CN113436344A - Display method and system of reference view and image display equipment - Google Patents
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Abstract
The invention discloses a display method, a system and an image display device of a reference view, wherein the method comprises the following steps: receiving an operation instruction for displaying a target view in a current view, and rendering the content of the target view into an off-screen buffer area; adding a target node in the scene of the current view, and loading rendering data in the off-screen buffer area into the target node as a texture map; rendering a scene containing the current view of the target node to display a reference view of the target view in the current view. According to the technical scheme provided by the invention, a plurality of different views can be displayed in the same interface.
Description
Technical Field
The invention relates to the technical field of computer aided design, in particular to a display method and a display system of a reference view and image display equipment.
Background
In existing building design software, the building can be viewed from different angles. For example, the same building may be viewed from a planar, elevational, profile, or the like. Currently, designers often edit views from different angles under different interfaces. However, in the process of building design, it is likely that a plurality of views from different viewing angles need to be observed at the same time, so a method capable of simultaneously displaying a plurality of different views in one interface is needed.
Disclosure of Invention
In view of this, embodiments of the present invention provide a display method and system for a reference view, and an image display device, which can display a plurality of different views in the same interface.
One aspect of the present invention provides a display method of a reference view, including: receiving an operation instruction for displaying a target view in a current view, and rendering the content of the target view into an off-screen buffer area; adding a target node in the scene of the current view, and loading rendering data in the off-screen buffer area into the target node as a texture map; rendering a scene containing the current view of the target node to display a reference view of the target view in the current view.
When the target view needs to be displayed in the current view, the content of the target view may be rendered into the off-screen buffer first. The content in the off-screen buffer area is invisible to a user, and the rendering data in the off-screen buffer area is pasted to the target node and the target node is added into the scene of the current view, so that the content in the target node can be rendered together when the scene of the current view is rendered. In this way, it is possible to simultaneously display the contents of other views in the current view.
In one embodiment, rendering the content of the target view into an off-screen buffer comprises: creating a new scene corresponding to the target view, and determining an object to be displayed in the new scene; and determining a display area of the target view in the current view, and rendering the object to be displayed to an off-screen buffer area according to the size of the display area.
And rendering the object to be displayed in the target view according to the display area of the target view in the current view, so that the object to be displayed can be completely viewed in the current view.
In one embodiment, the method further comprises: after the new scene is created, if the target view has a history scene, the new scene shares a scene tree in the history scene, and the camera observation directions of the new scene and the history scene are kept consistent.
In order to reduce redundant data, if the historical scene already exists in the target view, the newly-built scene and the historical scene can share a scene tree, and the view can be normally displayed when the scene tree is shared by keeping the camera observation directions of the newly-built scene and the historical scene consistent.
In one embodiment, the determining the object to be displayed in the new scene includes: if the cutting frame is opened in the target view, taking an object in an area defined by the cutting frame as an object to be displayed; and if the cutting frame is not opened in the target view, taking the object limited by the bounding box of the newly-built scene as the object to be displayed.
When the object to be displayed is determined, different objects can be selected according to whether the cutting frame is opened or not, so that the method is suitable for different situations in practical application.
In one embodiment, when adding a target node in the scene of the current view, the method further comprises: setting a hierarchical position of the target node to be at a lowest level in the scene of the current view such that rendering data in the target node is rendered first.
By locating the target node at the bottommost layer, information such as subsequently added labels can be floated on the reference view in the current view, so that the added information such as labels cannot be blocked by the reference view.
In one embodiment, rendering the scene containing the current view of the target node comprises: rendering a view background in a window displaying a reference view and rendering data in the target node on the view background; and the rendering data in the target node is subjected to pixel value mixing with the view background so as to transparentize the area except the reference view in the window.
The areas except the reference view in the window are made transparent, so that original content in the current view cannot be shielded by the whole window, and the visual effect of the current view can be improved.
In one embodiment, in rendering a scene containing the current view of the target node, the method further comprises: acquiring an area view covered by a window displaying the reference view in the current view, and rendering the area view as a view background in the window; rendering the rendering data in the target node on the view background.
The original area view in the current view is used as the background of the window for displaying, so that the original content in the current view can be normally seen under the condition that the background in the window is not required to be transparent, and the visual effect of the current view can be improved.
In one embodiment, after displaying the reference view of the target view in the current view, the method further comprises: if the reference view displayed in the current view is updated, synchronizing the updated content into the target view; and if the target view is updated, synchronizing the updated content to the reference view displayed in the current view.
