SubCanvas::SubCanvas(Canvas &canvas, RasterPoint _offset, PixelSize _size)
:relative(_offset)
{
assert(canvas.offset == OpenGL::translate);
offset = canvas.offset + _offset;
/* sub canvas bottom right limits can't be outside "parent" canvas. */
size.cx = std::min<PixelScalar>(_size.cx, canvas.GetSize().cx - _offset.x) ;
size.cy = std::min<PixelScalar>(_size.cy, canvas.GetSize().cy - _offset.y) ;
if (relative.x != 0 || relative.y != 0) {
OpenGL::translate += _offset;
#ifdef USE_GLSL
glVertexAttrib4f(OpenGL::Attribute::TRANSLATE,
OpenGL::translate.x, OpenGL::translate.y, 0, 0);
#else
glPushMatrix();
#ifdef HAVE_GLES
glTranslatex((GLfixed)relative.x << 16, (GLfixed)relative.y << 16, 0);
#else
glTranslatef(relative.x, relative.y, 0);
#endif
#endif /* !USE_GLSL */
}
if ((relative.x + size.cx < canvas.GetSize().cx)
|| (relative.y + size.cy < canvas.GetSize().cy)) {
/* Enable Clipping */
push_scissor = std::make_unique<GLPushScissor>();
scissor = std::make_unique<GLCanvasScissor>(*this);
}
}
void
BufferWindow::OnPaint(Canvas &canvas)
{
#ifdef ENABLE_OPENGL
if (!buffer.IsDefined()) {
buffer.Create(canvas.GetSize());
dirty = true;
}
if (dirty) {
dirty = false;
buffer.Begin(canvas);
OnPaintBuffer(buffer);
buffer.Commit(canvas);
} else
buffer.CopyTo(canvas);
#else
if (dirty) {
dirty = false;
OnPaintBuffer(buffer);
}
canvas.Copy(buffer);
#endif
}
virtual void OnPaint(Canvas &canvas) override {
canvas.ClearWhite();
const GeoPoint a(Angle::Degrees(7.70722),
Angle::Degrees(51.052));
const GeoPoint b(Angle::Degrees(11.5228),
Angle::Degrees(50.3972));
WindowProjection projection;
projection.SetScreenOrigin(canvas.GetWidth() / 2, canvas.GetHeight() / 2);
projection.SetGeoLocation(a.Middle(b));
projection.SetScreenSize(canvas.GetSize());
projection.SetScaleFromRadius(fixed(400000));
projection.UpdateScreenBounds();
canvas.SelectBlackPen();
canvas.SelectHollowBrush();
RasterPoint pa = projection.GeoToScreen(a);
canvas.DrawCircle(pa.x, pa.y, 4);
RasterPoint pb = projection.GeoToScreen(b);
canvas.DrawCircle(pb.x, pb.y, 4);
RenderFAISector(canvas, projection, a, b, false, settings);
}
void
TerrainPreviewWindow::OnPaint(Canvas &canvas)
{
const GlueMapWindow *map = UIGlobals::GetMap();
if (map == nullptr)
return;
MapWindowProjection projection = map->VisibleProjection();
if (!projection.IsValid()) {
/* TODO: initialise projection to middle of map instead of bailing
out */
canvas.ClearWhite();
return;
}
projection.SetScreenSize(canvas.GetSize());
projection.SetScreenOrigin(canvas.GetWidth() / 2, canvas.GetHeight() / 2);
Angle sun_azimuth(Angle::Degrees(-45));
if (renderer.GetSettings().slope_shading == SlopeShading::SUN &&
CommonInterface::Calculated().sun_data_available)
sun_azimuth = CommonInterface::Calculated().sun_azimuth;
renderer.Generate(projection, sun_azimuth);
#ifdef ENABLE_OPENGL
/* enable clipping because the OpenGL terrain renderer uses a large
texture that exceeds the window dimensions */
GLCanvasScissor scissor(canvas);
#endif
renderer.Draw(canvas, projection);
}
void
BufferCanvas::Begin(Canvas &other)
{
assert(IsDefined());
assert(!active);
Resize(other.GetSize());
if (frame_buffer != NULL) {
/* activate the frame buffer */
frame_buffer->Bind();
texture->AttachFramebuffer(FBO::COLOR_ATTACHMENT0);
if (OpenGL::render_buffer_stencil == OpenGL::render_buffer_depth_stencil)
/* we don't need a depth buffer, but we must attach it to the
FBO if the stencil Renderbuffer has one */
stencil_buffer->AttachFramebuffer(FBO::DEPTH_ATTACHMENT);
