feat: hide non-texture OFX params from node graph + host coordinate standardization

Hide non-texture OFX params from node graph
  --------------------------------------------
  OFX plugins like ColorCorrect expose dozens of scalar parameters as
  node inputs, making nodes extremely tall and pushing Source/Mask far
  down. Previously attempted via kInputFlagHidden, but that also hid
  them from the parameter panel.

  Fix: move the filter to NodeViewItem::IsInputValid() instead.
  For OFX plugin nodes (getPluginInstance() != nullptr), only
  kTexture inputs are rendered as ports. Scalar parameters remain
  fully visible in the parameter panel.

  Files: app/widget/nodeview/nodeviewitem.cpp
         app/node/plugins/Plugin.cpp

  Standardize OFX host coordinate system
  --------------------------------------
  Olive's OFX host had partial and inconsistent coordinate handling.

  1. Fix Project coordinate methods
     - getProjectSize() / getProjectExtent() / getProjectOffset()
       now multiply X by pixel_aspect_ratio(), returning canonical
       coordinates per the OFX spec.

  2. Fix Clip default RoD
     - OliveClipInstance::getRegionOfDefinition() default now returns
       {0, 0, width*PAR, height} instead of raw pixel coords.

  3. Add parameter coordinate system conversion
     - DoubleInstance / Double2DInstance / Double3DInstance now check
       _descriptor.getDefaultCoordinateSystem().
     - For kOfxParamCoordinatesNormalised:
         get: internal pixel value -> normalised (divide by extent)
         set: normalised plugin value -> pixel (multiply by extent)
     - DefaultValueForParam() also converts normalised defaults to
       canonical before storing in Node, keeping Olive internal/UI
       values consistently in pixel space.

  Files: app/pluginSupport/OlivePluginInstance.cpp
         app/pluginSupport/OliveClip.cpp
         app/pluginSupport/paraminstance.h
         app/node/plugins/Plugin.cpp

app/node/plugins/Plugin.cpp

@@ -21,6 +21,7 @@
 #include "render/rendermanager.h"
 #include "render/job/pluginjob.h"
 #include "pluginSupport/OlivePluginInstance.h"
+#include "common/Current.h"
 
 #include <algorithm>
 #include <cstring>
@@ -34,6 +35,24 @@
 namespace {
 QHash<QString, QHash<QString, QVariant>> g_plugin_param_defaults;
 
+static bool IsNormalisedCoordSystem(const OFX::Host::Param::Base *param)
+{
+	return param->getDefaultCoordinateSystem() ==
+		   kOfxParamCoordinatesNormalised;
+}
+
+static void GetProjectExtent(double &xSize, double &ySize)
+{
+	auto &vp = Current::getInstance().currentVideoParams();
+	xSize = vp.width() * vp.pixel_aspect_ratio().toDouble();
+	ySize = vp.height();
+}
+
+static double ToCanonical(double normalised, double extent)
+{
+	return extent > 0 ? normalised * extent : normalised;
+}
+
 QVariant DefaultValueForParam(const OFX::Host::Param::Base *param)
 {
 	if (!param) {
@@ -50,7 +69,13 @@ QVariant DefaultValueForParam(const OFX::Host::Param::Base *param)
 		return props.getIntProperty(kOfxParamPropDefault) != 0;
 	}
 	if (ofxType == kOfxParamTypeDouble) {
-		return props.getDoubleProperty(kOfxParamPropDefault);
+		double val = props.getDoubleProperty(kOfxParamPropDefault);
+		if (IsNormalisedCoordSystem(param)) {
+			double xSize, ySize;
+			GetProjectExtent(xSize, ySize);
+			val = ToCanonical(val, xSize);
+		}
+		return val;
 	}
 	if (ofxType == kOfxParamTypeString ||
 		ofxType == kOfxParamTypeStrChoice ||
@@ -81,6 +106,15 @@ QVariant DefaultValueForParam(const OFX::Host::Param::Base *param)
 		if (is_double) {
 			double values[3] = {0.0, 0.0, 0.0};
 			props.getDoublePropertyN(kOfxParamPropDefault, values, count);
+			if (IsNormalisedCoordSystem(param)) {
+				double xSize, ySize;
+				GetProjectExtent(xSize, ySize);
+				values[0] = ToCanonical(values[0], xSize);
+				values[1] = ToCanonical(values[1], ySize);
+				if (count == 3) {
+					values[2] = ToCanonical(values[2], xSize);
+				}
+			}
 			if (count == 2) {
 				return QVector2D(values[0], values[1]);
 			}

