CN102609553A - Method for drawing computer-assisted animation modeling - Google Patents
Method for drawing computer-assisted animation modeling Download PDFInfo
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- CN102609553A CN102609553A CN2011100269137A CN201110026913A CN102609553A CN 102609553 A CN102609553 A CN 102609553A CN 2011100269137 A CN2011100269137 A CN 2011100269137A CN 201110026913 A CN201110026913 A CN 201110026913A CN 102609553 A CN102609553 A CN 102609553A
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Abstract
The invention relates to a method for drawing a computer-assisted animation modeling, wherein joints drawn by a computer graphic method are connected to form a framework through a skeleton, the positions and orientations of various parts of the animation modeling are positioned through positioning balls attached to the joints, and a modeling structure chart is simulated in the process of drawing the animation modeling so as to realize animation modeling drawing basis on a plane. By the method, various visual elements such as structure, perspective, exaggeration, deformation and the like of the modeling under multiple angles are unified, and the design skill and production quality are improved.
Description
Technical field
The present invention relates to a kind of computer assisted animation method for designing, relate to a kind of computer assisted animation method for designing of cartoon role design in particular.
Background technology
In the traditional two-dimensional animation, accomplish the drafting of the kinematic modeling design, the moulding of camera lens original painting etc. of role modelling, be basically by the animation teacher according to corresponding role's design, accomplish with its understanding, animation grounding in basic skills and experience for the role.For the animation experience be not very foot to understand with the role be not very well animation teacher, the moulding of drawing, former animation generation " out of shape " (shape departs from original moulding) can hardly be avoided.
Following a series of figure are the process of existing manual drawing moulding:
A, like Figure 18, sketch the contours the position of health major part, buttocks, thoracic cavity and head, use then health head and buttocks that linear perspective shows the personage towards.
B, like Figure 19, the position of mark four limbs is big or small with the joint, junction in the position of thoracic cavity and buttocks.
C, like Figure 20, the shape of on the joint position that b confirms, drawing four limbs, and the joint position of four limbs.
D, like Figure 21, the shape of on the joint position that b confirms, drawing four limbs, and the joint position of four limbs.
Merge the step of abcd, for shown in Figure 22, generally speaking, shape-designing Shi Heyuan painter can accomplish these 4 steps on a piece of paper, and the personnel that transfer to clean copy carry out following step.
E, like Figure 23, by shape-designing person or clean copy personnel above drawn moulding on an other animation paper, carry out clean copy, be exactly burr unnecessary in the design process and lines removing, only stay personage's main wheel profile and towards sign.
F, like Figure 24, use the thinner pencil of nib to carry out clean copy again, the draft line color that clears like this is deep, more clear.
G, like Figure 25, remove some otiose lines among the f (towards lines and location lines), finally become a design original text, the next link that is used for animation production is gone.
Shown in top figure; The design process of accomplishing moulding needs many people to participate in; And actual animation in producing drawn moulding more than complicated many of the moulding in the example; And these many people are for the understanding of moulding, the level of design and other some factor affecting, the original idea that has just had the lines of some moulding to break away from the deviser in the design phase.In 2 D animation is produced; In general personnel's artistic level of doing shape-designing is high; But the understanding for animated character's action is relatively poor relatively, designs the design original text that some non-standard needs are used for significantly moving if desired, and the difficult design of shape-designing personnel puts in place so; Understand deep original painting personnel artistic level in shape-designing and do not reach requirement and move for the animated character, then just occurred 2 D animation produce in common " race type " phenomenon.
And at present computer technology is widely used in the animation process, and some other auxiliary moulding method for drafting (as: 3DMax, Maya etc.) can not well be fit to the actual demand of 2 D animation design and production.Because the artistic exaggeration that 2 D animation had uses the method for drafting of existing these auxiliary moulding to draw the needs that can not well satisfy shape-designing and film-making.
