GRAPHICS: Add Model::getCenter() and Model::getAbsoluteCenter()

xoreos · Nov 19, 2018 · 04ea958 · 04ea958
1 parent a3b99e4
commit 04ea958
Show file tree

Hide file tree

Showing 2 changed files with 21 additions and 0 deletions.
diff --git a/src/graphics/aurora/model.cpp b/src/graphics/aurora/model.cpp
@@ -216,6 +216,22 @@ void Model::getAbsolutePosition(float &x, float &y, float &z) const {
 	z = _absolutePosition[3][2];
 }
 
+void Model::getCenter(float &x, float &y, float &z) {
+	x = _center[0] * _scale[0];
+	y = _center[1] * _scale[1];
+	z = _center[2] * _scale[2];
+}
+
+void Model::getAbsoluteCenter(float &x, float &y, float &z) {
+	glm::mat4 center = _absolutePosition;
+
+	center = glm::translate(center, glm::vec3(_center[0], _center[1], _center[2]));
+
+	x = center[3][0];
+	y = center[3][1];
+	z = center[3][2];
+}
+
 void Model::setScale(float x, float y, float z) {
 	lockFrameIfVisible();
 

diff --git a/src/graphics/aurora/model.h b/src/graphics/aurora/model.h
@@ -115,6 +115,11 @@ class Model : public GLContainer, public Renderable {
 	/** Set the current position of the model. */
 	void setPosition(float x, float y, float z);
 
+	/** Get the model's center position. */
+	void getCenter(float &x, float &y, float &z);
+	/** Get the model's center position after translate/rotate. */
+	void getAbsoluteCenter(float &x, float &y, float &z);
+
 	/** Scale the model, relative to its current scale. */
 	void scale (float x, float y, float z);
 	/** Rotate the model, relative to its current orientation. */