hgedistort.cpp
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上传日期:2022-06-07
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文件大小:5k
- /*
- ** Haaf's Game Engine 1.5
- ** Copyright (C) 2003-2004, Relish Games
- ** hge.relishgames.com
- **
- ** hgeDistortionMesh helper class implementation
- */
- #include "....includehgedistort.h"
- HGE *hgeDistortionMesh::hge=0;
- hgeDistortionMesh::hgeDistortionMesh(int cols, int rows)
- {
- int i;
-
- hge=hgeCreate(HGE_VERSION);
- nRows=rows;
- nCols=cols;
- cellw=cellh=0;
- quad.tex=0;
- quad.blend=BLEND_COLORMUL | BLEND_ALPHABLEND | BLEND_ZWRITE;
- disp_array=new hgeVertex[rows*cols];
- for(i=0;i<rows*cols;i++)
- {
- disp_array[i].x=0.0f;
- disp_array[i].y=0.0f;
- disp_array[i].tx=0.0f;
- disp_array[i].ty=0.0f;
-
- disp_array[i].z=0.5f;
- disp_array[i].col=0xFFFFFFFF;
- }
- }
- hgeDistortionMesh::hgeDistortionMesh(const hgeDistortionMesh &dm)
- {
- hge=hgeCreate(HGE_VERSION);
- nRows=dm.nRows;
- nCols=dm.nCols;
- cellw=dm.cellw;
- cellh=dm.cellh;
- tx=dm.tx;
- ty=dm.ty;
- width=dm.width;
- height=dm.height;
- quad=dm.quad;
- disp_array=new hgeVertex[nRows*nCols];
- memcpy(disp_array, dm.disp_array, sizeof(hgeVertex)*nRows*nCols);
- }
- hgeDistortionMesh::~hgeDistortionMesh()
- {
- delete[] disp_array;
- hge->Release();
- }
- hgeDistortionMesh& hgeDistortionMesh::operator= (const hgeDistortionMesh &dm)
- {
- if(this!=&dm)
- {
- nRows=dm.nRows;
- nCols=dm.nCols;
- cellw=dm.cellw;
- cellh=dm.cellh;
- tx=dm.tx;
- ty=dm.ty;
- width=dm.width;
- height=dm.height;
- quad=dm.quad;
- delete[] disp_array;
- disp_array=new hgeVertex[nRows*nCols];
- memcpy(disp_array, dm.disp_array, sizeof(hgeVertex)*nRows*nCols);
- }
- return *this;
-
- }
- void hgeDistortionMesh::SetTexture(HTEXTURE tex)
- {
- quad.tex=tex;
- }
- void hgeDistortionMesh::SetTextureRect(float x, float y, float w, float h)
- {
- int i,j;
- float tw,th;
- tx=x; ty=y; width=w; height=h;
- if (quad.tex)
- {
- tw=(float)hge->Texture_GetWidth(quad.tex);
- th=(float)hge->Texture_GetHeight(quad.tex);
- }
- else
- {
- tw = w;
- th = h;
- }
- cellw=w/(nCols-1);
- cellh=h/(nRows-1);
- for(j=0; j<nRows; j++)
- for(i=0; i<nCols; i++)
- {
- disp_array[j*nCols+i].tx=(x+i*cellw)/tw;
- disp_array[j*nCols+i].ty=(y+j*cellh)/th;
- disp_array[j*nCols+i].x=i*cellw;
- disp_array[j*nCols+i].y=j*cellh;
- }
- }
- void hgeDistortionMesh::SetBlendMode(int blend)
- {
- quad.blend=blend;
- }
- void hgeDistortionMesh::Clear(DWORD col, float z)
- {
- int i,j;
- for(j=0; j<nRows; j++)
- for(i=0; i<nCols; i++)
- {
- disp_array[j*nCols+i].x=i*cellw;
- disp_array[j*nCols+i].y=j*cellh;
- disp_array[j*nCols+i].col=col;
