JP2908868B2 - Shape design equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a shape designing apparatus for designing a product shape by using a computer, and particularly to a device capable of continuously performing delicate shape deformation in accordance with human sensitivity. The present invention relates to a shape design device configured as described above.

[Conventional technology]

Until now, as an apparatus related to this type of technology,
The thing described in 60-173678 is known. In this case, the operation content of the conversion command for the partial image is set in advance so that the image composed of the partial images can be edited, and many types of deformation operations are collectively performed by a single conversion command. Is being done.

[Problems to be solved by the invention]

However, in the case of the above publication, since one transformation operation is performed when one transformation operation is performed, one transformation command is input, so that a subtle transformation cannot be performed by a continuous transformation operation. It has become. It is also difficult to perform transformation by combining a plurality of conversion instructions. That is, in the case of the above publication, when it is necessary to execute a plurality of conversions while maintaining a balance in order to obtain an intended shape, if two conversion instructions are executed separately, the balance of the deformation is reduced. As a result, there is a problem that the intended shape cannot be obtained easily and quickly.

SUMMARY OF THE INVENTION An object of the present invention is to provide a shape design apparatus capable of designating a plurality of types of shape deformations using intuitive words and simultaneously, easily and continuously performing the plurality of types of shape deformations.

[Means for solving the problem]

The object is to provide, as constituent elements of a shape design device, a first input means for simultaneously inputting a plurality of shape deformation types and a continuous deformation degree corresponding to the shape deformation type, and prior to designing a product shape. A second input means for selectively instructing and inputting a plurality of words from a preset sensory word group as a shape deformation type, and a plurality of instructions selectively instructed and input from the second input means. Using a shape deformation type defining means for predefining a word as corresponding to each of the plurality of shape deformation types in the first input means, and a state quantity as a degree of deformation from the first input means, Shape parameter changing means for changing each parameter expressing the shape, display data generating means for generating shape display data from a parameter expressing the shape as a change result, and the display data Means for displaying the shape using the shape display data from adult means, is achieved by allowed to at least provided.

[Action]

When a dial capable of continuously changing the state quantity is provided as a means for continuously inputting the shape deformation instruction,
A subtle shape deformation can be performed based on a deformation instruction obtained by the slight rotation of the dial. By the way, since there are many types of shape deformation instructions, if the types of shape deformation instructions defined for each are made variable and a plurality of dials are provided at a minimum, it is based on the state quantity from each of those dials. It is possible to simultaneously perform subtle shape deformation by combining a plurality of types of shape deformation. Further, when a plurality of data and programs indicating the contents of the deformation are held when the deformation operation is performed based on the shape deformation instruction, a more appropriate one can be selected to perform the shape deformation operation. is there.

〔Example〕

 Hereinafter, the present invention will be described with reference to FIGS.

First, the shape design apparatus according to the present invention will be described.
FIG. 1 shows an outline of the overall configuration in one example. In this case, the dial box 1 provided with a plurality of dials is provided as a means for inputting an instruction of the type of shape deformation and a continuous deformation degree. The dial definition unit 4 defines the type of the deformation instruction as variable. The types of transformation instructions generally assumed are stored in advance in the transformation instruction type dictionary 7, and words appropriately selected from the dictionary are defined as the types of transformation instructions corresponding to dials. Note that the type of the deformation instruction is defined for each dial by the mouse 2 or the keyboard 3, and the defined result is held in the dial definition buffer 5.

The data input unit 6 receives data from input devices such as the dial box 1, mouse 2, and keyboard 3. When each dial is rotated in the dial box 1, the amount of rotation at that time is taken in by the data input unit 6, but the type of deformation instruction defined for each dial is known by referring to the dial definition buffer 5. Thus, the type of deformation instruction and the degree of shape deformation can be obtained corresponding to the dial. As described above, the shape parameter changing unit 8 changes the current shape parameter to a new shape parameter based on the type of deformation instruction and the degree of shape deformation obtained for the dial. It is stored in. When changing the shape parameters, the current shape parameters stored in the shape parameter buffer 9 are referred to, and as a result of the change, new shape parameters are obtained. The graphics data conversion unit 10 also creates graphics data for displaying the shape represented by the shape parameters stored in the shape parameter buffer 9 on the display device 12, and the created graphics data is After being temporarily stored in the graphics data buffer 11, by being given as display data to the display device 12,
The shape after the shape change can be displayed.

