156 lines
4.0 KiB
V
156 lines
4.0 KiB
V
// Copyright (c) 2019-2021 Alexander Medvednikov. All rights reserved.
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// Use of this source code is governed by an MIT license
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// that can be found in the LICENSE file.
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// might need special case for this
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// import gl
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import glm
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fn cmp(a f32, b f32) bool {
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return int(a * 1000) == int(b * 1000)
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}
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fn test_ortho() {
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projection := glm.ortho(0, 200, 400, 0)
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$if debug {
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println(unsafe {projection.data[0]})
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}
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unsafe {
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assert cmp(projection.data[0], 0.01)
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assert cmp(projection.data[1], 0.000000)
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assert cmp(projection.data[2], 0.000000)
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assert cmp(projection.data[3], 0.000000)
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assert cmp(projection.data[4], 0.000000)
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assert cmp(projection.data[5], -0.005000)
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assert cmp(projection.data[6], 0.000000)
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assert cmp(projection.data[7], 0.000000)
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assert cmp(projection.data[8], 0.000000)
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assert cmp(projection.data[9], 0.000000)
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assert cmp(projection.data[10], 1.000000)
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assert cmp(projection.data[11], 0.000000)
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assert cmp(projection.data[12], -1.000000)
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assert cmp(projection.data[13], 1.000000)
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assert cmp(projection.data[14], 0.000000)
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assert cmp(projection.data[15], 1.000000)
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}
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// f := gg.ortho(1,2,3,4)
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/*
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// for debugging broken tetris in gg.o
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# projection.data[0]=0.010000;
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# projection.data[1]=0.000000;
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# projection.data[2]=0.000000;
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# projection.data[3]=0.000000;
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# projection.data[4]=0.000000;
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# projection.data[5]=-0.005000;
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# projection.data[6]=0.000000;
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# projection.data[7]=0.000000;
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# projection.data[8]=0.000000;
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# projection.data[9]=0.000000;
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# projection.data[10]=1.000000;
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# projection.data[11]=0.000000;
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# projection.data[12]=-1.000000;
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# projection.data[13]=1.000000;
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# projection.data[14]=0.000000;
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# projection.data[15]=1.000000;
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*/
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}
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fn test_rotate() {
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$if debug {
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println('rotate')
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}
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mut m := glm.identity()
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m = glm.scale(m, glm.vec3(2, 2, 2))
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$if debug {
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println(m)
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}
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m = glm.rotate_z(m, 1)
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$if debug {
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println(m)
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}
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mut m1 := glm.identity()
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mut m2 := glm.identity()
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m1 = glm.rotate(1, glm.vec3(1, 0, 0), m1)
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m2 = glm.rotate(1, glm.vec3(0, 1, 0), m2)
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mut same := true
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for i in 0 .. 15 {
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if unsafe {m1.data[i]} != unsafe {m2.data[i]} {
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same = false
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}
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}
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assert !same
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}
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fn test_translate() {
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mut m := glm.identity()
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m = glm.translate(m, glm.vec3(0, 0, -0.5))
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$if debug {
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println(m)
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}
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unsafe {
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assert m.data[0] == 1.0
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assert m.data[1] == 0.0
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assert m.data[2] == 0.0
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assert m.data[3] == 0.0
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//
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assert m.data[4] == 0.0
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assert m.data[5] == 1.0
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assert m.data[6] == 0.0
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assert m.data[7] == 0.0
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assert m.data[8] == 0.0
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assert m.data[9] == 0.0
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assert m.data[10] == 1.0
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assert m.data[11] == 0.0
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//
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assert m.data[12] == 0.0
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assert m.data[13] == 0.0
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assert m.data[14] == -0.5
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assert m.data[15] == 1.0
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}
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}
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fn f32_calloc(n int) &f32 {
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return voidptr(vcalloc(n * int(sizeof(f32))))
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}
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fn test_mult1() {
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mut adata := f32_calloc(16)
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unsafe {
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adata[1 * 4 + 1] = 6
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adata[2 * 4 + 3] = 2
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adata[0 * 4 + 2] = 3
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adata[2 * 4 + 1] = 1
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}
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mut bdata := f32_calloc(16)
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unsafe {
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bdata[1 * 4 + 1] = -2
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bdata[2 * 4 + 3] = 1
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bdata[0 * 4 + 2] = 6
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bdata[2 * 4 + 1] = -3
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}
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mut expected := f32_calloc(16)
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unsafe {
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expected[0 * 4 + 0] = 0 // 0*0+0*0+0*6+0*0
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expected[0 * 4 + 1] = 6 // 0*0+0*6+1*6+0*0
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expected[0 * 4 + 2] = 0 // 3*0+0*0+0*6+0*0
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expected[0 * 4 + 3] = 12 // 0*0+0*0+2*6+0*0
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expected[1 * 4 + 0] = 0 // 0*0+0*-2+0*0+0*0
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expected[1 * 4 + 1] = -12 // 0*0+6*-2+1*0+0*0
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expected[1 * 4 + 2] = 0 // 3*0+0*-2+0*0+0*0
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expected[1 * 4 + 3] = 0 // 0*0+0*-2+2*0+0*0
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expected[2 * 4 + 0] = 0 // 0*0+0*-3+0*0+0*1
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expected[2 * 4 + 1] = -18 // 0*0+6*-3+1*0+0*1
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expected[2 * 4 + 2] = 0 // 3*0+0*-3+0*0+0*1
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expected[2 * 4 + 3] = 0 // 0*0+0*-3+2*0+0*1
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expected[3 * 4 + 0] = 0 // 0*0+0*0+0*0+0*0
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expected[3 * 4 + 1] = 0 // 0*0+6*0+1*0+0*0
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expected[3 * 4 + 2] = 0 // 3*0+0*0+0*0+0*0
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expected[3 * 4 + 3] = 0 // 0*0+0*0+2*0+0*0
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}
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mut a := glm.Mat4{adata}
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b := glm.Mat4{bdata}
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a = glm.mult(a, b)
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for i in 0 .. 15 {
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assert unsafe {a.data[i]} == unsafe {expected[i]}
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}
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}
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