protected vec3[] FillPickedGeometrysPosition(uint[] indexes)
{
var positions = new vec3[indexes.Length];
OpenGL.BindBuffer(BufferTarget.ArrayBuffer, this.positionBufferPtr.BufferId);
for (int i = 0; i < indexes.Length; i++)
{
int offset = (int)(indexes[i] * this.positionBufferPtr.DataSize * this.positionBufferPtr.DataTypeByteLength);
//IntPtr pointer = GL.MapBuffer(BufferTarget.ArrayBuffer, MapBufferAccess.ReadOnly);
IntPtr pointer = OpenGL.MapBufferRange(BufferTarget.ArrayBuffer,
offset,
1 * this.positionBufferPtr.DataSize * this.positionBufferPtr.DataTypeByteLength,
MapBufferRangeAccess.MapReadBit);
if (pointer.ToInt32() != 0)
{
unsafe
{
var array = (vec3 *)pointer.ToPointer();
positions[i] = array[0];
}
}
else
{
ErrorCode error = (ErrorCode)OpenGL.GetError();
Debug.WriteLine(string.Format(
"Error:[{0}] MapBufferRange failed: buffer ID: [{1}]", error, this.positionBufferPtr.BufferId));
}
OpenGL.UnmapBuffer(BufferTarget.ArrayBuffer);
}
OpenGL.BindBuffer(BufferTarget.ArrayBuffer, 0);
return(positions);
}
protected vec3[] FillPickedGeometrysPosition(uint firstIndex, int indexCount)
{
int offset = (int)(firstIndex * this.positionBufferPtr.DataSize * this.positionBufferPtr.DataTypeByteLength);
OpenGL.BindBuffer(BufferTarget.ArrayBuffer, this.positionBufferPtr.BufferId);
//IntPtr pointer = GL.MapBuffer(BufferTarget.ArrayBuffer, MapBufferAccess.ReadOnly);
IntPtr pointer = OpenGL.MapBufferRange(BufferTarget.ArrayBuffer,
offset,
indexCount * this.positionBufferPtr.DataSize * this.positionBufferPtr.DataTypeByteLength,
MapBufferRangeAccess.MapReadBit);
var positions = new vec3[indexCount];
if (pointer.ToInt32() != 0)
{
unsafe
{
var array = (vec3 *)pointer.ToPointer();
for (uint i = 0; i < indexCount; i++)
{
positions[i] = array[i];
}
}
}
else
{
ErrorCode error = (ErrorCode)OpenGL.GetError();
throw new Exception(string.Format(
"Error:[{0}] MapBufferRange failed: buffer ID: [{1}]", error, this.positionBufferPtr.BufferId));
}
OpenGL.UnmapBuffer(BufferTarget.ArrayBuffer);
OpenGL.BindBuffer(BufferTarget.ArrayBuffer, 0);
return(positions);
}
/// <summary>
/// 遍历以<see cref="lastVerteID"/>为最后一个顶点的图元，
/// 瞄准每个图元的索引（例如1个三角形有3个索引）中的最后一个索引，
/// 将此索引在<see cref="indexBufferPtr"/>中的索引（位置）收集起来。
/// </summary>
/// <param name="lastVertexId"></param>
/// <returns></returns>
private List <RecognizedPrimitiveIndex> GetLastIndexIdList(RenderEventArgs arg, uint lastVertexId)
{
PrimitiveRecognizer recognizer = PrimitiveRecognizerFactory.Create(
(arg.RenderMode == RenderModes.ColorCodedPicking &&
arg.PickingGeometryType == GeometryType.Point &&
this.indexBufferPtr.Mode.ToGeometryType() == GeometryType.Line) ?