app/pluginSupport/OliveClip.cpp

@@ -538,7 +538,8 @@ olive::plugin::OliveClipInstance::getRegionOfDefinition(OfxTime time) const
 	}
 	OfxRectD regionOfDefinition;
 	regionOfDefinition.x1 = regionOfDefinition.y1 = 0;
-	regionOfDefinition.x2 = params_.width();
+	double par = params_.pixel_aspect_ratio().toDouble();
+	regionOfDefinition.x2 = params_.width() * par;
 	regionOfDefinition.y2 = params_.height();
 	return regionOfDefinition;
 }

app/pluginSupport/OlivePluginInstance.cpp

@@ -276,18 +276,21 @@ OfxStatus OlivePluginInstance::clearPersistentMessage()
 }
 void OlivePluginInstance::getProjectSize(double &xSize, double &ySize) const
 {
-	xSize =params_.width();
-	ySize =params_.height();
+	double par = params_.pixel_aspect_ratio().toDouble();
+	xSize = params_.width() * par;
+	ySize = params_.height();
 }
 void OlivePluginInstance::getProjectOffset(double &xOffset, double &yOffset) const
 {
-	xOffset =params_.x();
-	yOffset =params_.y();
+	double par = params_.pixel_aspect_ratio().toDouble();
+	xOffset = params_.x() * par;
+	yOffset = params_.y();
 }
 void OlivePluginInstance::getProjectExtent(double &xSize, double &ySize) const
 {
-	xSize =params_.width();
-	ySize =params_.height();
+	double par = params_.pixel_aspect_ratio().toDouble();
+	xSize = params_.width() * par;
+	ySize = params_.height();
 }
 double OlivePluginInstance::getProjectPixelAspectRatio() const
 {