The configuration of the shape design apparatus and the outline of the operation have been described above, but the partial operation or processing will be described in more detail as follows.

That is, first, the processing in the case where the type of the deformation instruction is defined for each of the dials will be described. When the present shape design device is activated, each of the dials is generally in an undefined state. FIG. 2 shows an example of the display screen in the above. When the "word registration" menu is selected using the mouse 2 on this display screen, the instruction is notified to the dial definition unit 4 via the data input unit 6 and the dial definition unit 4 is controlled by the dial definition unit 4. A list of words stored in advance in the transformation instruction type dictionary 7 is displayed as a table on the display device 12, as shown in FIG. In this state, after selecting the menu of "Registration" by the mouse 2, each time a word to be used for the type of transformation instruction is selected from the list, it is sequentially defined on the dial. When the definition for is completed, as shown in FIG. 4, each dial displayed on the display screen is displayed with a name indicating the type of the deformation instruction in the vicinity thereof. Since the relative display positional relationship of each of the dials displayed on the display screen is similar to that of each of the dials provided in the dial box 1, each of the dials on the dial box 1 is defined by the above definition. The meaning in the transformation instruction for is determined. If it is necessary to change the definition of a dial, select the "Delete" menu on the screen shown in Fig. 3 and then select the word to be deleted from the list. The previously registered word is deleted, so that a new definition can be made for the dial thereafter. As described above, the result defined for each dial is stored in the dial definition buffer 5 in a table format as shown in FIG. That is, the type of the transformation instruction, which is a defined word, is held corresponding to the dial number.

Next, a description will be given of the flow of processing when the shape quantity is transformed by taking in the state quantity from each dial. FIG. 6 shows a basic procedure of the processing. As shown in the figure, this processing is a repetition processing of a substantially constant cycle. When performing the process, first, the state quantity from each of the dials is taken into the data input unit 6, and the difference from the state quantity at the time of the previous execution of the process is obtained as the operation amount for each of the dials. I have. Thereafter, from the data input unit 6, a word indicating the type of the deformation instruction defined for each dial is extracted from the dial definition buffer 5, and the data of the word type and the dial operation amount are paired to the shape parameter changing unit. 8 is sent. The shape parameter changing unit 8 changes the shape parameter from the data and the value of the shape parameter at the present time (at the time of executing the previous process).

Here, if the change of the shape parameter is described in detail, the shape parameter referred to here indicates the feature of the target shape. If the shape parameter is changed, the shape is deformed accordingly.
For example, FIG. 7 shows an example of shape parameters for the wing shape of an airplane. There are various methods by which the shape parameter changing unit 8 changes the shape parameter. One example is a method of describing the relationship between the dial operation amount and the shape parameter for the type of word using a procedural program.
FIG. 8 shows an example of this procedural program. This description indicates that if the amount of operation on the dial defined as "sharp" is positive, the sweepback angle is increased,
If the tip chord is reduced and the amount of operation on the dial is negative, it indicates that the swept angle is reduced. As described above, in the case of the procedural program, an arbitrary relationship between the dial operation amount and the shape parameter can be described.

Apart from the above, as another method of changing the shape parameters, the dial operation amount and the shape parameters before deformation are made independent variables, and the shape parameters after deformation are made dependent variables.
It is conceivable to change the shape parameters by providing means for executing various equations shown in FIG. 9 and appropriately setting data representing the coefficients of the equations. Where chuoyoku, yokuchou, sentanyoku, koutaikaku,
maetanmaru, ushrotanmaru, maenakamaru, ushironakam
aru, maechokusen, ushirochokusen are the shape parameters, center chord, wing length, tip chord, swept angle, front wing tip roundness coefficient, rear wing tip roundness coefficient, front wing center roundness coefficient,
The center roundness coefficient of the rear wing, the leading edge linearity, and the trailing edge linearity are shown. Also, chokusen, kyokusen, volume, marum
i, smart, simple, sharp, and mirai each represent a word representing the type of shape deformation, and K11 to K108 represent constants as coefficients. The variable to which 0 is added is the current value of the shape parameter, and a value obtained by multiplying the current value by the ratio obtained by calculation is obtained as the shape parameter after deformation. By the way, as shown in FIG. 3, there are some types of words instructing shape deformation corresponding to human senses, and in some cases, it is difficult to find rules for changing shape parameters for words. As shown in the figure, if the change rule is expressed by a linear equation, the data showing the relationship between the shape impression and the human impression when the shape is deformed can be statistically processed by a multivariate analysis method. Can be obtained in advance by a coefficient in an equation adapted to the sense of the user.

