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CLASSES.CPP
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CLASSES.CPP
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#include <graphics.h>
#include <math.h>
#include <stdio.h>
#include <string.h>
#include "graphpro.h"
extern unsigned char frcolor, bkcolor;
extern ld U1, V1, U2, V2; // user window
extern int X1, Y1, X2, Y2; // monitor display
extern int resmaxx, resmaxy, pos, userfont;
static TLine *p_Line; // it can't be used in other files
static TEllipse *p_Ellipse; // it can't be used in other files
static TPolygon *p_Polygon; // it can't be used in other files
boolean TBase::marked = false;
// member functions of the class TBase ...
boolean TBase::check_in(const int& mousex, const int& mousey) // checks if the mouse is in the limit rectangle
{
int x1, y1, x2, y2;
usertodevice(limitx1, limity1, x1, y1);
usertodevice(limitx2, limity2, x2, y2);
if (x1 <= mousex && y1 <= mousey && x2 >= mousex && y2 >= mousey)
{
return(true);
}
return(false);
}
void TBase::select_object(void)
{
int step;
int x1, y1, x2, y2;
step = floor(2.0*(resmaxx + 1)/640 + 0.5);
usertodevice(limitx1, limity1, x1, y1);
usertodevice(limitx2, limity2, x2, y2);
selected = true;
marked = true;
setwritemode(XOR_PUT);
Block1(x1 - step, y1 - step, x1 + step, y1 + step, 15);
Block1((x2 + x1)/2 - step, y1 - step, (x2 + x1)/2 + step, y1 + step, 15);
Block1(x2 - step, y1 - step, x2 + step, y1 + step, 15);
Block1(x1 - step, (y2 + y1)/2 - step, x1 + step, (y2 + y1)/2 + step, 15);
Block1(x2 - step, (y2 + y1)/2 - step, x2 + step, (y2 + y1)/2 + step, 15);
Block1(x1 - step, y2 - step, x1 + step, y2 + step, 15);
Block1((x2 + x1)/2 - step, y2 - step, (x2 + x1)/2 + step, y2 + step, 15);
Block1(x2 - step, y2 - step, x2 + step, y2 + step, 15);
} // End of function select_object
void TBase::unselect_object(void)
{
int step;
step = floor(2.0*(resmaxx + 1)/640 + 0.5);
int x1, y1, x2, y2;
usertodevice(limitx1, limity1, x1, y1);
usertodevice(limitx2, limity2, x2, y2);
selected = false;
marked = false;
setwritemode(XOR_PUT);
Block1(x2 - step, y2 - step, x2 + step, y2 + step, 15);
Block1((x2 + x1)/2 - step, y2 - step, (x2 + x1)/2 + step, y2 + step, 15);
Block1(x1 - step, y2 - step, x1 + step, y2 + step, 15);
Block1(x2 - step, (y2 + y1)/2 - step, x2 + step, (y2 + y1)/2 + step, 15);
Block1(x1 - step, (y2 + y1)/2 - step, x1 + step, (y2 + y1)/2 + step, 15);
Block1(x2 - step, y1 - step, x2 + step, y1 + step, 15);
Block1((x2 + x1)/2 - step, y1 - step, (x2 + x1)/2 + step, y1 + step, 15);
Block1(x1 - step, y1 - step, x1 + step, y1 + step, 15);
}
boolean TBase::check_in_center(const int& mousex, const int& mousey)
{
int step;
step = floor(3.0*(resmaxx + 1)/640 + 0.5);
int x, y;
usertodevice(centerx, centery, x, y);
if (x - step <= mousex && y - step <= mousey && x + step >= mousex && y + step >= mousey)
return(true);
else
return(false);
}
boolean TBase::check_for_rotation(const int& mousex, const int& mousey)
{
int step;
step = floor(3.0*(resmaxx + 1)/640 + 0.5);
int x1, y1, x2, y2;
usertodevice(limitx1, limity1, x1, y1);
usertodevice(limitx2, limity2, x2, y2);
if (x1 - step <= mousex && y1 - step <= mousey && x1 + step >= mousex && y1 + step >= mousey
||
x1 - step <= mousex && y2 - step <= mousey && x1 + step >= mousex && y2 + step >= mousey)
return(true);
return(false);
}
boolean TBase::check_for_dilatation(const int& mousex, const int& mousey, Tdirection& direction)
{
int step;
step = floor(3.0*(resmaxx + 1)/640 + 0.5);
int x1, y1, x2, y2;
usertodevice(limitx1, limity1, x1, y1);
