void EditView::DrawView( Box const& viewbox, Box* affectedview )
{
// note: viewbox can be outside the project boundary
// Colour checkerboard[2] = { Colour(192,192,192), Colour(224,224,224) };
Box vb(viewbox);
vb.ClipAgainst(m_ViewBox);
Img const& img = Proj().GetAnim().GetFrame(Frame());
// get project bounds in view coords (unclipped)
Box pbox(ProjToView(img.Bounds()));
// step x,y through view coords of the area to draw
int y;
// int xmin = std::min(pbox.XMin(), vb.XMax()+1);
int xbegin = std::min(pbox.x, vb.x + vb.w);
int xend = std::min(pbox.x + pbox.w, vb.x + vb.w);
for(y=vb.YMin(); y<=vb.YMax(); ++y) {
RGBX8* dest = m_Canvas->Ptr_RGBX8(vb.x,y);
int x=vb.XMin();
// scanline intersects canvas?
if(y<pbox.YMin() || y>pbox.YMax()) {
// line is above or below the project
while(x<=vb.XMax()) {
*dest++ = checker2(x,y);
++x;
}
continue;
}
// left of project canvas
while(x<xbegin) {
*dest++ = checker2(x,y);
++x;
}
if(x<xend) {
// on the project canvas
Point p( ViewToProj(Point(x,y)) );
switch( img.Fmt() ) {
case FMT_I8:
{
/*
if( p.x<0) {
printf("POOP:\n");
printf("pbox: %d %d %d %d\n", pbox.x, pbox.y, pbox.w, pbox.h);
printf("vb : %d %d %d %d\n", vb.x, vb.y, vb.w, vb.h);
printf("x,y : %d %d\n", x,y);
printf("p.x,p.y : %d %d\n", p.x,p.y);
printf("xbegin,xend : %d %d\n", xbegin,xend);
}
assert( p.x >=0);
assert( p.x < img.W());
assert( p.y < img.H());
assert( p.y >=0);
*/
//printf("%d\n",y);
I8 const* src = img.PtrConst_I8( p.x,p.y );
while(x<xend) {
int cx = x + (m_Offset.x*m_XZoom);
int pixstop = x + (m_XZoom-(cx%m_XZoom));
if(pixstop>xend)
pixstop=xend;
RGBA8 c = Proj().PaletteConst().GetColour(*src++);
while(x<pixstop)
{
//*dest++ = c;
*dest++ = Blend(c,checker(x,y));
++x;
}
}
}
break;
case FMT_RGBX8:
{
RGBX8 const* src = img.PtrConst_RGBX8( p.x,p.y );
while(x<xend) {
int cx = x + (m_Offset.x*m_XZoom);
int pixstop = x + (m_XZoom-(cx%m_XZoom));
if(pixstop>xend)
pixstop=xend;
RGBX8 c = *src++;
while(x<pixstop) {
*dest++ = c;
++x;
}
}
}
break;
case FMT_RGBA8:
{
RGBA8 const* src = img.PtrConst_RGBA8( p.x,p.y );
while(x<xend) {
int cx = x + (m_Offset.x*m_XZoom);
int pixstop = x + (m_XZoom-(cx%m_XZoom));
if(pixstop>xend)
pixstop=xend;
RGBA8 c = *src++;
while(x<pixstop) {
*dest++ = Blend(c,checker(x,y));
++x;
}
}
}
break;
default:
assert(false);
break;
}
}
// right of canvas
while(x < vb.x+vb.w)
{
*dest++ = checker2(x,y);
++x;
}
}
if(affectedview)
*affectedview = vb;
}
int main()
{
Point p1(-253.357, -123.36);
Point p2(-190.03, 216.606);
Point p3(-343.349, 286.6);
Point p4(141.604, 279.934);
Point p5(276.591, -46.7012);
Point p6(251.593, -263.347);
Point p7(-3.38184, -343.339);
Point p8(-380.012, -173.355);
Point p9(-98.3726, 39.957);
Point p10(133.271, 124.949);
Point p11(289.923, 301.598);
Point p12(421.577, 23.292);
Point p13(79.9434, -93.3633);
Point p14(-40.0449, 366.592);
Point p15(311.587, 374.924);
Point p16(431.576, 214.94);
Point p17(426.576, -131.693);
Point p18(-265.023, -285.011);
