diff options
Diffstat (limited to 'extensions/smgrid.cpp')
| -rw-r--r-- | extensions/smgrid.cpp | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/extensions/smgrid.cpp b/extensions/smgrid.cpp new file mode 100644 index 0000000..d78864f --- /dev/null +++ b/extensions/smgrid.cpp @@ -0,0 +1,111 @@ +// -*- C++ -*- +/* + * Simple MultimEdia LiTerator(SMELT) + * by Chris Xiong 2015 + * Distortion grid implementation + * + * WARNING: This library is in development and interfaces would be very + * unstable. + * + */ +#include "smgrid.hpp" +#include <cstring> +SMELT *smGrid::sm=0; +smGrid::smGrid(int _cc,int _rc) +{ + sm=smGetInterface(SMELT_APILEVEL); + cc=_cc;rc=_rc;cw=ch=.0; + quad.tex=0;quad.blend=BLEND_ALPHABLEND; + pos=new smVertex[cc*rc]; + for(int i=0;i<cc*rc;++i) + { + pos[i].x=pos[i].y=pos[i].z=.0; + pos[i].tx=pos[i].ty=.0; + pos[i].col=0xFFFFFFFF; + } +} +smGrid::smGrid(const smGrid ©) +{ + sm=smGetInterface(SMELT_APILEVEL); + cc=copy.cc;rc=copy.rc;cw=copy.cw;ch=copy.ch; + quad=copy.quad;tx=copy.tx;ty=copy.ty;w=copy.w;h=copy.h; + pos=new smVertex[cc*rc];memcpy(pos,copy.pos,sizeof(smVertex)*cc*rc); +} +smGrid::~smGrid(){delete[] pos;sm->smRelease();} +smGrid& smGrid::operator =(const smGrid ©) +{ + if(this!=©) + { + sm=smGetInterface(SMELT_APILEVEL); + cc=copy.cc;rc=copy.rc;cw=copy.cw;ch=copy.ch; + quad=copy.quad;tx=copy.tx;ty=copy.ty;w=copy.w;h=copy.h; + delete[] pos;pos=new smVertex[cc*rc]; + memcpy(pos,copy.pos,sizeof(smVertex)*cc*rc); + } + return *this; +} +void smGrid::setTexture(SMTEX tex){quad.tex=tex;} +void smGrid::setTextureRect4f(float _x,float _y,float _w,float _h) +{ + float tw,th; + tx=_x;ty=_y;w=_w;h=_h; + if(quad.tex) + { + tw=(float)sm->smTextureGetWidth(quad.tex); + th=(float)sm->smTextureGetHeight(quad.tex); + } + else tw=w,th=h; + cw=w/(cc-1);ch=h/(rc-1); + for(int i=0;i<rc;++i) + for(int j=0;j<cc;++j) + { + pos[i*cc+j].tx=(tx+j*cw)/tw; + pos[i*cc+j].ty=(ty+i*ch)/th; + pos[i*cc+j].x=j*cw; + pos[i*cc+j].y=i*ch; + } +} +void smGrid::setTextureRectv(smTexRect rect){setTextureRect4f(rect.x,rect.y,rect.w,rect.h);} +void smGrid::setBlend(int blend){quad.blend=blend;} +void smGrid::setColor(int c,int r,DWORD col){if(c<cc&&r<rc)pos[r*cc+c].col=col;} +void smGrid::setPos(int c,int r,float x,float y,float z,int ref) +{ + if(c<cc&&r<rc) + { + if(ref==GRID_REFCENTER)x+=cw*(cc-1)/2,y+=ch*(rc-1)/2; + if(ref==GRID_REFNODE)x+=c*cw,y+=r*ch; + if(ref==GRID_REFCURRENT)x+=pos[r*cc+c].x,y+=pos[r*cc+c].y; + pos[r*cc+c].x=x; + pos[r*cc+c].y=y; + } +} +void smGrid::clear(DWORD col) +{ + for(int i=0;i<rc;++i) + for(int j=0;j<cc;++j) + { + pos[i*cc+j].x=j*cw; + pos[i*cc+j].y=i*ch; + pos[i*cc+j].z=.0; + pos[i*cc+j].col=col; + } +} +void smGrid::render(float x,float y) +{ + for(int i=0;i<rc-1;++i) + for(int j=0;j<cc-1;++j) + { + int id=i*cc+j; + for(int k=0;k<4;++k) + { + int sub=k<2?id+k:id+cc+3-k; + quad.v[k].tx=pos[sub].tx; + quad.v[k].ty=pos[sub].ty; + quad.v[k].x=x+pos[sub].x; + quad.v[k].y=y+pos[sub].y; + quad.v[k].z=pos[sub].z; + quad.v[k].col=pos[sub].col; + } + sm->smRenderQuad(&quad); + } +} |