usertodevice(limitx2, limity2, x2, y2);
if (x1 - step <= mousex && (y2 + y1)/2 - step <= mousey && x1 + step >= mousex && (y2 + y1)/2 + step >= mousey)
{
direction = west;
return(true);
}
if (x2 - step <= mousex && (y2 + y1)/2 - step <= mousey && x2 + step >= mousex && (y2 + y1)/2 + step >= mousey)
{
direction = east;
return(true);
}
if ((x2 + x1)/2 - step <= mousex && y1 - step <= mousey && (x2 + x1)/2 + step >= mousex && y1 + step >= mousey)
{
direction = north;
return(true);
}
if ((x2 + x1)/2 - step <= mousex && y2 - step <= mousey && (x2 + x1)/2 + step >= mousex && y2 + step >= mousey)
{
direction = south;
return(true);
}
return(false);
}
void TBase::select_for_rot(void) // select for rotation
{
int step;
step = floor(2.0*(resmaxx + 1)/640 + 0.5);
int x1, y1, x2, y2, x, y;
usertodevice(limitx1, limity1, x1, y1);
usertodevice(limitx2, limity2, x2, y2);
usertodevice(centerx, centery, x, y);
setwritemode(XOR_PUT);
setlinestyle(DOTTED_LINE, 0, NORM_WIDTH); // 0 means not user defined
setcolor(15);
line(x1, y1, x2, y1);
line(x2, y1, x2, y2);
line(x2, y2, x1, y2);
line(x1, y2, x1, y1);
Block1(x - step, y - step, x + step, y + step, 15);
}
void TBase::unselect_from_rot(void)
{
int step;
step = floor(2.0*(resmaxx + 1)/640 + 0.5);
int x1, y1, x2, y2, x, y;
usertodevice(limitx1, limity1, x1, y1);
usertodevice(limitx2, limity2, x2, y2);
usertodevice(centerx, centery, x, y);
setwritemode(XOR_PUT);
setlinestyle(DOTTED_LINE, 0, NORM_WIDTH); // 0 means not user defined
setcolor(15);
Block1(x - step, y - step, x + step, y + step, 15);
line(x1, y2, x1, y1);
line(x2, y2, x1, y2);
line(x2, y1, x2, y2);
line(x1, y1, x2, y1);
}
void TBase::move_center(void) // non virtual
{
char left, right;
int mousex, mousey, oldx, oldy;
int step;
step = floor(2.0*(resmaxx + 1)/640 + 0.5);
int x, y;
usertodevice(centerx, centery, x, y);
GetMouseButtons(&left, &right, &mousex, &mousey);
oldx = mousex; oldy = mousey;
SetMouseBound(0, 0, pos - 2, resmaxy);
setwritemode(XOR_PUT);
while (left)
{
GetMouseButtons(&left, &right, &mousex, &mousey);
if (oldx != mousex || oldy != mousey)
{
// deleting the old block
Block1(x - step, y - step, x + step, y + step, 15);
x += mousex - oldx;
y += mousey - oldy;
// drawing the new block
Block1(x - step, y - step, x + step, y + step, 15);
draw_uvxy();
oldx = mousex; oldy = mousey;
} // end if
} // End While
devicetouser(centerx, centery, x, y);
SetMouseBound(0, 0, resmaxx, resmaxy);
}
// member functions of the class TLine ...
TLine::TLine(const int& x1, const int& y1) // first constructor
{
char LeftYN, RightYN;
int mousex, mousey, x2, y2;
x2 = x1; y2 = y1;
HideMouse();
color = frcolor;
fillcolor = 0;
GetMouseButtons(&LeftYN, &RightYN, &mousex, &mousey);
if (LeftYN == 1) BLine(x1, y1, x2, y2, color);
draw_uvxy();
setwritemode(XOR_PUT);
SetMouseBound(0, 0, pos - 2, resmaxy);
while (LeftYN == 1)
{
GetMouseButtons(&LeftYN, &RightYN, &mousex, &mousey);
if (x2 != mousex || y2 != mousey)
{
BLine(x1, y1, x2, y2, color); // delete the old line
BLine(x1, y1, mousex, mousey, color); // draw the new line
draw_uvxy();
x2 = mousex, y2 = mousey;
} //End if
} // end while (LeftYN == 1)
setwritemode(COPY_PUT);
BLine(x1, y1, x2, y2, color); // draw the new line
devicetouser(point1[0], point1[1], x1, y1);
point1[2] = 1; // homogenious coordinates
devicetouser(point2[0], point2[1], x2, y2);
point2[2] = 1; // homogenios coordinates
limitx1 = min(point1[0], point2[0]);
limity1 = max(point1[1], point2[1]);
limitx2 = max(point1[0], point2[0]);
limity2 = min(point1[1], point2[1]);
centerx = (limitx1 + limitx2)/2;
centery = (limity1 + limity2)/2;