Point p19(369.915, 89.9521);
Point p20(368.249, -15.0376);
Point p21(484.904, 18.2925);
Point p22(-411.675, 283.267);
Point p23(-250.024, 124.949);
Point p24(-80.041, -78.3647);
Point p25(-360.014, 31.6245);
Point p26(-305.019, 356.593);
// built Delaunay triangulation
PS.insert(p1); PS.insert(p2); PS.insert(p3); PS.insert(p4);
PS.insert(p5); PS.insert(p6); PS.insert(p7); PS.insert(p8);
PS.insert(p9); PS.insert(p10); PS.insert(p11); PS.insert(p12);
PS.insert(p13); PS.insert(p14); PS.insert(p15); PS.insert(p16);
PS.insert(p17); PS.insert(p18); PS.insert(p19); PS.insert(p20);
PS.insert(p21); PS.insert(p22); PS.insert(p23); PS.insert(p24);
PS.insert(p25); PS.insert(p26);
std::list<Vertex_handle> LV;
bool correct = true;
// circle emptiness check
Circle cs1(Point(-23.3799, 108.284), 1124.78);
check_empty checker(cs1);
CGAL::range_search(PS,cs1,std::back_inserter(LV),checker,true);
if (checker.get_result()) {
std::cout << "circle not empty !\n";
std::cout << "this is an error !\n"; correct=false;
}
else std::cout << "circle was empty !\n";
Circle cs2(Point(-255.024, -100.029), 23551);
check_empty checker2(cs2);
CGAL::range_search(PS,cs2,std::back_inserter(LV),checker2,true);
if (checker2.get_result()) std::cout << "circle not empty !\n";
else {
std::cout << "circle was empty !\n";
std::cout << "this is an error !\n"; correct=false;
}
// triangle check
Triangle t1(Point(-21.7134, -123.36), Point(84.9429, 74.9536), Point(209.931, -161.69));
Triangle t2(Point(-61.7095, 164.945), Point(-88.3735, 101.618), Point(49.9463, 101.618));
check_empty_triangle tchecker1(t1);
CGAL::range_search(PS,t1.vertex(0),t1.vertex(1),t1.vertex(2),std::back_inserter(LV),tchecker1,true);
if (tchecker1.get_result()) std::cout << "triangle not empty !\n";
else {
std::cout << "triangle was empty !\n";
std::cout << "this is an error !\n"; correct=false;
}
check_empty_triangle tchecker2(t2);
CGAL::range_search(PS,t2.vertex(0),t2.vertex(1),t2.vertex(2),std::back_inserter(LV),tchecker2,true);
if (tchecker2.get_result()) {
std::cout << "triangle not empty !\n";
std::cout << "this is an error !\n"; correct=false;
}
else std::cout << "triangle was empty !\n";
// rectangle check
Rectangle_2 r1(-290.021, -175.022, -125.037, -35.0356);
Rectangle_2 r2(-48.3774, 136.614, -23.3799, 251.603);
check_empty_rectangle rchecker1(r1);
CGAL::range_search(PS,r1.vertex(0),r1.vertex(1),r1.vertex(2),r1.vertex(3),std::back_inserter(LV),rchecker1,true);
if (rchecker1.get_result()) std::cout << "rectangle not empty !\n";
else {
std::cout << "rectangle was empty !\n";
std::cout << "this is an error !\n"; correct=false;
}
check_empty_rectangle rchecker2(r2);
CGAL::range_search(PS,r2.vertex(0),r2.vertex(1),r2.vertex(2),r2.vertex(3),std::back_inserter(LV),rchecker2,true);
if (rchecker2.get_result()) {
std::cout << "rectangle not empty !\n";
std::cout << "this is an error !\n"; correct=false;
}
else std::cout << "rectangle was empty !\n";
if (correct) return 0;
return 1;
}