/// <summary>
/// Define a picking region.
/// </summary>
/// <param name="center">The center.</param>
/// <param name="delta">The delta.</param>
/// <param name="viewport">The viewport.</param>
/// <returns></returns>
/// <exception cref="System.ArgumentOutOfRangeException"></exception>
public static mat4 pickMatrix(ivec2 center, ivec2 delta, ivec4 viewport)
{
if (delta.x <= 0 || delta.y <= 0)
{
throw new ArgumentOutOfRangeException();
}
var Result = new mat4(1.0f);
if (!(delta.x > (0f) && delta.y > (0f)))
{
return(Result); // Error
}
vec3 Temp = new vec3(
((viewport[2]) - (2f) * (center.x - (viewport[0]))) / delta.x,
((viewport[3]) - (2f) * (center.y - (viewport[1]))) / delta.y,
(0f));
// Translate and scale the picked region to the entire window
Result = translate(Result, Temp);
return(scale(Result, new vec3((float)(viewport[2]) / delta.x, (float)(viewport[3]) / delta.y, (1))));
}
// <vertexbuffer count="13114" ctype="fff fff ff ff ff ffff hhhh" semantic="position normal texcoord1 texcoord2 texcoord3 blendweights blendindices">
/// <summary>
///
/// </summary>
/// <param name="xElement"></param>
/// <returns></returns>
public static unsafe EZMVertexbuffer Parse(System.Xml.Linq.XElement xElement)
{
EZMVertexbuffer result = null;
if (xElement.Name == "vertexbuffer")
{
result = new EZMVertexbuffer();
int groupCount = int.Parse(xElement.Attribute("count").Value);
result.Ctypes = xElement.Attribute("ctype").Value.Split(' ');
result.Semantics = xElement.Attribute("semantic").Value.Split(' ');
if (result.Ctypes.Length != result.Semantics.Length)
{
throw new Exception("EZMVertexbuffer.Ctypes.Length != EZMVertexbuffer.Semantics.Length");
}
int groupSize = result.Ctypes.Length; // how many elements in a group.
string[] parts = xElement.Value.Split(Separator.separators, StringSplitOptions.RemoveEmptyEntries);
var lineLength = result.Ctypes[0].Length;
var charCounts = new int[groupSize];
for (int i = 1; i < groupSize; i++)
{
charCounts[i] = charCounts[i - 1] + result.Ctypes[i - 1].Length; lineLength += result.Ctypes[i].Length;
}
var buffers = new Passbuffer[groupSize];
var pointers = new void *[groupSize];
for (int i = 0; i < groupSize; i++)
{
int index = charCounts[i];
buffers[i] = new Passbuffer(result.Ctypes[i], groupCount);
pointers[i] = buffers[i].Mapbuffer().ToPointer();
switch (buffers[i].type)
{
case PassType.vec4:
for (int t = 0; t < groupCount; t++)
{
float x = float.Parse(parts[t * lineLength + index + 0]);
float y = float.Parse(parts[t * lineLength + index + 1]);
float z = float.Parse(parts[t * lineLength + index + 2]);
float w = float.Parse(parts[t * lineLength + index + 3]);
var array = (vec4 *)pointers[i];
array[t] = new vec4(x, y, z, w);
if (!(0 <= x && x <= 1))
{
Console.WriteLine("Error");
}
if (!(0 <= y && y <= 1))
{
Console.WriteLine("Error");
}
if (!(0 <= z && z <= 1))
{
Console.WriteLine("Error");
}
if (!(0 <= w && w <= 1))
{
Console.WriteLine("Error");
}
}
break;
case PassType.vec3:
for (int t = 0; t < groupCount; t++)
{
float x = float.Parse(parts[t * lineLength + index + 0]);
float y = float.Parse(parts[t * lineLength + index + 1]);
float z = float.Parse(parts[t * lineLength + index + 2]);
var array = (vec3 *)pointers[i];
array[t] = new vec3(x, y, z);
}
break;
case PassType.vec2:
var vec2xList = new List <float>();
var vec2yList = new List <float>();
for (int t = 0; t < groupCount; t++)
{
float x = float.Parse(parts[t * lineLength + index + 0]);
if (x < 0)
{
x = 0;
}
if (1 < x)
{
x = 1;
}
float y = float.Parse(parts[t * lineLength + index + 1]);
if (y < 0)
{
y = 0;
}
if (1 < y)
{
y = 1;
}
var array = (vec2 *)pointers[i];
array[t] = new vec2(x, y);
if (!(0 <= x && x <= 1))
{
vec2xList.Add(x);
}
if (!(0 <= y && y <= 1))
{
vec2yList.Add(y);
}
}
if (vec2xList.Count > 0 || vec2yList.Count > 0)
{
Console.WriteLine("Error");
}
break;
case PassType.ivec4:
var list = new List <int>();
for (int t = 0; t < groupCount; t++)
{
int x = int.Parse(parts[t * lineLength + index + 0]);
int y = int.Parse(parts[t * lineLength + index + 1]);
int z = int.Parse(parts[t * lineLength + index + 2]);
int w = int.Parse(parts[t * lineLength + index + 3]);
var array = (ivec4 *)pointers[i];
array[t] = new ivec4(x, y, z, w);
if (!list.Contains(x))
{
list.Add(x);
}
if (!list.Contains(y))
{
list.Add(y);
}
if (!list.Contains(z))
{
list.Add(z);
}
if (!list.Contains(w))
{
list.Add(w);
}
}
break;
default:
break;
}
buffers[i].Unmapbuffer();
}
result.Buffers = buffers;
}
return(result);
}
/// <summary>
///
/// </summary>
/// <param name="v"></param>
public ivec2(ivec4 v)
{
this.x = v.x;
this.y = v.y;
}
/// <summary>
///
/// </summary>
/// <param name="v"></param>
public ivec3(ivec4 v)
{
this.x = v.x;
this.y = v.y;
this.z = v.z;
}