Initial commit

engines/tetraedge/te/te_camera.h

@@ -0,0 +1,116 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#ifndef TETRAEDGE_TE_TE_CAMERA_H
+#define TETRAEDGE_TE_TE_CAMERA_H
+
+#include "common/path.h"
+#include "common/str.h"
+#include "math/ray.h"
+
+#include "tetraedge/te/te_3d_object2.h"
+#include "tetraedge/te/te_matrix4x4.h"
+#include "tetraedge/te/te_references_counter.h"
+#include "tetraedge/te/te_vector2s32.h"
+#include "tetraedge/te/te_vector2f32.h"
+#include "tetraedge/te/te_vector3f32.h"
+
+namespace Tetraedge {
+
+class TeCamera : public Te3DObject2, public TeReferencesCounter {
+public:
+	TeCamera();
+
+	void apply();
+	void applyProjection();
+	void applyTransformations();
+	void buildOrthoMatrix();
+	void buildPerspectiveMatrix();
+	void buildPerspectiveMatrix2();
+	void buildPerspectiveMatrix3();
+	void draw() override;
+
+	Math::Ray getRay(const TeVector2s32 &pxloc);
+
+	// Syberia 2 redefines loadBin to actually load XML.
+	// We just have a separate function.
+	void loadXml(const Common::Path &path);
+
+	void orthogonalParams(float f1, float f2, float f3, float f4);
+	TeMatrix4x4 projectionMatrix();
+
+	TeVector2f32 projectPoint(const TeVector3f32 &pt);
+	TeVector3f32 projectPoint3f32(const TeVector3f32 &pt);
+
+	static void restore();
+	TeMatrix4x4 transformationMatrix();
+	TeVector3f32 transformCoord(const TeVector3f32 &pt);
+	TeVector3f32 transformPoint2Dto3D(const TeVector3f32 &pt);
+
+	void viewport(int x, int y, uint width, uint height);
+	TeVector2f32 viewportSize() const { return TeVector2f32(_viewportW, _viewportH); }
+
+	TeSignal0Param &onViewportChangedSignal() { return _onViewportChangedSignal; }
+
+	void setFov(float fov) { _fov = fov; }
+	void setOrthoPlanes(float near, float far) {
+		_orthFarVal = far;
+		_orthNearVal = near;
+	}
+	void setProjMatrixType(int matrixType) { _projectionMatrixType = matrixType; }
+	int projMatrixType() const { return _projectionMatrixType; }
+	void setAspectRatio(float val) { _aspectRatio = val; }
+	float orthoNearPlane() const { return _orthNearVal; }
+	float orthoFarPlane() const { return _orthFarVal; }
+	void setOrthoNear(float f) { _orthNearVal = f; }
+	void setOrthoFar(float f) { _orthFarVal = f; }
+	float getViewportHeight() const { return _viewportH; }
+	float getViewportWidth() const { return _viewportW; }
+
+private:
+	void updateProjectionMatrix();
+
+	int _projectionMatrixType; // TODO: Should be an enum.
+	float _orthNearVal;
+	float _orthFarVal;
+	float _fov;
+	float _aspectRatio;
+
+	int _viewportX;
+	int _viewportY;
+	uint _viewportW;
+	uint _viewportH;
+
+	int _transformA;
+
+	float _orthogonalParamL;
+	float _orthogonalParamR;
+	float _orthogonalParamT;
+	float _orthogonalParamB;
+
+	TeMatrix4x4 _projectionMatrix;
+
+	TeSignal0Param _onViewportChangedSignal;
+};
+
+} // end namespace Tetraedge
+
+#endif // TETRAEDGE_TE_TE_CAMERA_H