The contents in the target view and the reference view can be updated synchronously, so that the consistency of the contents in the target view and the reference view is ensured.
In one embodiment, the method further comprises: if a plurality of different reference views are displayed in the current view, each reference view has a rendering priority; when the display areas of the multiple reference views are overlapped, the reference view with higher rendering priority overlaps the reference view with lower rendering priority in the overlapping area.
By assigning respective rendering priorities to different reference views, the overlay logic during overlapping can be determined, and the rendering process of the reference views can be ensured to be normally performed.
In another aspect, the present invention provides a display system of a reference view, the system including: the off-screen rendering unit is used for receiving an operation instruction for displaying a target view in a current view and rendering the content of the target view into an off-screen buffer area; a node setting unit, configured to add a target node in the scene of the current view, and load rendering data in the off-screen buffer area into the target node as a texture map; a reference display unit for rendering a scene containing the current view of the target node to display a reference view of the target view in the current view.
Another aspect of the present invention also provides an image display apparatus including a memory for storing a computer program and a processor, wherein the computer program, when executed by the processor, implements the above-described reference view display method.
In another aspect, the present invention further provides a computer storage medium for storing a computer program, which when executed by a processor, implements the above-described display method of the reference view.
Drawings
The features and advantages of the present invention will be more clearly understood by reference to the accompanying drawings, which are illustrative and not to be construed as limiting the invention in any way, and in which:
FIG. 1 is a diagram illustrating the steps of a display method for a referenced view in one embodiment of the present invention;
FIG. 2 illustrates a functional block diagram of a display system with referenced views in one embodiment of the present invention;
fig. 3 shows a schematic configuration diagram of an image display apparatus in one embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of the present invention.
The display method of the reference view can be applied to image processing software and can also be applied to electronic equipment with an image processing function. Referring to fig. 1, a method for displaying a reference view according to an embodiment of the present application may include the following steps.
S1: receiving an operation instruction for displaying a target view in a current view, and rendering the content of the target view into an off-screen buffer.
In this embodiment, the architectural design software may have a function of displaying another view in the current view, and this function may be triggered by a function key. For example, when the user clicks the function button, the architectural design software may receive an operation instruction characterizing the display of the target view in the current view. In response to the operation instruction, the architectural design software may present a prompt to the user, which may be, for example, "please select the background view and the reference view". The background view may be the current view, and the reference view may be the content displayed in the current view by the target view. In this way, reference views of other views can be displayed in the current view. These other views, which are referenced by the current view, may be the target view in step S1. In general, one or more windows may be included in a current view, within which reference views of other views may be displayed.
In this embodiment, when the target view needs to be displayed in the current view, the content of the target view may be rendered into the off-screen buffer. The off-screen buffer may be an area in the cache into which content rendered is not visible to the user. In a specific application example, the content of the target view can be rendered into an object defined by the WebGLRenderTarget in a WebGLRenderer manner, or can be rendered into a frame buffer customized by the GPU. Wherein, the object defined by the WebGLRenderTarget, or the frame buffer defined by the GPU can be used as the off-screen buffer.
Consider that views are typically rendered through a scene. In particular, the scene may be a space for viewing a view. In a scene, a tree-shaped data structure maintained by a rendering engine may be included, which may be referred to as a scene tree. The scene tree may include a plurality of nodes, data to be rendered in the view may be loaded into the corresponding nodes first, and then data in each node in the scene tree is rendered, so that the view in the scene may be displayed on the screen.
In one embodiment, when rendering the content of the target view into the off-screen buffer, a new scene corresponding to the target view may be created first. Under the new scene, the object to be displayed in the target view can be determined. The object to be displayed may refer to an object displayed in a window of the current view. For example, the newly created scene of the target view includes a top view of a cell, and in the view of the current view, only the top view of a certain building may need to be displayed, so that the building can be used as an object to be displayed in the newly created scene.
In practical application, if a cropping frame is opened in the target view, the cropping frame can determine an object to be displayed in the target view by means of picture cropping. For example, if content within a region in the target view currently needs to be displayed, then the region may be defined in the target view using a crop box. In this way, the object in the area defined by the crop box can be used as the object to be displayed.
In another practical application, if the crop box is not opened in the target view, the object in the target view cannot be selected conveniently. In this case, the entirety of the target view may be taken as the object to be displayed. Generally, in a new scene, an object to be displayed is often defined by a bounding box. For example, if a building is shown in a new scene, the bounding box may be a cuboid that just covers the building. Of course, in practical applications, the bounding box is background data in the image processing software and is not visible to the user. Under the condition that the target view does not open the cutting box, the object defined by the bounding box of the newly-built scene can be used as the object to be displayed.