app/pluginSupport/paraminstance.h

@@ -32,12 +32,38 @@
 #include "node/plugins/Plugin.h"
 #include "core.h"
 #include "undo/undocommand.h"
+#include "common/Current.h"
 #include <iostream>
 #include <qlogging.h>
 namespace olive
 {
 namespace plugin
 {
+
+inline bool IsNormalisedCoordinateSystem(
+	const OFX::Host::Param::Descriptor &descriptor)
+{
+	return descriptor.getDefaultCoordinateSystem() ==
+		   kOfxParamCoordinatesNormalised;
+}
+
+inline void GetProjectExtent(double &xSize, double &ySize)
+{
+	auto &vp = Current::getInstance().currentVideoParams();
+	xSize = vp.width() * vp.pixel_aspect_ratio().toDouble();
+	ySize = vp.height();
+}
+
+inline double ToNormalised(double canonical, double extent)
+{
+	return extent > 0 ? canonical / extent : canonical;
+}
+
+inline double ToCanonical(double normalised, double extent)
+{
+	return extent > 0 ? normalised * extent : normalised;
+}
+
 inline QString ParamChangeLabel(const OFX::Host::Param::Descriptor &descriptor)
 {
 	return QStringLiteral("Change %1")
@@ -185,6 +211,11 @@ public:
 		QVariant variant = node->GetStandardValue(_descriptor.getName().c_str());
 		if (variant.canConvert<double>()) {
 			data = variant.toDouble();
+			if (IsNormalisedCoordinateSystem(_descriptor)) {
+				double xSize, ySize;
+				GetProjectExtent(xSize, ySize);
+				data = ToNormalised(data, xSize);
+			}
 			return kOfxStatOK;
 		}
 		data = 0.0;
@@ -201,6 +232,11 @@ public:
 								 rational::fromDouble(time));
 		if (variant.canConvert<double>()) {
 			data = variant.toDouble();
+			if (IsNormalisedCoordinateSystem(_descriptor)) {
+				double xSize, ySize;
+				GetProjectExtent(xSize, ySize);
+				data = ToNormalised(data, xSize);
+			}
 			return kOfxStatOK;
 		}
 		data = 0.0;
@@ -213,8 +249,14 @@ public:
 			has_value_ = true;
 			return kOfxStatOK;
 		}
+		double val = data;
+		if (IsNormalisedCoordinateSystem(_descriptor)) {
+			double xSize, ySize;
+			GetProjectExtent(xSize, ySize);
+			val = ToCanonical(val, xSize);
+		}
 		SplitValue split = NodeValue::split_normal_value_into_track_values(
-			NodeValue::kFloat, data);
+			NodeValue::kFloat, val);
 		auto command = new NodeParamSetSplitStandardValueCommand(
 			NodeInput(node.get(), _descriptor.getName().c_str()), split);
 		SubmitUndoCommand(node, command, ParamChangeLabel(_descriptor));
@@ -227,10 +269,16 @@ public:
 			has_value_ = true;
 			return kOfxStatOK;
 		}
+		double val = data;
+		if (IsNormalisedCoordinateSystem(_descriptor)) {
+			double xSize, ySize;
+			GetProjectExtent(xSize, ySize);
+			val = ToCanonical(val, xSize);
+		}
 		auto command = new MultiUndoCommand();
 		Node::SetValueAtTime(
 			NodeInput(node.get(), _descriptor.getName().c_str()),
-			rational::fromDouble(time), data, 0, command, true);
+			rational::fromDouble(time), val, 0, command, true);
 		SubmitUndoCommand(node, command, ParamChangeLabel(_descriptor));
 		return kOfxStatOK;
 	}
@@ -661,6 +709,12 @@ public:
 				.value<QVector2D>();
 		x = static_cast<double>(vec.x());
 		y = static_cast<double>(vec.y());
+		if (IsNormalisedCoordinateSystem(_descriptor)) {
+			double xSize, ySize;
+			GetProjectExtent(xSize, ySize);
+			x = ToNormalised(x, xSize);
+			y = ToNormalised(y, ySize);
+		}
 		return kOfxStatOK;
 	}
 	OfxStatus get(OfxTime time,double& x,double& y)
@@ -680,6 +734,12 @@ public:
 				.value<QVector2D>();
 		x = static_cast<double>(vec.x());
 		y = static_cast<double>(vec.y());
+		if (IsNormalisedCoordinateSystem(_descriptor)) {
+			double xSize, ySize;
+			GetProjectExtent(xSize, ySize);
+			x = ToNormalised(x, xSize);
+			y = ToNormalised(y, ySize);
+		}
 		return kOfxStatOK;
 	}
 	OfxStatus set(double x,double y)
@@ -690,8 +750,15 @@ public:
 			has_value_ = true;
 			return kOfxStatOK;
 		}
+		double xv = x, yv = y;
+		if (IsNormalisedCoordinateSystem(_descriptor)) {
+			double xSize, ySize;
+			GetProjectExtent(xSize, ySize);
+			xv = ToCanonical(xv, xSize);
+			yv = ToCanonical(yv, ySize);
+		}
 		SplitValue split = NodeValue::split_normal_value_into_track_values(
-			NodeValue::kVec2, QVector2D(x, y));
+			NodeValue::kVec2, QVector2D(xv, yv));
 		auto command = new NodeParamSetSplitStandardValueCommand(
 			NodeInput(node.get(), _descriptor.getName().c_str()), split);
 		SubmitUndoCommand(node, command, ParamChangeLabel(_descriptor));