selected = false;
marked = false;
filled = false;
SetMouseBound(0, 0, resmaxx, resmaxy);
ShowMouse();
} // End of the first constructor
TLine::TLine(FILE* loadfile) // second constructor
{
int intbuffer; ld ldbuffer;
fscanf(loadfile, "%d", &intbuffer);
color = intbuffer;
fscanf(loadfile, "%d", &intbuffer);
fillcolor = intbuffer;
fscanf(loadfile, "%d", &intbuffer);
filled = (boolean) intbuffer;
fscanf(loadfile, "%Le", &ldbuffer);
point1[0] = ldbuffer;
fscanf(loadfile, "%Le", &ldbuffer);
point1[1] = ldbuffer;
fscanf(loadfile, "%Le", &ldbuffer);
point2[0] = ldbuffer;
fscanf(loadfile, "%Le", &ldbuffer);
point2[1] = ldbuffer;
point1[2] = point2[2] = 1;
limitx1 = min(point1[0], point2[0]);
limity1 = max(point1[1], point2[1]);
limitx2 = max(point1[0], point2[0]);
limity2 = min(point1[1], point2[1]);
centerx = (limitx1 + limitx2)/2;
centery = (limity1 + limity2)/2;
selected = false;
marked = false;
fgetc(loadfile);
fgetc(loadfile);
if (!feof(loadfile)) fseek(loadfile, -1L, SEEK_CUR);
}
void TLine::draw_object(void)
{
userline(point1[0], point1[1], point2[0], point2[1], color);
draw_uvxy();
}
void TLine::translate_object(vector p)
{
point1[0] += p[0];
point1[1] += p[1];
point2[0] += p[0];
point2[1] += p[1];
point1[2] = 1; // homogenious coordinates
point2[2] = 1; // homogenious coordinates
limitx1 += p[0];
limity1 += p[1];
limitx2 += p[0];
limity2 += p[1];
centerx += p[0];
centery += p[1];
}
void TLine::rotate_object(matrix m, const ld& usercenterx, const ld& usercentery, const ld& angle)
{
vector dummy1, dummy2;
dummy1[0] = point1[0] - usercenterx;
dummy1[1] = point1[1] - usercentery;
dummy1[2] = 1; // homogenious coordinates
dummy2[0] = point2[0] - usercenterx;
dummy2[1] = point2[1] - usercentery;
dummy2[2] = 1;
mul_matrix_vector(dummy1, m);
mul_matrix_vector(dummy2, m);
point1[0] = dummy1[0] + usercenterx;
point1[1] = dummy1[1] + usercentery;
point2[0] = dummy2[0] + usercenterx;
point2[1] = dummy2[1] + usercentery;
point1[2] = angle;
point1[2] = 1; // homogenious coordinates
point2[2] = 1; // homogenious coordinates
limitx1 = min(point1[0], point2[0]);
limity1 = max(point1[1], point2[1]);
limitx2 = max(point1[0], point2[0]);
limity2 = min(point1[1], point2[1]);
}
void TLine::dilatate_object(vector p, const Tdirection& direction)
{
switch (direction)
{
case east :
if (point1[0] - point2[0] < 0)
{
point2[0] += p[0];
limitx2 += p[0];
}
else
if (point1[0] - point2[0] > 0)
{
point1[0] += p[0];
limitx2 += p[0];
}
else break;
break;
case west :
if (point1[0] - point2[0] < 0)
{
point1[0] += p[0];
limitx1 += p[0];
}
else
if (point1[0] - point2[0] > 0)
{
point2[0] += p[0];
limitx1 += p[0];
}
else break;
break;
case north :
if (point1[1] - point2[1] > 0)
{
point1[1] += p[1];
limity1 += p[1];
}
else
if (point1[1] - point2[1] < 0)
{
point2[1] += p[1];
limity1 += p[1];
}
else break;
break;
case south :
if (point1[1] - point2[1] > 0)
{
point2[1] += p[1];
limity2 += p[1];
}
else
if (point1[1] - point2[1] < 0)
{
point1[1] += p[1];
limity2 += p[1];
}
else break;
} // End switch
centerx = (limitx1 + limitx2)/2;
centery = (limity1 + limity2)/2;
}
void TLine::fill_object(void)
{
filled = true;
}
void TLine::save_object(FILE* savefile)
{
fseek(savefile, 0L, SEEK_END);
fprintf(savefile, "LINE ");
fprintf(savefile, "%u ", color);
fprintf(savefile, "%u ", fillcolor);
fprintf(savefile, "%d ", filled);
fprintf(savefile, "%.17Le ", point1[0]);
fprintf(savefile, "%.17Le ", point1[1]);
fprintf(savefile, "%.17Le ", point2[0]);
fprintf(savefile, "%.17Le\n", point2[1]);
}
kind TLine::kind_of_object(void)
{
return (LINE);
}
