CN109325317B - Parameterized modeling method for ancient building cornice - Google Patents
Parameterized modeling method for ancient building cornice Download PDFInfo
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Abstract
The invention relates to a parameterized modeling method of an ancient building cornice, which sequentially comprises the following technical steps: the first step: inputting general parameters including eave ratio A3, rafter flight ratio A4, roof boarding thickness A6, eave rafter radius A7, fly height A8 and fly width A9; and a second step of: drawing a cornice rafter; and a third step of: and drawing the flyer. The invention is convenient to operate by setting a plurality of control parameters, and is convenient for modifying the cornice model; each cornice rafter and each flyer are prevented from being modeled manually through points, lines, planes and bodies on a computer, so that the computer modeling time of the ancient architecture is saved, and the efficiency is improved; meanwhile, manual calculation of the appearance of each cornice and each flyer is avoided, assembly errors of the model caused by the manual calculation are reduced, and modeling accuracy is improved.
Description
Technical Field
The invention relates to the technical field of ancient building cornice modeling, in particular to a parameterized modeling method of ancient building cornices.
Background
The cornice is one of important manifestations of national style of Chinese ancient architecture, and can be almost seen in palace, temple, urban que, memorial archway, playing building, house and other places. The cornice mainly comprises cornice rafters and flyers, and through the combination of the cornice rafters and the flyers and the lifting and folding of the roof, the lighting space of the ancient building is enlarged, the drainage of the roof is facilitated, the visual effect of the bending and light cornice of the roof is formed, and the cornice is one of the wonderful designs in the traditional building of China.
With the development of the age, the application of computer technology in the field of ancient building modeling is more and more widespread. By utilizing a computer, people can construct a virtual model for guiding the repair and restoration research of the ancient architecture and the design of the modern archaized architecture. Meanwhile, people can also apply the virtual model of the ancient architecture constructed on the computer as the background of the ancient movie and television works and the scenes of certain game animations. Compared with the traditional hand drawing paper and the traditional technology for building the miniature model, the method for modeling the ancient architecture by using the computer has the advantages that the cost is saved, the modification is convenient, the modeling efficiency is greatly improved, and the time is saved.
When the computer modeling is carried out on the ancient architecture, the traditional building method in China has fixed construction modulus for other ancient architecture components such as an arch, a beam, a purlin and the like, the basic modulus of the components of the ancient architecture of different types is approximately the same, and the construction can be relatively easy through a prefabricated computer model sample library. However, for cornices, especially cornices at corners of ancient buildings, the cornice is modified for many times due to the difference of raising height and raising length of the cornice, the cornice and the flyer in the same ancient building, and sometimes in order to achieve different artistic effects, the cornice and the flyer in the same ancient building are raised and raised; meanwhile, different ancient architectures have different head wood forms, raising heights and length, people need to manually calculate the appearance of the cornice rafters and the appearance of the flyers of each ancient architecture and then model the cornice rafters and the appearance of the flyers successively from the angles of points, lines, planes and bodies on a computer, and if errors occur in calculation, the model assembly on the computer is inconsistent. Thus, computer modeling of historic building cornices is a cumbersome and time-consuming part of historic building modeling.
Disclosure of Invention
The invention aims to solve the technical problem of providing a parameterized modeling method for the cornice of the ancient architecture, which is convenient to operate and modify a cornice model by setting a plurality of control parameters; each cornice rafter and each flyer are prevented from being modeled manually through points, lines, planes and bodies on a computer, so that the computer modeling time of the ancient architecture is saved, and the efficiency is improved; meanwhile, manual calculation of the appearance of each cornice and each flyer is avoided, assembly errors of the model caused by the manual calculation are reduced, and modeling accuracy is improved.
