internal Uniforms(HableCurve parent)
{
this.parent = parent;
}
void DrawCustomToneCurve(DragonPostProcess.Property.ToneMapProperty property)
{
EditorGUILayout.Space();
Vector3[] m_RectVertices = new Vector3[4];
Vector3[] m_LineVertices = new Vector3[2];
Vector3[] m_CurveVertices = new Vector3[k_CustomToneCurveResolution];
Rect m_CustomToneCurveRect;
// Reserve GUI space
using (new GUILayout.HorizontalScope())
{
GUILayout.Space(EditorGUI.indentLevel * 15f);
m_CustomToneCurveRect = GUILayoutUtility.GetRect(128, 80);
}
if (Event.current.type != EventType.Repaint)
{
return;
}
// Prepare curve data
float toeStrength = property.toneCurveToeStrength;
float toeLength = property.toneCurveToeLength;
float shoulderStrength = property.toneCurveShoulderStrength;
float shoulderLength = property.toneCurveShoulderLength;
float shoulderAngle = property.toneCurveShoulderAngle;
float gamma = property.toneCurveGamma;
HableCurve m_HableCurve = new HableCurve();
m_HableCurve.Init(
toeStrength,
toeLength,
shoulderStrength,
shoulderLength,
shoulderAngle,
gamma
);
float endPoint = m_HableCurve.whitePoint;
// Background
m_RectVertices[0] = PointInRect(0f, 0f, endPoint, m_CustomToneCurveRect);
m_RectVertices[1] = PointInRect(endPoint, 0f, endPoint, m_CustomToneCurveRect);
m_RectVertices[2] = PointInRect(endPoint, k_CustomToneCurveRangeY, endPoint, m_CustomToneCurveRect);
m_RectVertices[3] = PointInRect(0f, k_CustomToneCurveRangeY, endPoint, m_CustomToneCurveRect);
Handles.DrawSolidRectangleWithOutline(m_RectVertices, Color.white * 0.1f, Color.white * 0.4f);
// Vertical guides
if (endPoint < m_CustomToneCurveRect.width / 3)
{
int steps = Mathf.CeilToInt(endPoint);
for (var i = 1; i < steps; i++)
{
DrawLine(i, 0, i, k_CustomToneCurveRangeY, 0.4f, endPoint, m_CustomToneCurveRect, m_LineVertices);
}
}
// Label
Handles.Label(m_CustomToneCurveRect.position + Vector2.right, "Custom Tone Curve", EditorStyles.miniLabel);
// Draw the acual curve
var vcount = 0;
while (vcount < k_CustomToneCurveResolution)
{
float x = endPoint * vcount / (k_CustomToneCurveResolution - 1);
float y = m_HableCurve.Eval(x);
if (y < k_CustomToneCurveRangeY)
{
m_CurveVertices[vcount++] = PointInRect(x, y, endPoint, m_CustomToneCurveRect);
}
else
{
if (vcount > 1)
{
// Extend the last segment to the top edge of the rect.
var v1 = m_CurveVertices[vcount - 2];
var v2 = m_CurveVertices[vcount - 1];
var clip = (m_CustomToneCurveRect.y - v1.y) / (v2.y - v1.y);
m_CurveVertices[vcount - 1] = v1 + (v2 - v1) * clip;
}
break;
}
}
if (vcount > 1)
{
Handles.color = Color.white * 0.9f;
Handles.DrawAAPolyLine(2f, vcount, m_CurveVertices);
}
}
