2[ii] = coors[nc*ip2+ii] - v0[ii];
v3[ii] = coors[nc*ip3+ii] - v0[ii];
}
gtr_cross_product( cross, v1, v2 );
gtr_dot_v3( dot, v3, cross );
/* output( "%d %d -> %d %d %d %d %e\n", iel, ir, ip0, ip1, ip2, ip3, */
/* dot[0] ); */
if (dot[0] < CONST_MachEps) {
flag[iel]++;
for (ii = 0; ii < swap_from_n_col; ii++) {
SwapValues( CONN( iel, SWF( ir, ii ) ),
CONN( iel, SWT( ir, ii ) ), tmp );
/* output( "%d %d\n", SWF( ir, ii ), SWT( ir, ii ) ); */
}
}
}
/* sys_pause(); */
}
} else if (nc == 3) { // 2D.
for (iel = 0; iel < conn_n_row; iel++) {
flag[iel] = 0;
for (ir = 0; ir < v_roots_n_row; ir++) {
ip0 = IR( iel, ir );
ip1 = IV( iel, ir, 0 );
ip2 = IV( iel, ir, 1 );
for (ii = 0; ii < 2; ii++) {
v0[ii] = coors[nc*ip0+ii];
v1[ii] = coors[nc*ip1+ii] - v0[ii];
v2[ii] = coors[nc*ip2+ii] - v0[ii];
}
v1[2] = v2[2] = 0.0;
gtr_cross_product( cross, v1, v2 );
if (cross[2] < CONST_MachEps) {
flag[iel]++;
for (ii = 0; ii < swap_from_n_col; ii++) {
SwapValues( CONN( iel, SWF( ir, ii ) ),
CONN( iel, SWT( ir, ii ) ), tmp );
}
}
}
}
}
return( RET_OK );
#undef IR
#undef IV
#undef CONN
#undef SWF
#undef SWT
}
/*
============
idWinding2D::RayIntersection
============
*/
bool idWinding2D::RayIntersection( const idVec2 &start, const idVec2 &dir, float &scale1, float &scale2, int *edgeNums ) const {
int i, numEdges, localEdgeNums[2];
int sides[MAX_POINTS_ON_WINDING_2D+1], counts[3];
float d1, d2, epsilon = 0.1f;
idVec3 plane, edges[2];
scale1 = scale2 = 0.0f;
counts[SIDE_FRONT] = counts[SIDE_BACK] = counts[SIDE_ON] = 0;
plane = Plane2DFromVecs( start, dir );
for ( i = 0; i < numPoints; i++ ) {
d1 = plane.x * p[i].x + plane.y * p[i].y + plane.z;
if ( d1 > epsilon ) {
sides[i] = SIDE_FRONT;
}
else if ( d1 < -epsilon ) {
sides[i] = SIDE_BACK;
}
else {
sides[i] = SIDE_ON;
}
counts[sides[i]]++;
}
sides[i] = sides[0];
if ( !counts[SIDE_FRONT] ) {
return false;
}
if ( !counts[SIDE_BACK] ) {
return false;
}
numEdges = 0;
for ( i = 0; i < numPoints; i++ ) {
if ( sides[i] != sides[i+1] && sides[i+1] != SIDE_ON ) {
localEdgeNums[numEdges] = i;
edges[numEdges++] = Plane2DFromPoints( p[i], p[(i+1)%numPoints] );
if ( numEdges >= 2 ) {
break;
}
}
}
if ( numEdges < 2 ) {
return false;
}
d1 = edges[0].x * start.x + edges[0].y * start.y + edges[0].z;
d2 = - ( edges[0].x * dir.x + edges[0].y * dir.y );
if ( d2 == 0.0f ) {
return false;
}
scale1 = d1 / d2;
d1 = edges[1].x * start.x + edges[1].y * start.y + edges[1].z;
d2 = - ( edges[1].x * dir.x + edges[1].y * dir.y );
if ( d2 == 0.0f ) {
return false;
}
scale2 = d1 / d2;
if ( idMath::Fabs( scale1 ) > idMath::Fabs( scale2 ) ) {
SwapValues( scale1, scale2 );
SwapValues( localEdgeNums[0], localEdgeNums[1] );
}
if ( edgeNums ) {
edgeNums[0] = localEdgeNums[0];
edgeNums[1] = localEdgeNums[1];
}
return true;
}