- disp_array[j*nCols+i].z=z;
- }
- }
- void hgeDistortionMesh::Render(float x, float y)
- {
- int i,j,idx;
- for(j=0; j<nRows-1; j++)
- for(i=0; i<nCols-1; i++)
- {
- idx=j*nCols+i;
- quad.v[0].tx=disp_array[idx].tx;
- quad.v[0].ty=disp_array[idx].ty;
- quad.v[0].x=x+disp_array[idx].x;
- quad.v[0].y=y+disp_array[idx].y;
- quad.v[0].z=disp_array[idx].z;
- quad.v[0].col=disp_array[idx].col;
- quad.v[1].tx=disp_array[idx+1].tx;
- quad.v[1].ty=disp_array[idx+1].ty;
- quad.v[1].x=x+disp_array[idx+1].x;
- quad.v[1].y=y+disp_array[idx+1].y;
- quad.v[1].z=disp_array[idx+1].z;
- quad.v[1].col=disp_array[idx+1].col;
- quad.v[2].tx=disp_array[idx+nCols+1].tx;
- quad.v[2].ty=disp_array[idx+nCols+1].ty;
- quad.v[2].x=x+disp_array[idx+nCols+1].x;
- quad.v[2].y=y+disp_array[idx+nCols+1].y;
- quad.v[2].z=disp_array[idx+nCols+1].z;
- quad.v[2].col=disp_array[idx+nCols+1].col;
- quad.v[3].tx=disp_array[idx+nCols].tx;
- quad.v[3].ty=disp_array[idx+nCols].ty;
- quad.v[3].x=x+disp_array[idx+nCols].x;
- quad.v[3].y=y+disp_array[idx+nCols].y;
- quad.v[3].z=disp_array[idx+nCols].z;
- quad.v[3].col=disp_array[idx+nCols].col;
- hge->Gfx_RenderQuad(&quad);
- }
- }
- void hgeDistortionMesh::SetZ(int col, int row, float z)
- {
- if(row<nRows && col<nCols) disp_array[row*nCols+col].z=z;
- }
- void hgeDistortionMesh::SetColor(int col, int row, DWORD color)
- {
- if(row<nRows && col<nCols) disp_array[row*nCols+col].col=color;
- }
- void hgeDistortionMesh::SetDisplacement(int col, int row, float dx, float dy, int ref)
- {
- if(row<nRows && col<nCols)
- {
- switch(ref)
- {
- case HGEDISP_NODE: dx+=col*cellw; dy+=row*cellh; break;
- case HGEDISP_CENTER: dx+=cellw*(nCols-1)/2;dy+=cellh*(nRows-1)/2; break;
- case HGEDISP_TOPLEFT: break;
- }
- disp_array[row*nCols+col].x=dx;
- disp_array[row*nCols+col].y=dy;
- }
- }
- float hgeDistortionMesh::GetZ(int col, int row) const
- {
- if(row<nRows && col<nCols) return disp_array[row*nCols+col].z;
- else return 0.0f;
- }
- DWORD hgeDistortionMesh::GetColor(int col, int row) const
- {
- if(row<nRows && col<nCols) return disp_array[row*nCols+col].col;
- else return 0;
- }
- void hgeDistortionMesh::GetDisplacement(int col, int row, float *dx, float *dy, int ref) const
- {
- if(row<nRows && col<nCols)
- {
- switch(ref)
- {
- case HGEDISP_NODE: *dx=disp_array[row*nCols+col].x-col*cellw;
- *dy=disp_array[row*nCols+col].y-row*cellh;
- break;
- case HGEDISP_CENTER: *dx=disp_array[row*nCols+col].x-cellw*(nCols-1)/2;
- *dy=disp_array[row*nCols+col].x-cellh*(nRows-1)/2;
- break;
- case HGEDISP_TOPLEFT: *dx=disp_array[row*nCols+col].x;
- *dy=disp_array[row*nCols+col].y;
- break;
- }
- }
- }