private void CalcProjectionMatrix()
{
Vector2 min = mWorldView.GetMin();
Vector2 max = mWorldView.GetMax();
// left, right, bottom, top, near, far
float left = min.X;
float right = max.X;
float top = min.Y;
float bottom = max.Y;
const float near = 1;
const float far = -1;
mProjectionMatrix = Matrix.CreateOrthographicOffCenter(left, right, bottom, top, near, far);
}
private xAABB2 ClampWorldView(xAABB2 world_view)
{
// make it true to aspect ratio and can't exceed width or height of map.
Vector2 min = world_view.GetMin();
Vector2 max = world_view.GetMax();
// clamp edges
min.X = Math.Max(0, min.X);
min.Y = Math.Max(0, min.Y);
max.X = Math.Min(mWorldSize.x, max.X);
max.Y = Math.Min(mWorldSize.y, max.Y);
// restore aspect ratio by bringing in x or y
Vector2 span = max - min;
float ideal_dy = span.X * mAspect;
if (span.Y > ideal_dy)
{
max.Y = min.Y + span.X * mAspect;
}
else
{
max.X = min.X + span.Y / mAspect;
}
return(new xAABB2(min, max));
}
public void Util_DrawBox(XSimpleDraw simple_draw, Style style, xAABB2 screen_aabb)
{
Vector3 lo_x_lo_y = new Vector3(screen_aabb.GetMin(), 0);
Vector3 hi_x_hi_y = new Vector3(screen_aabb.GetMax(), 0);
Vector2 size = screen_aabb.GetSize();
Vector3 lo_x_hi_y = lo_x_lo_y + new Vector3(0, size.Y, 0);
Vector3 hi_x_lo_y = lo_x_lo_y + new Vector3(size.X, 0, 0);
simple_draw.DrawQuad(lo_x_lo_y, hi_x_hi_y, style.mBackgroundColor);
simple_draw.DrawLine(lo_x_lo_y, hi_x_lo_y, style.mBorderColor);
simple_draw.DrawLine(hi_x_lo_y, hi_x_hi_y, style.mBorderColor);
simple_draw.DrawLine(hi_x_hi_y, lo_x_hi_y, style.mBorderColor);
simple_draw.DrawLine(lo_x_hi_y, lo_x_lo_y, style.mBorderColor);
}
void _IButton.Draw(XSimpleDraw simple_draw)
{
// draw border and background, then draw core
Vector3 lo = new Vector3(mAABB.GetMin(), 2); // zero might not be right z
Vector3 hi = new Vector3(mAABB.GetMax(), 2);
Color body_color = mButtonCore.mPressed ? mButtonCore.mPressedColor : mButtonCore.mStyle.mBackgroundColor;
Color border_color = mButtonCore.mStyle.mBorderColor;
simple_draw.DrawQuad(lo, hi, body_color);
simple_draw.DrawLine(lo, mCorner2, border_color);
simple_draw.DrawLine(mCorner2, hi, border_color);
simple_draw.DrawLine(hi, mCorner3, border_color);
simple_draw.DrawLine(mCorner3, lo, border_color);
mButtonCore.Draw(simple_draw);
}
public void RenderWorldLines_Dynamic(xAABB2 view_aabb)
{
XSimpleDraw simple_draw_world = XSimpleDraw.Instance(xeSimpleDrawType.WorldSpace_Transient);
// calculate color to use based on how much world is being drawn
const float k_large_view_size = 200;
const float k_small_view_size = 5;
float view_width = view_aabb.GetMax().X - view_aabb.GetMin().X;