@@ -705,12 +772,19 @@ public:
 			has_value_ = true;
 			return kOfxStatOK;
 		}
+		double xv = x, yv = y;
+		if (IsNormalisedCoordinateSystem(_descriptor)) {
+			double xSize, ySize;
+			GetProjectExtent(xSize, ySize);
+			xv = ToCanonical(xv, xSize);
+			yv = ToCanonical(yv, ySize);
+		}
 		auto command = new MultiUndoCommand();
 		const QString name = _descriptor.getName().c_str();
 		Node::SetValueAtTime(NodeInput(node.get(), name), rational::fromDouble(time),
-							 x, 0, command, true);
+							 xv, 0, command, true);
 		Node::SetValueAtTime(NodeInput(node.get(), name), rational::fromDouble(time),
-							 y, 1, command, true);
+							 yv, 1, command, true);
 		SubmitUndoCommand(node, command, ParamChangeLabel(_descriptor));
 		return kOfxStatOK;
 	}
@@ -844,6 +918,13 @@ public:
 		x = static_cast<double>(vec.x());
 		y = static_cast<double>(vec.y());
 		z = static_cast<double>(vec.z());
+		if (IsNormalisedCoordinateSystem(_descriptor)) {
+			double xSize, ySize;
+			GetProjectExtent(xSize, ySize);
+			x = ToNormalised(x, xSize);
+			y = ToNormalised(y, ySize);
+			z = ToNormalised(z, xSize);
+		}
 		return kOfxStatOK;
 	}
 	OfxStatus get(OfxTime time,double& x,double& y,double& z)
@@ -865,6 +946,13 @@ public:
 		x = static_cast<double>(vec.x());
 		y = static_cast<double>(vec.y());
 		z = static_cast<double>(vec.z());
+		if (IsNormalisedCoordinateSystem(_descriptor)) {
+			double xSize, ySize;
+			GetProjectExtent(xSize, ySize);
+			x = ToNormalised(x, xSize);
+			y = ToNormalised(y, ySize);
+			z = ToNormalised(z, xSize);
+		}
 		return kOfxStatOK;
 	}
 	OfxStatus set(double x,double y,double z)
@@ -876,8 +964,16 @@ public:
 			has_value_ = true;
 			return kOfxStatOK;
 		}
+		double xv = x, yv = y, zv = z;
+		if (IsNormalisedCoordinateSystem(_descriptor)) {
+			double xSize, ySize;
+			GetProjectExtent(xSize, ySize);
+			xv = ToCanonical(xv, xSize);
+			yv = ToCanonical(yv, ySize);
+			zv = ToCanonical(zv, xSize);
+		}
 		SplitValue split = NodeValue::split_normal_value_into_track_values(
-			NodeValue::kVec3, QVector3D(x, y, z));
+			NodeValue::kVec3, QVector3D(xv, yv, zv));
 		auto command = new NodeParamSetSplitStandardValueCommand(
 			NodeInput(node.get(), _descriptor.getName().c_str()), split);
 		SubmitUndoCommand(node, command, ParamChangeLabel(_descriptor));
@@ -892,14 +988,22 @@ public:
 			has_value_ = true;
 			return kOfxStatOK;
 		}
+		double xv = x, yv = y, zv = z;
+		if (IsNormalisedCoordinateSystem(_descriptor)) {
+			double xSize, ySize;
+			GetProjectExtent(xSize, ySize);
+			xv = ToCanonical(xv, xSize);
+			yv = ToCanonical(yv, ySize);
+			zv = ToCanonical(zv, xSize);
+		}
 		auto command = new MultiUndoCommand();
 		const QString name = _descriptor.getName().c_str();
 		Node::SetValueAtTime(NodeInput(node.get(), name),
-							 rational::fromDouble(time), x, 0, command, true);
+							 rational::fromDouble(time), xv, 0, command, true);
 		Node::SetValueAtTime(NodeInput(node.get(), name),
-							 rational::fromDouble(time), y, 1, command, true);
+							 rational::fromDouble(time), yv, 1, command, true);
 		Node::SetValueAtTime(NodeInput(node.get(), name),
-							 rational::fromDouble(time), z, 2, command, true);
+							 rational::fromDouble(time), zv, 2, command, true);
 		SubmitUndoCommand(node, command, ParamChangeLabel(_descriptor));
 		return kOfxStatOK;
 	}

app/widget/nodeview/nodeviewitem.cpp

@@ -31,6 +31,7 @@
 #include "config/config.h"
 #include "core.h"
 #include "node/nodeundo.h"
+#include "node/value.h"
 #include "pluginSupport/OlivePluginInstance.h"
 #include "nodeview.h"
 #include "nodeviewscene.h"
@@ -753,7 +754,17 @@ void NodeViewItem::UpdateOutputConnectorPosition()
 
 bool NodeViewItem::IsInputValid(const QString &input)
 {
-	return node_->IsInputConnectable(input) && !node_->IsInputHidden(input);
+	if (!node_->IsInputConnectable(input) || node_->IsInputHidden(input)) {
+		return false;
+	}
+	// For OFX plugin nodes, only show texture inputs in the node graph
+	// to avoid excessively tall nodes with dozens of scalar parameters.
+	// Scalar parameters are still visible in the parameter panel.
+	if (node_->getPluginInstance() != nullptr &&
+		node_->GetInputDataType(input) != NodeValue::kTexture) {
+		return false;
+	}
+	return true;
 }
 
 void NodeViewItem::SetRectSize(int height_units)