//member functions of the class TPolygon
TPolygon::TPolygon(const int& x1, const int& y1, const kind& type) // first constructor
{
char LeftYN, RightYN;
int mousex = x1, mousey = y1;
int oldx = mousex, oldy = mousey;
HideMouse();
color = frcolor;
fillcolor = 0;
SetMouseBound(0, 0, pos - 2, resmaxy);
setwritemode(XOR_PUT);
switch (type)
{
int recx1, recy1, recx2, recy2;
case RECTANGLE :
GetMouseButtons(&LeftYN, &RightYN, &mousex, &mousey);
if (mousex - x1 >= 0 && mousey - y1 >= 0) // down right
{
EnterRectangle1(x1, y1, mousex, mousey, color);
recx1 = x1; recy1 = y1; recx2 = mousex; recy2 = mousey;
}
if (mousex - x1 >= 0 && mousey - y1 < 0) // up right
{
EnterRectangle1(x1, mousey, mousex, y1, color);
recx1 = x1; recy1 = mousey; recx2 = mousex; recy2 = y1;
}
if (mousex - x1 < 0 && mousey - y1 < 0) // up left
{
EnterRectangle1(mousex, mousey, x1, y1, color);
recx1 = mousex; recy1 = mousey; recx2 = x1; recy2 = y1;
}
if (mousex - x1 < 0 && mousey - y1 >= 0) // down left
{
EnterRectangle1(mousex, y1, x1, mousey, color);
recx1 = mousex; recy1 = y1; recx2 = x1; recy2 = mousey;
}
while (LeftYN)
{
GetMouseButtons(&LeftYN, &RightYN, &mousex, &mousey);
if (oldx != mousex || oldy != mousey)
{
if (mousex - x1 >= 0 && mousey - y1 >= 0) // down right
{
EnterRectangle1(x1, y1, oldx, oldy, color); // delete
EnterRectangle1(x1, y1, mousex, mousey, color); // draw
recx1 = x1; recy1 = y1; recx2 = mousex; recy2 = mousey;
}
if (mousex - x1 >= 0 && mousey - y1 < 0) // up right
{
EnterRectangle1(x1, oldy, oldx, y1, color); // delete
EnterRectangle1(x1, mousey, mousex, y1, color); // draw
recx1 = x1; recy1 = mousey; recx2 = mousex; recy2 = y1;
}
if (mousex - x1 < 0 && mousey - y1 < 0) // up left
{
EnterRectangle1(oldx, oldy, x1, y1, color); // delete
EnterRectangle1(mousex, mousey, x1, y1, color); // draw
recx1 = mousex; recy1 = mousey; recx2 = x1; recy2 = y1;
}
if (mousex - x1 < 0 && mousey - y1 >= 0) // down left
{
EnterRectangle1(oldx, y1, x1, oldy, color); // delete
EnterRectangle1(mousex, y1, x1, mousey, color); // draw
recx1 = mousex; recy1 = y1; recx2 = x1; recy2 = mousey;
}
draw_uvxy();
oldx = mousex; oldy = mousey;
} //End if (oldx != mousex || oldy != mousey)
} // end while (left)
setwritemode(COPY_PUT);
EnterRectangle1(recx1, recy1, recx2, recy2, color);
TPoints *p_currentpoint;
ld userrecx1, userrecy1, userrecx2, userrecy2;
devicetouser(userrecx1, userrecy1, recx1, recy1);
devicetouser(userrecx2, userrecy2, recx2, recy2);
p_pointlist = new TPoints;
p_currentpoint = p_pointlist;
p_currentpoint -> point[0] = userrecx1;
p_currentpoint -> point[1] = userrecy1;
p_currentpoint -> point[2] = 1;
p_currentpoint -> p_next = new TPoints;
p_currentpoint = p_currentpoint -> p_next;
p_currentpoint -> point[0] = userrecx2;
p_currentpoint -> point[1] = userrecy1;
p_currentpoint -> point[2] = 1;
p_currentpoint -> p_next = new TPoints;
p_currentpoint = p_currentpoint -> p_next;
p_currentpoint -> point[0] = userrecx2;
p_currentpoint -> point[1] = userrecy2;
p_currentpoint -> point[2] = 1;
p_currentpoint -> p_next = new TPoints;
p_currentpoint = p_currentpoint -> p_next;
p_currentpoint -> point[0] = userrecx1;
p_currentpoint -> point[1] = userrecy2;
p_currentpoint -> point[2] = 1;
p_currentpoint -> p_next = NULL;
MakeRebraList();
break; // break case RECTANGLE
case SQUARE :
int length;
GetMouseButtons(&LeftYN, &RightYN, &mousex, &mousey);
if (mousex - x1 >= 0 && mousey - y1 >= 0) // down right
{
length = max(mousex - x1, mousey - y1);
EnterRectangle1(x1, y1, x1 + length, y1 + length, color);
recx1 = x1; recy1 = y1; recx2 = x1 + length; recy2 = y1 + length;