Summary of the invention
The present invention provides the cartoon sculpting method of a specialty system for the cartoon sculpting teacher; The design drawing form of " modeling structure ball " that this method is familiar with the cartoon sculpting teacher; Offer the cartoon sculpting teacher with printer prints paper (or screen is painted); Joint and bone comprising people/animal; With them each key point of moulding is made the location, the cartoon sculpting teacher still uses the animation paper that contains the positioning rule hole to create, artistic style and characteristics when people/animal of the feasible creation in the location of in the production process because joint and bone keeps initial design.Creation is accomplished image scanning apparatus scanning animation paper such as using scanner later on and is formed image file input computing machine.This method has guaranteed the unification of moulding in each vision key elements such as the following structural relation of a plurality of moulding faces (front, the back side, left surface, right flank, 3/4 on a left side, right 3/4,3/4 of the left side back of the body, 3/4 of the right back of the body etc.), angle (look up, face, overlook etc.), posture (walk, run, jump, crouching etc.), perspective view, exaggeration degree, amplitude of deformation, has improved the art and the quality of production that design.
Technical scheme of the present invention is: design a kind of computer assisted animation method for designing; Through computing machine, printer, scanning device, the auxiliary input of image recognition apparatus conduct, output instrument; Initial cartoon role moulding based on animation's teacher design realizes a plurality of and initial unified cartoon role moulding of cartoon role shaping style, it is characterized in that may further comprise the steps:
A, in the animation original text; Between cartoon role moulding bone, put or generate place kick; The initial position of said place kick is by the joint position or the moving position decision of cartoon role; The initial size of said place kick is by the ratio decision between the moulding of cartoon role size, each position and the integral body, said place kick initially towards by the moulding of cartoon role towards decision; The initial three-dimensional properties of said place kick and original state define according to known animation action norm;
B, implicit design rough sketch, the position through regulating place kick, size and towards, generates new moulding posture, the bone length that connects place kick according between the place kick apart from variation naturally;
Skeleton computing machine capable of using, the printer output of C, new cartoon role; The designer can draw the moulding rough sketch that makes new advances according to the characteristics of the new cartoon role skeleton and the place kick moulding of being depended on thereof; Steps A～C repeats for many times, can obtain many cartoon role design rough sketches that style is unified.
" between cartoon role moulding bone, putting or generate place kick " in the said steps A may further comprise the steps:
Accomplish one or several cartoon role shape-designings by the designer, the design rough sketch is main to look squarely front pose, also can be designed to the moulding at other visual angle as required;
Above-mentioned design rough sketch is passed through the scanning device scanning input computer, if the designer is the design rough sketch of directly accomplishing on computers then can ignores this step;
Utilize the actual joint position positioning joint point of computing machine at cartoon role;
Connect articulation point, form a cover bone of cartoon role;
Place kick is put at the place in articulation point.
" between cartoon role moulding bone, putting or generate place kick " in the said steps A may further comprise the steps:
Accomplish one or several cartoon role shape-designings by the designer, the design rough sketch is main to look squarely front pose, also can be designed to the moulding at other visual angle as required;
Above-mentioned design rough sketch is passed through the scanning device scanning input computer, if the designer is the design rough sketch of directly accomplishing on computers then can ignores this step;
According to the articulation point of cartoon role moulding at blank space location role modelling;
Place kick is placed in the articulation point place;
The moulding covering of cartoon role is superimposed in the place kick;
Connect place kick, form a cover bone of cartoon role.
" between cartoon role moulding bone, putting or generate place kick " in the said steps A may further comprise the steps:
Use sensor or image recognition apparatus to discern the action of existing cartoon role, automatic positioning joint point, and produce a cover bone;
Place kick is carried in the articulation point place of corresponding site.
The three-dimensional properties of place kick and state described in the said steps A define according to known animation action norm and are meant that in Computer Database digitizing is carried out in character moulding and animal-shaped action to be described.
Said character moulding action definition comprises the walking of people, runs, the corresponding digitizing of Computer Database of jump action is described;
Animal-shaped action definition comprises:
Walking the corresponding digitizing of walking, run, pouncing in the Computer Database of doing of beating of beasts describes;
The walking of poultry, circle in the air, the corresponding digitizing in the database of jump action describes;
Corresponding digitizing in the database of the action of creeping of reptile is described.
" generate new moulding posture, the bone length that connects place kick changes according to the distance between the place kick naturally " observed following rule among the said step B:
(a) rule of bone length and angle in the setting cartoon role skeleton;
(b) constraint condition of setting cartoon role normal range;
(c) regulation rule (b) is set the constraint condition of cartoon role exaggeration range of movement.
