// Render one terrain in wireframe mode
void RenderTerrainWire(COLOR &colEdges)
{
// set wireframe mode
gfxEnableDepthBias();
gfxPolygonMode(GFX_LINE);
// remember edges color
_colTerrainEdges = colEdges;
ASSERT(_ptrTerrain!=NULL);
// draw last node
INDEX ctqtl = _ptrTerrain->tr_aqtlQuadTreeLevels.Count();
QuadTreeLevel &qtl = _ptrTerrain->tr_aqtlQuadTreeLevels[ctqtl-1];
DrawWireQuadTreeNode(qtl.qtl_iFirstNode);
// set fill mode
gfxDisableDepthBias();
gfxPolygonMode(GFX_FILL);
}
void ShowSelectionInternal(CTerrain *ptrTerrain, Rect &rcExtract, CTextureData *ptdBrush, GFXColor colSelection, FLOAT fStrenght, SelectionFill sfFill)
{
ASSERT(ptrTerrain!=NULL);
ASSERT(ptdBrush!=NULL);
Rect rcSelection;
FLOATaabbox3D bboxSelection;
// Clamp rect used for extraction
rcSelection.rc_iLeft = Clamp(rcExtract.rc_iLeft , 0, ptrTerrain->tr_pixHeightMapWidth);
rcSelection.rc_iTop = Clamp(rcExtract.rc_iTop , 0, ptrTerrain->tr_pixHeightMapHeight);
rcSelection.rc_iRight = Clamp(rcExtract.rc_iRight , 0, ptrTerrain->tr_pixHeightMapWidth);
rcSelection.rc_iBottom = Clamp(rcExtract.rc_iBottom , 0, ptrTerrain->tr_pixHeightMapHeight);
// Prepare box for vertex selection
bboxSelection = FLOAT3D(rcSelection.rc_iLeft, 0, rcSelection.rc_iTop);
bboxSelection |= FLOAT3D(rcSelection.rc_iRight, 0, rcSelection.rc_iBottom);
// Stretch selection box
bboxSelection.minvect(1) *= ptrTerrain->tr_vStretch(1);
bboxSelection.minvect(3) *= ptrTerrain->tr_vStretch(3);
bboxSelection.maxvect(1) *= ptrTerrain->tr_vStretch(1);
bboxSelection.maxvect(3) *= ptrTerrain->tr_vStretch(3);
// Set selection box height
FLOATaabbox3D bboxAllTerrain;
ptrTerrain->GetAllTerrainBBox(bboxAllTerrain);
bboxSelection.minvect(2) = bboxAllTerrain.minvect(2);
bboxSelection.maxvect(2) = bboxAllTerrain.maxvect(2);
GFXVertex *pavVertices;
INDEX *paiIndices;
INDEX ctVertices;
INDEX ctIndices;
// Extract vertices in selection rect
ExtractVerticesInRect(ptrTerrain, rcSelection, &pavVertices, &paiIndices, ctVertices, ctIndices);
if(ctVertices!=rcSelection.Width()*rcSelection.Height()) {
ASSERT(FALSE);
return;
}
// if no vertices
if(ctVertices==0) {
return;
}
// Prepare vertex colors for selection preview
PIX pixWidth = rcSelection.Width();
PIX pixHeight = rcSelection.Height();
INDEX iStepX = ptdBrush->GetWidth() - pixWidth;
INDEX iFirst = 0;
if(rcExtract.rc_iTop<0) {
iFirst += -rcExtract.rc_iTop*ptdBrush->GetWidth();
}
if(rcExtract.rc_iLeft<0) {
iFirst += -rcExtract.rc_iLeft;
}
_aiExtColors.Push(ctVertices);
GFXColor *pacolColor = (GFXColor*)&_aiExtColors[0];
GFXColor *pacolBrush = (GFXColor*)&ptdBrush->td_pulFrames[iFirst];
// Fill vertex colors for selection preview
SLONG slStrength = (SLONG) (Clamp(Abs(fStrenght),0.0f,1.0f) * 256.0f);
// for each row
for(INDEX iy=0;iy<pixHeight;iy++) {
// for each col
for(INDEX ix=0;ix<pixWidth;ix++) {
pacolColor->ul.abgr = colSelection.ul.abgr;
pacolColor->ub.a = (pacolBrush->ub.r*slStrength)>>8;
pacolColor++;
pacolBrush++;
}
pacolBrush+=iStepX;
}
// Render selected polygons for selection preview
if(sfFill == SF_WIREFRAME) {
gfxPolygonMode(GFX_LINE);
gfxEnableDepthBias();
}
if(sfFill != SF_POINTS) {
// Draw selection
gfxDisableTexture();
gfxDisableAlphaTest();
gfxEnableBlend();
gfxBlendFunc(GFX_SRC_ALPHA, GFX_INV_SRC_ALPHA);
gfxSetVertexArray(pavVertices,ctVertices);
gfxSetColorArray(&_aiExtColors[0]);
gfxLockArrays();
gfxDrawElements(ctIndices,paiIndices);
gfxUnlockArrays();
gfxDisableBlend();
}
if(sfFill == SF_WIREFRAME) {
gfxDisableDepthBias();
gfxPolygonMode(GFX_FILL);
}
if(sfFill == SF_POINTS) {
DrawSelectedVertices(pavVertices,&_aiExtColors[0],ctVertices);
}
}