DrawMode.Points : this.indexBufferPtr.Mode);
PrimitiveRestartSwitch glSwitch = GetPrimitiveRestartSwitch();
OpenGL.BindBuffer(BufferTarget.ElementArrayBuffer, this.indexBufferPtr.BufferId);
IntPtr pointer = OpenGL.MapBuffer(BufferTarget.ElementArrayBuffer, MapBufferAccess.ReadOnly);
List <RecognizedPrimitiveIndex> lastIndexIdList = null;
if (glSwitch == null)
{
lastIndexIdList = recognizer.Recognize(lastVertexId, pointer, this.indexBufferPtr as OneIndexBufferPtr);
}
else
{
lastIndexIdList = recognizer.Recognize(lastVertexId, pointer, this.indexBufferPtr as OneIndexBufferPtr, glSwitch.RestartIndex);
}
OpenGL.UnmapBuffer(BufferTarget.ElementArrayBuffer);
OpenGL.BindBuffer(BufferTarget.ElementArrayBuffer, 0);
return(lastIndexIdList);
}
/// <summary>
/// 设置要高亮显示的图元。
/// </summary>
/// <param name="mode">要高亮显示的图元类型</param>
/// <param name="indexes">要高亮显示的图元的索引。</param>
public void SetHighlightIndexes(DrawMode mode, params uint[] indexes)
{
var indexBufferPtr = this.indexBufferPtr as OneIndexBufferPtr;
int indexesLength = indexes.Length;
if (indexesLength > this.maxElementCount)
{
using (var buffer = new OneIndexBuffer <uint>(
indexBufferPtr.Mode, BufferUsage.DynamicDraw))
{
buffer.Alloc(indexesLength);
indexBufferPtr = buffer.GetBufferPtr() as OneIndexBufferPtr;
}
this.maxElementCount = indexesLength;
}
OpenGL.BindBuffer(BufferTarget.ElementArrayBuffer, indexBufferPtr.BufferId);
IntPtr pointer = OpenGL.MapBuffer(BufferTarget.ElementArrayBuffer, MapBufferAccess.WriteOnly);
unsafe
{
var array = (uint *)pointer.ToPointer();
for (int i = 0; i < indexesLength; i++)
{
array[i] = indexes[i];
}
}
OpenGL.UnmapBuffer(BufferTarget.ElementArrayBuffer);
OpenGL.BindBuffer(BufferTarget.ElementArrayBuffer, 0);
indexBufferPtr.Mode = mode;
indexBufferPtr.ElementCount = indexesLength;
}
private void PickingLastLineInLineLoop(PickedGeometry pickedGeometry)
{
const int vertexCount = 2;
var offsets = new int[vertexCount] {
(this.positionBufferPtr.Length - 1) * this.positionBufferPtr.DataSize * this.positionBufferPtr.DataTypeByteLength, 0,
};
pickedGeometry.Positions = new vec3[vertexCount];
pickedGeometry.Indexes = new uint[vertexCount];
for (int i = 0; i < vertexCount; i++)
{
OpenGL.BindBuffer(BufferTarget.ArrayBuffer, this.positionBufferPtr.BufferId);
IntPtr pointer = OpenGL.MapBufferRange(BufferTarget.ArrayBuffer,
offsets[i],
1 * this.positionBufferPtr.DataSize * this.positionBufferPtr.DataTypeByteLength,
MapBufferRangeAccess.MapReadBit);
unsafe
{
var array = (vec3 *)pointer.ToPointer();
pickedGeometry.Positions[i] = array[0];
}
OpenGL.UnmapBuffer(BufferTarget.ArrayBuffer);
pickedGeometry.Indexes[i] = (uint)offsets[i] / (uint)(this.positionBufferPtr.DataSize * this.positionBufferPtr.DataTypeByteLength);
}
}
unsafe private void SetupGlyphPositions(string content, FontResource fontResource)
{
FullDictionary <char, CharacterInfo> charInfoDict = fontResource.CharInfoDict;
OpenGL.BindBuffer(BufferTarget.ArrayBuffer, this.model.positionBufferPtr.BufferId);
IntPtr pointer = OpenGL.MapBuffer(BufferTarget.ArrayBuffer, MapBufferAccess.ReadWrite);
var array = (GlyphPosition *)pointer.ToPointer();
int currentWidth = 0; int currentHeight = 0;
/*
* 0 3 4 7 8 11 12 15
* ------- ------- ------- -------
* | | | | | | | |
* | | | | | | | |
* | | | | | | | |
* ------- ------- ------- -------
* 1 2 5 6 9 10 13 14
*/
for (int i = 0; i < content.Length; i++)
{
char ch = content[i];
CharacterInfo info = charInfoDict[ch];
array[i] = new GlyphPosition(
new vec2(currentWidth, currentHeight + fontResource.FontHeight),
new vec2(currentWidth, currentHeight),
new vec2(currentWidth + info.width, currentHeight),
new vec2(currentWidth + info.width, currentHeight + fontResource.FontHeight));
currentWidth += info.width + fontResource.FontHeight / 10;
}
// move to center
for (int i = 0; i < content.Length; i++)
{
GlyphPosition position = array[i];
position.leftUp.x -= currentWidth / 2.0f;
//position.leftUp.x /= currentWidth / factor;
position.leftDown.x -= currentWidth / 2.0f;
//position.leftDown.x /= currentWidth / factor;
position.rightUp.x -= currentWidth / 2.0f;
//position.rightUp.x /= currentWidth / factor;
position.rightDown.x -= currentWidth / 2.0f;
//position.rightDown.x /= currentWidth / factor;
position.leftUp.y -= (currentHeight + fontResource.FontHeight) / 2.0f;
position.leftDown.y -= (currentHeight + fontResource.FontHeight) / 2.0f;
