2025.6.1

exchange/exchangesource/MeshViewer/utils/bounding_box.cpp

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+/***********************************************************************************************************************
+*
+* Copyright (c) 2010 - 2025 by Tech Soft 3D, Inc.
+* The information contained herein is confidential and proprietary to Tech Soft 3D, Inc., and considered a trade secret
+* as defined under civil and criminal statutes. Tech Soft 3D shall pursue its civil and criminal remedies in the event
+* of unauthorized use or misappropriation of its trade secrets. Use of this information by anyone other than authorized
+* employees of Tech Soft 3D, Inc. is granted only under a written non-disclosure agreement, expressly prescribing the
+* scope and manner of such use.
+*
+***********************************************************************************************************************/
+
+#include "bounding_box.h"
+
+namespace utils
+{
+	namespace geometry
+	{
+		void BoundingBox::reset()
+		{
+			min = glm::vec3(std::numeric_limits<float>::max());
+			max = glm::vec3(std::numeric_limits<float>::lowest());
+		}
+		void BoundingBox::add_point(const glm::vec3& point)
+		{
+			min.x = std::min(min.x, point.x);
+			min.y = std::min(min.y, point.y);
+			min.z = std::min(min.z, point.z);
+			max.x = std::max(max.x, point.x);
+			max.y = std::max(max.y, point.y);
+			max.z = std::max(max.z, point.z);
+		};
+		void BoundingBox::add_box(const BoundingBox& box)
+		{
+			add_point(box.min);
+			add_point(box.max);
+		};
+		BoundingBox BoundingBox::transform(const glm::mat4& mat) const
+		{
+			glm::vec3 trsf_min = glm::vec3(mat * glm::vec4(min, 1.));
+			glm::vec3 trsf_max = glm::vec3(mat * glm::vec4(max, 1.));
+			BoundingBox new_box;
+			new_box.add_point(trsf_min);
+			new_box.add_point(trsf_max);
+			return new_box;
+		};
+		void BoundingBox::add_boxes(const BoundingBox& box, const std::vector<glm::mat4>& mat4s)
+		{
+			for (const auto& mat : mat4s)
+			{
+				add_box(box.transform(mat));
+			}
+		};
+		glm::vec3 BoundingBox::diagonal() const
+		{
+			return max - min;
+		}
+		glm::vec3 BoundingBox::center() const
+		{
+			return ( max + min ) / 2.f;
+		}
+		double BoundingBox::size_max() const
+		{
+			double x = fabs(max.x - min.x);
+			double y = fabs(max.y - min.y);
+			double z = fabs(max.z - min.z);
+			if (x > y)
+				return x > z ? x : z;
+			else
+				return y > z ? y : z;
+		}
+	}
+}