In order to solve the technical problems, the invention provides the following technical scheme: the parameterized modeling method of the ancient building cornice sequentially comprises the following technical steps:
the first step: inputting general parameters including eave ratio A3, rafter flight ratio A4, roof boarding thickness A6, eave rafter radius A7, fly height A8 and fly width A9;
and a second step of: drawing a cornice rafter;
step (1): inputting a yield ratio A5 of the cornice rafters, the spatial coordinates of a first control point A1 of the cornice rafters on a lower plane and the spatial coordinates of a second control point A2 of the cornice rafters on cornice rafters;
step (2): calculating the distance L1 from the first control point A1 to the second control point A2, and listing a space linear equation passing through the first control point A1 and the second control point A2;
step (3): according to the L1, the eave ratio A3, the rafter flying ratio A4 and the yield ratio A5, the distance L2 from the PX point to the second control point A2 and the distance L3 from the P1 point to the second control point A2 are calculated by using the following corresponding equations:
L2＝L1×[A3+A5×(1+A4)]；
L3＝L2/(1+A4)；
step (4): according to a space linear equation passing through the first control point A1 and the second control point A2 and L3, calculating the space coordinates of a PX point and a P1 point on the space linear equation;
step (5): calculating an included angle a between a space straight line passing through the first control point A1 and the second control point A2 and the vertical direction, and calculating a distance L4 from the point P3 to the point P1 according to the included angle a and the radius A7 of the cornice by using the following equation:
L4＝A7/sin∠a；
the P3 point is vertically above the P1 point, and the spatial coordinates of the P3 point are obtained according to the spatial coordinates of the L4 point and the P1 point;
step (6): calculating the projection of the P3 point on a spatial straight line passing through the first control point A1 and the second control point A2 to obtain the spatial coordinate of the P2 point;
step (7): drawing a cornice rafter according to the space coordinates of the P2 point, the space coordinates of the first control point A1 and the radius A7 of the cornice rafter;
and a third step of: drawing a fly;
step (8): according to the included angle a, the radius A7 of the cornice and the thickness A6 of the roof boarding, the distance L5 from the point P4 to the second control point A2 is calculated by using the following equation:
L5＝(A7+A6)/sin∠a；
the P4 point is vertically above the second control point A2, and the space coordinate of the P4 point is obtained according to the L5 and the space coordinate of the second control point A2;
step (9): according to the space coordinates of the P2 point and the space coordinates of the P3 point, calculating a space linear equation passing through the P2 point and the P3 point, wherein the distance from the P7 point to the P2 point on the space linear is equal to the sum of the radius A7 of the rafter and the thickness A6 of the roof boarding, and according to the space linear equation and the distance from the P7 point to the P2 point, calculating the space coordinates of the P7 point;
step (10): the tail included angle of the fly is +.b, the space distance L6 from the P7 point to the P4 point is calculated according to the space coordinates of the P7 point and the P4 point, and the sine value, the cosine value and the tangent value of +.b are calculated according to the height A8 of the fly:
sin∠b＝A8/L6；
tan∠b＝sin∠b/cos∠b；
according to L6 and tan < b >, calculating the distance L7 from the auxiliary point PY to P7 and the distance L8 from the auxiliary point PY to P2:
L7＝L6×tan∠b；
L8＝L7+A6+A7；
step (11): the PY point is on a spatial straight line passing through the P2 point and the P3 point, and the spatial coordinate of the PY point is obtained through calculation according to a spatial straight line equation passing through the P2 point and the P3 point and the distance L8 from the PY point to the P2 point;
step (12): listing a space linear equation passing through the PY point and the P4 point by the space coordinates of the PY point and the space coordinates of the P4 point, listing a space linear equation passing through the PX point and vertically upwards by the space coordinates of the PX point, and calculating the intersection point of the two space linear equations to obtain the space coordinates of the P5 point;
step (13): the space straight line passing through the P7 point and the P6 point is parallel to the space straight line passing through the PY point and the P4 point, the space straight line passing through the P7 point and the P6 point is obtained according to the space coordinates of the P7 point and the direction vector, and the projection of the P5 point on the space straight line passing through the P7 point and the P6 point is calculated to obtain the space coordinates of the P6 point;
step (14): drawing a fly according to the space coordinates of the P4 point, the P5 point, the P6 point and the P7 point on the fly section and the width A9 of the fly;
wherein, the eave ratio A3 refers to the horizontal projection length of the eave rafters and the flyers except for the eave purlin divided by the horizontal projection length of the eave rafters between the eave purlin and the lower plane , and is used for controlling the eave length except for the eave purlin;
the rafter flying ratio A4 is the horizontal projection length of the eave of the outer purlin of divided by the horizontal projection length of the eave of the outer eave rafter of , and is used for controlling the ratio of the eave of each of the eave rafter and the outer eave of the outer purlin of ;
the emergence ratio A5 refers to the ratio of the horizontal projection of the emergence length of the cornice at the corner to the horizontal projection of the distance from the first control point A1 to the second control point A2 of the cornice at the corner after the cornice at the corner is generated, and is used for controlling the emergence length of the cornice at the corner, and the value of the ratio is 0 for the cornice at the non-corner;
the thickness A6 of the roof board refers to the thickness of the roof board paved on the cornice rafters;
the eave beam radius A7 refers to the section radius of the eave beam;
the aircraft height A8 refers to the cross-sectional height of the aircraft;
the flight width A9 refers to the cross-sectional width of the flight.
