/*
* Function: horizontallyDisplacedPoint
* Usage: points.insert(2*i+1, horizontallyDisplacedPoint(points[2*i], points[2*i+1], order));
* --------------------------
* Like randomClosePoint, but only displaced the point in the x direction.
*/
GPoint horizontallyDisplacedPoint(GPoint a, GPoint b, int order, double deformation){
double xAve = (a.getX()+b.getX())/2;
double yAve = (a.getY()+b.getY())/2;
double deform = deformation/exp(LIGHTNING_ORDER-order);
double x = randomReal((1-deform)*xAve, (1+deform)*xAve);
return GPoint(x,yAve);
}
/*
* Function: verticallyDisplacedPoint
* Usage: points.insert(2*i+1, verticallyDisplacedPoint(points[2*i], points[2*i+1], order));
* --------------------------
* Like randomClosePoint, but only displaced the point in the y direction.
*/
GPoint verticallyDisplacedPoint(GPoint a, GPoint b, int order){
double xAve = (a.getX()+b.getX())/2;
double yAve = (a.getY()+b.getY())/2;
double deform = BACK_MOUNTAIN_DEFORMATION/exp(BACK_MOUNTAIN_ORDER-order);
double y = randomReal((1-deform)*yAve, (1+deform)*yAve);
return GPoint(xAve,y);
}
GLine::GLine(const GPoint& p0, const GPoint& p1) {
stanfordcpplib::getPlatform()->gline_constructor(
this, p0.getX(), p0.getY(), p1.getX(), p1.getY());
x = p0.getX();
y = p0.getY();
dx = p1.getX() - p0.getX();
dy = p1.getY() - p1.getY();
}
GPoint adjacentGPoint(GPoint start, Direction dir) {
switch (dir) {
case NORTH: return GPoint(start.getX(), start.getY() - 1);
case EAST: return GPoint(start.getX() + 1, start.getY());
case SOUTH: return GPoint(start.getX(), start.getY() + 1);
case WEST: return GPoint(start.getX() - 1, start.getY());
}
return start;
}
void drawPathfinderNode(GPoint center, string color, string label) {
setColor(color);
fillCircle(center.getX(), center.getY(), NODE_RADIUS);
if (!label.empty()) {
setFont(LABEL_FONT);
drawString(label, center.getX() + NODE_RADIUS + 2,
center.getY() + 5);
}
}
/*
* Function: drawBranch
* Usage: drawBranch(gw, branchStart, GPoint(width*(xMult-.15), height*(yMult-.15)), BRANCH_THICKNESS);
* --------------------------
* Draws branches that continue and branch of probabilistically.
*/
void drawBranch(GWindow gw, GPoint start, GPoint finish, double width){
GPolygon *branch = branchPolygon(start, finish, width);
branch->setFilled(true);
branch->setColor(4270639);
gw.add(branch);
Vector<GPoint> points = branch->getVertices();
start = points[points.size()/4];
double endX = randomReal(start.getX()*(1-TREE_DEFORMATION), start.getX()*(1+TREE_DEFORMATION));
double endY = randomReal(1+TREE_DEFORMATION, 1+2*TREE_DEFORMATION)*(finish.getY()-start.getY())+start.getY();
if((endY-finish.getY())<-3){
drawBranch(gw, start,GPoint(endX, endY),width/2);
}
}
/*
* Function: drawTrunk
* Usage: drawTrunk(gw, branchStart);;
* --------------------------
* Draws a curvy looking trunk structure on the GWindow.
*/
void drawTrunk(GWindow gw, GPoint start){
GPoint finish = GPoint(start.getX(), height);
GPolygon * trunk = trunkPolygon(start, finish, BRANCH_THICKNESS);
trunk->setFilled(true);
trunk->setColor(4270639);
gw.add(trunk);
}
// JL added code to handle transformed case
bool GPolygon::contains(double x, double y) const {
int crossings = 0;
int n = vertices.size();
if (n < 2) return false;
if (vertices[0] == vertices[n - 1]) n--;
x = x - getX(); // BUGFIX (JL) - must translate by anchor point
y = y - getY();
double x0 = vertices[0].getX();
double y0 = vertices[0].getY();
for (int i = 1; i <= n; i++) {
double x1 = vertices[i % n].getX();
double y1 = vertices[i % n].getY();
if (transformed) {
GPoint pt = matrix.image(x1, y1);
x1 = pt.getX();
y1 = pt.getY();
}
if ((y0 > y) != (y1 > y) && x - x0 < (x1 - x0) * (y - y0) / (y1 - y0)) {
crossings++;
}
x0 = x1;
y0 = y1;
}
return (crossings % 2 == 1);
}
// added by JL
bool GImage::contains(double x, double y) const {
GPoint p = matrix.preimage(x - this->x, y - this->y);
double xx = p.getX();
double yy = p.getY();
return 0 < xx && xx <= width
&& 0 < yy && yy <= height;
}
/*
* Function: randomClosePoint
* Usage: GPoint A = randomClosePoint(triangle[0], triangle[1], order);
* --------------------------
* Given two points, this algorithm finds a point near their midpoint, but displaced by a random amount.
