99 lines
3.0 KiB
C
99 lines
3.0 KiB
C
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// Created by Иван Ильин on 14.01.2021.
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//
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#ifndef ENGINE_CAMERA_H
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#define ENGINE_CAMERA_H
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#include <vector>
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#include "Screen.h"
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#include "Plane.h"
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#include "Mesh.h"
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class Camera : public Object, public Animatable{
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private:
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Point4D p_angleLeftUpLookAt;
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Point4D p_left = Point4D{1, 0, 0, 0}; // internal X
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Point4D p_up = Point4D{0, 1, 0, 0}; // internal Y
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Point4D p_lookAt = Point4D{0, 0, 1, 0}; // internal Z
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Matrix4x4 S; // screen space matrix
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Matrix4x4 P; // projections matrix
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Matrix4x4 V; // camera matrix
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double aspect = 0;
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// To accelerate calculations we can use precalculated matrix that does not chance
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Matrix4x4 SP; // screen-space-projections matrix
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Matrix4x4 VM; // camera-model-animation matrix
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std::vector<Triangle> triangles;
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std::vector<Plane> clipPlanes;
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bool ready = false;
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double w = 0;
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double h = 0;
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public:
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Camera() = default;
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Camera(const Camera& camera) = delete;
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void init(int width, int height, double fov = 110.0, double ZNear = 0.1, double ZFar = 5000.0);
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std::vector<Triangle>& project(Mesh& mesh, Screen::ViewMode mode);
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void record();
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[[nodiscard]] int buffSize() const { return triangles.size(); }
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std::vector<Triangle>& sorted();
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[[nodiscard]] Point4D position() const override { return p_position; }
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[[nodiscard]] Point4D angle() const override { return p_angle; }
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[[nodiscard]] Point4D angleLeftUpLookAt() const { return p_angleLeftUpLookAt; }
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[[nodiscard]] Point4D eye() const { return p_position; }
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[[nodiscard]] Point4D left() const { return p_left; }
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[[nodiscard]] Point4D right() const { return -p_left; }
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[[nodiscard]] Point4D up() const { return p_up; }
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[[nodiscard]] Point4D down() const { return -p_up; }
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[[nodiscard]] Point4D lookAt() const { return p_lookAt; }
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void translate(const Point4D& dv) override {
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p_position += dv;
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if(v_attached.empty())
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return;
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for(const auto& attached : v_attached)
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attached->translate(dv);
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}
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void translate(double dx, double dy, double dz) {
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translate(Point4D{dx, dy, dz});
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}
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void translateToPoint(const Point4D& point);
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void rotateX(double rx);
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void rotateY(double ry);
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void rotateZ(double rz);
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void rotate(double rx, double ry, double rz);
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void rotate(const Point4D& r) override;
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void rotate(const Point4D& v, double rv) override;
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void rotateLeft(double rl);
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void rotateUp(double ru);
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void rotateLookAt(double rlAt);
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// Rotate mesh around XYZ by (rx, ry, rz) radians relative val 'point4D'
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void rotateRelativePoint(const Point4D& s, double rl, double ru, double rlAt);
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// Rotate mesh around XYZ by (r.x, r.y, r.z) radians relative val 'point4D'
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void rotateRelativePoint(const Point4D& s, const Point4D& r) override;
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// Rotate mesh around normalised vector 'v' by 'r' radians relative val 'point4D'
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void rotateRelativePoint(const Point4D& s, const Point4D& v, double r) override;
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};
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#endif //INC_3DZAVR_CAMERA_H
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