}
if (mousex - x1 >= 0 && mousey - y1 < 0) // up right
{
length = max(mousex - x1, y1 - mousey);
EnterRectangle1(x1, y1 - length, x1 + length, y1, color);
recx1 = x1; recy1 = y1 - length; recx2 = x1 + length; recy2 = y1;
}
if (mousex - x1 < 0 && mousey - y1 < 0) // up left
{
length = max(x1 - mousex, y1 - mousey);
EnterRectangle1(x1 - length, y1 - length, x1, y1, color);
recx1 = x1 - length; recy1 = y1 - length; recx2 = x1; recy2 = y1;
}
if (mousex - x1 < 0 && mousey - y1 >= 0) // down left
{
length = max(x1 - mousex, mousey - y1);
EnterRectangle1(x1 - length, y1, x1, y1 + length, color);
recx1 = x1 - length; recy1 = y1; recx2 = x1; recy2 = y1 + length;
}
while (RightYN)
{
GetMouseButtons(&LeftYN, &RightYN, &mousex, &mousey);
if (oldx != mousex || oldy != mousey)
{
if (mousex - x1 >= 0 && mousey - y1 >= 0) // down right
{
EnterRectangle1(recx1, recy1, recx2, recy2, color); // delete
length = max(mousex - x1, mousey - y1);
EnterRectangle1(x1, y1, x1 + length, y1 + length, color); // draw
recx1 = x1; recy1 = y1; recx2 = x1 + length; recy2 = y1 + length;
}
if (mousex - x1 >= 0 && mousey - y1 < 0) // up right
{
EnterRectangle1(recx1, recy1, recx2, recy2, color); // delete
length = max(mousex - x1, y1 - mousey);
EnterRectangle1(x1, y1 - length, x1 + length, y1, color);
recx1 = x1; recy1 = y1 - length; recx2 = x1 + length; recy2 = y1;
}
if (mousex - x1 < 0 && mousey - y1 < 0) // up left
{
EnterRectangle1(recx1, recy1, recx2, recy2, color); // delete
length = max(x1 - mousex, y1 - mousey);
EnterRectangle1(x1 - length, y1 - length, x1, y1, color);
recx1 = x1 - length; recy1 = y1 - length; recx2 = x1; recy2 = y1;
}
if (mousex - x1 < 0 && mousey - y1 >= 0) // down left
{
EnterRectangle1(recx1, recy1, recx2, recy2, color); // delete
length = max(x1 - mousex, mousey - y1);
EnterRectangle1(x1 - length, y1, x1, y1 + length, color);
recx1 = x1 - length; recy1 = y1; recx2 = x1; recy2 = y1 + length;
}
draw_uvxy();
oldx = mousex; oldy = mousey;
} //End if (oldx != mousex || oldy != mousey)
} // end while (left)
setwritemode(COPY_PUT);
EnterRectangle1(recx1, recy1, recx2, recy2, color);
devicetouser(userrecx1, userrecy1, recx1, recy1);
devicetouser(userrecx2, userrecy2, recx2, recy2);
p_pointlist = new TPoints;
p_currentpoint = p_pointlist;
p_currentpoint -> point[0] = userrecx1;
p_currentpoint -> point[1] = userrecy1;
p_currentpoint -> point[2] = 1;
p_currentpoint -> p_next = new TPoints;
p_currentpoint = p_currentpoint -> p_next;
p_currentpoint -> point[0] = userrecx2;
p_currentpoint -> point[1] = userrecy1;
p_currentpoint -> point[2] = 1;
p_currentpoint -> p_next = new TPoints;
p_currentpoint = p_currentpoint -> p_next;
p_currentpoint -> point[0] = userrecx2;
p_currentpoint -> point[1] = userrecy2;
p_currentpoint -> point[2] = 1;
p_currentpoint -> p_next = new TPoints;
p_currentpoint = p_currentpoint -> p_next;
p_currentpoint -> point[0] = userrecx1;
p_currentpoint -> point[1] = userrecy2;
p_currentpoint -> point[2] = 1;
p_currentpoint -> p_next = NULL;
MakeRebraList();
break; // break case SQUARE
case POLY :
TPoints* p_previouspoint = NULL;
p_pointlist = new TPoints;
p_currentpoint = p_pointlist;
ld userpointx, userpointy;
int prevx1 = x1, prevy1 = y1, lines = 0;
devicetouser(userpointx, userpointy, x1, y1);
p_currentpoint -> point[0] = userpointx;
p_currentpoint -> point[1] = userpointy;
p_currentpoint -> p_next = new TPoints;
p_currentpoint = p_currentpoint -> p_next;
GetMouseButtons(&LeftYN, &RightYN, &mousex, &mousey);
while (1)
{ // At least three times have to pass by here ...