position.rightUp.y -= (currentHeight + fontResource.FontHeight) / 2.0f;
position.rightDown.y -= (currentHeight + fontResource.FontHeight) / 2.0f;
position.leftUp.x /= (currentHeight + fontResource.FontHeight);
position.leftDown.x /= (currentHeight + fontResource.FontHeight);
position.rightUp.x /= (currentHeight + fontResource.FontHeight);
position.rightDown.x /= (currentHeight + fontResource.FontHeight);
position.leftUp.y /= (currentHeight + fontResource.FontHeight);
position.leftDown.y /= (currentHeight + fontResource.FontHeight);
position.rightUp.y /= (currentHeight + fontResource.FontHeight);
position.rightDown.y /= (currentHeight + fontResource.FontHeight);
array[i] = position;
}
OpenGL.UnmapBuffer(BufferTarget.ArrayBuffer);
OpenGL.BindBuffer(BufferTarget.ArrayBuffer, 0);
}
/// <summary>
/// 根据<paramref name="differenceOnWindow"/>来修改指定索引处的顶点位置。
/// </summary>
/// <param name="differenceOnWindow"></param>
/// <param name="viewMatrix"></param>
/// <param name="projectionMatrix"></param>
/// <param name="viewport"></param>
/// <param name="positionIndexes"></param>
public void MovePositions(Point differenceOnWindow,
mat4 viewMatrix, mat4 projectionMatrix, vec4 viewport, params uint[] positionIndexes)
{
OpenGL.BindBuffer(BufferTarget.ArrayBuffer, this.positionBufferPtr.BufferId);
IntPtr pointer = OpenGL.MapBuffer(BufferTarget.ArrayBuffer, MapBufferAccess.ReadWrite);
unsafe
{
var array = (vec3 *)pointer.ToPointer();
foreach (var index in positionIndexes)
{
vec3 windowPos = glm.project(array[index],
viewMatrix, projectionMatrix, viewport);
vec3 newWindowPos = new vec3(windowPos.x + differenceOnWindow.X,
windowPos.y + differenceOnWindow.Y, windowPos.z);
array[index] = glm.unProject(newWindowPos,
viewMatrix, projectionMatrix, viewport);
}
}
OpenGL.UnmapBuffer(BufferTarget.ArrayBuffer);
OpenGL.BindBuffer(BufferTarget.ArrayBuffer, 0);
}
/// <summary>
/// 根据<paramref name="differenceOnScreen"/>来修改指定索引处的顶点位置。
/// </summary>
/// <param name="differenceOnScreen"></param>
/// <param name="viewMatrix"></param>
/// <param name="projectionMatrix"></param>
/// <param name="viewport"></param>
/// <param name="positionIndexes"></param>
public void MovePositions(Point differenceOnScreen,
mat4 viewMatrix, mat4 projectionMatrix, vec4 viewport, IEnumerable <uint> positionIndexes)
{
OpenGL.BindBuffer(BufferTarget.ArrayBuffer, this.positionBufferPtr.BufferId);
IntPtr pointer = OpenGL.MapBuffer(BufferTarget.ArrayBuffer, MapBufferAccess.ReadWrite);
unsafe
{
var array = (vec3 *)pointer.ToPointer();
foreach (var index in positionIndexes)
{
vec3 projected = glm.project(array[index],
viewMatrix, projectionMatrix, viewport);
vec3 newProjected = new vec3(projected.x + differenceOnScreen.X,
projected.y + differenceOnScreen.Y, projected.z);
array[index] = glm.unProject(newProjected,
viewMatrix, projectionMatrix, viewport);
}
}
OpenGL.UnmapBuffer(BufferTarget.ArrayBuffer);
OpenGL.BindBuffer(BufferTarget.ArrayBuffer, 0);
}
unsafe private void SetupGlyphTexCoord(string content, FontResource fontResource)
{
FullDictionary <char, CharacterInfo> charInfoDict = fontResource.CharInfoDict;
OpenGL.BindBuffer(BufferTarget.ArrayBuffer, this.model.uvBufferPtr.BufferId);
IntPtr pointer = OpenGL.MapBuffer(BufferTarget.ArrayBuffer, MapBufferAccess.WriteOnly);
var array = (GlyphTexCoord *)pointer.ToPointer();
int width = fontResource.TextureSize.Width;
int height = fontResource.TextureSize.Height;
/*
* 0 3 4 6 8 11 12 15
* ------- ------- ------- -------
* | | | | | | | |
* | | | | | | | |
* | | | | | | | |
* ------- ------- ------- -------
* 1 2 5 6 9 10 13 14
*/
for (int i = 0; i < content.Length; i++)
{
char ch = content[i];
CharacterInfo info = fontResource.CharInfoDict[ch];
const int shrimp = 0;
array[i] = new GlyphTexCoord(
//new vec2(0, 0),
//new vec2(0, 1),
//new vec2(1, 1),
//new vec2(1, 0)
new vec2((float)(info.xoffset + shrimp) / (float)width, (float)(info.yoffset) / (float)height),
new vec2((float)(info.xoffset + shrimp) / (float)width, (float)(info.yoffset + info.height) / (float)height),
new vec2((float)(info.xoffset - shrimp + info.width) / (float)width, (float)(info.yoffset + info.height) / (float)height),
new vec2((float)(info.xoffset - shrimp + info.width) / (float)width, (float)(info.yoffset) / (float)height)
);
}
OpenGL.UnmapBuffer(BufferTarget.ArrayBuffer);
OpenGL.BindBuffer(BufferTarget.ArrayBuffer, 0);
}