Therefore, when the object to be displayed is determined, different objects can be selected according to whether the cutting frame is opened or not, and the method and the device are suitable for different situations in practical application.
In this embodiment, after the object to be displayed is determined in the new scene, the content of the object to be displayed may be rendered into the off-screen buffer. Considering that the content in the off-screen buffer eventually needs to be displayed in the current view, the display area of the object to be displayed in the off-screen buffer should be consistent with the display area in the current view. In view of this, the display area of the target view in the current view may be determined, which may be determined by the size of the window in the current view. After the overlay area of the window in the current view is read, the overlay area can be used as the display area of the target view in the current view. Subsequently, the content of the object to be displayed may be rendered into the off-screen buffer according to the size of the display area.
Therefore, the object to be displayed in the target view is rendered according to the display area of the target view in the current view, and the object to be displayed can be completely viewed in the current view.
In one embodiment, when creating a new scene of a target view, a scene tree under the new scene is generally required to be initialized. In practical applications, the target view may already be opened in a certain window of the image processing software, so that when a new scene of the target view is created, the target view actually has a history of scenes in the past. In order to reduce the redundant data amount, the scene tree does not need to be initialized for the new scene, and the scene tree in the historical scene can be shared.
In this embodiment, after the new scene shares the scene tree with the historical scene, the camera viewing direction of the new scene needs to be determined. By adjusting the viewing direction of the camera, the user can view the object to be displayed in the target view from different angles. In the case of sharing a scene tree, a user usually views a target view from an opened window, and thus, in order to keep consistent with what the user views, the camera viewing direction of a newly created scene should keep consistent with the camera viewing direction of a historical scene. Thus, the content of the reference view displayed in the current view is synchronized with the content displayed in the opened window. From the above, in order to reduce redundant data, if a historical scene already exists in a target view, a newly-built scene may share a scene tree with the historical scene, and the viewing directions of cameras of the newly-built scene and the historical scene are kept consistent, so that the view can be normally displayed when the scene tree is shared.
In an embodiment, if there is no historical scene in the target view, a scene tree needs to be initialized for the new scene, and meanwhile, a camera viewing direction of the new scene may be determined by a user, and the user may determine an object to be displayed directly in the new scene, so as to render the object to be displayed into an off-screen buffer.
S2: and adding a target node in the scene of the current view, and loading rendering data in the off-screen buffer area into the target node as a texture map.
In the present embodiment, rendering data in the off-screen buffer is invisible to the user, and in order to display an object to be displayed in the target view in the current view, the rendering data in the off-screen buffer may be loaded as a texture (texture) into one target node. Specifically, the attributes of the target node may be adjusted according to the texture. The attribute of the target node may be a shape, a hierarchical position, a presentation manner, and the like. In practical applications, the view in the current view is usually rectangular, so the target node can be set as a rectangular node. Of course, if the window is of another shape, the target node may be set to the node of the adapted shape. In addition, after the referenced view is displayed in the window, information such as annotations may need to be added to the referenced view, and therefore, the hierarchical position of the target node may be set to be located at the lowest layer of the scene, so that rendering data in the target node may be rendered first, information such as subsequently added annotations may float above the referenced view, and the referenced view may not obscure the annotations.
When a window in the current view displays the reference view, a view background is usually rendered in the window, and then the content of the reference view is rendered on the view background. For example, if the content of the reference view is a top view of a building, when the top view is displayed in the window of the current view, a solid view background (e.g., black) is rendered in the window, and then the top view of the building is rendered on the view background. If the content in a window is exposed in this manner, a distinct boundary may appear between the window and the current view. In order to improve the display effect of the picture, the display mode of the target node may be set to start alpha blending. After alpha blending is turned on, the view background is rendered in the window in which the referenced view is displayed, although the rendered data in the target node is then rendered on the view background. But in this process, the rendering data in the target node is pixel-value blended with the view background. The specific process of pixel value blending may be: and carrying out pixel value operation on pixel points at the same positions on the reference view and the view background, wherein aiming at the pixel points in the reference view, the result after the pixel value operation can be to normally display the pixel points, and aiming at the pixel points outside the reference view, the result after the pixel value operation can be to transparentize the pixel points. Thus, after pixel value blending, the regions of the window other than the referenced view are made transparent. For example, the current reference view shows a top view of a building, and only the top view of the building is displayed in the window of the current view, and other parts in the window are transparent. In this way, the content of the current view can be directly viewed through the window, and the reference view is equivalent to being merged into the current view and floating on the surface of the current view, and is not blocked by the content of the current view. Obvious boundaries do not exist between the window and the current view, original contents in the current view cannot be shielded by the whole window, and therefore the visual effect of the current view can be improved.