On the basis of the technical scheme, when modeling operation is carried out on the cornice of the ancient building, if the cornice at the non-corner is to be drawn, after the first step is finished, the generation ratio A5 is made to be zero, and then the steps (1) to (14) are repeated until all the cornice rafters and the flyers which are not in the non-corner of the ancient building and are in the generated groups are drawn; if the cornice at the corner is to be drawn, after the first step is completed, repeating the steps (1) to (14) according to the generation ratio A5 of each cornice rafter at the corner and the space coordinates of the corresponding first control point A1 and second control point A2 until all groups of cornice rafters and flyers with the generated cornice at the corner are drawn.
Compared with the prior art, the invention has the following beneficial effects: the invention provides a parameterized modeling method of an ancient building cornice, wherein the algorithm flow is used for calculating and drawing other parameters for determining the appearance of a cornice and a fly step by setting overall control parameters and independent control parameters, so that the drawing of the cornice and the fly which do not occur at a non-corner in the ancient building cornice and the drawing of the cornice and the fly which occur at the corner can be conveniently completed. The invention has the advantages that: the constructed ancient architecture cornice model can be modified conveniently through overall control parameters and independent control parameters, so that cornices with different artistic shapes can be constructed conveniently; the modeling of each cornice and each fly is avoided by manually carrying out the modeling of points, lines, planes and bodies on a computer, the modeling time of the computer cornice is greatly saved, and the efficiency is improved; the method avoids the experience and manual calculation of the appearance of each cornice and each flyer, avoids the assembly error of the model caused by the calculation, and improves the modeling assembly precision.
Drawings
FIG. 1 is a schematic illustration of the layout of the rafters, roof and flyer of the present invention;
FIG. 2 is an enlarged view of the invention at A in FIG. 1;
FIG. 3 is an enlarged view of the invention at B in FIG. 1;
FIG. 4 is a schematic view of the structure of the present invention;
FIG. 5 is a schematic view in the direction C-C of FIG. 4 in accordance with the present invention;
FIG. 6 is a schematic top view of a rafter of the invention depicting a non-corner of the cornice without consideration;
FIG. 7 is a schematic top view of a rafter of the invention in view of a cornice at a raised corner;
the reference numerals in the figures are: 1-cornice, 2-roof boarding and 3-flyer.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Referring to fig. 1 to 7, a parameterized modeling method of a ancient architecture cornice is known, in which a plurality of parameters and a plurality of location points are involved, and the method has the following meanings:
the first control point A1 is a central coordinate point of a section of the tail of the cornice rafter and corresponds to the intersection point of the vertical midline of the lower plane and the axis of the cornice rafter;
the second control point A2 is a cross section center coordinate point of the cornice rafter above the cornice rafter and corresponds to an intersection point of a cornice rafter vertical center line and a cornice rafter axis;
the eave ratio A3 refers to the horizontal projection length of the eave rafters and the flyers except for the eave purlin divided by the horizontal projection length of the eave rafters between the eave purlin and the lower plane , and is used for controlling the eave length except for the eave purlin;
the rafter flying ratio A4 is the horizontal projection length of the eave of the outer purlin of divided by the horizontal projection length of the eave of the outer eave rafter of , and is used for controlling the ratio of the eave of each of the eave rafter and the outer eave of the outer purlin of ;
the emergence ratio A5 refers to the ratio of the horizontal projection of the emergence length of the cornice at the corner to the horizontal projection of the distance from the first control point A1 to the second control point A2 of the cornice at the corner after the cornice at the corner is generated, and is used for controlling the emergence length of the cornice at the corner, and the value of the ratio is 0 for the cornice at the non-corner;
the thickness A6 of the roof board refers to the thickness of the roof board paved on the cornice rafters;
the eave beam radius A7 refers to the section radius of the eave beam;
the aircraft height A8 refers to the cross-sectional height of the aircraft;
the flight width A9 refers to the cross-sectional width of the flight;
the point P1 is the intersection point of the vertical downward straight line passing through the point P3 and the cornice axis;
the point P2 is a central coordinate point of the cross section of the head of the cornice;
the point P3 is a coordinate point along the upper edge of the cross section of the head of the cornice;
the point P4 is a center coordinate point of the tail of the fly;
the point P5 is a coordinate point along the upper edge of the cross section of the head of the fly;
the point P6 is a coordinate point of the lower edge of the cross section of the head of the fly;
the point P7 is the intersection point of the straight edge and the bevel edge at the bottom of the fly;
the PX point is an auxiliary point for calculation, representing the intersection point of the straight line passing through the P5 point and vertically downward and the eave rafter axis;
the PY point is an auxiliary point for calculation, and represents an intersection point at which a straight line passing through the P2 point and the P3 point intersects a straight line passing through the P4 point and the P5 point.
