private static Collission DetectCollission(List <vec4> rects)
{
for (var iCurrentRect = 0; iCurrentRect < rects.Count; ++iCurrentRect)
{
for (var iOtherRect = 0; iOtherRect < rects.Count; ++iOtherRect)
{
if (iCurrentRect == iOtherRect)
{
continue;
}
var currRect = rects[iCurrentRect];
var otherRect = rects[iOtherRect];
if (HitTests.HitTest(ref currRect, ref otherRect) != HitTestResult.Apart)
{
return new Collission {
Happened = true, A = iCurrentRect, B = iOtherRect
}
}
;
}
}
return(new Collission());
}
}
private static void Validate(List <vec4> rects)
{
for (var iCurrentRect = 0; iCurrentRect < rects.Count; ++iCurrentRect)
{
for (var iOtherRect = 0; iOtherRect < rects.Count; ++iOtherRect)
{
if (iCurrentRect == iOtherRect)
{
continue;
}
var currRect = rects[iCurrentRect];
var otherRect = rects[iOtherRect];
if (HitTests.HitTest(ref currRect, ref otherRect) != HitTestResult.Apart)
{
throw new Exception("collision");
}
}
}
}
public void HitTest()
{
vec4 rect0 = new vec4(0, 0, 1, 1);
vec4 rect1 = new vec4(-1, 0, 1.5f, 1);
var overlap0 = HitTests.HitTest(rect0, rect1) != HitTestResult.Apart;
Assert.IsTrue(overlap0);
rect0 = new vec4(5, 0, 1, 1);
rect1 = new vec4(-1, 0, 1.5f, 1);
var overlap1 = HitTests.HitTest(rect0, rect1) != HitTestResult.Apart;
Assert.IsFalse(overlap1);
rect0 = new vec4(0, 0, 1, 1);
rect1 = new vec4(1, 0, 1, 1);
var overlap2 = HitTests.HitTest(rect0, rect1) != HitTestResult.Apart;
Assert.IsFalse(overlap2);
}
protected virtual void OnRedraw(OpenGL gl)
{
gl.ClearColor(1, 1, 1, 1);
gl.Clear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
gl.MatrixMode(GL_PROJECTION);
gl.LoadIdentity();
gl.Ortho(0, Width, Height, 0, -1, 1);
gl.MatrixMode(GL_MODELVIEW);
gl.LoadIdentity();
using (spriteBatch.BeginScope())
{
float borderThickness = 1;
var iLoCol = 0;
var iHiCol = 0;
var iLoRow = 0;
var iHiRow = 0;
//DrawColumns(borderThickness, ref iLoCol, ref iHiCol);
//DrawRows(borderThickness, ref iLoRow, ref iHiRow);
//for (var iCol = iLoCol; iCol < iHiCol; iCol++)
// for (var iRow = iLoRow; iRow < iHiRow; iRow++)
// {
// var offsetX = Columns[iCol]._OffsetX;
// var offsetY = Rows[iRow]._OffsetY;
// spriteBatch.Text((float)Math.Round(offsetX - (float)HOffset + 15), (float)Math.Round(offsetY - (float)VOffset), names[(iCol + iRow) % names.Length], font, TextColor, .5f, .5f);
// }
//for (var iCol = iLoCol; iCol < iHiCol; iCol++)
// for (var iRow = iLoRow; iRow < iHiRow; iRow++)
// {
// var offsetX = Columns[iCol]._OffsetX;
// var offsetY = Rows[iRow]._OffsetY;
// spriteBatch.Rect(offsetX - (float)HOffset + 3, offsetY - (float)VOffset + 3, 9, 9, colors[(iCol + iRow) % colors.Length]);
// spriteBatch.Rect(offsetX - (float)HOffset + 2, offsetY - (float)VOffset + 2, 11, 11, BorderColor, -.1f);
// }
//spriteBatch.Triangle(
// new vec2(-1.0f, -1.0f),
// new vec2(1.0f, -1.0f),
// new vec2(1.0f, 1.0f),
// Color.Chocolate, 1.0f);
var n = .39f;
//var rects = new[] { new vec2(32, 146), new vec2(71, 24), new vec2(55, 132), new vec2(77, 38), new vec2(43, 79) };
// reverse, longer into y
//for (var i = 0; i < rects.Length; ++i)
//{
// ref var rect = ref rects[i];
// if (rect.x > rect.y)
// {
// var oldX = rect.x;
// rect.x = rect.y;
// rect.y = rect.x;
// }
//}
var maxHeight = rectSizes.Max(z => z.y);