while (LeftYN) // whaiting to be released
GetMouseButtons(&LeftYN, &RightYN, &mousex, &mousey);
oldx = mousex; oldy = mousey;
setwritemode(XOR_PUT);
BLine(prevx1, prevy1, oldx, oldy, color);
while (LeftYN == 0)
{
GetMouseButtons(&LeftYN, &RightYN, &mousex, &mousey);
if (RightYN && lines >= 2) break; // break while (!LeftYN)
if (oldx != mousex || oldy != mousey)
{
BLine(prevx1, prevy1, oldx, oldy, color); // delete the old line
BLine(prevx1, prevy1, mousex, mousey, color); // draw the new line
draw_uvxy();
oldx = mousex, oldy = mousey;
} //End if
} // end while (LeftYN == 0)
if (RightYN && lines >= 2)
{
BLine(prevx1, prevy1, oldx, oldy, color); // delete the last
setwritemode(COPY_PUT);
BLine(prevx1, prevy1, x1, y1, color); // draw the last
p_previouspoint -> p_next = NULL;
break; // break the endless loop
}
lines++;
setwritemode(COPY_PUT);
BLine(prevx1, prevy1, oldx, oldy, color); // draw the new line
devicetouser(userpointx, userpointy, oldx, oldy);
p_currentpoint -> point[0] = userpointx;
p_currentpoint -> point[1] = userpointy;
p_currentpoint -> p_next = new TPoints;
p_previouspoint = p_currentpoint;
p_currentpoint = p_currentpoint -> p_next;
prevx1 = oldx, prevy1 = oldy;
} // End Endless loop :-)
MakeRebraList();
break; // break case POLY
} // End switch(type)
limitx1 = minpoint(0, p_pointlist); // 0 means we compare the X-s
limity1 = maxpoint(1, p_pointlist); // 1 means we compare the Y-s
limitx2 = maxpoint(0, p_pointlist);
limity2 = minpoint(1, p_pointlist);
centerx = (limitx1 + limitx2)/2;
centery = (limity1 + limity2)/2;
selected = false;
marked = false;
filled = false;
SetMouseBound(0, 0, resmaxx, resmaxy);
ShowMouse();
} // End of first constructor of TPolygon
TPolygon::TPolygon(FILE* loadfile) // second constructor
{
int intbuffer; ld ldbuffer;
fscanf(loadfile, "%d", &intbuffer);
color = intbuffer;
fscanf(loadfile, "%d", &intbuffer);
fillcolor = intbuffer;
fscanf(loadfile, "%d", &intbuffer);
filled = (boolean) intbuffer;
p_pointlist = new TPoints;
signed char ch = ' ';
TPoints *p_currentpoint = p_pointlist, *p_previouspoint;
while (ch == ' ')
{
fscanf(loadfile, "%Le", &ldbuffer);
p_currentpoint -> point[0] = ldbuffer;
fscanf(loadfile, "%Le", &ldbuffer);
p_currentpoint -> point[1] = ldbuffer;
p_currentpoint -> point[2] = 1;
p_currentpoint -> p_next = new TPoints;
p_previouspoint = p_currentpoint;
p_currentpoint = p_currentpoint -> p_next;
ch = fgetc(loadfile);
}
delete p_previouspoint -> p_next;
p_previouspoint -> p_next = NULL;
MakeRebraList();
limitx1 = minpoint(0, p_pointlist); // 0 means we compare the X-s
limity1 = maxpoint(1, p_pointlist); // 1 means we compare the Y-s
limitx2 = maxpoint(0, p_pointlist);
limity2 = minpoint(1, p_pointlist);
centerx = (limitx1 + limitx2)/2;
centery = (limity1 + limity2)/2;
selected = false;
marked = false;
fgetc(loadfile);
if (!feof(loadfile)) fseek(loadfile, -1L, SEEK_CUR);
}
TPolygon::~TPolygon()
{
TPoints** pp_pointlist = &p_pointlist;
while (*pp_pointlist) // the points
{
while ( (*pp_pointlist) -> p_next)
pp_pointlist = &( (*pp_pointlist) -> p_next );
delete *pp_pointlist;
*pp_pointlist = NULL;
pp_pointlist = &p_pointlist;
}
TRebra** pp_rebralist = &p_rebralist;
while (*pp_rebralist) // rebrata
{
while ( (*pp_rebralist) -> p_next)
pp_rebralist = &( (*pp_rebralist) -> p_next );
delete *pp_rebralist;
*pp_rebralist = NULL;
pp_rebralist = &p_rebralist;
}
}
void TPolygon::MakeRebraList(void)
{
TRebra* p_currentrebro;
TPoints* p_currentpoint;
p_rebralist = new TRebra;
p_currentrebro = p_rebralist;
p_currentpoint = p_pointlist;
while (p_currentpoint -> p_next)
{
p_currentrebro -> p_point1 = p_currentpoint;
p_currentrebro -> p_point2 = p_currentpoint -> p_next;
p_currentpoint = p_currentpoint -> p_next;
p_currentrebro -> p_next = new TRebra;
p_currentrebro = p_currentrebro -> p_next;
}
// now the fourth rebro ...