Said step (a) sets in the cartoon role skeleton that the rule of length and angle comprises between the bone:
The definition of preset coordinate system: the horizontal level of animation paper is the X axle, and the pedal line of center of gravity becomes 90 degree in the X axle;
Preset reference length: datum length is exactly a standard length;
Center of gravity when at first finding cartoon sculpting to be in standing position, the pedal line through this center of gravity is set at the benchmark bone, i.e. one-level father bone;
Secondly, be benchmark with one-level father bone, related immediate bone is set at the sub-bone of one-level with it, and the sub-bone of one-level also is a secondary father bone simultaneously;
Once more, be benchmark with secondary father bone, related immediate bone is set at the sub-bone of secondary with it, and the sub-bone of secondary is three grades of father's bones also simultaneously, by that analogy, the bone of cartoon sculpting is formed a kind of tree structure structural drawing of classification;
Setting each root bone is θ with respect to the angle of X axle, and the length of sub-bone is that datum length multiply by coefficient a, sets the span of θ and a again;
The junction of bone and bone is exactly the position of putting place kick.
The constraint condition that said step (b) is set the cartoon role normal range comprises:
According to amplitude of fluctuation, the direction setting parameter of sub-bone, through amplitude and scope to the parameter value constrained action with respect to father's bone.
The constraint condition that said step (c) is set cartoon role exaggeration range of movement comprises:
According to amplitude of fluctuation, the direction setting adjustment parameter of sub-bone, through the adjustment parameter value is enlarged cartoon role motion amplitude and scope, role action exaggerated deformation with respect to father's bone.
Be stored in the database after the described known animation action norm definition digitized processing, the constraint that generates new cartoon role skeleton generates based on the record in the database automatically.
" three-dimensional properties of said place kick and state define according to known animation action norm " in the technical scheme is based on the common practise of plastic arts, and for example running of people promptly has following rule:
---crotch joint drives left and right sides shank and foot bones and joint and alternately travels forward, and drives skeleton trunci and joint and travels forward;
---left leg and left foot bone and joint are when motion the place ahead, and right arm bone and right arm joint are simultaneously towards the swing of walking rear; Right leg and right crus of diaphragm bone and joint are when motion the place ahead, and left arm bone and left arm joint are simultaneously towards the swing of walking rear;
---left and right arms becomes bending from elbow joint for the bone of some upper arm and forearm during swing at the volley;
In---the travel forward process; The height of head skeleton and place kick becomes wavy; When the state of the shank bone that contacts with ground of body support skeleton and joint Cheng Zhi; Head skeleton and place kick top are slightly high, and when the shank bone that contacts with ground of body support skeleton became the state of bending with the joint, head skeleton and place kick top were lower slightly;
In the---proal process, land to stretching forward from liftoff in the bone and the joint of that a strides leg, and middle knee joint becomes bending, the ankle position articulation center and the ground camber line of motion.The angle that knee joint bends and stretches is greater than the action of walking;
---in the motion of running, the process that the bone of both feet and joint do not land simultaneously
Like Figure 12 promptly is a width of cloth or a frame in running.
