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comparison examples/input.nim @ 518:5d406c17bbcb

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did: refactor Vector names
author Sam <sam@basx.dev>
date Fri, 20 Jan 2023 16:13:32 +0700
parents 836790efab48
children 8287a91e5d56
comparison
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517:836790efab48 518:5d406c17bbcb
5 import semicongine 5 import semicongine
6 6
7 type 7 type
8 # define type of vertex 8 # define type of vertex
9 VertexDataA = object 9 VertexDataA = object
10 position: PositionAttribute[Vec2[float32]] 10 position: PositionAttribute[TVec2[float32]]
11 color: ColorAttribute[Vec3[float32]] 11 color: ColorAttribute[TVec3[float32]]
12 translate: InstanceAttribute[Vec2[float32]] 12 iscursor: GenericAttribute[int32]
13 Uniforms = object 13 Uniforms = object
14 projection: Descriptor[Mat44[float32]] 14 projection: Descriptor[Mat44[float32]]
15 cursor: Descriptor[Vec2[float32]] 15 cursor: Descriptor[TVec2[float32]]
16 16
17 var 17 var
18 pipeline: RenderPipeline[VertexDataA, Uniforms] 18 pipeline: RenderPipeline[VertexDataA, Uniforms]
19 uniforms: Uniforms 19 uniforms: Uniforms
20 20
33 buffer.updateData(uniforms) 33 buffer.updateData(uniforms)
34 34
35 # vertex data (types must match the above VertexAttributes) 35 # vertex data (types must match the above VertexAttributes)
36 const 36 const
37 shape = @[ 37 shape = @[
38 Vec2([- 1'f32, - 1'f32]), 38 TVec2([- 1'f32, - 1'f32]),
39 Vec2([ 1'f32, - 1'f32]), 39 TVec2([ 1'f32, - 1'f32]),
40 Vec2([-0.3'f32, -0.3'f32]), 40 TVec2([-0.3'f32, -0.3'f32]),
41 Vec2([-0.3'f32, -0.3'f32]), 41 TVec2([-0.3'f32, -0.3'f32]),
42 Vec2([- 1'f32, 1'f32]), 42 TVec2([- 1'f32, 1'f32]),
43 Vec2([- 1'f32, - 1'f32]), 43 TVec2([- 1'f32, - 1'f32]),
44 ] 44 ]
45 colors = @[ 45 colors = @[
46 Vec3([1'f32, 0'f32, 0'f32]), 46 TVec3([1'f32, 0'f32, 0'f32]),
47 Vec3([1'f32, 0'f32, 0'f32]), 47 TVec3([1'f32, 0'f32, 0'f32]),
48 Vec3([1'f32, 0'f32, 0'f32]), 48 TVec3([1'f32, 0'f32, 0'f32]),
49 Vec3([0.8'f32, 0'f32, 0'f32]), 49 TVec3([0.8'f32, 0'f32, 0'f32]),
50 Vec3([0.8'f32, 0'f32, 0'f32]), 50 TVec3([0.8'f32, 0'f32, 0'f32]),
51 Vec3([0.8'f32, 0'f32, 0'f32]), 51 TVec3([0.8'f32, 0'f32, 0'f32]),
52 ] 52 ]
53 53
54 when isMainModule: 54 when isMainModule:
55 var myengine = igniteEngine("Input") 55 var myengine = igniteEngine("Input")
56 56
57 # build a single-object scene graph 57 # build a single-object scene graph
58 var cursor = new Thing 58 var cursor = new Thing
59 var cursorpart = new Mesh[VertexDataA] 59 var cursormesh = new Mesh[VertexDataA]
60 cursorpart.vertexData = VertexDataA( 60 cursormesh.vertexData = VertexDataA(
61 position: PositionAttribute[Vec2[float32]](data: shape), 61 position: PositionAttribute[TVec2[float32]](data: shape),
62 color: ColorAttribute[Vec3[float32]](data: colors), 62 color: ColorAttribute[TVec3[float32]](data: colors),
63 translate: InstanceAttribute[Vec2[float32]](data: @[Vec2[float32]([100'f32, 100'f32])]), 63 iscursor: GenericAttribute[int32](data: @[1'i32, 1'i32, 1'i32, 1'i32, 1'i32, 1'i32]),
64 ) 64 )
65 # transform the cursor a bit to make it look nice 65 # transform the cursor a bit to make it look nice
66 for i in 0 ..< cursorpart.vertexData.position.data.len: 66 for i in 0 ..< cursormesh.vertexData.position.data.len:
67 let cursorscale = ( 67 let cursorscale = (
68 scale2d(20'f32, 20'f32) * 68 scale2d(20'f32, 20'f32) *
69 translate2d(1'f32, 1'f32) * 69 translate2d(1'f32, 1'f32) *
70 rotate2d(-float32(PI) / 4'f32) * 70 rotate2d(-float32(PI) / 4'f32) *
71 scale2d(0.5'f32, 1'f32) * 71 scale2d(0.5'f32, 1'f32) *
72 rotate2d(float32(PI) / 4'f32) 72 rotate2d(float32(PI) / 4'f32)
73 ) 73 )
74 let pos = Vec3[float32]([cursorpart.vertexData.position.data[i][0], cursorpart.vertexData.position.data[i][1], 1'f32]) 74 let pos = TVec3[float32]([cursormesh.vertexData.position.data[i][0], cursormesh.vertexData.position.data[i][1], 1'f32])
75 cursorpart.vertexData.position.data[i] = (cursorscale * pos).xy 75 cursormesh.vertexData.position.data[i] = (cursorscale * pos).xy
76 cursor.parts.add cursorpart 76 cursor.parts.add cursormesh
77
78 var box = new Thing
79 var boxmesh = new Mesh[VertexDataA]
80 boxmesh.vertexData = VertexDataA(
81 position: PositionAttribute[TVec2[float32]](data: shape),
82 color: ColorAttribute[TVec3[float32]](data: colors),
83 iscursor: GenericAttribute[int32](data: @[1'i32, 1'i32, 1'i32, 1'i32, 1'i32, 1'i32]),
84 )
77 85
78 var scene = new Thing 86 var scene = new Thing
79 scene.children.add cursor 87 scene.children.add cursor
80 88
81 # upload data, prepare shaders, etc 89 # upload data, prepare shaders, etc
82 const vertexShader = generateVertexShaderCode[VertexDataA, Uniforms](""" 90 const vertexShader = generateVertexShaderCode[VertexDataA, Uniforms]("""
83 out_position = uniforms.projection * vec4(in_position + uniforms.cursor, 0, 1); 91 out_position = uniforms.projection * vec4(in_position + (uniforms.cursor * iscursor), 0, 1);
84 """) 92 """)
85 const fragmentShader = generateFragmentShaderCode[VertexDataA]() 93 const fragmentShader = generateFragmentShaderCode[VertexDataA]()
86 echo vertexShader 94 echo vertexShader
87 echo fragmentShader 95 echo fragmentShader
88 pipeline = setupPipeline[VertexDataA, Uniforms, uint16]( 96 pipeline = setupPipeline[VertexDataA, Uniforms, uint16](