stencil_buffer->AttachFramebuffer(FBO::STENCIL_ATTACHMENT);
/* save the old viewport */
old_translate = OpenGL::translate;
old_size = OpenGL::screen_size;
glPushMatrix();
/* configure a new viewport */
OpenGL::SetupViewport({GetWidth(), GetHeight()});
OpenGL::translate = {0, 0};
} else {
offset = other.offset;
}
active = true;
}
//----------------------------------------------------------------------------
void EditRenderView_Scene::_ZoomCamera(float zoom)
{
Canvas *canvas = PX2_PROJ.GetSceneCanvas();
const Sizef &size = canvas->GetSize();
Scene *scene = PX2_PROJ.GetScene();
if (!scene) return;
CameraActor *camActor = scene->GetUseCameraActor();
if (camActor)
{
APoint position = camActor->LocalTransform.GetTranslate();
AVector dir = camActor->GetCamera()->GetDVector();
dir.Normalize();
if (VT_PERSPECTIVE == mViewType)
{
position += dir*zoom;
camActor->LocalTransform.SetTranslate(position);
}
else if (VT_TOP == mViewType)
{
float rMin = 0.0f;
float rMax = 0.0f;
float uMin = 0.0f;
float uMax = 0.0f;
float dMin = 0.0f;
float dMax = 0.0f;
float orthoFrustumMin = 1.0f;
camActor->GetCamera()->GetFrustum(dMin, dMax, uMin, uMax, rMin, rMax);
uMin += (zoom * 1.0f);
if (uMin > -orthoFrustumMin)
uMin = -orthoFrustumMin;
uMax = -uMin;
rMin = uMin * size.Width / size.Height;
rMax = -rMin;
camActor->GetCamera()->SetFrustum(dMin, dMax, uMin, uMax, rMin, rMax);
}
else if (VT_FRONT == mViewType)
{
float rMin = 0.0f;
float rMax = 0.0f;
float uMin = 0.0f;
float uMax = 0.0f;
float dMin = 0.0f;
float dMax = 0.0f;
float orthoFrustumMin = 1.0f;
camActor->GetCamera()->GetFrustum(dMin, dMax, uMin, uMax, rMin, rMax);
uMin += (zoom * 1.0f);
if (uMin > -orthoFrustumMin)
uMin = -orthoFrustumMin;
uMax = -uMin;
rMin = uMin * size.Width / size.Height;
rMax = -rMin;
camActor->GetCamera()->SetFrustum(dMin, dMax, uMin, uMax, rMin, rMax);
}
}
}
void Create(const Canvas &canvas) {
Create(canvas, canvas.GetSize());
}
void
BufferCanvas::Create(const Canvas &canvas)
{
Create(canvas, canvas.GetSize());
}
void
BufferCanvas::Begin(Canvas &other)
{
assert(IsDefined());
assert(!active);
Resize(other.GetSize());
if (frame_buffer != nullptr) {
/* activate the frame buffer */
frame_buffer->Bind();
texture->AttachFramebuffer(FBO::COLOR_ATTACHMENT0);
if (OpenGL::render_buffer_stencil == OpenGL::render_buffer_depth_stencil)
/* we don't need a depth buffer, but we must attach it to the
FBO if the stencil Renderbuffer has one */
stencil_buffer->AttachFramebuffer(FBO::DEPTH_ATTACHMENT);
stencil_buffer->AttachFramebuffer(FBO::STENCIL_ATTACHMENT);
/* save the old viewport */
#ifdef HAVE_GLES
/* there's no glPushAttrib() on GL/ES; emulate it */
glGetIntegerv(GL_VIEWPORT, old_viewport);
#else
glPushAttrib(GL_VIEWPORT_BIT);
#endif
#ifdef USE_GLSL
old_projection_matrix = OpenGL::projection_matrix;
OpenGL::projection_matrix = glm::mat4();
#else
glMatrixMode(GL_PROJECTION);
glPushMatrix();
glMatrixMode(GL_MODELVIEW);
glPushMatrix();
#endif
old_translate = OpenGL::translate;
old_size = OpenGL::viewport_size;
#ifdef SOFTWARE_ROTATE_DISPLAY
old_orientation = OpenGL::display_orientation;
OpenGL::display_orientation = DisplayOrientation::DEFAULT;
#endif
/* configure a new viewport */
OpenGL::SetupViewport({GetWidth(), GetHeight()});
OpenGL::translate = {0, 0};
#ifdef USE_GLSL
glVertexAttrib4f(OpenGL::Attribute::TRANSLATE,
OpenGL::translate.x, OpenGL::translate.y, 0, 0);
#endif
} else {
offset = other.offset;
}
#ifndef NDEBUG
active = true;
#endif
}
