Mercurial > games > semicongine
changeset 403:6406a5af430d
add: correct grid-mesh indices
| author | Sam <sam@basx.dev> |
|---|---|
| date | Sat, 30 Dec 2023 00:17:04 +0700 |
| parents | 6001079399a6 |
| children | 46c036b795bb |
| files | semicongine/mesh.nim |
| diffstat | 1 files changed, 7 insertions(+), 4 deletions(-) [+] |
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--- a/semicongine/mesh.nim Thu Dec 28 22:33:12 2023 +0700 +++ b/semicongine/mesh.nim Sat Dec 30 00:17:04 2023 +0700 @@ -502,7 +502,7 @@ result[].initVertexAttribute(DEFAULT_POSITION_ATTRIBUTE, pos) result[].initVertexAttribute("color", col) -proc grid*(columns, rows: int, cellSize=1.0'f32, color="ffffffff", material=EMPTY_MATERIAL.initMaterialData()): Mesh = +proc grid*(columns, rows: uint16, cellSize=1.0'f32, color="ffffffff", material=EMPTY_MATERIAL.initMaterialData()): Mesh = result = Mesh( vertexCount: int((rows + 1) * (columns + 1)), @@ -520,12 +520,15 @@ var pos = @[newVec3f(center_offset_x, center_offset_y)] col = @[color, color] - for h in 0 .. rows: - for w in 0 .. columns: + i = 0'u16 + for h in 0'u16 .. rows: + for w in 0'u16 .. columns: pos.add newVec3f(center_offset_x + float32(w) * cellSize, center_offset_y + float32(h) * cellSize) col.add color if w > 0 and h > 0: - result[].smallIndices.add [uint16(0), uint16(1), uint16(2)] + result[].smallIndices.add [i, i - 1, i - w - 1] + result[].smallIndices.add [i, i - w - 1, i - w] + i.inc result[].initVertexAttribute(DEFAULT_POSITION_ATTRIBUTE, pos) result[].initVertexAttribute("color", col)