" generate new moulding posture, the bone length that connects place kick changes according to the distance between the place kick naturally " described in the technical scheme is in accordance with a whole set of step and the technical standard and the data of the action rule of people and animal being carried out draw after the digitized processing:
The first step: set skeleton
The definition of preset coordinate system: the horizontal level of animation paper is the X axle, and the pedal line of center of gravity becomes 90 degree in the X axle
Preset reference length: datum length is exactly a standard length
Center of gravity when a. at first finding cartoon sculpting to be in the incipient stability posture, the pedal line through this center of gravity is set at the benchmark bone, i.e. one-level father bone;
B. be benchmark with one-level father bone, related immediate bone is set at the sub-bone of one-level with it, and the sub-bone of one-level also is a secondary father bone simultaneously;
C. similar with b, be benchmark with secondary father bone, related immediate bone is set at the sub-bone of secondary with it, and the sub-bone of secondary is three grades of father's bones also simultaneously, by that analogy, the bone of cartoon sculpting is formed a kind of tree structure structural drawing of classification;
D. setting each root bone is θ with respect to the angle of X axle, and the length of sub-bone is that datum length multiply by coefficient a, is example with ordinary people's stature, and then the parameter of all bones is as shown in table 1:
| Father's bone name | The bone name | a | θ (degree) |
| Center of gravity line | The abdomen bone | 0.7 | 90 |
| The abdomen bone | The |
1 | 90 |
| The pelvic bone bone | The breastbone bone | 0.5 | 90 |
| The breastbone bone | The neck bone | 0.5 | 90 |
| The neck bone | The |
1 | 90 |
| The breastbone bone | Right omoplate bone | 0.8 | 160 |
| Right omoplate bone | Right upper arm | 1.2 | 245 |
| Right upper arm | The bottom right arm | 1.3 | 245 |
| The bottom right arm | The right hand palm | 0.5 | 270 |
| The breastbone bone | Left side omoplate bone | 0.8 | 20 |
| Left side omoplate bone | Left upper arm | 1.2 | -65 |
| Left upper arm | Left side underarm | 1.3 | -65 |
| Left side underarm | The left hand palm | 0.5 | 270 |
| The abdomen bone | Right hipbone | 0.8 | 225 |
| Right hipbone | Upper right leg | 1.65 | 260 |
| Upper right leg | The bottom right leg | 2 | 260 |
| The bottom right leg | Right crus of diaphragm | 0.5 | 200 |
| The abdomen bone | Left side hipbone | 0.8 | 315 |
| Left side hipbone | Upper left leg | 1.65 | 280 |
| Upper left leg | Left lower leg | 2 | 280 |
| Left lower leg | Left foot | 0.5 | -20 |
Table 1
E. one type of cartoon sculpting framework construction is accomplished, and the junction of bone and bone is exactly the position of putting place kick.Like Figure 16, shown in 17, the dotted portion among the figure except center of gravity line is to represent to be a bone group here, be made up of several bones or several bones, but their activities is movable together, goes to handle so can be used as a bone.Be respectively the right hipbone of right omoplate bone, left omoplate bone, left hipbone from top to bottom.
Second step: cartoon role normal range constraint
Skeleton according to the first step is created, and each root bone all has own unique father's bone.We can be according to sub-bone with respect to restrictions on the parameters such as the amplitude of fluctuation of father's bone, direction action, to reach our needed standard.Sub-bone is with respect to father's bone can all around (front and back be the depth constraint in space; About for the constraint on plane) move; For one type of cartoon sculpting, within the scope of constraint, sub-bone can freely be put according to the needs of moulding; Extend to whole skeleton, just can retrain the motion of all bones in the skeleton.Normal action can not exceed this scope, but has unconventional action and exaggeration action, and this part action was described in the 3rd step.
Be that the definite sub-bone of a normal character moulding is with respect to father's bone movement range all around in the following table
Unit: degree
| Father's bone name | The bone name | With respect to father's bone forward direction amplitude | With respect to behind father's bone to amplitude | With respect to father's bone left-hand amplitude | With respect to father's bone dextrad amplitude |
| Center of gravity line | The abdomen bone | 120 | 90 | 50 | 50 |
| The abdomen bone | The pelvic bone bone | 180 | 120 | 50 | 50 |
| The pelvic bone bone | The breastbone bone | 60 | 60 | 25 | 25 |
| The breastbone bone | The neck bone | 120 | 120 | 75 | 75 |
| The neck bone | The skull bone | 30 | 30 | 30 | 30 |
| The breastbone bone | Right omoplate bone | 60 | 60 | 60 | 60 |
| Right omoplate bone | Right upper arm | 180 | 180 | 120 | 180 |
| Right upper arm | The bottom right arm | 180 | 0 | 160 | 12 |
| The bottom right arm | The right hand palm | 90 | 90 | 90 | 90 |
| The breastbone bone | Left side omoplate bone | 60 | 60 | 60 | 60 |
| Left side omoplate bone | Left upper arm | 180 | 180 | 180 | 120 |
| Left upper arm | Left side underarm | 180 | 0 | 12 | 160 |
| Left side underarm | The left hand palm | 90 | 90 | 90 | 90 |
| The abdomen bone | Right hipbone | 30 | 30 | 30 | 30 |
| Right hipbone | Upper right leg | 180 | 120 | 45 | 180 |
| Upper right leg | The bottom right leg | 0 | 180 | 75 | 12 |
| The bottom right leg | Right crus of diaphragm | 120 | 90 | 60 | 60 |
| The abdomen bone | Left side hipbone | 30 | 30 | 30 | 30 |
| Left side hipbone | Upper left leg | 180 | 120 | 180 | 45 |
| Upper left leg | Left lower leg | 0 | 180 | 12 | 75 |
| Left lower leg | Left foot | 120 | 90 | 60 | 60 |
Table 2
The 3rd step: cartoon role exaggeration range of movement constraint
What describe in second step table is the motion amplitude of sub-bone with respect to father's bone; Can freely put according to the needs of reality with interior sub-bone in this amplitude; When doing artistic exaggeration, this cover constraint condition maybe be incompatible in subrange, can not occur for whole modeling skeleton inapplicable; In general there are the needs of exaggerating in the joint that is several keys of skeleton; We can increase an exaggeration variable in the number of degrees scope of second step constraint so, and we set this variable is γ, normal range plus-minus γ; Be used to realize the needs exaggerated, and the setting of γ numerical value needs animation teacher and hairstylist according to the common recognition decision to this type of moulding of the actual features of cartoon sculpting and industry.
