public void Render(Graphics.Graphics graphics)
{
switch (Mode)
{
case HandleMode.Resize:
for (int i = 0; i < BRUSH_MANIPULATION_HANDLE_COUNT; i++)
{
SolidGrabHandle handle = mHandles[i];
graphics.DrawSolidRectangle(handle.BottomLeft, handle.BottomRight,
handle.TopRight, handle.TopLeft, Color.White);
}
break;
case HandleMode.Rotate:
for (int i = 0; i < 4; i++)
{
SolidGrabHandle handle = mHandles[i];
graphics.DrawSolidCircle(handle.BottomLeft, handle.BottomRight,
handle.TopRight, handle.TopLeft, Color.White);
}
break;
case HandleMode.Skew:
for (int i = 4; i < 8; i++)
{
SolidGrabHandle handle = mHandles[i];
graphics.DrawSolidRectangle(handle.BottomLeft, handle.BottomRight,
handle.TopRight, handle.TopLeft, Color.White);
}
break;
}
}
private void RenderCrosshair(Graphics.Graphics graphics)
{
// render cross if captured the mouse
if (CapturedMouse)
{
graphics.BeginDraw(MathExtensions.CreateOrthographicLH(mWidth, mHeight, 0, 1.0f));
graphics.DrawSolidRectangle(Vector3.UnitX * -CROSS_SIZE + -Vector3.UnitY, Vector3.UnitX * CROSS_SIZE + -Vector3.UnitY,
Vector3.UnitX * CROSS_SIZE + Vector3.UnitY, Vector3.UnitX * -CROSS_SIZE + Vector3.UnitY, Color.White);
graphics.DrawSolidRectangle(Vector3.UnitY * -CROSS_SIZE + -Vector3.UnitX, Vector3.UnitY * -CROSS_SIZE + Vector3.UnitX,
Vector3.UnitY * CROSS_SIZE + Vector3.UnitX, Vector3.UnitY * CROSS_SIZE + -Vector3.UnitX, Color.White);
graphics.EndDraw();
}
}
/// <summary>
/// Draw corner point indicators
/// </summary>
/// <param name="graphics"></param>
/// <param name="solid"></param>
/// <param name="color"></param>
private void DrawCornerPoints(Graphics.Graphics graphics, Solid solid, Color color)
{
// create this viewport base vectors
float halfIndicitorSize = 1.8f * Viewport.Zoom;
Matrix4 viewportMatrix = Viewport.Camera.GetWorldMatrix().ClearTranslation();
Vector3 horizontalVector = viewportMatrix.Row0.Xyz * halfIndicitorSize;
Vector3 verticalVector = viewportMatrix.Row1.Xyz * halfIndicitorSize;
foreach (Vector3 position in solid.VertexPositions)
{
// create 4 points for the rectangle
Vector3 bottomLeft = position - horizontalVector - verticalVector;
Vector3 bottomRight = position + horizontalVector - verticalVector;
Vector3 topRight = position + horizontalVector + verticalVector;
Vector3 topLeft = position - horizontalVector + verticalVector;
graphics.DrawSolidRectangle(bottomLeft, bottomRight, topRight, topLeft, color);
}
}
private void RenderAllVertexHandles(Graphics.Graphics graphics, BaseViewport viewport)
{
int nearDepth = 1;
int farDepth = 0;
//TODO check why this is neccessary
if (viewport.ViewportType == BaseViewport.ViewportTypes.PERSPECTIVE)
{
nearDepth = 0;
farDepth = 1;
}
// handle vertices are already in NDC space when send to the graphicscard
GL.Clear(ClearBufferMask.DepthBufferBit);
GL.DepthRange(nearDepth, farDepth);
GL.Enable(EnableCap.DepthTest);
graphics.BeginDraw(Matrix4.Identity);
Vector3 handleDimensions = new Vector3((float)HandleSize / viewport.Width, (float)HandleSize / viewport.Height, 0.0f);
Matrix4 vpMatrix = viewport.Camera.GetViewMatrix() * viewport.Camera.GetProjMatrix();
Handle handle = new Handle();
List <Handle> selectedHandles = new List <Handle>();
// create handles and draw non selected handles
DoSolidAction(controller.Selection, (solid) =>
{
int index = 0;
foreach (Vector3 position in solid.VertexPositions)
{
Vector4 vec4Pos = new Vector4(position, 1.0f) * vpMatrix;
Vector3 pos = vec4Pos.Xyz / vec4Pos.W;
handle.BottomLeft = pos + (-Vector3.UnitX - Vector3.UnitY) * handleDimensions;
handle.BottomRight = pos + (Vector3.UnitX - Vector3.UnitY) * handleDimensions;
handle.TopRight = pos + (Vector3.UnitX + Vector3.UnitY) * handleDimensions;
handle.TopLeft = pos + (-Vector3.UnitX + Vector3.UnitY) * handleDimensions;
if (solid.SelectedVertices.Contains(index))
{
selectedHandles.Add(handle);
index++;
continue;
}
index++;
graphics.DrawSolidRectangle(handle.BottomLeft, handle.BottomRight,
handle.TopRight, handle.TopLeft, Color.White);
graphics.DrawRectangle(handle.BottomLeft, handle.BottomRight,
handle.TopRight, handle.TopLeft, Graphics.Graphics.LineType.LineNormal, Color.Black);
}
});
graphics.EndDraw();
GL.Clear(ClearBufferMask.DepthBufferBit);
graphics.BeginDraw(Matrix4.Identity);
//draw selected handles
foreach (Handle selectedHandle in selectedHandles)
{
graphics.DrawSolidRectangle(selectedHandle.BottomLeft, selectedHandle.BottomRight,
selectedHandle.TopRight, selectedHandle.TopLeft, Color.Red);
graphics.DrawRectangle(selectedHandle.BottomLeft, selectedHandle.BottomRight,
selectedHandle.TopRight, selectedHandle.TopLeft, Graphics.Graphics.LineType.LineNormal, Color.Black);
}
graphics.EndDraw();
GL.Disable(EnableCap.DepthTest);
GL.DepthRange(farDepth, nearDepth);
}