Among the above parameters, the eave ratio A3, the rafter flight ratio A4, the roof thickness A6, the eave radius A7, the fly height A8 and the fly width A9 belong to the overall control parameters for setting the eave rafters and the flies of all groups, and the overall control parameters of the eave rafters and the flies of each group are the same in the eave portion of the same ancient building. The ratio of production A5, the spatial coordinates of the first control point A1 and the spatial coordinates of the second control point A2 among the above parameters are different for each set of rafters and flyers, which belong to separate control parameters for each set of rafters and flyers of the cornice.
Referring to fig. 1 to 7, a parameterized modeling method for a cornice of an ancient architecture sequentially comprises the following technical steps:
the first step: inputting general parameters including eave ratio A3, rafter flight ratio A4, roof boarding thickness A6, eave rafter radius A7, fly height A8 and fly width A9;
and a second step of: drawing a cornice rafter;
step (1): inputting a yield ratio A5 of the cornice rafters, the spatial coordinates of a first control point A1 of the cornice rafters on a lower plane and the spatial coordinates of a second control point A2 of the cornice rafters on cornice rafters;
step (2): calculating the distance L1 from the first control point A1 to the second control point A2, and listing a space linear equation passing through the first control point A1 and the second control point A2;
step (3): according to the L1, the eave ratio A3, the rafter flying ratio A4 and the yield ratio A5, the distance L2 from the PX point to the second control point A2 and the distance L3 from the P1 point to the second control point A2 are calculated by using the following corresponding equations:
L2＝L1×[A3+A5×(1+A4)]；
L3＝L2/(1+A4)；
step (4): according to a space linear equation passing through the first control point A1 and the second control point A2 and L3, calculating the space coordinates of a PX point and a P1 point on the space linear equation;
step (5): calculating an included angle a between a space straight line passing through the first control point A1 and the second control point A2 and the vertical direction, and calculating a distance L4 from the point P3 to the point P1 according to the included angle a and the radius A7 of the cornice by using the following equation:
L4＝A7/sin∠a；
the P3 point is vertically above the P1 point, and the spatial coordinates of the P3 point are obtained according to the spatial coordinates of the L4 point and the P1 point;
step (6): calculating the projection of the P3 point on a spatial straight line passing through the first control point A1 and the second control point A2 to obtain the spatial coordinate of the P2 point;
step (7): drawing a cornice rafter according to the space coordinates of the P2 point, the space coordinates of the first control point A1 and the radius A7 of the cornice rafter;
and a third step of: drawing a fly;
step (8): according to the included angle a, the radius A7 of the cornice and the thickness A6 of the roof boarding, the distance L5 from the point P4 to the second control point A2 is calculated by using the following equation:
L5＝(A7+A6)/sin∠a；
the P4 point is vertically above the second control point A2, and the space coordinate of the P4 point is obtained according to the L5 and the space coordinate of the second control point A2;
step (9): according to the space coordinates of the P2 point and the space coordinates of the P3 point, calculating a space linear equation passing through the P2 point and the P3 point, wherein the distance from the P7 point to the P2 point on the space linear is equal to the sum of the radius A7 of the rafter and the thickness A6 of the roof boarding, and according to the space linear equation and the distance from the P7 point to the P2 point, calculating the space coordinates of the P7 point;
step (10): the tail included angle of the fly is +.b, the space distance L6 from the P7 point to the P4 point is calculated according to the space coordinates of the P7 point and the P4 point, and the sine value, the cosine value and the tangent value of +.b are calculated according to the height A8 of the fly:
sin∠b＝A8/L6；
tan∠b＝sin∠b/cos∠b；
according to L6 and tan < b >, calculating the distance L7 from the auxiliary point PY to P7 and the distance L8 from the auxiliary point PY to P2:
L7＝L6×tan∠b；
L8＝L7+A6+A7；
step (11): the PY point is on a spatial straight line passing through the P2 point and the P3 point, and the spatial coordinate of the PY point is obtained through calculation according to a spatial straight line equation passing through the P2 point and the P3 point and the distance L8 from the PY point to the P2 point;
step (12): listing a space linear equation passing through the PY point and the P4 point by the space coordinates of the PY point and the space coordinates of the P4 point, listing a space linear equation passing through the PX point and vertically upwards by the space coordinates of the PX point, and calculating the intersection point of the two space linear equations to obtain the space coordinates of the P5 point;
step (13): the space straight line passing through the P7 point and the P6 point is parallel to the space straight line passing through the PY point and the P4 point, the space straight line passing through the P7 point and the P6 point is obtained according to the space coordinates of the P7 point and the direction vector, and the projection of the P5 point on the space straight line passing through the P7 point and the P6 point is calculated to obtain the space coordinates of the P6 point;
step (14): and drawing the flyer according to the space coordinates of the P4 point, the P5 point, the P6 point and the P7 point on the flyer section and the flyer width A9.