*/
GPoint randomClosePoint(GPoint a, GPoint b, int order){
/* With the folded triangle algorithm, you want to return the same randomClosePoint every time.
* This is basically a checksum so that the algorithm does so, but can maintain a high degree of randomness,
* which setting the same random seed over and over again won't do.
*/
double key = a.getX()+a.getY()+b.getX()+b.getY();
if(closePoints.containsKey(key)){
return closePoints[key];
}
double xAve = (a.getX()+b.getX())/2;
double yAve = (a.getY()+b.getY())/2;
double deform = TERRAIN_DEFORMATION/exp(TERRAIN_ORDER-order);
double x = randomReal((1-deform)*xAve, (1+deform)*xAve);
double y = randomReal((1-deform)*yAve, (1+deform)*yAve);
closePoints.put(key, GPoint(x,y));
return GPoint(x, y);
}
void drawTriangle_by_center(const GPoint& center, const double& len) {
double center_x = center.getX();
double center_y = center.getY();
GPoint a(center_x-len/2, center_y-SQRT3/6*len);
GPoint b(center_x+len/2, center_y-SQRT3/6*len);
GPoint c(center_x, center_y+SQRT3/3*len);
drawTriangle(a, b, c);
}
/* Construct a new IComboBox from the passed in values.
* constructor does not do any parameter checking at this time.
*
* PARAMS
* location - the top left corner of the box
* size - the size in the X, Y and Z directions
* paneColor - the color of the pane
*/
IComboBox::IComboBox(GPoint location, GPoint size, GColor paneColor, int itemNumber)
{
this->location = location;
this->size = size;
this->paneColor = paneColor;
line_max = itemNumber;
if (line_max < 5)
line_max = 5;
//this->size.setY(line_max * 4);
if (CHAR_CNT(size.getX()) < 5) {
this->size.setX(5 * CHAR_WIDTH + OVERHEAD);
}
char_max = CHAR_CNT(this->size.getX());
item_cnt = 0;
head = NULL;
top = head;
next_idx = 0;
Text = (char*)malloc(sizeof (char) * 2 + 1);
Text = "";
TextLongName = (char*)malloc(sizeof(char) * 2 + 1);
TextLongName = "";
//Set ListBox drawing variables
ListBoxLocation = GPoint(location.getX(), location.getY() - size.getY() - 0.5, location.getZ());
ListBoxSize = GPoint(size.getX() - 0.5, itemNumber * 4, size.getZ());
//Set external flags to default
CloseList = false;
OpenList = false;
TitleChange = false;
FocusLock = false;
//Set animation flags
Animate = true;
aa = 0.0;
dohighlight = false;
highlight = 0;
//Set reading flags
ReRead = false;
Items = NULL;
}
// JL added
bool GLabel::contains(double x, double y) const {
x -= this->x;
y -= this->y;
if (transformed) {
GPoint pt = matrix.preimage(x, y);
x = pt.getX();
y = pt.getY();
}
return 0 <= x && x <= width && -ascent <= y && y <= -ascent + height;
}
bool GOval::contains(double x, double y) const {
GPoint p = matrix.preimage(x - this->x, y - this->y);
double xx = p.getX();
double yy = p.getY();
double rx = width / 2;
double ry = height / 2;
if (rx == 0 || ry == 0) return false;
double dx = xx - rx;
double dy = yy - ry;
return (dx * dx) / (rx * rx) + (dy * dy) / (ry * ry) <= 1.0;
}
/*
* Function: drawLightning
* Usage: if(lightning->isSelected()) drawLightning(gw, GPoint(width*randomReal(.2, .8), 0), GPoint(width*randomReal(.2, .8), height));
* --------------------------
* Adds a lightning shaped polygon to the screen that branches off probabilistically.
