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1 import std/random
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2
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3 import zamikongine/engine
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4 import zamikongine/math/vector
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5 import zamikongine/math/matrix
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6 import zamikongine/vertex
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7 import zamikongine/mesh
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8 import zamikongine/thing
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9 import zamikongine/shader
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10
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11 type
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12 VertexDataA = object
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13 position11: VertexAttribute[Vec2[float32]]
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14 color22: VertexAttribute[Vec3[float32]]
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15
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16 when isMainModule:
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17 randomize()
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18 var myengine = igniteEngine()
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19 const baseTriangle = [
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20 Vec3([-0.3'f32, -0.3'f32, 1'f32]),
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21 Vec3([ 0.3'f32, 0.3'f32, 1'f32]),
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22 Vec3([-0.3'f32, 0.3'f32, 1'f32]),
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23 ]
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24
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25 var scene = new Thing
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26
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27 for i in 1 .. 300:
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28 var randommesh = new Mesh[VertexDataA]
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29 # TODO: create randomized position11 from baseTriangle with random transformation matrix
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30 var transform = (Mat33[float32]().randomized() * 2'f32) - 1'f32
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31 randommesh.vertexData = VertexDataA(
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32 position11: VertexAttribute[Vec2[float32]](
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33 data: @[
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34 Vec2[float32](transform * baseTriangle[0]),
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35 Vec2[float32](transform * baseTriangle[1]),
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36 Vec2[float32](transform * baseTriangle[2]),
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37 ]
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38 ),
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39 color22: VertexAttribute[Vec3[float32]](
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40 data: @[
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41 Vec3([float32(rand(1)), float32(rand(1)), float32(rand(1))]),
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42 Vec3([float32(rand(1)), float32(rand(1)), float32(rand(1))]),
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43 Vec3([float32(rand(1)), float32(rand(1)), float32(rand(1))]),
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44 ]
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45 )
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46 )
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47
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48 var randomindexedmesh = new IndexedMesh[VertexDataA, uint16]
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49 randomindexedmesh.vertexData = VertexDataA(
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50 position11: VertexAttribute[Vec2[float32]](
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51 data: @[
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52 Vec2[float32](transform * baseTriangle[0]),
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53 Vec2[float32](transform * baseTriangle[1]),
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54 Vec2[float32](transform * baseTriangle[2]),
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55 ]
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56 ),
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57 color22: VertexAttribute[Vec3[float32]](
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58 data: @[
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59 Vec3([float32(rand(1)), float32(rand(1)), float32(rand(1))]),
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60 Vec3([float32(rand(1)), float32(rand(1)), float32(rand(1))]),
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61 Vec3([float32(rand(1)), float32(rand(1)), float32(rand(1))]),
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62 ]
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63 )
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64 )
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65 randomindexedmesh.indices = @[[0'u16, 1'u16, 2'u16], [0'u16, 2'u16, 1'u16]]
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66 var childthing = new Thing
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67 childthing.parts.add randommesh
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68 childthing.parts.add randomindexedmesh
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69 scene.children.add childthing
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70
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71 setupPipeline[VertexDataA, uint16](
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72 myengine,
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73 scene,
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74 generateVertexShaderCode[VertexDataA]("main", "position11", "color22"),
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75 generateFragmentShaderCode[VertexDataA]("main"),
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76 )
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77 myengine.fullThrottle()
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78 myengine.trash()
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