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right click: remove last point

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This commit is contained in:
Alexandre Quessy
2013-11-15 01:21:00 +01:00
parent 66844ae53b
commit 0869988fd8
1 changed files with 29 additions and 13 deletions
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prototypes/wx-polyline/main.cpp
+29 -13
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@@ -13,6 +13,11 @@
//Not necessary, but if it was, it needs to be replaced by process.h AND io.h
#endif
/*
* Left: place point
* Right: remove previous point
* Middle: invisible line. (no line)
*/
class Point
{
public:
@@ -29,6 +34,7 @@ class PolyLine
{
public:
void addPoint(Point point);
void removeLastPoint();
void draw();
private:
std::vector<Point> points;
@@ -38,25 +44,34 @@ void PolyLine::addPoint(Point point)
{
points.push_back(point);
}
void PolyLine::removeLastPoint()
{
if (points.size() >= 1)
points.erase(points.end());
}
void PolyLine::draw()
{
std::vector<Point>::const_iterator iter;
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glEnable(GL_BLEND);
glDisable (GL_TEXTURE_2D);
glEnable(GL_LINE_SMOOTH);
glLineWidth(3.0f);
glPushMatrix ();
glDisable (GL_LIGHTING);
glColor3f (1.0f, 0.8f, 0.2f);
glColor3f (0.2f, 1.0f, 0.2f);
glBegin (GL_LINE_STRIP);
for (iter = points.begin(); iter != points.end(); iter++)
{
printf("glVertex3f %f %f %f", (*iter).x, (*iter).y, 0.0f);
glVertex3f ((*iter).x, (*iter).y, 0.0f);
}
glEnd ();
glDisable (GL_TEXTURE_2D);
glPopMatrix ();
}
@@ -94,13 +109,21 @@ void wxGLCanvasSubClass::Paintit(wxPaintEvent& WXUNUSED(event))
void wxGLCanvasSubClass::OnMouseEvent(wxMouseEvent& event)
{
printf("x=%d y=%d LeftIsDown=%d\n", event.GetX(), event.GetY(), (int) event.LeftIsDown());
//printf("x=%d y=%d LeftIsDown=%d\n", event.GetX(), event.GetY(), (int) event.LeftIsDown());
bool should_render = false;
if (event.LeftIsDown())
{
lines[0].addPoint(Point((float) event.GetX(), (float) event.GetY()));
Render();
should_render = true;
}
else if (event.RightIsDown())
{
lines[0].removeLastPoint();
should_render = true;
}
if (should_render)
Render();
}
void wxGLCanvasSubClass::drawAllLines()
@@ -115,11 +138,8 @@ void wxGLCanvasSubClass::drawAllLines()
void wxGLCanvasSubClass::setup_polyline()
{
lines.clear();
lines.push_back(PolyLine());
// lines[0].addPoint(Point(30.0f, 30.0f));
// lines[0].addPoint(Point(60.0f, 40.0f));
// lines[0].addPoint(Point(90.0f, 20.0f));
// lines[0].addPoint(Point(30.0f, 100.0f));
}
void wxGLCanvasSubClass::Render()
@@ -149,10 +169,6 @@ void wxGLCanvasSubClass::Render()
glLoadIdentity ();
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glEnable(GL_BLEND);
glEnable(GL_LINE_SMOOTH);
glLineWidth(2.0f);
drawAllLines();