In another embodiment, if the same transparency effect is to be achieved in order to avoid opening the data operation process caused by alpha blending, the original content in the current view can be rendered in the window as the view background. Specifically, an area view covered by a window displaying the reference view may be acquired in the current view, and then rendered as a view background in the window. Thus, the view background is consistent with the content of the original current view in terms of visual effect, and a window existing on the current view is not perceived. The rendered data in the target node may then be rendered over the view background such that the content of the referenced view floats above the view background, while the original content of the current view remains displayed in the window for areas outside of the referenced view. Therefore, the original content in the current view can be normally seen under the condition that the background in the window is not required to be transparent, and the visual effect of the current view can be improved.
In this embodiment, after the rendering data in the off-screen buffer is loaded into the target node as a texture, the target node may be added to a corresponding position in the scene of the current view according to the position of the window in the current view. Specifically, the target node may be added to the scene tree of the current view. In practical applications, the window in the current view is not usually tilted, but remains in a fixed shape, so the target node also needs to be always oriented towards the screen. In a specific application example, the target node may be a rectangular node always oriented to the screen, and the rectangular node is located at the lowest layer of the scene of the current view, and at the same time, the rectangular node may turn on the alpha blending function.
In one embodiment, it is contemplated that multiple windows may be simultaneously available in the same current view, each of which may have a corresponding reference view displayed therein. If the positions of the windows overlap, the rendering priority of each reference view needs to be specified. Wherein the reference view with the higher rendering priority is rendered earlier in the current view. In this way, when the display areas of the multiple reference views overlap, the reference view with higher rendering priority is covered by the reference view with lower rendering priority in the overlapping area. In this way, by assigning respective rendering priorities to different reference views, the overlay logic during overlapping can be determined, and the rendering process of the reference views can be ensured to be normally performed.
S3: rendering a scene containing the current view of the target node to display a reference view of the target view in the current view.
In this embodiment, after the target node is added to the scene of the current view, the scene of the current view including the target node may be rendered. Specifically, for a scene tree in a scene of a current view, rendering data in each node may be rendered in sequence according to an attribute of each node. In this way, the rendering data in the node can be finally shown on the screen. The original content of the current view can be shown on the screen, and the content of each reference view can be displayed in the window of the current view.
In one embodiment, a user may update the content of a reference view when viewing a current view that contains the reference view. For example, the camera viewing direction of the reference view may be adjusted, the structure in the reference view may be modified, and information such as a label may be added to the reference view. Since the reference view corresponds to the scene of the target view in the background, when the reference view is updated, the updated content is synchronized to the scene of the target view, so that the target view is also changed synchronously. Similarly, if the content in the target view is updated, the content in the target node is updated synchronously, so that the updated content of the target view is finally synchronized to the reference view displayed in the current view. The contents in the target view and the reference view can be updated synchronously, so that the consistency of the contents in the target view and the reference view is ensured.
Therefore, according to the technical scheme provided by the application, when the target view needs to be displayed in the current view, the content of the target view can be rendered into the off-screen buffer area. The content in the off-screen buffer area is invisible to a user, and the rendering data in the off-screen buffer area is pasted to the target node and the target node is added into the scene of the current view, so that the content in the target node can be rendered together when the scene of the current view is rendered. In this way, it is possible to simultaneously display the contents of other views in the current view.
Referring to fig. 2, an embodiment of the present application further provides a display system of a reference view, including:
the off-screen rendering unit is used for receiving an operation instruction for displaying a target view in a current view and rendering the content of the target view into an off-screen buffer area;
a node setting unit, configured to add a target node in the scene of the current view, and load rendering data in the off-screen buffer area into the target node as a texture map;
a reference display unit for rendering a scene containing the current view of the target node to display a reference view of the target view in the current view.
Referring to fig. 3, an embodiment of the present application further provides an image display apparatus, where the image display apparatus includes a memory and a processor, the memory is used for storing a computer program, and the computer program, when executed by the processor, implements the above-mentioned display method for the reference view.
The processor may be a Central Processing Unit (CPU). The Processor may also be other general purpose processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs) or other Programmable logic devices, discrete Gate or transistor logic devices, discrete hardware components, or a combination thereof.