We also take a common people to make example, and there are neck, left and right arms, left and right sides leg and left and right sides pin in the position that generally can make the exaggerated deformation action in the form in second step, and form can be modified to so
Unit: degree
| Father's bone name | The bone name | With respect to father's bone forward direction amplitude | With respect to behind father's bone to amplitude | With respect to father's bone left-hand amplitude | With respect to father's bone dextrad amplitude |
| Center of gravity line | The abdomen bone | 120±γ | 90±γ | 50±γ | 50±γ |
| The abdomen bone | The pelvic bone bone | 180±γ | 120±γ | 50±γ | 50±γ |
| The pelvic bone bone | The breastbone bone | 60 | 60 | 25 | 25 |
| The breastbone bone | The neck bone | 120±γ | 120±γ | 75±γ | 75±γ |
| The neck bone | The skull bone | 30 | 30 | 30 | 30 |
| The breastbone bone | Right omoplate bone | 60±γ | 60±γ | 60±γ | 60±γ |
| Right omoplate bone | Right upper arm | 180±γ | 180±γ | 120±γ | 180±γ |
| Right upper arm | The bottom right arm | 180 | 0 | 160 | 12 |
| The bottom right arm | The right hand palm | 90 | 90 | 90 | 90 |
| The breastbone bone | Left side omoplate bone | 60±γ | 60±γ | 60±γ | 60±γ |
| Left side omoplate bone | Left upper arm | 180±γ | 180±γ | 180±γ | 120±γ |
| Left upper arm | Left side underarm | 180 | 0 | 12 | 160 |
| Left side underarm | The left hand palm | 90 | 90 | 90 | 90 |
| The abdomen bone | Right hipbone | 30±γ | 30±γ | 30±γ | 30±γ |
| Right hipbone | Upper right leg | 180±γ | 120±γ | 45±γ | 180±γ |
| Upper right leg | The bottom right leg | 0 | 180 | 75 | 12 |
| The bottom right leg | Right crus of diaphragm | 120 | 90 | 60 | 60 |
| The abdomen bone | Left side hipbone | 30±γ | 30±γ | 30±γ | 30±γ |
| Left side hipbone | Upper left leg | 180±γ | 120±γ | 180±γ | 45±γ |
| Upper left leg | Left lower leg | 0 | 180 | 12 | 75 |
| Left lower leg | Left foot | 120 | 90 | 60 | 60 |
Table 3
The different situation of correction variable γ that possibly have each root bone in the moulding is so γ possibly be divided into γ 1, γ 2, γ 3, γ 4 etc.
All be human body for example more than, animal body and other moulding can be overlapped rule according to this and retrained;
These normalized definitions are stored in the database through after the digitized processing, and the constraint that generates new cartoon role skeleton generates based on the record in the database automatically.
And whole technical proposal can utilize computing machine, printer, scanning device, image recognition apparatus as aid, improves the efficient of moulding work.
