Mercurial > games > semicongine
annotate examples/alotof_triangles.nim @ 41:cc8724250d65
fix: organize notes a bit
| author | Sam <sam@basx.dev> |
|---|---|
| date | Wed, 18 Jan 2023 14:15:08 +0700 |
| parents | 2771db8d4276 |
| children | 94d7eed3f118 |
| rev | line source |
|---|---|
| 28 | 1 import std/times |
| 32 | 2 import std/strutils |
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b45a5d338cd0
did: improve alotof_triangles example, remove glslang lib, use only binary, easier cross-compilation
Sam <sam@basx.dev>
parents:
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changeset
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3 import std/math |
| 21 | 4 import std/random |
| 32 | 5 import std/enumerate |
| 21 | 6 |
| 40 | 7 import semicongine/engine |
| 8 import semicongine/math/vector | |
| 9 import semicongine/math/matrix | |
| 10 import semicongine/vertex | |
| 11 import semicongine/descriptor | |
| 12 import semicongine/mesh | |
| 13 import semicongine/thing | |
| 14 import semicongine/shader | |
| 21 | 15 |
| 16 type | |
| 17 VertexDataA = object | |
| 32 | 18 position11: PositionAttribute[Vec2[float32]] |
| 19 color22: ColorAttribute[Vec3[float32]] | |
| 20 Uniforms = object | |
| 21 dt: Descriptor[float32] | |
| 21 | 22 |
| 32 | 23 proc globalUpdate(engine: var Engine, dt: float32) = |
| 28 | 24 discard |
| 25 | |
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b45a5d338cd0
did: improve alotof_triangles example, remove glslang lib, use only binary, easier cross-compilation
Sam <sam@basx.dev>
parents:
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26 proc randomtransform(): Mat33[float32] = |
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b45a5d338cd0
did: improve alotof_triangles example, remove glslang lib, use only binary, easier cross-compilation
Sam <sam@basx.dev>
parents:
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27 let randomscale = scale2d(float32(rand(1.0) + 0.5), float32(rand(1.0) + 0.5)) |
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b45a5d338cd0
did: improve alotof_triangles example, remove glslang lib, use only binary, easier cross-compilation
Sam <sam@basx.dev>
parents:
21
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changeset
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28 let randomrotate = rotate2d(float32(rand(2 * PI))) |
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b45a5d338cd0
did: improve alotof_triangles example, remove glslang lib, use only binary, easier cross-compilation
Sam <sam@basx.dev>
parents:
21
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changeset
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29 let randomtranslate = translate2d(float32(rand(1.6) - 0.8), float32(rand(1.6) - 0.8)) |
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b45a5d338cd0
did: improve alotof_triangles example, remove glslang lib, use only binary, easier cross-compilation
Sam <sam@basx.dev>
parents:
21
diff
changeset
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30 result = randomtranslate * randomrotate * randomscale |
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b45a5d338cd0
did: improve alotof_triangles example, remove glslang lib, use only binary, easier cross-compilation
Sam <sam@basx.dev>
parents:
21
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changeset
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31 |
| 21 | 32 when isMainModule: |
| 33 randomize() | |
| 28 | 34 var myengine = igniteEngine("A lot of triangles") |
| 21 | 35 const baseTriangle = [ |
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b45a5d338cd0
did: improve alotof_triangles example, remove glslang lib, use only binary, easier cross-compilation
Sam <sam@basx.dev>
parents:
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changeset
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36 Vec3([-0.1'f32, -0.1'f32, 1'f32]), |
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b45a5d338cd0
did: improve alotof_triangles example, remove glslang lib, use only binary, easier cross-compilation
Sam <sam@basx.dev>
parents:
21
diff
changeset
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37 Vec3([ 0.1'f32, 0.1'f32, 1'f32]), |
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b45a5d338cd0
did: improve alotof_triangles example, remove glslang lib, use only binary, easier cross-compilation