*/
void drawLightning(GWindow gw, GPoint start, GPoint end){
GPolygon *lightning = lightningPolygon(start, end);
lightning->setFilled(true);
lightning->setColor(LIGHTNING_OUTER_COLOR);
lightning->setFillColor(LIGHTNING_INNER_COLOR);
gw.add(lightning);
if(randomChance(.7)){
Vector<GPoint> points = lightning->getVertices();
start = points[points.size()/4];
drawLightning(gw, start,GPoint(start.getX(), height));
}
}
// JL rewrote to include transformed case in front end
GRectangle GLine::getBounds() const {
double tdx = dx;
double tdy = dy;
if (transformed) {
GPoint pt = matrix.image(dx, dy);
tdx = pt.getX();
tdy = pt.getY();
}
double x0 = (tdx < 0) ? x + tdx : x;
double y0 = (tdy < 0) ? y + tdy : y;
return GRectangle(x0, y0, abs(tdx), abs(tdy));
}
// JL rewrote to handle transformed case
bool GCompound::contains(double x, double y) const {
x -= this->x;
y -= this->y;
if (transformed) {
GPoint pt = matrix.preimage(x, y);
x = pt.getX();
y = pt.getY();
}
for (int i = 0; i < contents.size(); i++) {
if (contents.get(i)->contains(x, y)) return true;
}
return false;
}
void drawTree(double x, double y, double r, double theta, int depth) {
if (depth < MAX_DEPTH) {
double growth = randomReal(0.1, 0.4);
setColor(TREE_COLORS[depth]);
GPoint branchPt = drawPolarLine(x, y, r * growth, theta);
int numChildren = randomInteger(2, 8);
for (int i = 0; i < numChildren; i++) {
double thetaPrime = theta + randomReal(-45, +45);
drawTree(branchPt.getX(), branchPt.getY(), (1.0 - growth) * r, thetaPrime, depth + 1);
}
}
}
void drawSierpinski(const GPoint& center, const double& len, const int& order) {
drawTriangle_by_center(center, len);
int new_order = order-1;
if (new_order > 0) {
double center_x = center.getX();
double center_y = center.getY();
GPoint center_a(center_x-len/2, center_y+SQRT3/6*len);
GPoint center_b(center_x+len/2, center_y+SQRT3/6*len);
GPoint center_c(center_x, center_y-SQRT3/3*len);
drawSierpinski(center_a, len/2, new_order);
drawSierpinski(center_b, len/2, new_order);
drawSierpinski(center_c, len/2, new_order);
}
}
void drawSierpinkiTriangle(GPoint & top,int edge,int order,GWindow & gw) {
int triangleHeight = (int)sqrt(pow((double)edge,2) - pow((double)edge/2,2));
GPoint ptA = top;
GPoint ptB((top.getX() - (triangleHeight/2)),(top.getY()+triangleHeight));
GPoint ptC((top.getX() + (triangleHeight/2)),(top.getY()+triangleHeight));
gw.drawLine(ptA,ptB);
gw.drawLine(ptB,ptC);
gw.drawLine(ptC,ptA);
if(order != 0) {
order -= 1;
edge = edge / 2;
if(edge != 0) {
triangleHeight = triangleHeight / 2;
GPoint ptAb = top;
GPoint ptBb((top.getX()-(triangleHeight/2)),(top.getY()+triangleHeight));
GPoint ptCb((top.getX() + (triangleHeight / 2)), (top.getY() + triangleHeight));
drawSierpinkiTriangle(ptAb, edge, order, gw);
drawSierpinkiTriangle(ptBb, edge, order, gw);
drawSierpinkiTriangle(ptCb, edge, order, gw);
}
}
}
// Rewritten by JL to handle transformed case and take corners into account
bool GRoundRect::contains(double x, double y) const {
GPoint p = matrix.preimage(x - this->x, y - this->y);
double xx = p.getX();
double yy = p.getY();
if (xx < 0 || xx > width || yy < 0 || yy > height)
return false;
// If corner diameter is too big, the largest sensible value is used by Java back end.