Further, as another method of changing the shape parameter,
It is conceivable to run a neural net. As shown in FIG. 10, the dial operation amount and the shape parameter before deformation are used as input values to the input layer 801, and the shape parameter after deformation via the intermediate layer 802 is used as the output value of the output layer (shape parameter layer) 803. It is something that you get. The shape parameters are changed by setting weight coefficients (intermediate layer weight coefficients and shape parameter layer weight coefficients) for the neural network as shape parameter change data. By the way, the above weighting factors can be obtained by a neural network learning method known as back propagation method, using data indicating the relationship between human impressions and shape parameters when deforming the shape as teacher data. By appropriately setting the weighting coefficient, a neural network capable of converting a shape pattern while adapting to human senses is expressed. In the case of using a neural network, the nonlinear relationship between the input value and the output value can be described, so that even if the dial operation amount and the shape parameter have a complicated relationship, the shape can be easily changed.

As described above, there are various methods for changing the shape parameter. Therefore, the shape parameter changing unit 8 may use any one of the above methods, or may use a plurality of methods. Can be used in combination. For example, as shown in FIG. 11, a method can be adopted in which a shape is changed by a shape parameter changing neural network 810 first, and then the changed shape parameter is further changed by a shape parameter changing (procedure type) program. .

Referring back to FIG. 6, the shape parameter change result from the shape parameter change unit 8 is temporarily stored in the shape parameter buffer 9 and then read out to the graphics data conversion unit 10. Graphics data to be displayed on the display device 12 is created. FIG. 12 shows an example of the graphics data. As shown in the figure, the graphics data is defined as the coordinates of each of the vertices constituting the polygon in a plane correspondence. The creation procedure is shown in Fig. 13. From the parameters for the center chord, wing length, tip chord, swept angle, green front straightness and green straightness after wing, one-sided shape of the wing It can be roughly expressed from the control points. This is based on the parameters of front wing tip roundness coefficient, rear wing tip roundness coefficient, front wing center roundness coefficient, and rear wing center roundness coefficient for this shape, excluding the root of the wing out of the six control points. This is because the roundness around the four controls can be determined. These data are displayed on the display device 12 so that the user can know the result of shape deformation by dial operation. If the impression of the shape deformation result is not satisfactory, the process returns to the process of taking in the state quantity from each dial again, and the above process may be repeated.

If the intended shape is obtained as a result of the repetition processing performed as necessary, the repetition processing is ended by selecting "end" using the mouse 2 on the screen shown in FIG. . Mouse 2 at the beginning of the repetition process
If you provide a process to check the input from
Such an end selection process can be easily performed.

The partial operation or processing in the shape design device according to the present invention has been described above. Next, a description will be given of a method of adapting the shape design to human sensitivity.
In the shape designing apparatus according to the present invention described above, as shown in FIG. 3, the shape deformation based on the human sense is realized. However, there are problems in realizing such shape deformation. In other words, the shape deformation for a word designating the shape deformation may not be uniquely determined. For example, the result of a shape deformation intended by the word "smart" is different for each person.
Therefore, unless the result of the shape deformation is adapted to the sensibility of the person using the shape design device, the shape cannot be designed as intended by the operator.

In order to solve the above problem, the shape design apparatus according to the present invention uses a program or data which describes the relationship between the dial operation amount and the shape parameter for the type of word in the shape parameter changing unit 8 as shown in FIG. Are provided for the same type of word, and the data input unit 6 specifies which of them is used. On the basis of the specification, the shape parameter change tip 13 includes a program in the shape parameter change unit 8,
Alternatively, a designated one can be selected from the data. At the time of this selection, the menu of "designate subject" is selected on the screen shown in FIG. 2, and then the attribute of the subject is designated on the subject attribute input screen shown in FIG. The program or the data that describes the relationship between the corresponding dial operation amount and the shape parameter is performed by selecting the data. In this example, the case where the type of the target person is specified has been described, but the same selection may be made when there are various types of design objects.

〔The invention's effect〕

Since the present invention is configured as described above, the following effects can be obtained.