The memory, which is a non-transitory computer readable storage medium, may be used to store non-transitory software programs, non-transitory computer executable programs, and modules, such as program instructions/modules corresponding to the methods of the embodiments of the present invention. The processor executes various functional applications and data processing of the processor by executing non-transitory software programs, instructions and modules stored in the memory, that is, the method in the above method embodiment is realized.
The memory may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data created by the processor, and the like. Further, the memory may include high speed random access memory, and may also include non-transitory memory, such as at least one disk storage device, flash memory device, or other non-transitory solid state storage device. In some embodiments, the memory optionally includes memory located remotely from the processor, and such remote memory may be coupled to the processor via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
An embodiment of the present application also provides a computer storage medium for storing a computer program, which when executed by a processor, implements the above-described method for displaying a reference image.
It will be understood by those skilled in the art that all or part of the processes of the methods of the above embodiments may be implemented by a computer program, which can be stored in a computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. The storage medium may be a magnetic Disk, an optical Disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a Flash Memory (Flash Memory), a Hard Disk (Hard Disk Drive, abbreviated as HDD), a Solid State Drive (SSD), or the like; the storage medium may also comprise a combination of memories of the kind described above.
Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations fall within the scope defined by the appended claims.
Claims (12)
1. A display method of a reference view, the method comprising:
receiving an operation instruction for displaying a target view in a current view, and rendering the content of the target view into an off-screen buffer area;
adding a target node in the scene of the current view, and loading rendering data in the off-screen buffer area into the target node as a texture map;
rendering a scene containing the current view of the target node to display a reference view of the target view in the current view.
2. The method of claim 1, wherein rendering the content of the target view into an off-screen buffer comprises:
creating a new scene corresponding to the target view, and determining an object to be displayed in the new scene;
and determining a display area of the target view in the current view, and rendering the object to be displayed to an off-screen buffer area according to the size of the display area.
3. The method of claim 2, further comprising:
after the new scene is created, if the target view has a history scene, the new scene shares a scene tree in the history scene, and the camera observation directions of the new scene and the history scene are kept consistent.
4. The method of claim 2, wherein determining the object to be displayed in the new scene comprises:
if the cutting frame is opened in the target view, taking an object in an area defined by the cutting frame as an object to be displayed;
and if the cutting frame is not opened in the target view, taking the object limited by the bounding box of the newly-built scene as the object to be displayed.
5. The method of claim 1, wherein when adding a target node in the scene of the current view, the method further comprises:
setting a hierarchical position of the target node to be at a lowest level in the scene of the current view such that rendering data in the target node is rendered first.
6. The method of claim 1, wherein rendering the scene containing the current view of the target node comprises:
rendering a view background in a window displaying a reference view and rendering data in the target node on the view background; and the rendering data in the target node is subjected to pixel value mixing with the view background so as to transparentize the area except the reference view in the window.
7. The method of claim 1, wherein in rendering a scene containing the current view of the target node, the method further comprises:
acquiring an area view covered by a window displaying the reference view in the current view, and rendering the area view as a view background in the window;
rendering the rendering data in the target node on the view background.
8. The method of claim 1, wherein after displaying the reference view of the target view in the current view, the method further comprises:
if the reference view displayed in the current view is updated, synchronizing the updated content into the target view;
and
and if the target view is updated, synchronizing the updated content to the reference view displayed in the current view.
9. The method of claim 1, further comprising:
if a plurality of different reference views are displayed in the current view, each reference view has a rendering priority; when the display areas of the multiple reference views are overlapped, the reference view with higher rendering priority is covered by the reference view with lower rendering priority in the overlapping area.
10. A display system for referencing a view, the system comprising:
the off-screen rendering unit is used for receiving an operation instruction for displaying a target view in a current view and rendering the content of the target view into an off-screen buffer area;
a node setting unit, configured to add a target node in the scene of the current view, and load rendering data in the off-screen buffer area into the target node as a texture map;
a reference display unit for rendering a scene containing the current view of the target node to display a reference view of the target view in the current view.
11. An image display device, characterized in that the image display device comprises a memory for storing a computer program which, when executed by the processor, implements the method according to any one of claims 1 to 9.
12. A computer storage medium for storing a computer program which, when executed by a processor, performs the method of any one of claims 1 to 9.
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| CN202110711329.9A CN113436344B (en) | 2021-06-25 | 2021-06-25 | Reference view display method, system and image display device |
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| CN202110711329.9A CN113436344B (en) | 2021-06-25 | 2021-06-25 | Reference view display method, system and image display device |
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