p_currentrebro -> p_point1 = p_currentpoint;
p_currentrebro -> p_point2 = p_pointlist;
p_currentrebro -> p_next = NULL;
}
ld TPolygon::minpoint(const int& index, TPoints* p_pointlist)
{
ld result = p_pointlist -> point[index];
TPoints *p_currentpoint = p_pointlist;
while (p_currentpoint != NULL)
{
if (result > p_currentpoint -> point[index])
result = p_currentpoint -> point[index];
p_currentpoint = p_currentpoint -> p_next;
}
return(result);
} // End of function minpoint
ld TPolygon::maxpoint(const int& index, TPoints* p_pointlist)
{
ld result = p_pointlist -> point[index];
TPoints *p_currentpoint = p_pointlist;
while (p_currentpoint != NULL)
{
if (result < p_currentpoint -> point[index])
result = p_currentpoint -> point[index];
p_currentpoint = p_currentpoint -> p_next;
}
return(result);
} // End of function maxpoint
void TPolygon::draw_object(void)
{
userpolygon(p_rebralist, color);
draw_uvxy();
}
void TPolygon::translate_object(vector p)
{
TPoints* p_currentpoint = p_pointlist;
while (p_currentpoint)
{
p_currentpoint -> point[0] += p[0];
p_currentpoint -> point[1] += p[1];
p_currentpoint = p_currentpoint -> p_next;
}
limitx1 += p[0];
limity1 += p[1];
limitx2 += p[0];
limity2 += p[1];
centerx += p[0];
centery += p[1];
}
void TPolygon::rotate_object(matrix m, const ld& usercenterx, const ld& usercentery, const ld& angle)
{
TPoints* p_currentpoint = p_pointlist;
vector dummy;
dummy[2] = angle; // for the warning
while (p_currentpoint)
{
dummy[0] = p_currentpoint -> point[0] - usercenterx;
dummy[1] = p_currentpoint -> point[1] - usercentery;
dummy[2] = 1; // hommogenious coordinates
mul_matrix_vector(dummy, m);
p_currentpoint -> point[0] = dummy[0] + usercenterx;
p_currentpoint -> point[1] = dummy[1] + usercentery;
p_currentpoint -> point[2] = 1;
p_currentpoint = p_currentpoint -> p_next;
}
limitx1 = minpoint(0, p_pointlist); // 0 means we compare the X-s
limity1 = maxpoint(1, p_pointlist); // 1 means we compare the Y-s
limitx2 = maxpoint(0, p_pointlist);
limity2 = minpoint(1, p_pointlist);
}
void TPolygon::dilatate_object(vector p, const Tdirection& direction)
{
TPoints* p_currentpoint = p_pointlist;
switch (direction)
{
case east :
while (p_currentpoint)
{
p_currentpoint -> point[0] += (p_currentpoint -> point[0] - limitx1)*p[0]/(limitx2 - limitx1);
p_currentpoint = p_currentpoint -> p_next;
}
limitx2 += p[0];
break; // break case east
case west :
while (p_currentpoint)
{
p_currentpoint -> point[0] += (limitx2 - p_currentpoint -> point[0])*p[0]/(limitx2 - limitx1);
p_currentpoint = p_currentpoint -> p_next;
}
limitx1 += p[0];
break; // break case west
case north :
while (p_currentpoint)
{
p_currentpoint -> point[1] += (p_currentpoint -> point[1] - limity2)*p[1]/(limity1 - limity2);
p_currentpoint = p_currentpoint -> p_next;
}
limity1 += p[1];
break; // break case north
case south :
while (p_currentpoint)
{
p_currentpoint -> point[1] += (limity1 - p_currentpoint -> point[1])*p[1]/(limity1 - limity2);
p_currentpoint = p_currentpoint -> p_next;
}
limity2 += p[1];
} // End Switch
centerx = (limitx1 + limitx2)/2;
centery = (limity1 + limity2)/2;
}
void TPolygon::fill_object(void)
{ // ScanLineFill algorithm