float lightness = view_width > k_large_view_size ? 1.0f :
view_width < k_small_view_size ? 0.0f :
(view_width - k_small_view_size) / (k_large_view_size - k_small_view_size);
lightness = XMath.Sqrt(lightness);
Color k_lightest_color = new Color(0.0f, 0.0f, 0.0f, 0.025f);
Color k_darkest_color = new Color(0.0f, 0.0f, 0.0f, 0.33f);
Color result_color = Color.Lerp(k_darkest_color, k_lightest_color, lightness);
// each cell is 1 unit on edge in world space
Vector3 start = new Vector3();
Vector3 end = new Vector3();
start.Y = 0;
end.Y = mMap.mBounds.y;
for (int x = 0; x <= mMap.mBounds.x; ++x)
{
start.X = x;
end.X = x;
simple_draw_world.DrawLine(start, end, result_color);
}
start.X = 0;
end.X = mMap.mBounds.x;
for (int y = 0; y <= mMap.mBounds.y; ++y)
{
start.Y = y;
end.Y = y;
simple_draw_world.DrawLine(start, end, result_color);
}
}
void _ISelector.Draw(XSimpleDraw simple_draw)
{
if (mRenderEnabled)
{
// draw the title and background, buttons will draw themselves
Style style = XUI.Instance().GetStyle(mStyle);
Color widget_color = style.mBackgroundColor;
Color border_color = style.mBorderColor;
Vector3 lo_x_lo_y = new Vector3(mAABB.GetMin(), 1);
Vector3 hi_x_hi_y = new Vector3(mAABB.GetMax(), 1);
Vector2 size = mAABB.GetSize();
Vector3 lo_x_hi_y = lo_x_lo_y + new Vector3(0, size.Y, 0);
Vector3 hi_x_lo_y = lo_x_lo_y + new Vector3(size.X, 0, 0);
simple_draw.DrawQuad(lo_x_lo_y, hi_x_hi_y, widget_color);
simple_draw.DrawLine(lo_x_lo_y, hi_x_lo_y, border_color);
simple_draw.DrawLine(hi_x_lo_y, hi_x_hi_y, border_color);
simple_draw.DrawLine(hi_x_hi_y, lo_x_hi_y, border_color);
simple_draw.DrawLine(lo_x_hi_y, lo_x_lo_y, border_color);
}
}
private void ValidateAABB()
{
if (mParent != null)
{
xAABB2 parent_aabb = new xAABB2(Vector2.Zero, mParent.GetPosition().GetRelatveAABB().GetSize());
XUtils.Assert(parent_aabb.Contains(mRelativeAABB.GetMin()) && parent_aabb.Contains(mRelativeAABB.GetMax()));
}
}
public static void UnitTest()
{
xAABB2 aabb1 = new xAABB2();
XUtils.Assert(aabb1.mIsValid == false);
xAABB2 aabb2 = new xAABB2(Vector2.Zero);
xAABB2 aabb3 = new xAABB2(Vector2.Zero, 1f);
xAABB2 aabb4 = new xAABB2(Vector2.Zero, Vector2.Zero);
XUtils.Assert(aabb2.IsValid() && aabb3.IsValid() && aabb4.IsValid());
aabb2.Reset();
XUtils.Assert(!aabb2.IsValid());
Vector2 oneTwo = new Vector2(1f, 2f);
Vector2 negTwoFour = -2f * oneTwo;
Vector2 TwentyTen = new Vector2(20f, 10f);
const float kTol = 0.001f;
aabb2.Set(oneTwo);
XUtils.AssertVal(aabb2.mMin, oneTwo, kTol);
XUtils.AssertVal(aabb2.mMax, oneTwo, kTol);
XUtils.Assert(aabb2.IsValid());
//aabb2.Set( oneTwo, negTwoFour ); inside out, asserts, good
aabb2.Set(negTwoFour, oneTwo);
XUtils.Assert(aabb2.Contains(Vector2.Zero));