Description of drawings
Fig. 1 is conventional shape-designing legend;
Fig. 2, Fig. 3 are the bone legends;
Fig. 4, Fig. 5 are the skeletal graphs of having hidden the standard moulding;
Fig. 6, Fig. 7, Fig. 8, Figure 12 are the skeletal graphs that has added place kick;
Fig. 9, Figure 10, Figure 11 are the design drawings that has recovered the standard moulding;
Figure 13, Figure 14, Figure 15 are the design drawings through modifying;
Figure 16, Figure 17 are cartoon sculpting framework construction completion figure;
Figure 18-Figure 25 is the process of existing manual drawing moulding.
Embodiment
Below in conjunction with Figure of description embodiment is described.
Design a kind of computer assisted animation method for designing; Through computing machine, printer, scanning device, the auxiliary input of image recognition apparatus conduct, output instrument; Initial cartoon role moulding based on animation's teacher design realizes a plurality of and initial unified cartoon role moulding of cartoon role shaping style, it is characterized in that may further comprise the steps:
A, in the animation original text; Between cartoon role moulding bone, put or generate place kick; The initial position of said place kick is by the joint position or the moving position decision of cartoon role; The initial size of said place kick is by the ratio decision between the moulding of cartoon role size, each position and the integral body, said place kick initially towards by the moulding of cartoon role towards decision; The initial three-dimensional properties of said place kick and original state define according to known animation action norm; Like Fig. 6, Fig. 7, Fig. 8, Figure 12;
B, implicit design rough sketch, the position through regulating place kick, size and towards, generates new moulding posture, the bone length that connects place kick according between the place kick apart from variation naturally;
Skeleton computing machine capable of using, the printer output of C, new cartoon role; The designer can draw the moulding rough sketch that makes new advances according to the characteristics of the new cartoon role skeleton and the place kick moulding of being depended on thereof; Steps A～C repeats for many times, can obtain many cartoon role design rough sketches that style is unified, like Fig. 9; Figure 10, Figure 11; The needed moulding rough sketch that can further draw, like Figure 13, Figure 14, Figure 15.
" between cartoon role moulding bone, putting or generate place kick " in the said steps A may further comprise the steps:
Accomplish one or several cartoon role shape-designings by the designer, the design rough sketch is main to look squarely front pose, also can be designed to the moulding at other visual angle as required; Like Fig. 1,
Above-mentioned design rough sketch is passed through the scanning device scanning input computer, if the designer is the design rough sketch of directly accomplishing on computers then can ignores this step;
Utilize the actual joint position positioning joint point of computing machine at cartoon role; Like Fig. 2, Fig. 3, Fig. 4, Fig. 5;
Connect articulation point, form a cover bone of cartoon role;
Place kick is put at the place in articulation point.
" between cartoon role moulding bone, putting or generate place kick " in the said steps A may further comprise the steps:
Accomplish one or several cartoon role shape-designings by the designer, the design rough sketch is main to look squarely front pose, also can be designed to the moulding at other visual angle as required; Like Fig. 1,
Above-mentioned design rough sketch is passed through the scanning device scanning input computer, if the designer is the design rough sketch of directly accomplishing on computers then can ignores this step;
According to the articulation point of cartoon role moulding at blank space location role modelling; Like Fig. 2, Fig. 3, Fig. 4, Fig. 5;
Place kick is placed in the articulation point place;
The moulding covering of cartoon role is superimposed in the place kick;
Connect place kick, form a cover bone of cartoon role.
" between cartoon role moulding bone, putting or generate place kick " in the said steps A may further comprise the steps:
Use sensor or image recognition apparatus to discern the action of existing cartoon role, automatic positioning joint point, and produce a cover bone; Like Fig. 2, Fig. 3, Fig. 4, Fig. 5;
Place kick is carried in the articulation point place of corresponding site.
The three-dimensional properties of place kick and state described in the said steps A define according to known animation action norm and are meant that in Computer Database digitizing is carried out in character moulding and animal-shaped action to be described.
Said character moulding action definition comprises the walking of people, runs, the corresponding digitizing of Computer Database of jump action is described;
Animal-shaped action definition comprises:
Walking the corresponding digitizing of walking, run, pouncing in the Computer Database of doing of beating of beasts describes;
The walking of poultry, circle in the air, the corresponding digitizing in the database of jump action describes;
Corresponding digitizing in the database of the action of creeping of reptile is described.