That is, since a dial capable of continuously indicating the degree of shape deformation is provided as an input means, it is possible to perform delicate shape deformation while checking the result of shape deformation. Moreover, at this time, if a plurality of dials are simultaneously operated, complicated shape deformation based on a plurality of shape deformation instructions is performed. In addition, since the type of the shape deformation instruction for each dial can be dynamically defined, when the definition for each dial is changed as necessary, various types of deformation instructions including words indicating intuitive instructions are provided. Is possible. Furthermore, since a plurality of shape deformation contents for the same shape deformation instruction are prepared, if an appropriate one is selected from among them, a fine-grained object suitable for the shape design object and the designer's sensitivity can be selected. The shape can be designed.

[Brief description of the drawings]

FIG. 1 is a diagram showing an outline of the overall configuration of an example of a shape design device according to the present invention, FIG. 2 is a diagram showing an example of a screen when the device is activated, and FIG. FIG. 4 is a diagram showing an example of the type of the shape deformation instruction word, and FIG. 4 is a diagram showing an example of a dial display on the screen after the definition when a word indicating the shape deformation instruction is defined for each dial. Fig. 6 is a diagram showing a registration format of data indicating a shape deformation instruction defined for each dial, Fig. 6 is a diagram showing a processing procedure of shape deformation according to the present invention, and Fig. 7 is an example of a shape parameter. FIG. 8 is a diagram showing an example of a procedural program for shape deformation, FIG. 9 is a diagram showing an example of an equation for shape deformation,
FIG. 10 is a diagram showing an example of a shape deformation neural network, FIG. 11 is a diagram showing a shape deformation method combining a plurality of shape deformation methods, and FIG. 12 is a diagram showing an example of graphics data FIG. 13 is a diagram showing a procedure for creating graphics data from shape parameters, FIG. 14 is a diagram showing an internal configuration of an example of a shape parameter changing unit, and FIG.
The figure shows the target person attribute input screen. 1 ... Dial box, 2 ... Mouse, 3 ... Keyboard, 4 ... Dial definition part, 5 ... Dial definition buffer, 6 ... Data input part, 7 ... Transformation instruction type dictionary,
8 ... shape parameter changing unit, 9 ... shape parameter buffer, 10 ... graphics data conversion unit, 11 ... graphics data buffer, 12 ... display device, 13 ...
Shape parameter change selection unit, 801, input layer, 802, middle layer, 803, output layer, 810, shape parameter change neural net, 820, shape parameter change program

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-63-170781 (JP, A) JP-A-64-51580 (JP, A) JP-A-2-275519 (JP, A) Shigeru Miyawaki 5 people FUJITSU, Fujitsu Limited, 1979, Vol. 30, No. 6, p. 873-889 (58) Field surveyed (Int.Cl. ⁶ , DB name) G06F 17/50

Claims (4)

(57) [Claims] 1. A shape design apparatus for designing a product shape using a computer, wherein first input means for simultaneously inputting a plurality of shape deformation types and a continuous deformation degree corresponding to the shape deformation type. And second input means for selectively instructing and inputting a plurality of words from a pre-set sensory word group as a shape deformation type prior to the design of the product shape; Shape deformation type defining means for predefining a plurality of words selectively instructed and input as corresponding to each of the plurality of shape deformation types in the first input means; and a degree of deformation from the first input means. Shape parameter changing means for changing each of the parameters representing the shape by using each of the state quantities as, and display data for generating shape display data from the parameters representing the shape as a result of the change. Generating means and, at least provided with formed by arrangement of shape design device and means for displaying the shape using the shape display data, a from the display data generating means. 2. The apparatus according to claim 1, wherein said first input means is constituted by a plurality of dials. In the shape parameter changing means, the means for defining the change content is a program in which a parameter representing a state quantity and a shape from the first input means is a variable, or a state from the first input means. Data representing the coefficient of an equation in which the quantity and the parameter representing the shape before deformation are independent variables and the parameter representing the shape after deformation is a dependent variable, or the state quantity from the first input means and the shape before deformation Is a parameter representing the weighting factor of the neural network, or a parameter representing the weighting factor of the neural network, wherein the parameter representing the shape after deformation is an input value and the parameter representing the shape after deformation is an output value.
3. The shape designing apparatus according to claim 1, wherein said configuration is configured by using said combination. 4. The shape parameter changing means includes a program as means for defining the contents of change or a means for providing a plurality of data for the same shape deformation type and selecting and executing a designated one. The shape design apparatus according to claim 3, wherein the shape design apparatus has a configuration.