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Add custom transorm matrix

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This commit is contained in:
Miloslav Číž 2019-06-16 19:36:48 +02:00
parent df54b24f78
commit 5677939c68
5 changed files with 4533 additions and 5 deletions
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2468
programs/grassNormalTexture.h Normal file
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2015
programs/grassTexture.h Normal file
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30
programs/hqOffline.c
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@ -14,6 +14,8 @@
#include <stdio.h>
#include <math.h>
#include "grassTexture.h"
uint8_t frameBuffer[S3L_RESOLUTION_X * S3L_RESOLUTION_Y * 3];
int frame = 0;
@ -64,6 +66,21 @@ S3L_Vec4 toLightDirection;
S3L_Vec4 n0, n1, n2, v0, v1, v2;
void sampleTexture(uint8_t *texture, int w, int h, float x, float y, char color[3])
{
x = fmod(x,1.0);
y = fmod(y,1.0);
int intX = x * w;
int intY = y * h;
int index = S3L_clamp((intY * w + intX) * 3,0,w * h - 1);
color[0] = texture[index];
color[1] = texture[index + 1];
color[2] = texture[index + 2];
}
void drawPixel(S3L_PixelInfo *p)
{
S3L_Unit *normals = p->modelIndex == 0 ? terrainNormals : waterNormals;
@ -199,9 +216,16 @@ color[2] = fresnel2 * 255 + fresnel * 100;
}
else
{
color[0] = S3L_clamp(255 * light,0,255);
color[1] = S3L_clamp(100 * light,0,255);
color[2] = S3L_clamp(50 * light,0,255);
char textureColor[3];
sampleTexture(grassTexture,GRASS_TEXTURE_WIDTH,GRASS_TEXTURE_HEIGHT,
position.x / ((float) S3L_FRACTIONS_PER_UNIT),
position.z / ((float) S3L_FRACTIONS_PER_UNIT),textureColor);
color[0] = S3L_clamp(textureColor[0] * light,0,255);
color[1] = S3L_clamp(textureColor[1] * light,0,255);
color[2] = S3L_clamp(textureColor[2] * light,0,255);
}
/*

6
programs/modelViewer.c
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@ -432,6 +432,12 @@ int main()
S3L_initScene(&model,1,&scene);
S3L_initModel3D(houseVertices,HOUSE_VERTEX_COUNT,houseTriangleIndices,HOUSE_TRIANGLE_COUNT,&houseModel);
S3L_initModel3D(chestVertices,CHEST_VERTEX_COUNT,chestTriangleIndices,CHEST_TRIANGLE_COUNT,&chestModel);
S3L_initModel3D(plantVertices,PLANT_VERTEX_COUNT,plantTriangleIndices,PLANT_TRIANGLE_COUNT,&plantModel);
S3L_initModel3D(cat1Vertices,CAT1_VERTEX_COUNT,cat1TriangleIndices,CAT1_TRIANGLE_COUNT,&cat1Model);
S3L_initModel3D(cat2Vertices,CAT2_VERTEX_COUNT,cat1TriangleIndices,CAT1_TRIANGLE_COUNT,&cat2Model);
scene.camera.transform.translation.z = -S3L_FRACTIONS_PER_UNIT * 8;
catModel = cat1Model;

17
small3dlib.h
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@ -431,6 +431,10 @@ typedef struct
const S3L_Index *triangles;
S3L_Index triangleCount;
S3L_Transform3D transform;
S3L_Mat4 *customTransformMatrix; /**< This can be used to override the
transform (if != 0) with a custom
transform matrix, which is more
general. */
S3L_DrawConfig config;
} S3L_Model3D; ///< Represents a 3D model.
@ -1458,6 +1462,7 @@ void S3L_initModel3D(
model->vertexCount = vertexCount;
model->triangles = triangles;
model->triangleCount = triangleCount;
model->customTransformMatrix = 0;
S3L_initTransoform3D(&(model->transform));
S3L_initDrawConfig(&(model->config));
@ -2355,7 +2360,17 @@ void S3L_drawScene(S3L_Scene scene)
previousModel = modelIndex;
#endif
S3L_makeWorldMatrix(scene.models[modelIndex].transform,&matFinal);
if (scene.models[modelIndex].customTransformMatrix == 0)
S3L_makeWorldMatrix(scene.models[modelIndex].transform,&matFinal);
else
{
S3L_Mat4 *m = scene.models[modelIndex].customTransformMatrix;
for (int8_t j = 0; j < 4; ++j)
for (int8_t i = 0; i < 4; ++i)
matFinal[i][j] = (*m)[i][j];
}
S3L_mat4Xmat4(&matFinal,&matCamera);
S3L_Index triangleCount = scene.models[modelIndex].triangleCount;