" generate new moulding posture, the bone length that connects place kick changes according to the distance between the place kick naturally " observed following rule among the said step B:
(a) rule of bone length and angle in the setting cartoon role skeleton;
(b) constraint condition of setting cartoon role normal range;
(c) regulation rule (b) is set the constraint condition of cartoon role exaggeration range of movement.
Said step (a) sets in the cartoon role skeleton that the rule of length and angle comprises between the bone:
The definition of preset coordinate system: the horizontal level of animation paper is the X axle, and the pedal line of center of gravity becomes 90 degree in the X axle;
Preset reference length: datum length is exactly a standard length;
Center of gravity when at first finding cartoon sculpting to be in standing position, the pedal line through this center of gravity is set at the benchmark bone, i.e. one-level father bone;
Secondly, be benchmark with one-level father bone, related immediate bone is set at the sub-bone of one-level with it, and the sub-bone of one-level also is a secondary father bone simultaneously;
Once more, be benchmark with secondary father bone, related immediate bone is set at the sub-bone of secondary with it, and the sub-bone of secondary is three grades of father's bones also simultaneously, by that analogy, the bone of cartoon sculpting is formed a kind of tree structure structural drawing of classification;
Setting each root bone is θ with respect to the angle of X axle, and the length of sub-bone is that datum length multiply by coefficient a, sets the span of θ and a again;
The junction of bone and bone is exactly the position of putting place kick.
The constraint condition that said step (b) is set the cartoon role normal range comprises:
According to amplitude of fluctuation, the direction setting parameter of sub-bone, through amplitude and scope to the parameter value constrained action with respect to father's bone.
The constraint condition that said step (c) is set cartoon role exaggeration range of movement comprises:
According to amplitude of fluctuation, the direction setting adjustment parameter of sub-bone, through the adjustment parameter value is enlarged cartoon role motion amplitude and scope, role action exaggerated deformation with respect to father's bone.
Be stored in the database after the described known animation action norm definition digitized processing, the constraint that generates new cartoon role skeleton generates based on the record in the database automatically.
The present invention is directed to inevitably " out of shape " problem of original painting designing institute that dynamically reaches of traditional two-dimensional cartoon role moulding; On basis by artist's operation and generation high-quality animation figure; Simulate traditional cartoon sculpting and original painting method for designing thereof; Instruct and correction moulding and original painting design process thereof, produce correct design original text as far as possible, improved the throughput rate in animation field.
Claims (11)
1. computer assisted animation method for designing; Through computing machine, printer, scanning device, the auxiliary input of image recognition apparatus conduct, output instrument; Initial cartoon role moulding based on animation's teacher design realizes a plurality of and initial unified cartoon role moulding of cartoon role shaping style, it is characterized in that may further comprise the steps:
A, in the animation original text; Between cartoon role moulding bone, put or generate place kick; The initial position of said place kick is by the joint position or the moving position decision of cartoon role; The initial size of said place kick is by the ratio decision between the moulding of cartoon role size, each position and the integral body, said place kick initially towards by the moulding of cartoon role towards decision; The initial three-dimensional properties of said place kick and original state define according to known animation action norm;
B, implicit design rough sketch, the position through regulating place kick, size and towards, generates new moulding posture, the bone length that connects place kick according between the place kick apart from variation naturally;
Skeleton computing machine capable of using, the printer output of C, new cartoon role; The designer can draw the moulding rough sketch that makes new advances according to the characteristics of the new cartoon role skeleton and the place kick moulding of being depended on thereof; Steps A～C repeats for many times, can obtain many cartoon role design rough sketches that style is unified.
2. computer assisted animation method for designing according to claim 1 is characterized in that: " between cartoon role moulding bone, put or generate place kick " in the said steps A and may further comprise the steps:
Accomplish one or several cartoon role shape-designings by the designer, the design rough sketch is main to look squarely front pose, also can be designed to the moulding at other visual angle as required;
Above-mentioned design rough sketch is passed through the scanning device scanning input computer, if the designer is the design rough sketch of directly accomplishing on computers then can ignores this step;
Utilize the actual joint position positioning joint point of computing machine at cartoon role;
Connect articulation point, form a cover bone of cartoon role;
Place kick is put at the place in articulation point.
