From c9fe85c9f480ac116006296a3e8b0b1feb95bedd Mon Sep 17 00:00:00 2001
From: Elliot Woods <elliot.woods@gmail.com>
Date: Sat, 3 Mar 2012 14:16:39 +0000
Subject: [PATCH] added projectPoint

---
 src/ofxRay/ofProjector.cpp | 7 +++++++
 src/ofxRay/ofProjector.h   | 2 ++
 2 files changed, 9 insertions(+)

diff --git a/src/ofxRay/ofProjector.cpp b/src/ofxRay/ofProjector.cpp
index 6723628..0f7d021 100644
--- a/src/ofxRay/ofProjector.cpp
+++ b/src/ofxRay/ofProjector.cpp
@@ -199,4 +199,11 @@ namespace ofxRay {
 	ofMatrix4x4 Projector::getViewProjectionMatrix() const {
 		return this->getViewMatrix() * this->getProjectionMatrix();
 	}
+
+	//----------
+	ofVec3f Projector::projectPoint(const ofVec3f& point) const {
+		ofVec4f point4(point.x, point.y, point.z, 1.0f);
+		point4 = point4 * this->getViewProjectionMatrix();
+		return ofVec3f(point4.x / point4.w, point4.y / point4.w, point4.z / point4.w);
+	}
 }
\ No newline at end of file
diff --git a/src/ofxRay/ofProjector.h b/src/ofxRay/ofProjector.h
index 0ec774f..b80d066 100644
--- a/src/ofxRay/ofProjector.h
+++ b/src/ofxRay/ofProjector.h
@@ -51,6 +51,8 @@ namespace ofxRay {
 		ofMatrix4x4 getProjectionMatrix() const;
 		ofMatrix4x4 getViewProjectionMatrix() const;
 
+		ofVec3f projectPoint(const ofVec3f& point) const;
+
 	protected:
 		int width;
 		int height;