init commit

2025-06-11 22:45:11 +08:00
commit 71307f3e53
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+#include <math/dvc_math_util.h>
+#include <math/dvc_matrix4.h>
+#include <math/dvc_vector3.h>
+#include <math/dvc_vector4.h>
+
+#include <gtest/gtest.h>
+#include <glm/glm.hpp>
+#include <glm/gtc/matrix_transform.hpp>
+
+#include "dvt_unit_common.h"
+
+using namespace davinci;
+
+//-------------------------------------------------------------------------------------
+TEST(MathUtil, Basic)
+{
+
+	//lookat view matrix
+	{
+		float dEye[3] = { 0.0f, 4.0f, -10.0f };
+		float dAt[3] = { 0.0f, 1.0f, 0.0f };
+		float dUp[3] = { 0.0f, 1.0f, 0.0f };
+
+		fMatrix4 m1 = MathUtil::lookatRH(
+			fVector3(THREE_ELEMENT(dEye)),
+			fVector3(THREE_ELEMENT(dAt)),
+			fVector3(THREE_ELEMENT(dUp)));
+
+		glm::mat4 gm1 = glm::lookAtRH(glm::vec3(THREE_ELEMENT(dEye)), glm::vec3(THREE_ELEMENT(dAt)), glm::vec3(THREE_ELEMENT(dUp)));
+		EXPECT_EQ_4X4_T(m1, gm1);
+	}
+
+	//lookat view matrix(random)
+	{
+		for (int i = 0; i < 10; i++) {
+			fVector3 dEye, dAt, dUp;
+			do {
+				dEye[0] = _randomFloat(); dEye[1] = _randomFloat(); dEye[2] = _randomFloat();
+				dAt[0] = _randomFloat(); dAt[1] = _randomFloat(); dAt[2] = _randomFloat();
+				dUp[0] = _randomFloat(); dUp[1] = _randomFloat(); dUp[2] = _randomFloat();
+
+			} while ((dEye == dAt) || (dUp == fVector3::ZERO));
+
+			fMatrix4 m1 = MathUtil::lookatRH(
+				fVector3(THREE_ELEMENT(dEye)),
+				fVector3(THREE_ELEMENT(dAt)),
+				fVector3(THREE_ELEMENT(dUp)));
+
+			glm::mat4 gm1 = glm::lookAtRH(glm::vec3(THREE_ELEMENT(dEye)), glm::vec3(THREE_ELEMENT(dAt)), glm::vec3(THREE_ELEMENT(dUp)));
+
+			EXPECT_EQ_4X4_T_APPROX(m1, gm1, std::numeric_limits<float>::epsilon() * 1000);
+		}
+	}
+
+	//perspective
+	{
+		float width = 640.f, height = 480.f;
+
+		fMatrix4 m1 = MathUtil::perspectiveFovRH(MathUtil::PI_DIV4, width / height, 0.01f, 100.f);
+		glm::mat4 gm1 = glm::perspectiveRH(MathUtil::PI_DIV4, width / height, 0.01f, 100.f);
+
+		EXPECT_EQ_4X4_T_APPROX(m1, gm1, std::numeric_limits<float>::epsilon());
+	}
+
+	//perspective(random)
+	{
+		for (int i = 0; i < 10; i++) {
+			float fov = MathUtil::rangeRandom(0.1f, MathUtil::PI);
+			float aspect = MathUtil::rangeRandom(0.1f, 100.f);
+			float zNear = MathUtil::rangeRandom(0.00001f, 0.01f);
+			float zFar = MathUtil::rangeRandom(100.f, 10000.f);
+
+			fMatrix4 m1 = MathUtil::perspectiveFovRH(fov, aspect, zNear, zFar);
+			glm::mat4 gm1 = glm::perspectiveRH(fov, aspect, zNear, zFar);
+
+			EXPECT_EQ_4X4_T_APPROX(m1, gm1, std::numeric_limits<float>::epsilon() * 100);
+		}
+	}
+}