CustomCamera QML Type

Defines a Camera with a custom projection matrix. 更多...

import 语句：	import QtQuick3D
继承：	Camera

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特性

• projection : matrix4x4

详细描述

A Camera defines how the content of the 3D scene is projected onto a 2D surface, such as a View3D . A scene needs at least one Camera in order to visualize its contents.

It is possible to position and rotate the Camera like any other spatial Node in the scene. The Node 's location and orientation determines where the Camera is in the scene, and what direction it is facing. The default orientation of the Camera has its forward vector pointing along the negative Z axis and its up vector along the positive Y axis.

The CustomCamera type provides a Camera where the projection matrix can be customized freely.

The following example creates a CustomCamera at position [0, 200, 300] in the scene, with a 30 degree downward pitch, and a custom projection matrix based on custom near and far plane distances, and a custom field of view.

CustomCamera {
    position: Qt.vector3d(0, 200, 300)
    eulerRotation.x: -30
    property real near: 10.0
    property real far: 10000.0
    property real fov: 60.0 * Math.PI / 180.0
    projection: Qt.matrix4x4(Math.cos(fov / 2) / Math.sin(fov / 2) * (window.height / window.width), 0, 0, 0,
                             0, Math.cos(fov / 2) / Math.sin(fov / 2), 0, 0,
                             0, 0, -(near + far) / (far - near), -(2.0 * near * far) / (far - near),
                             0, 0, -1, 0);
}
					

注意： When using CustomCamera, some anti-aliasing modes(Temporal AA and Progressive AA) cannot be applied correctly.

另请参阅 PerspectiveCamera , OrthographicCamera ，和 FrustumCamera .

特性文档编制

projection : matrix4x4

This property defines the CustomCamera 's projection matrix.

内容

• 特性

• 详细描述