void Graphics3DExtrude::drawQuad(const Pnt2f& p1, const Pnt2f& p2, const Pnt2f& p3, const Pnt2f& p4,
const Vec2f& t1, const Vec2f& t2, const Vec2f& t3, const Vec2f& t4,
const MaterialUnrecPtr Material,
const Real32& Opacity) const
{
Real32 Alpha( Opacity * getOpacity());
if(Alpha < 1.0 || Material->isTransparent())
{
//Setup the Blending equations properly
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glEnable(GL_BLEND);
}
StateUnrecPtr state = NULL;
if(Material != NULL)
{
state = Material->finalize(MaterialMapKey(),getDrawEnv()->getWindow())->getState();
state->activate(getDrawEnv());
}
glBegin(GL_QUADS);
glColor4f(1.0, 1.0, 1.0, Alpha );
glTexCoord2fv(t1.getValues());
glVertex2fv(p1.getValues());
glTexCoord2fv(t2.getValues());
glVertex2fv(p2.getValues());
glTexCoord2fv(t3.getValues());
glVertex2fv(p3.getValues());
glTexCoord2fv(t4.getValues());
glVertex2fv(p4.getValues());
glEnd();
if(state != NULL)
{
state->deactivate(getDrawEnv());
}
if(Alpha < 1.0 || Material->isTransparent())
{
glDisable(GL_BLEND);
}
}
void Graphics3DExtrude::drawQuad(const Pnt2f& p1, const Pnt2f& p2, const Pnt2f& p3, const Pnt2f& p4,
const Vec2f& t1, const Vec2f& t2, const Vec2f& t3, const Vec2f& t4,
const Color4f& color, const TextureObjChunkUnrecPtr Texture,
const Real32& Opacity) const
{
Real32 Alpha( Opacity * getOpacity() * color.alpha());
if(Alpha < 1.0 || Texture->getImage()->hasAlphaChannel())
{
//Setup the Blending equations properly
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glEnable(GL_BLEND);
}
if(Texture != NULL)
{
Texture->activate(getDrawEnv());
}
glBegin(GL_QUADS);
glColor4f(color.red(), color.green(), color.blue(), Alpha );
glTexCoord2fv(t1.getValues());
glVertex2fv(p1.getValues());
glTexCoord2fv(t2.getValues());
glVertex2fv(p2.getValues());
glTexCoord2fv(t3.getValues());
glVertex2fv(p3.getValues());
glTexCoord2fv(t4.getValues());
glVertex2fv(p4.getValues());
glEnd();
if(Texture != NULL)
{
Texture->deactivate(getDrawEnv());
}
if(Alpha < 1.0 || Texture->getImage()->hasAlphaChannel())
{
glDisable(GL_BLEND);
}
}
// returns how much line A has to be scaled to hit the intersection
// || false if the lines do not intersect
pair<bool, float> Vec2Helper::lineIntersection(Vec2f startLineA, Vec2f dirLineA, Vec2f startLineB, Vec2f dirLineB) {
float u_b = dirLineB.getValues()[1] * dirLineA.getValues()[0] - dirLineB.getValues()[0] * dirLineA.getValues()[1];
if (u_b != 0) {
float uaT = (dirLineB.getValues()[0] * (startLineA.getValues()[1] - startLineB.getValues()[1])) - (dirLineB.getValues()[1] * (startLineA.getValues()[0] - startLineB.getValues()[0]));
//float ubT = (dirLineA.getValues()[0] * (startLineA.getValues()[1] - startLineB.getValues()[1])) - (dirLineA.getValues()[1] * (startLineA.getValues()[0] - startLineB.getValues()[0]));
float ua = uaT / u_b;
//float ub = ubT / u_b;
//if (ua >= 0 && ua <= 1 && ub >= 0 && ub <= 1) {
return make_pair(true, ua);
//}
}
return make_pair(false, 0);
}
void ModuleBuildings::addBuildingWallLevel(Vec2f pos1, Vec2f pos2, int level, int bNum, float elevation) {
srand(bNum); //seed for random windows
float len = (pos2 - pos1).length();
Vec2f wallDir = (pos2 - pos1);
wallDir.normalize();
float wall_segment = Config::get()->WINDOW_DOOR_WIDTH;
float FLOOR_HEIGHT = Config::get()->BUILDING_FLOOR_HEIGHT;
int segN = floor(len / wall_segment);
segN = max(segN, 1);
wall_segment = len / segN;
float low = level * FLOOR_HEIGHT + elevation;
float high = low + FLOOR_HEIGHT;
// insert a door at a random place (when on level 0 && there is enough room)
int doorIndex = -1;
if (level == 0 && segN > 2) doorIndex = bNum % segN;
int N = 4;
float _N = 1./N;
float e = 0.01;
int di = N*float(rand()) / RAND_MAX;
int wi = N*float(rand()) / RAND_MAX;
int fi = N*float(rand()) / RAND_MAX;
float d_tc1 = di * _N + e;
float d_tc2 = di * _N - e + _N;
float w_tc1 = wi * _N + e;
float w_tc2 = wi * _N - e + _N;
float f_tc1 = fi * _N + e;
float f_tc2 = fi * _N - e + _N;
for (int i=0; i<segN; i++) {
Vec2f w1 = pos1 + (wallDir * (i*wall_segment));
Vec2f w2 = pos1 + (wallDir * ((i+1)*wall_segment));
Vec2f wallVector = w2-w1;
Vec3f normal = Vec3f(-wallVector.getValues()[1], 0, wallVector.getValues()[0]);
b_geo_d->pos->addValue(Vec3f(w1.getValues()[0], low, w1.getValues()[1]));
b_geo_d->pos->addValue(Vec3f(w2.getValues()[0], low, w2.getValues()[1]));
b_geo_d->pos->addValue(Vec3f(w2.getValues()[0], high, w2.getValues()[1]));
b_geo_d->pos->addValue(Vec3f(w1.getValues()[0], high, w1.getValues()[1]));
for (int k=0; k<4; k++) {
b_geo_d->inds->addValue(b_geo_d->inds->size());
b_geo_d->norms->addValue(normal);
}
if (i == doorIndex) { // door
b_geo_d->texs2->addValue(Vec2f(d_tc1, 0.5+e));
b_geo_d->texs2->addValue(Vec2f(d_tc2, 0.5+e));
b_geo_d->texs2->addValue(Vec2f(d_tc2, 0.75-e));
b_geo_d->texs2->addValue(Vec2f(d_tc1, 0.75-e));
} else { // window
b_geo_d->texs2->addValue(Vec2f(w_tc1, 0.25+e));
b_geo_d->texs2->addValue(Vec2f(w_tc2, 0.25+e));
b_geo_d->texs2->addValue(Vec2f(w_tc2, 0.5-e));
b_geo_d->texs2->addValue(Vec2f(w_tc1, 0.5-e));
}
// wall
b_geo_d->texs->addValue(Vec2f(f_tc1, e));
b_geo_d->texs->addValue(Vec2f(f_tc2, e));
b_geo_d->texs->addValue(Vec2f(f_tc2, 0.25-e));
b_geo_d->texs->addValue(Vec2f(f_tc1, 0.25-e));
}
}