When modeling operation is carried out on the cornice of the ancient building, if the cornice at the non-corner is to be drawn, after the first step is finished, the generation ratio A5 is made to be zero, and then the steps (1) to (14) are repeated until all the cornice rafters and the flyers which are not in the non-corner of the ancient building and are in the generated groups are drawn; if the cornice at the corner is to be drawn, after the first step is completed, repeating the steps (1) to (14) according to the generation ratio A5 of each cornice rafter at the corner and the space coordinates of the corresponding first control point A1 and second control point A2 until all groups of cornice rafters and flyers with the generated cornice at the corner are drawn.
Claims (1)
1. The parameterized modeling method for the ancient building cornice is characterized by sequentially adopting the following technical steps:
the first step: inputting general parameters including eave ratio A3, rafter flight ratio A4, roof boarding thickness A6, eave rafter radius A7, fly height A8 and fly width A9;
and a second step of: drawing a cornice rafter;
step (1): inputting a yield ratio A5 of the cornice rafters, the spatial coordinates of a first control point A1 of the cornice rafters on a lower plane and the spatial coordinates of a second control point A2 of the cornice rafters on cornice rafters;
step (2): calculating the distance L1 from the first control point A1 to the second control point A2, and listing a space linear equation passing through the first control point A1 and the second control point A2;
step (3): according to the L1, the eave ratio A3, the rafter flying ratio A4 and the yield ratio A5, the distance L2 from the PX point to the second control point A2 and the distance L3 from the P1 point to the second control point A2 are calculated by using the following corresponding equations:
L2＝L1×[A3+A5×(1+A4)]；
L3＝L2/(1+A4)；
step (4): according to a space linear equation passing through the first control point A1 and the second control point A2 and L3, calculating space coordinates of a PX point and a P1 point on the space linear;
step (5): calculating an included angle a between a space straight line passing through the first control point A1 and the second control point A2 and the vertical direction, and calculating a distance L4 from the point P3 to the point P1 according to the included angle a and the radius A7 of the cornice by using the following equation:
L4＝A7/sin∠a；
the P3 point is vertically above the P1 point, and the spatial coordinates of the P3 point are obtained according to the spatial coordinates of the L4 point and the P1 point;
step (6): calculating the projection of the P3 point on a spatial straight line passing through the first control point A1 and the second control point A2 to obtain the spatial coordinate of the P2 point;
step (7): drawing a cornice rafter according to the space coordinates of the P2 point, the space coordinates of the first control point A1 and the radius A7 of the cornice rafter;
and a third step of: drawing a fly;
step (8): according to the included angle a, the radius A7 of the cornice and the thickness A6 of the roof boarding, the distance L5 from the point P4 to the second control point A2 is calculated by using the following equation:
L5＝(A7+A6)/sin∠a；
the P4 point is vertically above the second control point A2, and the space coordinate of the P4 point is obtained according to the L5 and the space coordinate of the second control point A2;
step (9): according to the space coordinates of the P2 point and the space coordinates of the P3 point, a space linear equation passing through the P2 point and the P3 point is listed, the distance from the P7 point to the P2 point on the space linear is equal to the sum of the radius A7 of the cornice and the thickness A6 of the roof boarding, and according to the space linear equation and the distance from the P7 point to the P2 point, the space coordinates of the P7 point are calculated;
step (10): the tail included angle of the fly is +.b, the space distance L6 from the P7 point to the P4 point is calculated according to the space coordinates of the P7 point and the P4 point, and the sine value, the cosine value and the tangent value of +.b are calculated according to the height A8 of the fly:
sin∠b＝A8/L6；
tan∠b＝sin∠b/cos∠b；
according to L6 and tan < b >, calculating the distance L7 from the auxiliary point PY to P7 and the distance L8 from the auxiliary point PY to P2:
L7＝L6×tan∠b；
L8＝L7+A6+A7；
