void DrawList(List thelist)
{
// traverse the list from last to first.. drawing each object
NodeLink currnode;
int color;
thelist->cursor = thelist->last;
scare_mouse();
while (thelist->cursor != NULL) {
currnode = thelist->cursor;
if (currnode->Object == LINE) {
linebres(currnode->obj_data.line.p1.x,
currnode->obj_data.line.p1.y,
currnode->obj_data.line.p2.x,
currnode->obj_data.line.p2.y,
currnode->obj_data.line.color);
}
else {
if (currnode->Object == CIRCLE) {
circlebres(screen,
currnode->obj_data.circle.p1.x,
currnode->obj_data.circle.p1.y,
currnode->obj_data.circle.radius,
currnode->obj_data.circle.color);
}
else {
if (currnode->Object == POLYGON) {
color = currnode->obj_data.polygon.color;
drawpoly(currnode,color);
}
else {
if (currnode->Object == TEXT) {
textout(screen,font,currnode->obj_data.text.data,
currnode->obj_data.text.p1.x,
currnode->obj_data.text.p1.y,
currnode->obj_data.text.color);
}
}
}
}
thelist->cursor = thelist->cursor->prev; //mode cursor back a node
}
unscare_mouse();
}
void drawpoly(NodeLink currnode, int color)
{
PList polylist;
polylist = currnode->obj_data.polygon.theplist;
polylist->cursor = polylist->first;
while (polylist->cursor->next != NULL) {
linebres(polylist->cursor->ppoint.x,
polylist->cursor->ppoint.y,
polylist->cursor->next->ppoint.x,
polylist->cursor->next->ppoint.y,
color);
polylist->cursor = polylist->cursor->next;
}
linebres(polylist->last->ppoint.x,
polylist->last->ppoint.y,
polylist->first->ppoint.x,
polylist->first->ppoint.y,
color);
}
void rubberline(List thelist, int color)
{
int x1, x2, y1, y2;
int x3, y3;
Line_Type linedata;
while (!(mouse_b & 2)) { //quick addin
if (mouse_b & 1) {
x3 = x1 = mouse_x;
y3 = y1 = mouse_y;
scare_mouse();
/* draw circle while waiting for mouse release */
while (mouse_b & 1) {
x2 = mouse_x;
y2 = mouse_y;
if (x2 != x3 || y2 != y3) {
rrestore(screen);//first time through ii=0
do_line(screen,x1,y1,x2,y2, color, rsave);
x3 = x2;
y3 = y2;
}
}
rrestore(screen);
x2 = mouse_x;
y2 = mouse_y;
linebres(x1,y1,x2,y2,color);
linedata.p1.x = x1;
linedata.p1.y = y1;
linedata.p2.x = x2;
linedata.p2.y = y2;
linedata.color = color;
linedata.width = 1;
AddLine(thelist,linedata);
unscare_mouse();
}
}// end whileaddin
}
int main()
{
int x1,x2,y1,y2;
char clr;
int gd=DETECT,gm;
void linebres(int,int,int,int,int);
printf("Enter the initial coordinate points:");
scanf("%d%d",&x1,&x2);
printf("Enter the end coordinate points:");
scanf("%d%d",&y1,&y2);
printf("Choose the colour ...valuse from (0-15)");
scanf("%d",&clr);
initgraph(&gd,&gm,"");
cleardevice();
linebres(x1,y1,x2,y2,clr);
getch();
closegraph();
}
void rubberrectangle(List thelist, int color)
{
int x1, x2, y1, y2;
int x3, y3;
Poly_Type polydata;
PList polylist;
polylist = PCreateList();
while (!(mouse_b & 2)) { //quick addin
if (mouse_b & 1) {
x3 = x1 = mouse_x;
y3 = y1 = mouse_y;
scare_mouse();
/* draw box while waiting for mouse release */
while (mouse_b & 1) {
x2 = mouse_x;
y2 = mouse_y;
if (x2 != x3 || y2 != y3) {
rrestore(screen);//first time through ii=0
if (x1 < x2) {
do_line(screen,x1+1,y1,x2-1,y1, color, rsave);
do_line(screen,x2,y1+1,x2,y2-1, color, rsave);
do_line(screen,x2-1,y2,x1+1,y2, color, rsave);
do_line(screen,x1,y2-1,x1,y1+1, color, rsave);
}
if (x2 < x1) {
do_line(screen,x1-1,y1,x2+1,y1, color, rsave);
do_line(screen,x2,y1-1,x2,y2+1, color, rsave);
do_line(screen,x2+1,y2,x1-1,y2, color, rsave);
do_line(screen,x1,y2+1,x1,y1-1, color, rsave);
}
x3 = x2;
y3 = y2;
}
}/* end while */
rrestore(screen);
x2 = mouse_x;
y2 = mouse_y;
//draw final points
linebres(x1,y1,x2,y1,color);
linebres(x2,y1,x2,y2,color);
linebres(x2,y2,x1,y2,color);
linebres(x1,y2,x1,y1,color);
//add points to plist
PAddNode(polylist,x1,y1);
PAddNode(polylist,x2,y1);
PAddNode(polylist,x2,y2);
PAddNode(polylist,x1,y2);
polydata.theplist = polylist;
polydata.color = color;
polydata.filled = FALSE;
polydata.fill_color = 0;
polydata.width = 1;
AddPolygon(thelist, polydata);
polylist = PCreateList(); //leak?
unscare_mouse();
}
}// end whileaddin
}
int rubberpolygon(List thelist, int color)
{
int x1, x2, y1, y2;
int x3, y3;
bool firstrun = TRUE;
PList polylist;
Poly_Type polydata;
polylist = PCreateList(); //make a point list
while (!(mouse_b & 2)) {
if (mouse_b & 1) {
if (firstrun){
x3 = x1 = mouse_x;
y3 = y1 = mouse_y;
PAddNode(polylist,x1,y1);
scare_mouse();
}
else {
x3 = x1 = x2;
y3 = y1 = y2;
}
/* draw line while waiting for mouse release */
while (mouse_b & 1) {
x2 = mouse_x;
y2 = mouse_y;
if (x2 != x3 || y2 != y3) {
rrestore(screen);//first time through ii=0
do_line(screen,x1,y1,x2,y2,color, rsave);
x3 = x2;
y3 = y2;
}
}
/* on m1 release */
rrestore(screen);
x2 = mouse_x; // get current xy
y2 = mouse_y;
linebres(x1,y1,x2,y2,color);
PAddNode(polylist,x2,y2); //add second point
firstrun = FALSE;
}
}//while !mouse 2
linebres(polylist->last->ppoint.x,polylist->last->ppoint.y,
polylist->first->ppoint.x,polylist->first->ppoint.y,color);
//textprintf(screen,font,1,1,color,"%d",polylist->length);
polydata.theplist = polylist;
polydata.color = color;
polydata.filled = FALSE;
polydata.fill_color = 0;
polydata.width = 1;
AddPolygon(thelist, polydata);
//DisposePList(polylist);//oops ;)
unscare_mouse();
return 0;
}