Edgepointer ps_TP[769], p_CAP = NULL; // TP = (T)tablica na (P)rebrata
Edgepointer current, previous;
int x1, x2, y, ymin, i;
filled = true;
int backup = getcolor();
setcolor(fillcolor);
setlinestyle(SOLID_LINE, 0, NORM_WIDTH); // 0 means not user defined
for (i = 0; i < 769; i++) // initialize TP
ps_TP[i] = NULL;
CreateTP(ps_TP, p_rebralist, &ymin); y = ymin;
while ( p_CAP || ps_TP[y] )
{
AppendlistsCAP(&p_CAP, ps_TP[y]);
SortEdges(&p_CAP);
current = p_CAP;
while (current)
{
x1 = ceil(current -> X);
current = current -> next;
x2 = floor(current -> X);
if (current -> X == x2) x2--;
if (x1 <= x2)
line(x1, y, x2, y);
current = current -> next;
} // End while current
y++; current = p_CAP; previous = NULL;
while (current)
{
if (current -> Ymax == y) // exclude
if (previous)
{
previous -> next = current -> next;
delete current;
current = previous -> next;
continue;
}
else
{
p_CAP = current -> next;
delete current;
current = p_CAP;
continue;
}
else
current -> X += current -> IncX;
previous = current;
current = current -> next;
} // End while current
} // End while (p_CAP || (ps_TP + y))
for (i = 0; i < 769; i++)
if (ps_TP[i])
DeleteList(&ps_TP[i]);
setcolor(backup);
} // End of function fill_object
void TPolygon::save_object(FILE* savefile)
{
TPoints* p_currentpoint = p_pointlist;
fseek(savefile, 0L, SEEK_END);
fprintf(savefile, "POLY ");
fprintf(savefile, "%u ", color);
fprintf(savefile, "%u ", fillcolor);
fprintf(savefile, "%d ", filled);
while (p_currentpoint)
{
fprintf(savefile, "%.17Le ",p_currentpoint -> point[0]);
fprintf(savefile, "%.17Le ",p_currentpoint -> point[1]);
p_currentpoint = p_currentpoint -> p_next;
}
fseek(savefile, -1L, SEEK_CUR);
fprintf(savefile, "\n");
}
kind TPolygon::kind_of_object(void)
{
return (POLY);
}
// member functons of the class TEllipse ...
TEllipse::TEllipse(const int& x1, const int& y1, const kind& type) // first constructor
{
char LeftYN, RightYN;
int mousex, mousey, oldx, oldy;
int xcenter, ycenter;
HideMouse();
color = frcolor;
fillcolor = 0;
if (type == CIRCLE)
{
int radius;
GetMouseButtons(&LeftYN, &RightYN, &mousex, &mousey);
if (mousex - x1 >= 0 && mousey - y1 >= 0) // down right
{
radius = max(mousex - x1, mousey - y1)/2;
xcenter = x1 + radius;
ycenter = y1 + radius;
}
if (mousex - x1 >= 0 && mousey - y1 < 0) // up right
{
radius = max(mousex - x1, y1 - mousey)/2;
xcenter = x1 + radius;
ycenter = y1 - radius;
}
if (mousex - x1 < 0 && mousey - y1 < 0) // up left
{
radius = max(x1 - mousex, y1 - mousey)/2;
xcenter = x1 - radius;
ycenter = y1 - radius;
}
if (mousex - x1 < 0 && mousey - y1 >= 0) // down left
{
radius = max(x1 - mousex, mousey - y1)/2;
xcenter = x1 - radius;
ycenter = y1 + radius;
}
setwritemode(XOR_PUT);
if (RightYN == 1) MyEllipse(xcenter, ycenter, radius, radius, 0.0l, color);
SetMouseBound(0, 0, pos - 2, resmaxy);
oldx = mousex, oldy = mousey;
while (RightYN == 1)
{
GetMouseButtons(&LeftYN, &RightYN, &mousex, &mousey);
if (oldx != mousex || oldy != mousey)
{
MyEllipse(xcenter, ycenter, radius, radius, 0.0l, color); // delete
if (mousex - x1 >= 0 && mousey - y1 >= 0)
{
radius = max(mousex - x1, mousey - y1)/2;
xcenter = x1 + radius;
ycenter = y1 + radius;
}
if (mousex - x1 >= 0 && mousey - y1 < 0)