XUtils.Assert(!aabb2.Contains(TwentyTen));
XUtils.Assert(aabb2.Contains(negTwoFour));
XUtils.Assert(aabb2.Contains(oneTwo));
XUtils.Assert(!aabb2.Contains(-TwentyTen));
//aabb2.Set( oneTwo, -3f ); asserts on negative radius, good
Vector2 fiveFive = new Vector2(5f, 5f);
Vector2 sixSeven = oneTwo + fiveFive;
Vector2 negFourThree = new Vector2(-4f, -3f);
Vector2 epsilon = new Vector2(kTol, kTol);
aabb2.Set(oneTwo, 5f);
XUtils.Assert(aabb2.Contains(oneTwo));
XUtils.Assert(aabb2.Contains(fiveFive));
XUtils.Assert(aabb2.Contains(negFourThree));
XUtils.Assert(!aabb2.Contains(TwentyTen));
XUtils.Assert(!aabb2.Contains(-TwentyTen));
XUtils.Assert(aabb2.Contains(Vector2.Zero));
XUtils.Assert(aabb2.Contains(negFourThree + epsilon));
XUtils.Assert(!aabb2.Contains(negFourThree - epsilon));
XUtils.Assert(aabb2.Contains(sixSeven - epsilon));
XUtils.Assert(!aabb2.Contains(sixSeven + epsilon));
aabb2.Set(Vector2.Zero);
XUtils.Assert(!aabb2.IsNonDegenerate());
aabb2.Add(Vector2.UnitX);
XUtils.Assert(!aabb2.IsNonDegenerate());
XUtils.Assert(aabb2.Contains(new Vector2(0.5f, 0f)));
aabb2.Add(oneTwo);
XUtils.Assert(aabb2.IsNonDegenerate());
XUtils.Assert(aabb2.Contains(new Vector2(0.5f, 1f)));
aabb2.Reset();
aabb2.Add(Vector2.Zero);
XUtils.Assert(aabb2.IsValid());
aabb2.Reset();
aabb2.Add(-fiveFive);
aabb2.Add(TwentyTen);
XUtils.AssertVal(aabb2.GetMin(), -fiveFive, kTol);
XUtils.AssertVal(aabb2.GetMax(), TwentyTen, kTol);
XUtils.AssertVal(aabb2.GetCenter(), new Vector2(7.5f, 2.5f), kTol);
XUtils.AssertVal(aabb2.GetRadius(), new Vector2(12.5f, 7.5f), kTol);
XUtils.AssertVal(aabb2.GetSize(), new Vector2(25f, 15f), kTol);
XUtils.AssertVal(aabb2.GetArea(), 375f, kTol);
aabb2.Reset();
aabb2.Add(Vector2.Zero);
aabb2.Add(oneTwo);
aabb2.ScaleWorld(4f);
XUtils.AssertVal(aabb2.GetArea(), 32f, kTol);
aabb2.Translate(fiveFive);
Vector2 center2 = new Vector2(7f, 9f);
XUtils.AssertVal(aabb2.GetArea(), 32f, kTol);
XUtils.AssertVal(aabb2.GetCenter(), center2, kTol);
XUtils.Assert(!aabb2.Contains(oneTwo));
XUtils.Assert(aabb2.Contains(new Vector2(6f, 8f)));
//aabb2.ScaleWorld( -1f ); asserts negative scalar, good
//aabb2.ScaleLocal( -50f ); asserts negative scalar, good
aabb2.ScaleLocal(0.25f);
XUtils.AssertVal(aabb2.GetCenter(), center2, kTol);
XUtils.AssertVal(aabb2.GetArea(), 2f, kTol);
XUtils.Assert(!aabb2.Contains(new Vector2(6f, 8f)));
XUtils.Assert(aabb2.Contains(center2));
aabb2.Reset();
aabb2.Add(Vector2.Zero);
aabb2.Add(oneTwo);
aabb2.Resize(new Vector2(0.1f, -0.3f));
XUtils.AssertVal(aabb2.GetArea(), 1.68f, kTol);
XUtils.Assert(!aabb2.Contains(Vector2.Zero));
XUtils.Assert(aabb2.Contains(new Vector2(-0.05f, 1.4f)));
}