step (11): the PY point is on a spatial straight line passing through the P2 point and the P3 point, and the spatial coordinate of the PY point is obtained through calculation according to a spatial straight line equation passing through the P2 point and the P3 point and the distance L8 from the PY point to the P2 point;
step (12): listing a space linear equation passing through the PY point and the P4 point by the space coordinates of the PY point and the space coordinates of the P4 point, listing a space linear equation passing through the PX point and vertically upwards by the space coordinates of the PX point, and calculating the intersection point of the two space linear equations to obtain the space coordinates of the P5 point;
step (13): the space straight line passing through the P7 point and the P6 point is parallel to the space straight line passing through the PY point and the P4 point, the space straight line passing through the P7 point and the P6 point is obtained according to the space coordinates of the P7 point and the direction vector, and the projection of the P5 point on the space straight line passing through the P7 point and the P6 point is calculated to obtain the space coordinates of the P6 point;
step (14): drawing a fly according to the space coordinates of the P4 point, the P5 point, the P6 point and the P7 point on the fly section and the width A9 of the fly;
wherein:
the eave ratio A3 refers to the horizontal projection length of the eave rafters and the flyers except for the eave purlin divided by the horizontal projection length of the eave rafters between the eave purlin and the lower plane , and is used for controlling the eave length except for the eave purlin;
the rafter flying ratio A4 is the horizontal projection length of the eave of the outer purlin of divided by the horizontal projection length of the eave of the outer eave rafter of , and is used for controlling the ratio of the eave of each of the eave rafter and the outer eave of the outer purlin of ;
the emergence ratio A5 refers to the ratio of the horizontal projection of the emergence length of the cornice at the corner to the horizontal projection of the distance from the first control point A1 to the second control point A2 of the cornice at the corner after the cornice at the corner is generated, and is used for controlling the emergence length of the cornice at the corner, and the value of the ratio is 0 for the cornice at the non-corner;
the thickness A6 of the roof board refers to the thickness of the roof board paved on the cornice rafters;
the eave beam radius A7 refers to the section radius of the eave beam;
the aircraft height A8 refers to the cross-sectional height of the aircraft;
the flight width A9 refers to the cross-sectional width of the flight;
when modeling operation is carried out on the cornice of the ancient building, if the cornice at the non-corner is to be drawn, after the first step is finished, the generation ratio A5 is made to be zero, and then the steps (1) to (14) are repeated until all the cornice rafters and the flyers which are not in the non-corner of the ancient building are drawn; if the cornice at the corner is to be drawn, after the first step is completed, repeating the steps (1) to (14) according to the generation ratio A5 of each cornice rafter at the corner and the space coordinates of the corresponding first control point A1 and second control point A2 until all groups of cornice rafters and flyers with the generated cornice at the corner are drawn.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030035382A (en) * | 2001-10-31 | 2003-05-09 | 한재수 | Standardization method of Protruding corners and Curve for the Korean traditional eaves and it's modulization method |
| CN104834797A (en) * | 2015-05-29 | 2015-08-12 | 天津市营宸古建筑工程有限责任公司 | Archaized building concrete upturned roof ridge design and construction method based on computer assistance |
| CN108038287A (en) * | 2017-11-30 | 2018-05-15 | 王曦 | A kind of modeling method and computer equipment of palace type carpentry work roof truss layer |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030035382A (en) * | 2001-10-31 | 2003-05-09 | 한재수 | Standardization method of Protruding corners and Curve for the Korean traditional eaves and it's modulization method |
| CN104834797A (en) * | 2015-05-29 | 2015-08-12 | 天津市营宸古建筑工程有限责任公司 | Archaized building concrete upturned roof ridge design and construction method based on computer assistance |
| CN108038287A (en) * | 2017-11-30 | 2018-05-15 | 王曦 | A kind of modeling method and computer equipment of palace type carpentry work roof truss layer |
Non-Patent Citations (2)
| Title |
|---|
| 仿古建筑翼角椽施工翻样计算;王东海;;施工技术(第S2期);全文 * |
| 古建筑保护中参数化建模及仿真系统的研究;王婉;谢步瀛;;华中科技大学学报(城市科学版)(第03期);全文 * |
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