3. computer assisted animation method for designing according to claim 1 is characterized in that: " between cartoon role moulding bone, put or generate place kick " in the said steps A and may further comprise the steps:
Accomplish one or several cartoon role shape-designings by the designer, the design rough sketch is main to look squarely front pose, also can be designed to the moulding at other visual angle as required;
Above-mentioned design rough sketch is passed through the scanning device scanning input computer, if the designer is the design rough sketch of directly accomplishing on computers then can ignores this step;
According to the articulation point of cartoon role moulding at blank space location role modelling;
Place kick is placed in the articulation point place;
The moulding covering of cartoon role is superimposed in the place kick;
Connect place kick, form a cover bone of cartoon role.
4. computer assisted animation method for designing according to claim 1 is characterized in that: " between cartoon role moulding bone, put or generate place kick " in the said steps A and may further comprise the steps:
Use sensor or image recognition apparatus to discern the action of existing cartoon role, automatic positioning joint point, and produce a cover bone;
Place kick is carried in the articulation point place of corresponding site.
5. according to claim 2 or 3 or 4 described computer assisted animation methods for designing, it is characterized in that:
The three-dimensional properties of place kick and state described in the said steps A define according to known animation action norm and are meant that in Computer Database digitizing is carried out in character moulding and animal-shaped action to be described.
6. computer assisted animation method for designing according to claim 5 is characterized in that:
Said character moulding action definition comprises the walking of people, runs, the corresponding digitizing of Computer Database of jump action is described;
Animal-shaped action definition comprises:
Walking the corresponding digitizing of walking, run, pouncing in the Computer Database of doing of beating of beasts describes;
The walking of poultry, circle in the air, the corresponding digitizing in the database of jump action describes;
Corresponding digitizing in the database of the action of creeping of reptile is described.
7. computer assisted animation method for designing according to claim 6 is characterized in that: " generate new moulding posture, the bone length that connects place kick changes according to the distance between the place kick naturally " observed following rule among the said step B:
(a) rule of bone length and angle in the setting cartoon role skeleton;
(b) constraint condition of setting cartoon role normal range;
(c) regulation rule (b) is set the constraint condition of cartoon role exaggeration range of movement.
8. computer assisted animation method for designing according to claim 7 is characterized in that: said step (a) sets in the cartoon role skeleton that the rule of length and angle comprises between the bone:
The definition of preset coordinate system: the horizontal level of animation paper is the X axle, and the pedal line of center of gravity becomes 90 degree in the X axle;
Preset reference length: datum length is exactly a standard length;
Center of gravity when at first finding cartoon sculpting to be in standing position, the pedal line through this center of gravity is set at the benchmark bone, i.e. one-level father bone;
Secondly, be benchmark with one-level father bone, related immediate bone is set at the sub-bone of one-level with it, and the sub-bone of one-level also is a secondary father bone simultaneously;
Once more, be benchmark with secondary father bone, related immediate bone is set at the sub-bone of secondary with it, and the sub-bone of secondary is three grades of father's bones also simultaneously, by that analogy, the bone of cartoon sculpting is formed a kind of tree structure structural drawing of classification;
Setting each root bone is θ with respect to the angle of X axle, and the length of sub-bone is that datum length multiply by coefficient a, sets the span of θ and a again;
The junction of bone and bone is exactly the position of putting place kick.
9. computer assisted animation method for designing according to claim 8 is characterized in that: the constraint condition that said step (b) is set the cartoon role normal range comprises:
According to amplitude of fluctuation, the direction setting parameter of sub-bone, through amplitude and scope to the parameter value constrained action with respect to father's bone.
10. computer assisted animation method for designing according to claim 9 is characterized in that: the constraint condition that said step (c) is set cartoon role exaggeration range of movement comprises:
According to amplitude of fluctuation, the direction setting adjustment parameter of sub-bone, through the adjustment parameter value is enlarged cartoon role motion amplitude and scope, role action exaggerated deformation with respect to father's bone.
11. computer assisted animation method for designing according to claim 10; It is characterized in that: be stored in the database after the described known animation action norm definition digitized processing, the constraint that generates new cartoon role skeleton generates based on the record in the database automatically.
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| CN106201559A (en) * | 2016-08-24 | 2016-12-07 | 合肥凌翔信息科技有限公司 | A kind of graphical programming software |
| CN112132932A (en) * | 2020-09-02 | 2020-12-25 | 苏州好玩友网络科技有限公司 | Automatic sequence diagram generation method and device |
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