From 2251c797914c9f4681798ff378c792a02a224ada Mon Sep 17 00:00:00 2001
From: Rodrigo Braz Monteiro <zeratul@cellosoft.com>
Date: Wed, 4 Jul 2007 07:26:24 +0000
Subject: [PATCH] Added support for origin dragging.

Originally committed to SVN as r1352.
---
 aegisub/gl_wrap.cpp          | 25 +++++++++++++++++++++++++
 aegisub/gl_wrap.h            |  1 +
 aegisub/visual_feature.cpp   | 18 ++++++++++++++++++
 aegisub/visual_feature.h     |  1 +
 aegisub/visual_tool_drag.cpp | 19 ++++++++++++++++++-
 5 files changed, 63 insertions(+), 1 deletion(-)

diff --git a/aegisub/gl_wrap.cpp b/aegisub/gl_wrap.cpp
index 228a873e7..eee180b8b 100644
--- a/aegisub/gl_wrap.cpp
+++ b/aegisub/gl_wrap.cpp
@@ -135,6 +135,31 @@ void OpenGLWrapper::DrawRectangle(float x1,float y1,float x2,float y2) {
 }
 
 
+/////////////////
+// Draw triangle
+void OpenGLWrapper::DrawTriangle(float x1,float y1,float x2,float y2,float x3,float y3) {
+	// Fill
+	if (a2 != 0.0) {
+		SetModeFill();
+		glBegin(GL_TRIANGLES);
+			glVertex2f(x1,y1);
+			glVertex2f(x2,y2);
+			glVertex2f(x3,y3);
+		glEnd();
+	}
+
+	// Outline
+	if (a1 != 0.0) {
+		SetModeLine();
+		glBegin(GL_LINE_LOOP);
+			glVertex2f(x1,y1);
+			glVertex2f(x2,y2);
+			glVertex2f(x3,y3);
+		glEnd();
+	}
+}
+
+
 ///////////////////////
 // Draw ring (annulus)
 void OpenGLWrapper::DrawRing(float x,float y,float r1,float r2,float ar,float arcStart,float arcEnd) {
diff --git a/aegisub/gl_wrap.h b/aegisub/gl_wrap.h
index 3942a3a6d..b3012a4c9 100644
--- a/aegisub/gl_wrap.h
+++ b/aegisub/gl_wrap.h
@@ -64,6 +64,7 @@ public:
 	void DrawCircle(float x,float y,float radius) { DrawEllipse(x,y,radius,radius); }
 	void DrawRectangle(float x1,float y1,float x2,float y2);
 	void DrawRing(float x,float y,float r1,float r2,float ar=1.0f,float arcStart=0.0f,float arcEnd=0.0f);
+	void DrawTriangle(float x1,float y1,float x2,float y2,float x3,float y3);
 
 	static bool UseShaders();
 	static bool IsExtensionSupported(const char *ext);
diff --git a/aegisub/visual_feature.cpp b/aegisub/visual_feature.cpp
index db07c4a35..d0f09d244 100644
--- a/aegisub/visual_feature.cpp
+++ b/aegisub/visual_feature.cpp
@@ -71,6 +71,14 @@ bool VisualDraggableFeature::IsMouseOver(int mx,int my) {
 		return false;
 	}
 
+	// Triangle
+	else if (type == DRAG_BIG_TRIANGLE) {
+		if (my < y-8 || my > y+8) return false;
+		int dx = mx-x;
+		int dy = my-y-8;
+		return (16*dx+9*dy < 0 && 16*dx-9*dy > 0);
+	}
+
 	// Small circle
 	else if (type == DRAG_SMALL_CIRCLE) {
 		int dx = mx-x;
@@ -99,6 +107,16 @@ void VisualDraggableFeature::Draw(OpenGLWrapper *gl) {
 	// Circle
 	else if (type == DRAG_BIG_CIRCLE) {
 		gl->DrawCircle(x,y,8);
+		gl->DrawLine(x,y-16,x,y+16);
+		gl->DrawLine(x-16,y,x+16,y);
+	}
+
+	// Triangle
+	else if (type == DRAG_BIG_TRIANGLE) {
+		gl->DrawTriangle(x-9,y-8,x+9,y-8,x,y+8);
+		gl->DrawLine(x,y-2,x,y-18);
+		gl->DrawLine(x,y-2,x-14,y+6);
+		gl->DrawLine(x,y-2,x+14,y+6);
 	}
 
 	// Small circle
diff --git a/aegisub/visual_feature.h b/aegisub/visual_feature.h
index 2c63baaf2..44d6d2aee 100644
--- a/aegisub/visual_feature.h
+++ b/aegisub/visual_feature.h
@@ -53,6 +53,7 @@ enum DraggableFeatureType {
 	DRAG_NONE,
 	DRAG_BIG_SQUARE,
 	DRAG_BIG_CIRCLE,
+	DRAG_BIG_TRIANGLE,
 	DRAG_SMALL_SQUARE,
 	DRAG_SMALL_CIRCLE
 };
diff --git a/aegisub/visual_tool_drag.cpp b/aegisub/visual_tool_drag.cpp
index 4996b245e..fe8006838 100644
--- a/aegisub/visual_tool_drag.cpp
+++ b/aegisub/visual_tool_drag.cpp
@@ -232,6 +232,18 @@ void VisualToolDrag::PopulateFeatureList() {
 					features[n-1].brother[0] = n-2;
 					features[n-2].brother[0] = n-1;
 				}
+
+				// Create org feature
+				if (torgx != x1 || torgy != y1) {
+					feat.x = torgx;
+					feat.y = torgy;
+					feat.layer = -1;
+					feat.type = DRAG_BIG_TRIANGLE;
+					feat.value = 0;
+					feat.line = diag;
+					feat.lineN = i;
+					features.push_back(feat);
+				}
 			}
 		}
 	}
@@ -256,8 +268,13 @@ void VisualToolDrag::UpdateDrag(VisualDraggableFeature &feature) {
 ///////////////
 // Commit drag
 void VisualToolDrag::CommitDrag(VisualDraggableFeature &feature) {
+	// Origin
+	if (feature.type == DRAG_BIG_TRIANGLE) {
+		SetOverride(_T("\\org"),wxString::Format(_T("(%i,%i)"),feature.x,feature.y));
+	}
+
 	// Position
-	if (feature.brother[0] == -1) {
+	else if (feature.brother[0] == -1) {
 		SetOverride(_T("\\pos"),wxString::Format(_T("(%i,%i)"),feature.x,feature.y));
 	}