double a = std::min(corner, width) / 2;
double b = std::min(corner, height) / 2;
// Get distances from nearest edges of bounding rectangle
double dx = std::min(xx, width - xx);
double dy = std::min(yy, height - yy);
if (dx > a || dy > b)
return true; // in "central cross" of rounded rect
return (dx - a)*(dx - a)/(a*a) + (dy - b)*(dy - b)/(b*b) <= 1;
}
// JL rewrote to include transformed case in front end
bool GLine::contains(double x, double y) const {
double x0 = getX();
double y0 = getY();
double x1 = x0 + dx;
double y1 = y0 + dy;
if (transformed) {
GPoint pt = matrix.image(dx, dy);
x1 = x0 + pt.getX();
y1 = y0 + pt.getY();
}
double tSquared = LINE_TOLERANCE * LINE_TOLERANCE;
if (dsq(x, y, x0, y0) < tSquared) return true;
if (dsq(x, y, x1, y1) < tSquared) return true;
if (x < min(x0, x1) - LINE_TOLERANCE) return false;
if (x > max(x0, x1) + LINE_TOLERANCE) return false;
if (y < min(y0, y1) - LINE_TOLERANCE) return false;
if (y > max(y0, y1) + LINE_TOLERANCE) return false;
if ((float) (x0 - x1) == 0 && (float) (y0 - y1) == 0) return false;
double u = ((x - x0) * (x1 - x0) + (y - y0) * (y1 - y0))
/ dsq(x0, y0, x1, y1);
return dsq(x, y, x0 + u * (x1 - x0), y0 + u * (y1 - y0)) < tSquared;
}
// JL added code to handle transformed case
GRectangle GPolygon::getBounds() const {
double xMin = 0;
double yMin = 0;
double xMax = 0;
double yMax = 0;
double x0 = getX();
double y0 = getY();
for (int i = 0; i < vertices.size(); i++) {
double x = vertices[i].getX();
double y = vertices[i].getY();
if (transformed) {
GPoint pt = matrix.image(x, y);
x = pt.getX();
y = pt.getY();
}
if (i == 0 || x < xMin) xMin = x;
if (i == 0 || y < yMin) yMin = y;
if (i == 0 || x > xMax) xMax = x;
if (i == 0 || y > yMax) yMax = y;
}
return GRectangle(xMin + x0, yMin + y0, xMax - xMin, yMax - yMin); // BUGFIX (JL): Must translate by x0, y0.
}
// This is the core function to solve queen problem
// queen_to_find is the number of queens to be find.
bool solve(Grid<bool> &ChessBoard, GPoint start, int queen_to_find)
{
if(queen_to_find == 0)
return true;
int i,j;
int board_size = ChessBoard.numRows();
int start_x = start.getX();
int start_y = start.getY();
ChessBoard.set(start_x, start_y, true);
display_ChessBoard(ChessBoard);
Direction dirs[4] = {NORTH, EAST,SOUTH, WEST};
for(int i = 0; i < 4; i++)
{
GPoint adjPoint = adjacentGPoint(start, dirs[i]);
if(!can_be_placed(ChessBoard, adjPoint))
continue;
if(solve(ChessBoard, adjPoint, queen_to_find - 1 ))
return true;
}
ChessBoard.set(start_x, start_y, false);
return false;
}
// JL moved computation for transformed case into front end here
bool GArc::contains(double x, double y) const {
if (transformed) {
GPoint pt = matrix.preimage(x - this->x, y - this->y);
x = this->x + pt.getX();
y = this->y + pt.getY();
}
double rx = frameWidth / 2;
double ry = frameHeight / 2;
if (rx == 0 || ry == 0) return false;
double dx = x - (this->x + rx);
double dy = y - (this->y + ry);
double r = (dx * dx) / (rx * rx) + (dy * dy) / (ry * ry);
if (fillFlag) {
if (r > 1.0) return false;
} else {
double t = ARC_TOLERANCE / ((rx + ry) / 2);
if (abs(1.0 - r) > t) return false;
}
// BUGFIX (JL): must scale by ry, rx. In the case where frameWidth != frameHeight,
// the "angles" used in the Java back end are not true angles, but instead are scaled
// so that the 45-degree ray passes through the corner of the bounding box.
return containsAngle(atan2(-dy/ry, dx/rx) * 180 / PI);
}
bool GObject::contains(const GPoint& pt) const {
return contains(pt.getX(), pt.getY());
}
void GObject::setLocation(const GPoint& pt) {
setLocation(pt.getX(), pt.getY());
}
bool GRectangle::contains(GPoint pt) const {
return contains(pt.getX(), pt.getY());
}
double vectorAngle(const GPoint & pt) {
return vectorAngle(pt.getX(), pt.getY());
}
double vectorDistance(const GPoint & pt) {
return vectorDistance(pt.getX(), pt.getY());
}