Sam <sam@basx.dev>
parents:
21
diff
changeset
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38 Vec3([-0.1'f32, 0.1'f32, 1'f32]), |
| 21 | 39 ] |
| 40 | |
| 41 var scene = new Thing | |
| 42 | |
| 43 for i in 1 .. 300: | |
| 44 var randommesh = new Mesh[VertexDataA] | |
| 28 | 45 let randomcolor1 = Vec3([float32(rand(1)), float32(rand(1)), float32(rand(1))]) |
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b45a5d338cd0
did: improve alotof_triangles example, remove glslang lib, use only binary, easier cross-compilation
Sam <sam@basx.dev>
parents:
21
diff
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46 let transform1 = randomtransform() |
| 21 | 47 randommesh.vertexData = VertexDataA( |
| 32 | 48 position11: PositionAttribute[Vec2[float32]]( |
| 21 | 49 data: @[ |
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b45a5d338cd0
did: improve alotof_triangles example, remove glslang lib, use only binary, easier cross-compilation
Sam <sam@basx.dev>
parents:
21
diff
changeset
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50 Vec2[float32](transform1 * baseTriangle[0]), |
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b45a5d338cd0
did: improve alotof_triangles example, remove glslang lib, use only binary, easier cross-compilation
Sam <sam@basx.dev>
parents:
21
diff
changeset
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51 Vec2[float32](transform1 * baseTriangle[1]), |
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b45a5d338cd0
did: improve alotof_triangles example, remove glslang lib, use only binary, easier cross-compilation
Sam <sam@basx.dev>
parents:
21
diff
changeset
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52 Vec2[float32](transform1 * baseTriangle[2]), |
| 21 | 53 ] |
| 54 ), | |
| 32 | 55 color22: ColorAttribute[Vec3[float32]]( |
| 28 | 56 data: @[randomcolor1, randomcolor1, randomcolor1] |
| 21 | 57 ) |
| 58 ) | |
| 59 | |
| 28 | 60 let randomcolor2 = Vec3([float32(rand(1)), float32(rand(1)), float32(rand(1))]) |
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b45a5d338cd0
did: improve alotof_triangles example, remove glslang lib, use only binary, easier cross-compilation
Sam <sam@basx.dev>
parents:
21
diff
changeset
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61 let transform2 = randomtransform() |
| 21 | 62 var randomindexedmesh = new IndexedMesh[VertexDataA, uint16] |
| 63 randomindexedmesh.vertexData = VertexDataA( | |
| 32 | 64 position11: PositionAttribute[Vec2[float32]]( |
| 21 | 65 data: @[ |
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22
b45a5d338cd0
did: improve alotof_triangles example, remove glslang lib, use only binary, easier cross-compilation
Sam <sam@basx.dev>
parents:
21
diff
changeset
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66 Vec2[float32](transform2 * baseTriangle[0]), |
|
b45a5d338cd0
did: improve alotof_triangles example, remove glslang lib, use only binary, easier cross-compilation
Sam <sam@basx.dev>
parents:
21
diff
changeset
|
67 Vec2[float32](transform2 * baseTriangle[1]), |
|
b45a5d338cd0
did: improve alotof_triangles example, remove glslang lib, use only binary, easier cross-compilation
Sam <sam@basx.dev>
parents:
21
diff
changeset
|
68 Vec2[float32](transform2 * baseTriangle[2]), |
| 21 | 69 ] |
| 70 ), | |
| 32 | 71 color22: ColorAttribute[Vec3[float32]]( |
| 28 | 72 data: @[randomcolor2, randomcolor2, randomcolor2] |
| 21 | 73 ) |
| 74 ) | |
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22
b45a5d338cd0
did: improve alotof_triangles example, remove glslang lib, use only binary, easier cross-compilation
Sam <sam@basx.dev>
parents:
21
diff
changeset
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75 randomindexedmesh.indices = @[[0'u16, 1'u16, 2'u16]] |
| 21 | 76 var childthing = new Thing |
| 77 childthing.parts.add randommesh | |
| 78 childthing.parts.add randomindexedmesh | |
| 79 scene.children.add childthing | |
| 80 | |
| 32 | 81 const vertexShader = generateVertexShaderCode[VertexDataA, Uniforms]() |
| 82 const fragmentShader = generateFragmentShaderCode[VertexDataA]() | |
| 83 var pipeline = setupPipeline[VertexDataA, float32, uint16]( | |
| 21 | 84 myengine, |
| 85 scene, | |
| 32 | 86 vertexShader, |
| 87 fragmentShader | |
| 21 | 88 ) |
| 28 | 89 myengine.run(pipeline, globalUpdate) |
| 90 pipeline.trash() | |
| 21 | 91 myengine.trash() |