126 lines
4.2 KiB
C++
126 lines
4.2 KiB
C++
#include "mydrawing.h"
|
|
//#include <iostream>
|
|
|
|
using namespace std;
|
|
MyDrawing::MyDrawing()
|
|
{
|
|
cout << "COLORS: 'b' = blue, 'r' = red, 'g' = green \n";
|
|
cout << "MODES: 'l' = lines, 'm' = mirror, 'd' = dotted, 'c' = connected\n";
|
|
cout << "OTHER: 'Delete' = clear image\n";
|
|
}
|
|
void MyDrawing::keyDown(GraphicsContext *gc, unsigned int keycode)
|
|
{
|
|
switch (keycode)
|
|
{
|
|
case 114: // 'r', change color to red
|
|
color = GraphicsContext::RED;
|
|
break;
|
|
case 103: // 'g', change color to green
|
|
color = GraphicsContext::GREEN;
|
|
break;
|
|
case 98: // 'b', change color to blues
|
|
color = GraphicsContext::BLUE;
|
|
break;
|
|
case 65535: // 'delete', clear window
|
|
gc->clear();
|
|
break;
|
|
case 108: // 'l', set mode to "lines"
|
|
mode = "lines";
|
|
break;
|
|
case 109: // 'm', set mode to "mirror"
|
|
mode = "mirror";
|
|
break;
|
|
case 99: // 'c', set mode to connected
|
|
connected = true;
|
|
break;
|
|
case 100: // 'd', set mode to dotted
|
|
connected = false;
|
|
break;
|
|
}
|
|
}
|
|
void MyDrawing::mouseButtonDown(GraphicsContext *gc, unsigned int button, int x,
|
|
int y)
|
|
{
|
|
hold = true; // user is holding down mouse
|
|
}
|
|
void MyDrawing::mouseMove(GraphicsContext *gc, int x, int y)
|
|
{
|
|
int dx = gc->getWindowWidth();
|
|
int dy = gc->getWindowHeight();
|
|
if (hold)
|
|
{ // only draw when user is holding down mouse
|
|
if (mode == "lines")
|
|
{
|
|
gc->setColor(color);
|
|
//. draw line from center of window to mouse location
|
|
gc->drawLine(dx / 2, dy / 2, x, y);
|
|
}
|
|
else if (mode == "mirror")
|
|
{
|
|
gc->setColor(color);
|
|
if (firstdraw)
|
|
{
|
|
xprev = x;
|
|
yprev = y;
|
|
firstdraw = false;
|
|
}
|
|
// mirror 8 times around center in dotted or connected mode
|
|
if (!connected)
|
|
{
|
|
setLargePixel(gc, x, y);
|
|
setLargePixel(gc, y + dx / 2 - dy / 2, -x + dx / 2 + dy / 2);
|
|
setLargePixel(gc, -y + dx / 2 + dy / 2, x - dx / 2 + dy / 2);
|
|
setLargePixel(gc, -x + dx, -y + dy);
|
|
setLargePixel(gc, y + dx / 2 - dy / 2, x - dx / 2 + dy / 2);
|
|
setLargePixel(gc, -y + dx / 2 + dy / 2, -x + dx / 2 + dy / 2);
|
|
setLargePixel(gc, x, -y + dy);
|
|
setLargePixel(gc, -x + dx, y);
|
|
}
|
|
else
|
|
{
|
|
drawLargeLine(gc, xprev, yprev, x, y);
|
|
drawLargeLine(gc, yprev + dx / 2 - dy / 2, -xprev + dx / 2 + dy / 2,
|
|
y + dx / 2 - dy / 2, -x + dx / 2 + dy / 2);
|
|
drawLargeLine(gc, -yprev + dx / 2 + dy / 2, xprev - dx / 2 + dy / 2,
|
|
-y + dx / 2 + dy / 2, x - dx / 2 + dy / 2);
|
|
drawLargeLine(gc, -xprev + dx, -yprev + dy, -x + dx, -y + dy);
|
|
drawLargeLine(gc, yprev + dx / 2 - dy / 2, xprev - dx / 2 + dy / 2,
|
|
y + dx / 2 - dy / 2, x - dx / 2 + dy / 2);
|
|
drawLargeLine(gc, -yprev + dx / 2 + dy / 2, -xprev + dx / 2 + dy / 2,
|
|
-y + dx / 2 + dy / 2, -x + dx / 2 + dy / 2);
|
|
drawLargeLine(gc, xprev, -yprev + dy, x, -y + dy);
|
|
drawLargeLine(gc, -xprev + dx, yprev, -x + dx, y);
|
|
}
|
|
// draw line from previous mouse coordinate
|
|
xprev = x;
|
|
yprev = y;
|
|
}
|
|
}
|
|
}
|
|
void MyDrawing::mouseButtonUp(GraphicsContext *gc,
|
|
unsigned int button, int x, int y)
|
|
{
|
|
// user has released mouse button
|
|
hold = false;
|
|
firstdraw = true;
|
|
}
|
|
|
|
void drawLargeLine(GraphicsContext *gc, int x0, int y0, int x1, int y1)
|
|
{
|
|
// draw 3 pixel wide line
|
|
gc->drawLine(x0, y0, x1, y1);
|
|
gc->drawLine(x0 + 1, y0, x1 + 1, y1);
|
|
gc->drawLine(x0 - 1, y0, x1 - 1, y1);
|
|
}
|
|
void setLargePixel(GraphicsContext *gc, int x, int y)
|
|
{
|
|
// draw 9x9 square around pixel
|
|
gc->setPixel(x, y);
|
|
gc->setPixel(x + 1, y);
|
|
gc->setPixel(x + 1, y + 1);
|
|
gc->setPixel(x, y + 1);
|
|
gc->setPixel(x - 1, y + 1);
|
|
gc->setPixel(x - 1, y);
|
|
gc->setPixel(x - 1, y - 1);
|
|
gc->setPixel(x, y - 1);
|
|
gc->setPixel(x + 1, y - 1); |