var sumWidth = rectSizes.Sum(z => z.x);
Array.Sort(rectSizes, new Comparison <vec2>((a, b) => (int)(b.x * b.y - a.x * a.y)));
var spaces = new List <vec4>();
spaces.Add(new vec4(rectSizes[0].x, 0, 9999f, 9999f));
spaces.Add(new vec4(0, rectSizes[0].y, 9999f, 9999f));
var rects = new List <vec4> {
new vec4(0, 0, rectSizes[0].x, rectSizes[0].y)
};
var width = Math.Max(rectSizes[0].x, rectSizes[0].y);
for (var i = 1; i < rectSizes.Length; ++i)
{ // go through all rectangles and place them somewhere
var rectSize = rectSizes[i];
var spaceFoundIndex = -1;
vec4 foundSpace = new vec4(0, 0, 9999f, 9999f);
for (var iSpace = 0; iSpace < spaces.Count; ++iSpace)
{
var space = spaces[iSpace];
if (space.z >= rectSize.x && space.w >= rectSize.y)
{ // would fit
if (spaceFoundIndex == -1)
{
spaceFoundIndex = iSpace;
foundSpace = space;
}
else
{
if (space.x + rectSize.x < width && space.y + rectSize.y < width)
{
//if (space.x + rectSize.x + space.y + rectSize.y < foundSpace.x + rectSize.x + foundSpace.y + rectSize.y)
//{
spaceFoundIndex = iSpace;
foundSpace = space;
//}
}
}
}
}
if (spaceFoundIndex == -1)
{
throw new Exception("not found");
}
var newSpace0 = new vec4(foundSpace.x + rectSize.x, foundSpace.y, 9999f, 9999f);
spaces[spaceFoundIndex] = newSpace0;
spaces.Add(new vec4(foundSpace.x, foundSpace.y + rectSize.y, 9999f, 9999f));
var newRect = new vec4(foundSpace.x, foundSpace.y, rectSize.x, rectSize.y);
rects.Add(newRect);
width = Math.Max(width, Math.Max(newRect.x + newRect.z, newRect.y + newRect.w));
for (var iSpace = 0; iSpace < spaces.Count; ++iSpace)
{
var space = spaces[iSpace];
var hitTestX = HitTests.HitTest(newRect.x, newRect.x + newRect.z, space.x, space.x + space.z);
var hitTestY = HitTests.HitTest(newRect.y, newRect.y + newRect.w, space.y, space.y + space.w);
if (hitTestX != HitTestResult.Apart && hitTestY != HitTestResult.Apart)
{
if (hitTestX == HitTestResult.B_Contains_A)
{
space.z = newRect.x - space.x;
continue;
}
if (hitTestY == HitTestResult.B_Contains_A)
{
space.w = newRect.y - space.y;
continue;
}
if (hitTestX == HitTestResult.A_Intersects_B)
{
space.z = space.z - (newRect.x + newRect.z) - space.x;
space.x = newRect.x + newRect.z;
continue;
}
if (hitTestY == HitTestResult.A_Intersects_B)
{
space.w = space.w - (newRect.y + newRect.w) - space.y;
space.y = newRect.y + newRect.w;
continue;
}
}
}
}
Validate(rects);
for (var i = 0; i < rects.Count; ++i)
{
var rect = rects[i];
spriteBatch.Rect(rect.x, rect.y, rect.z, rect.w, colors[i % colors.Length]);
}
//for(var i = 0; i < rectSizes.Length; ++i)
//{
// var rectSize = rectSizes[i];
// spriteBatch.Rect(
// x, 0f, rectSize.x, rectSize.y, colors[i % colors.Length]);
// x += rectSize.x;
//}
//spriteBatch.Quad(
// new vec2(-n, -n),
// new vec2(n, -n),
// new vec2(n, n),
// new vec2(-n, n),
// // _texture,
// Color.Red);
//spriteBatch.Rect(
// 100, 105,
// 1000.0f, 1200.0f,
//Color.Black);
//spriteBatch.Rect(
// 100, 105,
// 1300.0f, 1200.0f,
// _texture,
// Color.Gainsboro);
//for (var x = 0f; x < 1000f; x += 10)
// for (var y = 0f; y < 1000f; y += 10)
// {
// spriteBatch.Rect(
// x + _rotation % 100, y,
// 9, 9,
// Color.PaleVioletRed);
// }
//spriteBatch.Text((float)HOffset, (float)VOffset, "Hello World!!!", font, TextColor, 1f, 1f);
}
}